Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 10:12

General

  • Target

    f582179374bde1f836cb2d8f98f4d6de71e23bfa120d503a3a3eb8e0e9d6ac52.exe

  • Size

    1.2MB

  • MD5

    6966f74e9d8f1a376ea379f9fcc206a2

  • SHA1

    3686d3a9a07ed9f9bda256df9cd2e5604c84de2f

  • SHA256

    f582179374bde1f836cb2d8f98f4d6de71e23bfa120d503a3a3eb8e0e9d6ac52

  • SHA512

    0cf914ae8cf954000a526584c01028409188a19ed4b2910618ed458fa76e3fcf5f0df6fb32b8e9b256535f2d07ebee834c7e5357fd3e597b6803bbd0dd1e0336

  • SSDEEP

    12288:C+0Qo6Vv9vkeeP2d+1bmXlZeGB3EHPiiyPP+Mxb1:C+0Z6Vdkeea+1i0iiyPFxZ

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 5 IoCs
  • Adds Run key to start application 2 TTPs 10 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.

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 5 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Kills process with taskkill 3 IoCs
  • Modifies registry class 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f582179374bde1f836cb2d8f98f4d6de71e23bfa120d503a3a3eb8e0e9d6ac52.exe
    "C:\Users\Admin\AppData\Local\Temp\f582179374bde1f836cb2d8f98f4d6de71e23bfa120d503a3a3eb8e0e9d6ac52.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4856
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\FB_98E9.tmp.vbs"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Drops startup file
      • Adds Run key to start application
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4980
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /F /IM SpyTheSpy.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4452
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /F /IM TiGeR-Firewall.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1832
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /F /IM bavtray.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:760
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /sc ONLOGON /RL HIGHEST /tn Windows Defencler-DoOoM.vbe /tr "C:\Users\Admin\AppData\Roaming\System\Windows Defencler-DoOoMs.vbs"
        3⤵
        • Creates scheduled task(s)
        PID:828
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /sc ONLOGON /RL HIGHEST /tn Windows Defencler-DoOoM.vbe /tr "C:\Users\Admin\AppData\Roaming\System\Windows Defencler-DoOoMs.vbs"
        3⤵
        • Creates scheduled task(s)
        PID:3480
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /sc ONLOGON /RL HIGHEST /tn Windows Defencler-DoOoM.vbe /tr "C:\Users\Admin\AppData\Roaming\System\Windows Defencler-DoOoMs.vbs"
        3⤵
        • Creates scheduled task(s)
        PID:396
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /sc ONLOGON /RL HIGHEST /tn Windows Defencler-DoOoM.vbe /tr "C:\Users\Admin\AppData\Roaming\System\Windows Defencler-DoOoMs.vbs"
        3⤵
        • Creates scheduled task(s)
        PID:2972
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /sc ONLOGON /RL HIGHEST /tn Windows Defencler-DoOoM.vbe /tr "C:\Users\Admin\AppData\Roaming\System\Windows Defencler-DoOoMs.vbs"
        3⤵
        • Creates scheduled task(s)
        PID:1984
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\FB_E44B.tmp.vbs"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      PID:4124
    • C:\Users\Admin\AppData\Local\Temp\FB_E49A.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\FB_E49A.tmp.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4896
      • C:\Users\Admin\AppData\Local\Temp\FB_E49A.tmp.exe
        C:\Users\Admin\AppData\Local\Temp\FB_E49A.tmp.exe
        3⤵
        • Executes dropped EXE
        PID:5088
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 5088 -s 80
          4⤵
          • Program crash
          PID:3672
  • C:\Windows\system32\OpenWith.exe
    C:\Windows\system32\OpenWith.exe -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:4948
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 5088 -ip 5088
    1⤵
      PID:4888

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Winlogon Helper DLL

    1
    T1004

    Registry Run Keys / Startup Folder

    1
    T1060

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Modify Registry

    2
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\FB_98E9.tmp.vbs
      Filesize

