Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    29-06-2024 01:46

General

  • Target

    cb22cebed97d6363239f63cf28816b8a8c06977c6d8625a43a61f0afa8823b26.exe

  • Size

    748KB

  • MD5

    457143901d9ca2f0bc836c1dd1faefe3

  • SHA1

    11e554dcfca0dd51c5bfe92d35b9c13b21b81691

  • SHA256

    cb22cebed97d6363239f63cf28816b8a8c06977c6d8625a43a61f0afa8823b26

  • SHA512

    0bd04e37e8f3bb869783661972b83ec8fb6b06727eff27374d2855e714b31cd51b15ada8e46d8b09eda9367dd002f65436785b7962f80f5812396aff3c03c0d0

  • SSDEEP

    12288:Ykpcy+P2t8ysP8ZURBmtxjlk/u6ntgJ2E3P0DtaxoisMLHsXxteTX:Ykpcy5tVZqBmTji/PQP0Zaxd5LHxT

Malware Config

Extracted

Family

xworm

C2

head-experimental.gl.at.ply.gg:46178

best-bird.gl.at.ply.gg:27196

super-nearest.gl.at.ply.gg:17835

Attributes
  • install_file

    USB.exe

Extracted

Family

asyncrat

Botnet

Default

C2

finally-grande.gl.at.ply.gg:25844

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

quasar

Version

3.1.5

Botnet

Slave

C2

stop-largely.gl.at.ply.gg:27116

Mutex

$Sxr-kl1r656AGsPQksTmi8

Attributes
  • encryption_key

    ql4fQ8TV9ZFP9vRX2myA

  • install_name

    $sxr~Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    $77STARTUP~MSF

  • subdirectory

    $sxr~SubDir

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Detect Xworm Payload 6 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Async RAT payload 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

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

  • Executes dropped EXE 7 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 15 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cb22cebed97d6363239f63cf28816b8a8c06977c6d8625a43a61f0afa8823b26.exe
    "C:\Users\Admin\AppData\Local\Temp\cb22cebed97d6363239f63cf28816b8a8c06977c6d8625a43a61f0afa8823b26.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Users\Admin\AppData\Local\Temp\Part1.exe
      "C:\Users\Admin\AppData\Local\Temp\Part1.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2392
      • 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\Part1.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:1948
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Part1.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:572
    • C:\Users\Admin\AppData\Local\Temp\Part2.exe
      "C:\Users\Admin\AppData\Local\Temp\Part2.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2656
      • C:\Users\Admin\AppData\Local\Temp\Part 1.exe
        "C:\Users\Admin\AppData\Local\Temp\Part 1.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2636
        • 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\Part 1.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious use of AdjustPrivilegeToken
          PID:1688
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Part 1.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious use of AdjustPrivilegeToken
          PID:2112
      • C:\Users\Admin\AppData\Local\Temp\Part 2.exe
        "C:\Users\Admin\AppData\Local\Temp\Part 2.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2652
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "$77STARTUP~MSF" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Part 2.exe" /rl HIGHEST /f
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1148
      • C:\Users\Admin\AppData\Local\Temp\Part 3.exe
        "C:\Users\Admin\AppData\Local\Temp\Part 3.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2752
      • C:\Users\Admin\AppData\Local\Temp\Part 4.exe
        "C:\Users\Admin\AppData\Local\Temp\Part 4.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2812
        • 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\Part 4.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious use of AdjustPrivilegeToken
          PID:1520
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Part 4.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious use of AdjustPrivilegeToken
          PID:1368
      • C:\Users\Admin\AppData\Local\Temp\Windows PowerShell.exe
        "C:\Users\Admin\AppData\Local\Temp\Windows PowerShell.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2640

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Discovery

System Information Discovery

1
T1082

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Part 1.exe
    Filesize

    67KB

    MD5

    092a0c6fe885844fd74947e64e7fc11e

    SHA1

    bfe46f64f36f2e927d862a1a787f146ed2c01219

    SHA256

    91431cb73305e0f1fdc698907301b6d312a350f667c50765615672e7f10a68f2

    SHA512

    022589bd17b46e5486971a59b2517956bb15815266e48dc73a7ae9ac9efd42a348af09df471562eb71ffc94ce1e1845d54ca2994663d1496a385bce50ae595f0

  • C:\Users\Admin\AppData\Local\Temp\Part 2.exe
    Filesize

    409KB

    MD5

    e10c7425705b2bd3214fa96247ee21c4

    SHA1

    7603536b97ab6337fa023bafcf80579c2b4059e6

    SHA256

    021068ac225e479b124c33d9e7582c17fdea6e625b165b79e2c818479d8094e4

    SHA512

    47e031992d637fef2a67e4fb08d2d82eaba03eba6b80f3e0e0997153acf0d979d0294276c4a10a97daa50130540230865c56191e6fe8df07dbea11c50fa48a2d

