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Sun, 03/26/2017 - 03:02

Gen.Variant.MSILKrypt.11_41a3b21650

HEUR:Trojan.Win32.Generic (Kaspersky), Gen:Variant.MSILKrypt.11 (B) (Emsisoft), Gen:Variant.MSILKrypt.11 (AdAware), Installer.Win32.InnoSetup.FD, Installer.Win32.InnoSetup.2.FD, InstallerInnoSetup.YR (Lavasoft MAS) Behaviour: Trojan, Installer

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: 41a3b216506a5d101d29a315ccaf6583

SHA1: 2224aed3bb6009fe0df3018422cebbc659ca1aa9

SHA256: fff395dcd71403883707e08fd47aadc4479e86005b10da0be6f67ec43eb6fd9f

SSDeep: 196608:Go/norgNjbCuoPsiVDE5Y5Z57a7747WCr/I:Go/dQPsiZZJGy/I

Size: 7720960 bytes

File type: EXE

Platform: WIN32

Entropy: Packed

PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6

Company: no certificate found

Created at: 2017-01-31 11:48:48

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):

1.exe:2944
%original file name%.exe:2956
2.exe:440

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

2.tmp:796
wuapp.exe:2600

Mutexes

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

File activity

The process 1.exe:2944 makes changes in the file system.


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

C:\Users\"%CurrentUserName%"\AppData\Local\aZos091\explorer.exe (742 bytes)

The process %original file name%.exe:2956 makes changes in the file system.


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

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\1.exe (1487 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\2.exe (1024 bytes)

The process 2.exe:440 makes changes in the file system.


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

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\is-8EQLT.tmp\2.tmp (1423 bytes)

Registry activity

The process 1.exe:2944 makes changes in the system registry.


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


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

[HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce]
"2aZos0912" = "C:\Users\"%CurrentUserName%"\AppData\Local\aZos091\explorer.exe"

The process %original file name%.exe:2956 makes changes in the system registry.


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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"
"UNCAsIntranet" = "0"

The Trojan deletes the following value(s) in system registry:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"
"IntranetName"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName"

Dropped PE files

MD5 File path
9c4f9dd9612fa215dcd6db114c137e94c:\Users\"%CurrentUserName%"\AppData\Local\Temp\1.exe
31fa5823920098fb54bd71bcea4ceca4c:\Users\"%CurrentUserName%"\AppData\Local\Temp\2.exe
ffcf263a020aa7794015af0edee5df0bc:\Users\"%CurrentUserName%"\AppData\Local\Temp\is-8EQLT.tmp\2.tmp
9c4f9dd9612fa215dcd6db114c137e94c:\Users\"%CurrentUserName%"\AppData\Local\aZos091\explorer.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):

    1.exe:2944
    %original file name%.exe:2956
    2.exe:440

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

    C:\Users\"%CurrentUserName%"\AppData\Local\aZos091\explorer.exe (742 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\1.exe (1487 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\2.exe (1024 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\is-8EQLT.tmp\2.tmp (1423 bytes)

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

    [HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce]
    "2aZos0912" = "C:\Users\"%CurrentUserName%"\AppData\Local\aZos091\explorer.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: 0.0.0.0
Legal Copyright:
Legal Trademarks:
Original Filename: ipvanish-setup.exe
Internal Name: ipvanish-setup.exe
File Version: 0.0.0.0
File Description:
Comments:
Language: English (United States)

Company Name: Product Name: Product Version: 0.0.0.0 Legal Copyright: Legal Trademarks: Original Filename: ipvanish-setup.exe Internal Name: ipvanish-setup.exe File Version: 0.0.0.0 File Description: Comments: Language: English (United States)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text8192770802077086725.5418280416975f89d92b1e4e9fb65712f0f80
.rsrc771686470440960.4913972bb00d5a2d4297ef1d1bb8490c2ea1b7
.reloc77250561240960.0113731e06198277f8c9b226bec5fe88fe3a23

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL IP
pool.minexmr.com188.165.214.76

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

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

Strings from Dumps