      535KB

      MD5

      c192fc4bc4e0fbd5aeb10a6dd1352d51

      SHA1

      753144fbb384f7245ffb769d3bb35e0aa800d27d

      SHA256

      4d1105930217a87b178d5d116b54d3bd94c1d8e61d258022e41232307c88c3fd

      SHA512

      1dbae48badfb7d073b47d27f3dd953bb3b11f88b9517eb92c46499d5ec59a8f9c116689cede68966f39d366a85513bf109de8cfabacf7697f3f0a67b044a030e

    • C:\Users\Admin\AppData\Local\Temp\FB_E44B.tmp.vbs
      Filesize

      208KB

      MD5

      d5ede071cdc5b5ff7fad809976515ad0

      SHA1

      f1141aefa5de1572442b66c14ce33448a3658017

      SHA256

      5f9e6543647483d66f53e6ce296321e4ca649d806c26700fbd2da828f2788850

      SHA512

      cc617f626bde4ce30d7639752c63e26b10ee2b4feb05c627d0b963e3d392f1546cedf2d508bec764f95f7e49158a55844d7c56a7c34f18c13ff27b2834facbd4

    • C:\Users\Admin\AppData\Local\Temp\FB_E49A.tmp.exe
      Filesize

      479KB

      MD5

      b529c526c39d32ee04e26e1769b2797f

      SHA1

      236584b8cbcba90c1b331863725d028c3bfea2c2

      SHA256

      e186527d9b0a7c37e045bc021b59b4283330d7ba0196a598d27aa2601be9ad62

      SHA512

      0b1511640daa85fa19688225d12e46f45ea94bc4771c7b44044666e47b022dd633d8f0da1f7fd6788cf048c94897bfa884b7e847375d538c4fbe66b41f1421db

    • C:\Users\Admin\AppData\Local\Temp\FB_E49A.tmp.exe
      Filesize

      479KB

      MD5

      b529c526c39d32ee04e26e1769b2797f

      SHA1

      236584b8cbcba90c1b331863725d028c3bfea2c2

      SHA256

      e186527d9b0a7c37e045bc021b59b4283330d7ba0196a598d27aa2601be9ad62

      SHA512

      0b1511640daa85fa19688225d12e46f45ea94bc4771c7b44044666e47b022dd633d8f0da1f7fd6788cf048c94897bfa884b7e847375d538c4fbe66b41f1421db

    • C:\Users\Admin\AppData\Local\Temp\FB_E49A.tmp.exe
      Filesize

      479KB

      MD5

      b529c526c39d32ee04e26e1769b2797f

      SHA1

      236584b8cbcba90c1b331863725d028c3bfea2c2

      SHA256

      e186527d9b0a7c37e045bc021b59b4283330d7ba0196a598d27aa2601be9ad62

      SHA512

      0b1511640daa85fa19688225d12e46f45ea94bc4771c7b44044666e47b022dd633d8f0da1f7fd6788cf048c94897bfa884b7e847375d538c4fbe66b41f1421db

    • memory/396-149-0x0000000000000000-mapping.dmp
    • memory/760-145-0x0000000000000000-mapping.dmp
    • memory/828-146-0x0000000000000000-mapping.dmp
    • memory/1832-144-0x0000000000000000-mapping.dmp
    • memory/1984-151-0x0000000000000000-mapping.dmp
    • memory/2972-150-0x0000000000000000-mapping.dmp
    • memory/3480-148-0x0000000000000000-mapping.dmp
    • memory/4124-133-0x0000000000000000-mapping.dmp
    • memory/4452-143-0x0000000000000000-mapping.dmp
    • memory/4896-147-0x0000000073E60000-0x0000000074411000-memory.dmp
      Filesize

      5.7MB

    • memory/4896-134-0x0000000000000000-mapping.dmp
    • memory/4896-142-0x0000000073E60000-0x0000000074411000-memory.dmp
      Filesize

      5.7MB

    • memory/4980-132-0x0000000000000000-mapping.dmp
    • memory/5088-139-0x0000000000000000-mapping.dmp