Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-02-2023 12:47

General

  • Target

    ogbanseef.exe

  • Size

    2.4MB

  • MD5

    df95e42d4edb19dc4b94941f2b613492

  • SHA1

    39037e64ebf0763a42ff4d0312d776d51bbbf06d

  • SHA256

    ee116c48b8e4a3fd0e805b90b03ece7fee2e141d05a386a44bf3725b41d7a534

  • SHA512

    0a98fbb4bfb9647ddb92c2bfea3504831d29d76274a206d07e88fe5dbf41d8544633008d5d1f2ecfb9390043e14090e1b1812bc41f2519d0d0943c8d3f0227fa

  • SSDEEP

    49152:No981ADu1skJBigljMWzOVgEwmiJQgWW4O:N/AUzZYg8iJQw4

Malware Config

Extracted

Family

remcos

Version

2.7.1 Pro

Botnet

OGBMANNY

C2

91.231.84.41:52651

127.0.0.1:52651

10.5.175.21:52651

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-B15393

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    wikipedia;solitaire;

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • 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 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
    "C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3180
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4584
    • C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
      C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
      2⤵
        PID:4964

    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

    • memory/3180-132-0x0000000000EC0000-0x0000000001122000-memory.dmp
      Filesize

      2.4MB

    • memory/3180-133-0x0000000005D50000-0x0000000005D72000-memory.dmp
      Filesize

      136KB

    • memory/4584-134-0x0000000000000000-mapping.dmp
    • memory/4584-135-0x0000000002460000-0x0000000002496000-memory.dmp
      Filesize

      216KB

    • memory/4584-136-0x0000000004C40000-0x0000000005268000-memory.dmp
      Filesize

      6.2MB

    • memory/4584-137-0x0000000005360000-0x00000000053C6000-memory.dmp
      Filesize

      408KB

    • memory/4584-138-0x00000000053D0000-0x0000000005436000-memory.dmp
      Filesize

      408KB

    • memory/4584-139-0x0000000005A40000-0x0000000005A5E000-memory.dmp
      Filesize

      120KB

    • memory/4584-140-0x00000000072B0000-0x000000000792A000-memory.dmp
      Filesize

      6.5MB

    • memory/4584-141-0x0000000005EC0000-0x0000000005EDA000-memory.dmp
      Filesize

      104KB

    • memory/4964-142-0x0000000000000000-mapping.dmp
    • memory/4964-143-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/4964-145-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/4964-146-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/4964-147-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB