Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 14:47

General

  • Target

    21cabd77124daa5365171111e599e0d1451b11f2d8d051eef184fac01837f855.exe

  • Size

    839KB

  • MD5

    716a5a605210a120fbf1ff9e5c51f05f

  • SHA1

    b471a3fdea022668e3f57c9c1f0172f821b3e9d2

  • SHA256

    21cabd77124daa5365171111e599e0d1451b11f2d8d051eef184fac01837f855

  • SHA512

    e867601e8648e2508961a26d9bd33f560165425f16dfbd695ecf7d9d54052cbfeb35bcbed316eb3116fb236b4987a2b238cf7f62c046a4bd534b30105979ba82

  • SSDEEP

    12288:QTIHhdXKcl+XRhORnhRZxdGJAVGWuCAIMd0coVXi3W8vsoxDrS7YlX:Qq3XK6+X3OR3Zxd6UwCydGVkW83Dr

Malware Config

Extracted

Family

darkcomet

Botnet

Victims

C2

mrchbk.noip.me:2123

Mutex

DC_MUTEX-EZ6YFTY

Attributes
  • gencode

    4FUM8Qy2Ej7F

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 2 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\21cabd77124daa5365171111e599e0d1451b11f2d8d051eef184fac01837f855.exe
    "C:\Users\Admin\AppData\Local\Temp\21cabd77124daa5365171111e599e0d1451b11f2d8d051eef184fac01837f855.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1272
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2012
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1180
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1488
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1828
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          PID:1644

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe

    Filesize

    839KB

    MD5

    716a5a605210a120fbf1ff9e5c51f05f

    SHA1

    b471a3fdea022668e3f57c9c1f0172f821b3e9d2

    SHA256

    21cabd77124daa5365171111e599e0d1451b11f2d8d051eef184fac01837f855

    SHA512

    e867601e8648e2508961a26d9bd33f560165425f16dfbd695ecf7d9d54052cbfeb35bcbed316eb3116fb236b4987a2b238cf7f62c046a4bd534b30105979ba82

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe

    Filesize

    839KB

    MD5

    716a5a605210a120fbf1ff9e5c51f05f

    SHA1

    b471a3fdea022668e3f57c9c1f0172f821b3e9d2

    SHA256

    21cabd77124daa5365171111e599e0d1451b11f2d8d051eef184fac01837f855

    SHA512

    e867601e8648e2508961a26d9bd33f560165425f16dfbd695ecf7d9d54052cbfeb35bcbed316eb3116fb236b4987a2b238cf7f62c046a4bd534b30105979ba82

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe

    Filesize

    6KB

    MD5

    c677bce7b149928e92e3dd82986b5de6

    SHA1

    4918e2da147258648fb783d4bf0690651184438c

    SHA256

    d3c76f694a366c6faf639fe422479abda26c3fc139969fa1cff2d315af2029ef

    SHA512

    255458271f88a0dc63ae36a6fa0a062e8e2531ba27046184934a558dd57412977f70aba5476cc60d65c32e8c1ce4d050d7a511bd18c880c9137f3c7e0e038ef8

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe

    Filesize

    6KB

    MD5

    c677bce7b149928e92e3dd82986b5de6

    SHA1

    4918e2da147258648fb783d4bf0690651184438c

    SHA256

    d3c76f694a366c6faf639fe422479abda26c3fc139969fa1cff2d315af2029ef

    SHA512

    255458271f88a0dc63ae36a6fa0a062e8e2531ba27046184934a558dd57412977f70aba5476cc60d65c32e8c1ce4d050d7a511bd18c880c9137f3c7e0e038ef8

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe

    Filesize

    6KB

    MD5

    c677bce7b149928e92e3dd82986b5de6

    SHA1

    4918e2da147258648fb783d4bf0690651184438c

    SHA256

    d3c76f694a366c6faf639fe422479abda26c3fc139969fa1cff2d315af2029ef

    SHA512

    255458271f88a0dc63ae36a6fa0a062e8e2531ba27046184934a558dd57412977f70aba5476cc60d65c32e8c1ce4d050d7a511bd18c880c9137f3c7e0e038ef8

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe

    Filesize

    6KB

    MD5

    c677bce7b149928e92e3dd82986b5de6

    SHA1

    4918e2da147258648fb783d4bf0690651184438c

    SHA256

    d3c76f694a366c6faf639fe422479abda26c3fc139969fa1cff2d315af2029ef

    SHA512

    255458271f88a0dc63ae36a6fa0a062e8e2531ba27046184934a558dd57412977f70aba5476cc60d65c32e8c1ce4d050d7a511bd18c880c9137f3c7e0e038ef8

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe

    Filesize

    839KB

    MD5

    716a5a605210a120fbf1ff9e5c51f05f

    SHA1

    b471a3fdea022668e3f57c9c1f0172f821b3e9d2

    SHA256

    21cabd77124daa5365171111e599e0d1451b11f2d8d051eef184fac01837f855

    SHA512

    e867601e8648e2508961a26d9bd33f560165425f16dfbd695ecf7d9d54052cbfeb35bcbed316eb3116fb236b4987a2b238cf7f62c046a4bd534b30105979ba82

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe

    Filesize

    6KB

    MD5

    c677bce7b149928e92e3dd82986b5de6

    SHA1

    4918e2da147258648fb783d4bf0690651184438c

    SHA256

    d3c76f694a366c6faf639fe422479abda26c3fc139969fa1cff2d315af2029ef

    SHA512

    255458271f88a0dc63ae36a6fa0a062e8e2531ba27046184934a558dd57412977f70aba5476cc60d65c32e8c1ce4d050d7a511bd18c880c9137f3c7e0e038ef8

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe

    Filesize

    6KB

    MD5

    c677bce7b149928e92e3dd82986b5de6

    SHA1

    4918e2da147258648fb783d4bf0690651184438c

    SHA256

    d3c76f694a366c6faf639fe422479abda26c3fc139969fa1cff2d315af2029ef

    SHA512

    255458271f88a0dc63ae36a6fa0a062e8e2531ba27046184934a558dd57412977f70aba5476cc60d65c32e8c1ce4d050d7a511bd18c880c9137f3c7e0e038ef8

  • memory/1180-84-0x00000000744A0000-0x0000000074A4B000-memory.dmp

    Filesize

    5.7MB

  • memory/1180-92-0x00000000744A0000-0x0000000074A4B000-memory.dmp

    Filesize

    5.7MB

  • memory/1180-82-0x00000000744A0000-0x0000000074A4B000-memory.dmp

    Filesize

    5.7MB

  • memory/1180-77-0x0000000000000000-mapping.dmp

  • memory/1272-54-0x0000000075531000-0x0000000075533000-memory.dmp

    Filesize

    8KB

  • memory/1272-93-0x00000000744A0000-0x0000000074A4B000-memory.dmp

    Filesize

    5.7MB

  • memory/1272-56-0x00000000744A0000-0x0000000074A4B000-memory.dmp

    Filesize

    5.7MB

  • memory/1272-55-0x00000000744A0000-0x0000000074A4B000-memory.dmp

    Filesize

    5.7MB

  • memory/1488-90-0x00000000744A0000-0x0000000074A4B000-memory.dmp

    Filesize

    5.7MB

  • memory/1488-87-0x0000000000000000-mapping.dmp

  • memory/1488-91-0x00000000744A0000-0x0000000074A4B000-memory.dmp

    Filesize

    5.7MB

  • memory/1644-114-0x0000000000000000-mapping.dmp

  • memory/1644-120-0x00000000744A0000-0x0000000074A4B000-memory.dmp

    Filesize

    5.7MB

  • memory/1644-119-0x00000000744A0000-0x0000000074A4B000-memory.dmp

    Filesize

    5.7MB

  • memory/1828-109-0x000000000048F888-mapping.dmp

  • memory/1828-118-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-64-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-60-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-66-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-81-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-83-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-62-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-73-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-67-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-75-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-58-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-57-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-69-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-71-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2012-72-0x000000000048F888-mapping.dmp