Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    20-12-2021 09:06

General

  • Target

    tts_211.exe

  • Size

    1.8MB

  • MD5

    9a468b8d65c5e178f7f102aba60c098c

  • SHA1

    b8ab231f494f2c158f433b1c213ef557492b5148

  • SHA256

    41ae4a22dbe73a3263a6556f0dd96a1e12909b23b69c9f93f3e86a5821aaa0ed

  • SHA512

    838c16f2942e1b0796e7ff440c6dd1f3e0266ab0d1ce0cb78798388aa13bff3c28d0ce8ffa13f202d3bbfaeedf15a722f04315f3ef6d2efb624fb342a25d84cb

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

volc.ddns.net:21501

Attributes
  • communication_password

    d57285fa81b86687bf3a97dc3255ad98

  • tor_process

    tor

Signatures

  • BitRAT

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

  • suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)

    suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)

  • UPX packed file 4 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tts_211.exe
    "C:\Users\Admin\AppData\Local\Temp\tts_211.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3880
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
      2⤵
        PID:376
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
        2⤵
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1140

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1140-130-0x0000000000400000-0x00000000007E5000-memory.dmp

      Filesize

      3.9MB

    • memory/1140-135-0x0000000000400000-0x00000000007E5000-memory.dmp

      Filesize

      3.9MB

    • memory/1140-134-0x0000000000400000-0x00000000007E5000-memory.dmp

      Filesize

      3.9MB

    • memory/1140-133-0x00000000009D0000-0x00000000009D1000-memory.dmp

      Filesize

      4KB

    • memory/1140-132-0x00000000009D0000-0x00000000009D1000-memory.dmp

      Filesize

      4KB

    • memory/3880-120-0x0000000005270000-0x0000000005473000-memory.dmp

      Filesize

      2.0MB

    • memory/3880-129-0x0000000005940000-0x0000000005B53000-memory.dmp

      Filesize

      2.1MB

    • memory/3880-124-0x00000000048E0000-0x00000000048EC000-memory.dmp

      Filesize

      48KB

    • memory/3880-125-0x0000000005880000-0x0000000005881000-memory.dmp

      Filesize

      4KB

    • memory/3880-126-0x0000000004920000-0x0000000004932000-memory.dmp

      Filesize

      72KB

    • memory/3880-127-0x0000000004940000-0x000000000494B000-memory.dmp

      Filesize

      44KB

    • memory/3880-128-0x00000000057C0000-0x00000000057C1000-memory.dmp

      Filesize

      4KB

    • memory/3880-122-0x00000000048E0000-0x0000000004903000-memory.dmp

      Filesize

      140KB

    • memory/3880-121-0x00000000056D0000-0x0000000005842000-memory.dmp

      Filesize

      1.4MB

    • memory/3880-115-0x0000000000380000-0x0000000000381000-memory.dmp

      Filesize

      4KB

    • memory/3880-119-0x0000000004FB0000-0x0000000004FB1000-memory.dmp

      Filesize

      4KB

    • memory/3880-118-0x0000000004FC0000-0x0000000005163000-memory.dmp

      Filesize

      1.6MB

    • memory/3880-117-0x0000000004DC0000-0x0000000004DC3000-memory.dmp

      Filesize

      12KB

    • memory/3880-116-0x0000000004E40000-0x0000000004E41000-memory.dmp

      Filesize

      4KB