  • C:\Users\Admin\AppData\Local\Temp\Part 3.exe
    Filesize

    63KB

    MD5

    27fe9341167a34f606b800303ac54b1f

    SHA1

    86373d218b48361bff1c23ddd08b6ab1803a51d0

    SHA256

    29e13a91af9b0ac77e9b7f8b0c26e5702f46bd8aea0333ca2d191d1d09c70c5d

    SHA512

    05b83ad544862d9c0cfc2651b2842624cff59fc4f454e0b1a2b36a705b558fad5a834f9f1af9f2626c57f1e3cd9aa400e290eaafb6efeb680422992bcbbde5b0

  • C:\Users\Admin\AppData\Local\Temp\Part 4.exe
    Filesize

    79KB

    MD5

    1f1b23752df3d29e7604ba52aea85862

    SHA1

    bb582c6cf022098b171c4c9c7318a51de29ebcf4

    SHA256

    4834d31394f19d42e8d2a035b4c3c9c36441340ea19fe766396848ecfb608960

    SHA512

    d52722ab73bb15d4a5b0033351f98f168192f382677e6d474f6cf506cf8dc2f5e421e45279b6cac0f074857f41a865d87b5d989450bfcb8eba925b7baa12fbde

  • C:\Users\Admin\AppData\Local\Temp\Part1.exe
    Filesize

    74KB

    MD5

    e35a7249966beef31a45272c53e06727

    SHA1

    cc54648f9c9423f7a625e96256c608791b1ab275

    SHA256

    ecb87965ad5fdc76a30721226b1cb8a6263bbbce476a0446ff730b6399022998

    SHA512

    1dc30dc4a690aa87211db37b8fbc152e2e9e2b2554927296ff62bd4d2a7ab542777faaa4752399719cfe816cf3886b3bb4a90539f3f197dedd52298f2a315114

  • C:\Users\Admin\AppData\Local\Temp\Part2.exe
    Filesize

    661KB

    MD5

    c47c0d681b491091209c54147c33da81

    SHA1

    58cb51be41aa576ce56d4c16c9c443e70e648f62

    SHA256

    429c5dd3f4af9dcaa0ebaefda12281af7c84b3e3aa05d1034ddf89d2bdefb720

    SHA512

    f3a6f9af783910dd94622bb0408385228dfe322487d9d89c140e2e49b8abbc3b9c9f3cb580635166d1ddf6f5b7feeac51380044cf100476d6994adc7cac6cc5c

  • C:\Users\Admin\AppData\Local\Temp\Windows PowerShell.exe
    Filesize

    27KB

    MD5

    4daae2de5a31125d02b057c1ff18d58f

    SHA1

    e1d603edfcc150a4718e2916ae3dda3aa9548dc8

    SHA256

    25510f3aa1b879ea92a3cba9583d73e447b8765bae6dfcc4954bb72df5beaa7f

    SHA512

    7cda96a69f9cddab307f3f08e1f38a4d059f0cc7f7119d4a48891efdb01cf101ebcc06cb2ce0702ea2d689d27ee45faddc0a13cd72503c609c4e544919549a2a

  • memory/1740-1-0x0000000001260000-0x0000000001322000-memory.dmp
    Filesize

    776KB

  • memory/1740-0-0x000007FEF6283000-0x000007FEF6284000-memory.dmp
    Filesize

    4KB

  • memory/2392-7-0x0000000001140000-0x0000000001158000-memory.dmp
    Filesize

    96KB

  • memory/2392-22-0x000007FEF6280000-0x000007FEF6C6C000-memory.dmp
    Filesize

    9.9MB

  • memory/2636-34-0x00000000012D0000-0x00000000012E8000-memory.dmp
    Filesize

    96KB

  • memory/2640-45-0x0000000000950000-0x000000000095E000-memory.dmp
    Filesize

    56KB

  • memory/2640-47-0x00000000001C0000-0x00000000001D0000-memory.dmp
    Filesize

    64KB

  • memory/2652-46-0x00000000000A0000-0x000000000010C000-memory.dmp
    Filesize

    432KB

  • memory/2656-13-0x0000000000970000-0x0000000000A1C000-memory.dmp
    Filesize

    688KB

  • memory/2752-33-0x0000000000DE0000-0x0000000000DF6000-memory.dmp
    Filesize

    88KB

  • memory/2812-43-0x0000000000390000-0x00000000003AA000-memory.dmp
    Filesize

    104KB