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Tue, 03/28/2017 - 03:02

Trojan.Injector.CLJ_0bb730f000

Trojan.Win32.Yakes.srbd (Kaspersky), Trojan.Injector.CLJ (B) (Emsisoft), Trojan.Injector.CLJ (AdAware), Backdoor.Win32.Kelihos.FD, mzpefinder_pcap_file.YR, GenericInjector.YR (Lavasoft MAS) Behaviour: Trojan, Backdoor

The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary
Dynamic Analysis
Static Analysis
Network Activity
Map
Strings from Dumps
Removals

Summary

MD5: 0bb730f00001c93fd4a68d7c14f2e44a

SHA1: 0df471d7d0c27713b9829fe6c77d82fc44a5a996

SHA256: 1189bd66d489a7fdb209348ee439bb43a9cdd655b07559e698b121d2ca2ea5e7

SSDeep: 1536:hVcPunCY W8heaQA/Q0ZVoovRoWhvbn7SthT5jsYJjSVxRPXxunYc:hVcPFZRrZVFoybnET5jssc3pO

Size: 119138 bytes

File type: EXE

Platform: WIN32

Entropy: Not Packed

PEID: UPolyXv05_v6, MicrosoftVisualC, MicrosoftVisualCv50v60MFC, MicrosoftVisualC50, Armadillov171

Company: no certificate found

Created at: 2017-03-06 16:39:46

Analyzed on: Windows7 SP1 32-bit

Summary: Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

temp950831582.exe:4080
temp950831582.exe:2964
temp950831582.exe:768
temp950831582.exe:3616
temp950831582.exe:3712
temp950831582.exe:3636
temp950831582.exe:4048
temp950831582.exe:3928
temp950831582.exe:3944
temp950831582.exe:576
temp950831582.exe:3316
temp950831582.exe:3372
temp950831582.exe:3004
temp950831582.exe:3124
temp950831582.exe:1304
temp950831582.exe:632
temp950831582.exe:3764
temp950831582.exe:3296
temp950831582.exe:3160
temp950831582.exe:1832
temp950831582.exe:2784
temp950831582.exe:3476
temp950831582.exe:1776
temp950831582.exe:2204
temp950831582.exe:1812
temp950831582.exe:2036
temp950831582.exe:2224
temp950831582.exe:3024
temp950831582.exe:1072
temp950831582.exe:2528
temp950831582.exe:2220
temp950831582.exe:3388
temp950831582.exe:2740
temp950831582.exe:1056
temp950831582.exe:4028
temp950831582.exe:2152
temp950831582.exe:2432
temp950831582.exe:1464
temp950831582.exe:364
temp950831582.exe:2016
temp950831582.exe:3896
temp950831582.exe:3992
temp950831582.exe:2012
temp950831582.exe:308
temp950831582.exe:892
temp950831582.exe:2460
temp950831582.exe:896
temp950831582.exe:3384
temp950831582.exe:2280
temp950831582.exe:1792
temp950831582.exe:1632
temp950831582.exe:3740
temp950831582.exe:3932
temp950831582.exe:3580
temp950831582.exe:4032
temp950831582.exe:1856
temp950831582.exe:2836
temp950831582.exe:3300
temp950831582.exe:3640
temp950831582.exe:3544
temp950831582.exe:4056
temp950831582.exe:3396
temp950831582.exe:1988
temp950831582.exe:4052
temp950831582.exe:2336
temp950831582.exe:2272
temp950831582.exe:3768
temp950831582.exe:1600
temp950831582.exe:944
temp950831582.exe:4076
temp950831582.exe:1604
temp950831582.exe:1808
temp950831582.exe:928
temp950831582.exe:536
temp950831582.exe:3964
temp950831582.exe:3056
temp950831582.exe:1532
temp950831582.exe:2376
temp950831582.exe:2160
temp950831582.exe:2512
%original file name%.exe:2452

The Trojan injects its code into the following process(es):

temp950831582.exe:776

Mutexes

The following mutexes were created/opened: No objects were found.

File activity

The process temp950831582.exe:776 makes changes in the file system.


The Trojan deletes the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\tmp.exe (0 bytes)

The process %original file name%.exe:2452 makes changes in the file system.


The Trojan creates and/or writes to the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\temp950831582.exe (50 bytes)

Registry activity

The process temp950831582.exe:776 makes changes in the system registry.


The Trojan creates and/or sets the following values in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\ime\IMTC70]
"SizeCompletedValid" = "DC8IYf2zp3qlLSdL uwD05k5D810XvyKVI/O9f7tRgQYOiQ3g8WV/pWMT2mdfiNdjg=="

[HKCU\Software\Microsoft\MediaPlayer\Preferences]
"PersistentLocalizedName" = "CB 80 F9 7F 7A C6 A9 0E DA 61 A4 9B 71 47 0E 41"

[HKCU\Software\Microsoft\IMEJP\10.0\MSIME\AutoCharWidth]
"FlagsModifiedValid" = "00 00 00 00 00 00 00 00"

[HKCU\Software\Microsoft\MediaPlayer\Preferences]
"LineLoadedQuick" = "DC8IYf2zp3qlLSdL uwD05k5D810XvyKVI/O9f7tRgQYOiQ3g8WV/pWMT2mdfiNdjg=="

[HKCU\Software\Microsoft\IMEJP\10.0\MSIME\AutoCharWidth]
"RecordModifiedMax" = "DC8IYf2zp3qlLSdL uwD05k5D810XvyKVI/O9f7tRgQYOiQ3g8WV/pWMT2mdfiNdjg=="

