Analysis

  • max time kernel
    153s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 20:45

General

  • Target

    9D2EBAF8BFAD87755256C2EB157012C48451A4B2E000E.exe

  • Size

    1.4MB

  • MD5

    58057bc14bb02355b92eef89f09a98d1

  • SHA1

    c8cf2033452aad5b005f61ce794779bbffd11884

  • SHA256

    9d2ebaf8bfad87755256c2eb157012c48451a4b2e000e9b220466c37481f81b7

  • SHA512

    adc793282eabe28caeac1039ad3f2c004276dba2cd44468444739640f2794373eeddc8bd19d63017e6d1be9d3e0c3cdda85dd67e160ae39b06d2ae4a1084e396

  • SSDEEP

    24576:8ndRKZCy2BrhCeU2i2cJijFbCBTPmiY05tJMSQp5ysA7Yg1nLkz/H52udi:GXDFBU2iIBb0xY/6sUYYoHD

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

omglunie.hopto.org:4777

Attributes
  • communication_password

    81dc9bdb52d04dc20036dbd8313ed055

  • install_dir

    Discord

  • install_file

    Update.exe

  • tor_process

    tor

Signatures

  • BitRAT

    BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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 NtSetInformationThreadHideFromDebugger 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: RenamesItself 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9D2EBAF8BFAD87755256C2EB157012C48451A4B2E000E.exe
    "C:\Users\Admin\AppData\Local\Temp\9D2EBAF8BFAD87755256C2EB157012C48451A4B2E000E.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4920
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\5iWUVJSO.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:396
      • C:\Windows\system32\timeout.exe
        timeout /t 5 /nobreak
        3⤵
        • Delays execution with timeout.exe
        PID:5104

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\5iWUVJSO.bat

    Filesize

    331B

    MD5

    326b244c6a159dcc8baa7dcb1f2f3230

    SHA1

    df866e4173915ae0e7af315021ccfdf2336108f6

    SHA256

    d54adb4136f9e4558cc66fc65006f898b02e701386c2189870f2eea39005acda

    SHA512

    be926f1b5966ceb9e67ed38d1428d07c39963c87f88b133f3aeac44ba8ba6cca4e97690e4026edd04bbc060793aa563340bd61eceb2926d2e48c3fb416087f3f

  • memory/396-137-0x0000000000000000-mapping.dmp

  • memory/4920-132-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/4920-133-0x0000000074E90000-0x0000000074EC9000-memory.dmp

    Filesize

    228KB

  • memory/4920-134-0x0000000074B50000-0x0000000074B89000-memory.dmp

    Filesize

    228KB

  • memory/4920-135-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/4920-136-0x0000000074B50000-0x0000000074B89000-memory.dmp

    Filesize

    228KB

  • memory/4920-138-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/4920-139-0x0000000074B50000-0x0000000074B89000-memory.dmp

    Filesize

    228KB

  • memory/5104-141-0x0000000000000000-mapping.dmp