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Analysis

  • max time kernel
    184s
  • max time network
    187s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/11/2022, 12:38

General

  • Target

    ad4b63444e1ab0da9be8923f21494927dc9f6577c0fc268f9bc656fd497d2c66.exe

  • Size

    1.1MB

  • MD5

    647c5dde7a82629ee388904031bfa96b

  • SHA1

    c73b8e712703e770d36b301fcf725fd0e6cb88f2

  • SHA256

    ad4b63444e1ab0da9be8923f21494927dc9f6577c0fc268f9bc656fd497d2c66

  • SHA512

    0bc9e989d3a27ef5ed2f1424fab902355c351ac40ecb613cb75a5d60ee295bcfdccd4840bf2f5eb2b15a53acd2cb5a6f37adb6d00e4e80e23268403243dfea5a

  • SSDEEP

    24576:QUKoN0bUxgGa/pfBHDb+y1LXPeCXuLKdsOT:TK1A6ze/KdX

Malware Config

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 8 IoCs
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies security service 2 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Executes dropped EXE 3 IoCs
  • UPX packed file 9 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.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ad4b63444e1ab0da9be8923f21494927dc9f6577c0fc268f9bc656fd497d2c66.exe
    "C:\Users\Admin\AppData\Local\Temp\ad4b63444e1ab0da9be8923f21494927dc9f6577c0fc268f9bc656fd497d2c66.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2348
    • C:\Users\Admin\AppData\Local\Temp\ST.EXE
      "C:\Users\Admin\AppData\Local\Temp\ST.EXE"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1060
      • C:\Users\Admin\AppData\Local\Temp\ST.EXE
        /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
        3⤵
        • Executes dropped EXE
        PID:836
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 4 && del "C:\Users\Admin\AppData\Local\Temp\ad4b63444e1ab0da9be8923f21494927dc9f6577c0fc268f9bc656fd497d2c66.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5116
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 4
        3⤵
        • Runs ping.exe
        PID:3676
    • C:\Users\Admin\AppData\Local\Temp\MSDCSC\mssdcsc.exe
      "C:\Users\Admin\AppData\Local\Temp\MSDCSC\mssdcsc.exe"
      2⤵
      • Modifies security service
      • Windows security bypass
      • Executes dropped EXE
      • Windows security modification
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:216
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies security service
        • Windows security bypass
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2332

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MSDCSC\mssdcsc.exe

    Filesize

    1.1MB

    MD5

    647c5dde7a82629ee388904031bfa96b

    SHA1

    c73b8e712703e770d36b301fcf725fd0e6cb88f2

    SHA256

    ad4b63444e1ab0da9be8923f21494927dc9f6577c0fc268f9bc656fd497d2c66

    SHA512

    0bc9e989d3a27ef5ed2f1424fab902355c351ac40ecb613cb75a5d60ee295bcfdccd4840bf2f5eb2b15a53acd2cb5a6f37adb6d00e4e80e23268403243dfea5a

  • C:\Users\Admin\AppData\Local\Temp\MSDCSC\mssdcsc.exe

    Filesize

    1.1MB

    MD5

    647c5dde7a82629ee388904031bfa96b

    SHA1

    c73b8e712703e770d36b301fcf725fd0e6cb88f2

    SHA256

    ad4b63444e1ab0da9be8923f21494927dc9f6577c0fc268f9bc656fd497d2c66

    SHA512

    0bc9e989d3a27ef5ed2f1424fab902355c351ac40ecb613cb75a5d60ee295bcfdccd4840bf2f5eb2b15a53acd2cb5a6f37adb6d00e4e80e23268403243dfea5a

  • C:\Users\Admin\AppData\Local\Temp\ST.EXE

    Filesize

    196KB

    MD5

    dc5705be7750d65884d7635861f9cb7d

    SHA1

    98d13661de10e746c3abf2758a61f363168f3b09

    SHA256

    413c860837e089e5a84a5519f6e7310785a47a0a2bbb85f6aa2fd5800edf915f

    SHA512

    daa99d665343bf82e202539f003519af64a9a700e59d3fd299afecbb97cafd8ebf96d276095a0d33f8f0d713ef5f051207eb4357863cf7950a81dc54ad3fc4bf

  • C:\Users\Admin\AppData\Local\Temp\ST.EXE

    Filesize

    196KB

    MD5

    dc5705be7750d65884d7635861f9cb7d

    SHA1

    98d13661de10e746c3abf2758a61f363168f3b09

    SHA256

    413c860837e089e5a84a5519f6e7310785a47a0a2bbb85f6aa2fd5800edf915f

    SHA512

    daa99d665343bf82e202539f003519af64a9a700e59d3fd299afecbb97cafd8ebf96d276095a0d33f8f0d713ef5f051207eb4357863cf7950a81dc54ad3fc4bf

  • C:\Users\Admin\AppData\Local\Temp\ST.EXE

    Filesize

    196KB

    MD5

    dc5705be7750d65884d7635861f9cb7d

    SHA1

    98d13661de10e746c3abf2758a61f363168f3b09

    SHA256

    413c860837e089e5a84a5519f6e7310785a47a0a2bbb85f6aa2fd5800edf915f

    SHA512

    daa99d665343bf82e202539f003519af64a9a700e59d3fd299afecbb97cafd8ebf96d276095a0d33f8f0d713ef5f051207eb4357863cf7950a81dc54ad3fc4bf

  • C:\Users\Admin\AppData\Local\Temp\tmp.ini

    Filesize

    5B

    MD5

    d1ea279fb5559c020a1b4137dc4de237

    SHA1

    db6f8988af46b56216a6f0daf95ab8c9bdb57400

    SHA256

    fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

    SHA512

    720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

  • memory/216-152-0x0000000000400000-0x0000000000518000-memory.dmp

    Filesize

    1.1MB

  • memory/836-144-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/836-143-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/836-142-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/836-139-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2348-132-0x0000000000400000-0x0000000000518000-memory.dmp

    Filesize

    1.1MB

  • memory/2348-151-0x0000000000400000-0x0000000000518000-memory.dmp

    Filesize

    1.1MB