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Analysis

  • max time kernel
    119s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2024, 05:57

General

  • Target

    1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe

  • Size

    91KB

  • MD5

    758bace8cda039bf69fc0911e57c0b70

  • SHA1

    cd38f2833fc1f3ef0935fea64835df0adb18224a

  • SHA256

    1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5b

  • SHA512

    021c2eb621bc84d264cfe20334bfbe4981a69fb675bba9fc90db4c4fd26837daf0a8b69590d35bafb4860688af0d9a37142350a698964b09b24d162587780f90

  • SSDEEP

    1536:It/CUcGlrtCdnbDfHmGROwzcWEniB6b6eOyRuC6ZN/9w7bOHjQPjn:kCqBCd/fhROw1EA6b6eTuFNFw7bODQLn

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:63419

Attributes
  • Install_directory

    %AppData%

  • install_file

    зсу.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe
    "C:\Users\Admin\AppData\Local\Temp\1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4112
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2968
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5bN.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3140
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\зсу.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:548
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'зсу.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5084
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "зсу" /tr "C:\Users\Admin\AppData\Roaming\зсу.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1556
  • C:\Users\Admin\AppData\Roaming\зсу.exe
    C:\Users\Admin\AppData\Roaming\зсу.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3228
  • C:\Users\Admin\AppData\Roaming\зсу.exe
    C:\Users\Admin\AppData\Roaming\зсу.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1976

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\зсу.exe.log

    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    77d622bb1a5b250869a3238b9bc1402b

    SHA1

    d47f4003c2554b9dfc4c16f22460b331886b191b

    SHA256

    f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

    SHA512

    d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    eb033be02578f9635ec47bdc1de5c3fb

    SHA1

    ec356bc87381354a06baa9c30e8c3ac3d30e0f6f

    SHA256

    bd827af3192bf83c75a32e51ed2de83bd3b90d6b99350721a189a57cec15d063

    SHA512

    4d8778503646f7016df73ff9d204760f4fe4d2b24157920ac3e5651653373975b2f2d229530143059f11b16c42822ad7963e628ad6066022ee712c17d90595ed

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    e7e044b359984899f97f0cd82ee44f3c

    SHA1

    a654639b5bf4ecf88c573dbcf94750b7995d9814

    SHA256

    225c40be10f6cab1046aa14ba6ef81389b20ee52caa137c89833ff6d33191f67

    SHA512

    92eb58b2289b17fc0894165ac52214d8a2161f99d21c018325ae87a9d1f904e17f0a7894b30050d7c202c3abddb9913dc25686449f9f9170731e7c6229861550

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bhknhzh0.t1l.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Roaming\зсу.exe

    Filesize

    91KB

    MD5

    758bace8cda039bf69fc0911e57c0b70

    SHA1

    cd38f2833fc1f3ef0935fea64835df0adb18224a

    SHA256

    1a2054fcc986058de7b392795325a85d83ce9612537457b7edd03e8f6ff8dc5b

    SHA512

    021c2eb621bc84d264cfe20334bfbe4981a69fb675bba9fc90db4c4fd26837daf0a8b69590d35bafb4860688af0d9a37142350a698964b09b24d162587780f90

  • memory/2968-4-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

    Filesize

    10.8MB

  • memory/2968-18-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

    Filesize

    10.8MB

  • memory/2968-15-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

    Filesize

    10.8MB

  • memory/2968-14-0x0000020CECC80000-0x0000020CECCA2000-memory.dmp

    Filesize

    136KB

  • memory/2968-3-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

    Filesize

    10.8MB

  • memory/4112-0-0x00007FF95A9B3000-0x00007FF95A9B5000-memory.dmp

    Filesize

    8KB

  • memory/4112-54-0x00007FF95A9B3000-0x00007FF95A9B5000-memory.dmp

    Filesize

    8KB

  • memory/4112-55-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

    Filesize

    10.8MB

  • memory/4112-2-0x00007FF95A9B0000-0x00007FF95B471000-memory.dmp

    Filesize

    10.8MB

  • memory/4112-1-0x00000000008D0000-0x00000000008EE000-memory.dmp

    Filesize

    120KB