Analysis

  • max time kernel
    161s
  • max time network
    172s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    21-01-2022 23:00

General

  • Target

    BHC-PR/BHC PR - British Airways Restarts Flights to Pakistan.exe

  • Size

    265KB

  • MD5

    aa2081abe728ee1cc658dd0362bc464f

  • SHA1

    811cc8f3095fee20a1c6f5041c243fbf39ae8fcf

  • SHA256

    a22f6dc3eb0001c2be76d261721a1c1f419e15f6b5bfff95c5b8a5f633ce1956

  • SHA512

    621883b9cc461656f9f70e3f4dcd26f5827a007cc194d535bba414f5f8b406ee0f2edd6269617a2a947dfb60ea2c0176e840798802c6c8fb9ffb9a55c511f5f1

Score
10/10

Malware Config

Signatures

  • CrimsonRAT Main Payload 2 IoCs
  • CrimsonRat

    Crimson RAT is a malware linked to a Pakistani-linked threat actor.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BHC-PR\BHC PR - British Airways Restarts Flights to Pakistan.exe
    "C:\Users\Admin\AppData\Local\Temp\BHC-PR\BHC PR - British Airways Restarts Flights to Pakistan.exe"
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4048
    • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
      "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Documents\BHC PR - British Airways Restarts Flights to Pakistan-03-.docx" /o ""
      2⤵
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:1656
    • C:\ProgramData\Hanthavra\rnthiavesa.exe
      "C:\ProgramData\Hanthavra\rnthiavesa.exe"
      2⤵
      • Executes dropped EXE
      PID:2704

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\Hanthavra\rnthiavesa.exe

    MD5

    93e588df26c62a47d3564e58ec988368

    SHA1

    fcd11555531f636245d4c03f151dceb62ba72f6e

    SHA256

    6cecd33e717c607ce578942e35c020d7571a7db67ce9270f9dcff30018a666cc

    SHA512

    0f1f527eed767036dd6323fb5bfbf3e83fc7c2ef842c6d297742d536f8b1ae5b0b54a8ef83fe26f42916656feb0752badb6a39e63067a7dc6fe3e0797738a8ef

  • C:\ProgramData\Hanthavra\rnthiavesa.exe

    MD5

    93e588df26c62a47d3564e58ec988368

    SHA1

    fcd11555531f636245d4c03f151dceb62ba72f6e

    SHA256

    6cecd33e717c607ce578942e35c020d7571a7db67ce9270f9dcff30018a666cc

    SHA512

    0f1f527eed767036dd6323fb5bfbf3e83fc7c2ef842c6d297742d536f8b1ae5b0b54a8ef83fe26f42916656feb0752badb6a39e63067a7dc6fe3e0797738a8ef

  • C:\Users\Admin\Documents\BHC PR - British Airways Restarts Flights to Pakistan-03-.docx

    MD5

    19eeb247e5e81e212fa64aa19c142014

    SHA1

    1a8ce7d52d5e866bda957f659e29cea50a2ae849

    SHA256

    3220fb8cee40d09ac6769e6ebb8f86b8ed54ff10eebf5ba01ab08d8431d98c80

    SHA512

    8da9bd1fb3493bc4d624188b82772d643132eb35741cf39e7edf561f0e8984e8510f868658f2e1e27a3fa9195f6cd80a19934bc3fcdd6d5a6df5535e7987b425

  • memory/1656-132-0x00007FFB36410000-0x00007FFB36420000-memory.dmp

    Filesize

    64KB

  • memory/1656-123-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

    Filesize

    64KB

  • memory/1656-124-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

    Filesize

    64KB

  • memory/1656-125-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

    Filesize

    64KB

  • memory/1656-126-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

    Filesize

    64KB

  • memory/1656-127-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

    Filesize

    64KB

  • memory/1656-133-0x00007FFB36410000-0x00007FFB36420000-memory.dmp

    Filesize

    64KB

  • memory/2704-122-0x00000237B1860000-0x00000237B220A000-memory.dmp

    Filesize

    9.7MB

  • memory/2704-129-0x00000237CD6F0000-0x00000237CD6F2000-memory.dmp

    Filesize

    8KB

  • memory/4048-128-0x0000000002222000-0x0000000002224000-memory.dmp

    Filesize

    8KB

  • memory/4048-118-0x0000000002220000-0x0000000002222000-memory.dmp

    Filesize

    8KB