[HKCU\Software\Microsoft\Windows\CurrentVersion\ime\IMTC70]
"ActiveModifiedTheme" = "CB 80 F9 7F 87 25 56 88 4D E6 EF 69 84 88 02 EF"

[HKCU\Software\Microsoft\MediaPlayer\Preferences]
"DBSavedUse" = "A2 49 4D F3 D9 1E 9F 88 01 01 08 6A 00 03 99 01"
"PlatformCompressedValid" = "00 00 00 00 00 00 00 00"

[HKCU\Software\Microsoft\IMEJP\10.0\MSIME\AutoCharWidth]
"DefaultCompressedRecord" = "CB 80 F9 7F 73 48 04 A9 35 D2 CF 43 25 3E 61 A4"

[HKCU\Software\Microsoft\Windows\CurrentVersion\ime\IMTC70]
"InfoPlayedCurrent" = "00 00 00 00 00 00 00 00"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"NetworkNotifyer" = "C:\Users\"%CurrentUserName%"\AppData\Local\Temp\temp950831582.exe"

Dropped PE files

MD5 File path
dbb6df3329bd5a720e68a44ad3be80aac:\Users\"%CurrentUserName%"\AppData\Local\Temp\temp950831582.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

Removals

Remove it with Ad-Aware

  1. Click (here) to download and install Ad-Aware Free Antivirus.
  2. Update the definition files.
  3. Run a full scan of your computer.

Manual removal*

  1. Terminate malicious process(es) (How to End a Process With the Task Manager):

    temp950831582.exe:4080
    temp950831582.exe:2964
    temp950831582.exe:768
    temp950831582.exe:3616
    temp950831582.exe:3712
    temp950831582.exe:3636
    temp950831582.exe:4048
    temp950831582.exe:3928
    temp950831582.exe:3944
    temp950831582.exe:576
    temp950831582.exe:3316
    temp950831582.exe:3372
    temp950831582.exe:3004
    temp950831582.exe:3124
    temp950831582.exe:1304
    temp950831582.exe:632
    temp950831582.exe:3764
    temp950831582.exe:3296
    temp950831582.exe:3160
    temp950831582.exe:1832
    temp950831582.exe:2784
    temp950831582.exe:3476
    temp950831582.exe:1776
    temp950831582.exe:2204
    temp950831582.exe:1812
    temp950831582.exe:2036
    temp950831582.exe:2224
    temp950831582.exe:3024
    temp950831582.exe:1072
    temp950831582.exe:2528
    temp950831582.exe:2220
    temp950831582.exe:3388
    temp950831582.exe:2740
    temp950831582.exe:1056
    temp950831582.exe:4028
    temp950831582.exe:2152
    temp950831582.exe:2432
    temp950831582.exe:1464
    temp950831582.exe:364
    temp950831582.exe:2016
    temp950831582.exe:3896
    temp950831582.exe:3992
    temp950831582.exe:2012
    temp950831582.exe:308
    temp950831582.exe:892
    temp950831582.exe:2460
    temp950831582.exe:896
    temp950831582.exe:3384
    temp950831582.exe:2280
    temp950831582.exe:1792
    temp950831582.exe:1632
    temp950831582.exe:3740
    temp950831582.exe:3932
    temp950831582.exe:3580
    temp950831582.exe:4032
    temp950831582.exe:1856
    temp950831582.exe:2836
    temp950831582.exe:3300
    temp950831582.exe:3640
    temp950831582.exe:3544
    temp950831582.exe:4056
    temp950831582.exe:3396
    temp950831582.exe:1988
    temp950831582.exe:4052
    temp950831582.exe:2336
    temp950831582.exe:2272
    temp950831582.exe:3768
    temp950831582.exe:1600
    temp950831582.exe:944
    temp950831582.exe:4076
    temp950831582.exe:1604
    temp950831582.exe:1808
    temp950831582.exe:928
    temp950831582.exe:536
    temp950831582.exe:3964
    temp950831582.exe:3056
    temp950831582.exe:1532
    temp950831582.exe:2376
    temp950831582.exe:2160
    temp950831582.exe:2512
    %original file name%.exe:2452

  2. Delete the original Trojan file.
  3. Delete or disinfect the following files created/modified by the Trojan:

    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\temp950831582.exe (50 bytes)

  4. Delete the following value(s) in the autorun key (How to Work with System Registry):

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "NetworkNotifyer" = "C:\Users\"%CurrentUserName%"\AppData\Local\Temp\temp950831582.exe"

  5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  6. Reboot the computer.
*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

VersionInfo

Company Name:
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version:
File Description:
Comments:
Language: Chinese (Simplified, PRC)

Company Name: Product Name: Product Version: Legal Copyright: Legal Trademarks: Original Filename: Internal Name: File Version: File Description: Comments: Language: Chinese (Simplified, PRC)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text409633201368643.51787814f1195e618acb198a87f9d4b7dae4a
.rdata40960588481922.7199bdeb3e83153d3c4a2ed66a0e221737ed
.data4915240481920.1753873e8aaa829e9ba7745503771512ff9638
_winc532489432122882.4086749ea5c0ff67b0fbfa84f14f0fad2d200

Dropped from:

11625ed28557169c85cbc7829a0019b3

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL IP
hxxp://211.198.87.141/questio.exe
dns.msftncsi.com131.107.255.255

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

The Trojan connects to the servers at the folowing location(s):

Strings from Dumps