Analysis

  • max time kernel
    143s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-09-2022 11:14

General

  • Target

    9c512797b50b536a82baf18fc9fb3077.exe

  • Size

    602KB

  • MD5

    9c512797b50b536a82baf18fc9fb3077

  • SHA1

    bd9fc65cb2d62474e510c74e93e8475096661e8c

  • SHA256

    5ba33d60c4483c65ed0515ab6068a7bd3d429dd80392aa4864070a08c42223c5

  • SHA512

    e20abf9a3a0e6d482cc68b8dd6ba809cb3f5dee3e5f326ff05e38fa565f51a8f65b4338bc84fecc871275a6538a401909cbc87fda5e0a852bb6cff06a356ee53

  • SSDEEP

    6144:BBcIhrEveSkYMiYV3URBSDdZgBNAtFySYODL8QS:B/hroLMP3kEgBNAt2QL8QS

Malware Config

Extracted

Family

colibri

Version

1.2.0

Botnet

Build1

C2

http://zpltcmgodhvvedxtfcygvbgjkvgvcguygytfigj.cc/gate.php

http://yugyuvyugguitgyuigtfyutdtoghghbbgyv.cx/gate.php

Signatures

  • Colibri Loader

    A loader sold as MaaS first seen in August 2021.

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9c512797b50b536a82baf18fc9fb3077.exe
    "C:\Users\Admin\AppData\Local\Temp\9c512797b50b536a82baf18fc9fb3077.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:684
    • C:\ProgramData\conhost.exe
      "C:\ProgramData\conhost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:980
      • C:\ProgramData\conhost.exe
        "C:\ProgramData\conhost.exe"
        3⤵
        • Executes dropped EXE
        PID:4524
    • C:\Users\Admin\AppData\Local\Temp\9c512797b50b536a82baf18fc9fb3077.exe
      "C:\Users\Admin\AppData\Local\Temp\9c512797b50b536a82baf18fc9fb3077.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1268
      • C:\Users\Admin\AppData\Local\Temp\9c512797b50b536a82baf18fc9fb3077.exe
        "C:\Users\Admin\AppData\Local\Temp\9c512797b50b536a82baf18fc9fb3077.exe"
        3⤵
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:116
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c start C:\Users\Admin\AppData\Roaming\MSEdge\msedge.exe
          4⤵
          • Checks computer location settings
          • Suspicious use of SetWindowsHookEx
          PID:376

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\conhost.exe
    Filesize

    75KB

    MD5

    e0a68b98992c1699876f818a22b5b907

    SHA1

    d41e8ad8ba51217eb0340f8f69629ccb474484d0

    SHA256

    2b00d8c2bcc6b48e90524cdd41a07735dc94548ed41925baff86e43a61a4c37f

    SHA512

    856854f5fd89ae1669e4b2db10b73b4a78496bf80117003244c83e781f75e533e2e2bea9aa6c1b3aba3db1ed92ea0ed9755fbfd78cd6c86ba95867d07fc0ece2

  • C:\ProgramData\conhost.exe
    Filesize

    75KB

    MD5

    e0a68b98992c1699876f818a22b5b907

    SHA1

    d41e8ad8ba51217eb0340f8f69629ccb474484d0

    SHA256

    2b00d8c2bcc6b48e90524cdd41a07735dc94548ed41925baff86e43a61a4c37f

    SHA512

    856854f5fd89ae1669e4b2db10b73b4a78496bf80117003244c83e781f75e533e2e2bea9aa6c1b3aba3db1ed92ea0ed9755fbfd78cd6c86ba95867d07fc0ece2

  • C:\ProgramData\conhost.exe
    Filesize

    75KB

    MD5

    e0a68b98992c1699876f818a22b5b907

    SHA1

    d41e8ad8ba51217eb0340f8f69629ccb474484d0

    SHA256

    2b00d8c2bcc6b48e90524cdd41a07735dc94548ed41925baff86e43a61a4c37f

    SHA512

    856854f5fd89ae1669e4b2db10b73b4a78496bf80117003244c83e781f75e533e2e2bea9aa6c1b3aba3db1ed92ea0ed9755fbfd78cd6c86ba95867d07fc0ece2

  • memory/116-146-0x0000000000000000-mapping.dmp
  • memory/116-155-0x0000000001210000-0x0000000001246000-memory.dmp
    Filesize

    216KB

  • memory/116-152-0x0000000001210000-0x0000000001246000-memory.dmp
    Filesize

    216KB

  • memory/116-147-0x0000000001210000-0x0000000001246000-memory.dmp
    Filesize

    216KB

  • memory/376-157-0x0000000000000000-mapping.dmp
  • memory/684-133-0x0000000001195000-0x00000000011A8000-memory.dmp
    Filesize

    76KB

  • memory/980-132-0x0000000000000000-mapping.dmp
  • memory/1268-149-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1268-143-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1268-142-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1268-141-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1268-138-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/1268-137-0x0000000000000000-mapping.dmp
  • memory/4524-136-0x0000000000000000-mapping.dmp
  • memory/4524-139-0x0000000000400000-0x0000000000407000-memory.dmp
    Filesize

    28KB

  • memory/4524-156-0x0000000000400000-0x0000000000407000-memory.dmp
    Filesize

    28KB