Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-03-2023 02:06

General

  • Target

    88ab07c52703743422b32c40089601ed.exe

  • Size

    72KB

  • MD5

    88ab07c52703743422b32c40089601ed

  • SHA1

    5c3bf16f3db88862a66e99912e6fb82e25ce3a10

  • SHA256

    790ec551f63688e1dbeffa8e41660dca92a554e5960f8c8095b92b0b7e78fc99

  • SHA512

    bf7dc6ba3c378c226bb2f9226219c2267f21c605c7ca28b1ba13f03e248e0a138f307ea4f3d5c84cb5f23af034094968fee1536b9e93bf24bfe70545f9ec68df

  • SSDEEP

    192:G2pN99ZwLa9l7X4nuInO+++++++++++++++++++++++++++++++++++++++++++j:Gsv9WL4xmhZilZq4KCm+ApH1ThO/Ff

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

pradeepprabhu705.hopto.org:312

Attributes
  • communication_password

    827ccb0eea8a706c4c34a16891f84e7b

  • tor_process

    tor

Signatures

  • BitRAT

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

  • 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
  • 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 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\88ab07c52703743422b32c40089601ed.exe
    "C:\Users\Admin\AppData\Local\Temp\88ab07c52703743422b32c40089601ed.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:1796
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMQAyADIA
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3804
    • C:\Users\Admin\AppData\Local\Temp\88ab07c52703743422b32c40089601ed.exe
      C:\Users\Admin\AppData\Local\Temp\88ab07c52703743422b32c40089601ed.exe purecrypter.exe
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:228

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:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4mmpq3lj.ud5.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/228-173-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-175-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-185-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-164-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-165-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-183-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-180-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-179-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-178-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-177-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-176-0x0000000074E70000-0x0000000074EA9000-memory.dmp
    Filesize

    228KB

  • memory/228-174-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-172-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-171-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-170-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-169-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-166-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-162-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-168-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/228-184-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

  • memory/1796-134-0x0000000004AE0000-0x0000000004AF0000-memory.dmp
    Filesize

    64KB

  • memory/1796-135-0x0000000005900000-0x0000000005922000-memory.dmp
    Filesize

    136KB

  • memory/1796-155-0x0000000004AE0000-0x0000000004AF0000-memory.dmp
    Filesize

    64KB

  • memory/1796-133-0x0000000000120000-0x0000000000138000-memory.dmp
    Filesize

    96KB

  • memory/3804-154-0x00000000034F0000-0x0000000003500000-memory.dmp
    Filesize

    64KB

  • memory/3804-157-0x00000000034F0000-0x0000000003500000-memory.dmp
    Filesize

    64KB

  • memory/3804-156-0x00000000034F0000-0x0000000003500000-memory.dmp
    Filesize

    64KB

  • memory/3804-151-0x00000000068D0000-0x00000000068EE000-memory.dmp
    Filesize

    120KB

  • memory/3804-152-0x0000000007FF0000-0x000000000866A000-memory.dmp
    Filesize

    6.5MB

  • memory/3804-158-0x00000000034F0000-0x0000000003500000-memory.dmp
    Filesize

    64KB

  • memory/3804-136-0x00000000032F0000-0x0000000003326000-memory.dmp
    Filesize

    216KB

  • memory/3804-146-0x0000000006320000-0x0000000006386000-memory.dmp
    Filesize

    408KB

  • memory/3804-137-0x0000000005BF0000-0x0000000006218000-memory.dmp
    Filesize

    6.2MB

  • memory/3804-140-0x0000000005AD0000-0x0000000005B36000-memory.dmp
    Filesize

    408KB

  • memory/3804-139-0x00000000034F0000-0x0000000003500000-memory.dmp
    Filesize

    64KB

  • memory/3804-138-0x00000000034F0000-0x0000000003500000-memory.dmp
    Filesize

    64KB

  • memory/3804-153-0x00000000079A0000-0x00000000079BA000-memory.dmp
    Filesize

    104KB