Analysis

  • max time kernel
    136s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-01-2024 02:00

General

  • Target

    payment receipts.exe

  • Size

    986KB

  • MD5

    cdcfa8aab8a4766ddb88df4635104d83

  • SHA1

    7ad43cc7224f694995e53325a581e659eabe2e16

  • SHA256

    0414ef0adb12bfe054d85f9196cee419bee6a7692187d83239bd5f8ee867c4c8

  • SHA512

    9948e0571bfd8a167ad456a7aa4380b7f73f0bc77475b827bb20303a5fe1bce03670900e275cec573c88df51cd42a2060012bba623c7358640af8e1209210acb

  • SSDEEP

    24576:FJRsQJVHvu3/mAUf45P3z55KTBmfswlibk:bWgHv0wq50TAfpEk

Score
10/10

Malware Config

Extracted

Family

darkcloud

Attributes

Signatures

  • DarkCloud

    An information stealer written in Visual Basic.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\payment receipts.exe
    "C:\Users\Admin\AppData\Local\Temp\payment receipts.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4120
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\payment receipts.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:860
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UbaskbOLQNa" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAF0C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3744
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UbaskbOLQNa.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3464
    • C:\Users\Admin\AppData\Local\Temp\payment receipts.exe
      "C:\Users\Admin\AppData\Local\Temp\payment receipts.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:4320

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

    Filesize

    18KB

    MD5

    02589664e9c19fc3464143eb02ee6c74

    SHA1

    db147ba9c9825c6da7e3734e279d58eed478784b

    SHA256

    8d331ffaa5305613125c0adf8e8480222f68dd52793c6ffed4f790f0dafb61e6

    SHA512

    bb299f4bb3aa8b09db1de5aba067dd910139df8ee89939c4772a25f2c35d2a08e27e00ec6b33a8477d0d880d25036cd57c926a9cb14c68d6323cca80ee3ba3ec

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1vh4tcbw.urp.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpAF0C.tmp

    Filesize

    1KB

    MD5

    d6df7fce9939282976ea58139ee301b5

    SHA1

    ad5b965058b319357def06f59aa779ff975d2a31

    SHA256

    430a1f95d93cf9fecf9c5357aebd8b3de32259802e575f1b12a84cdc8a83946f

    SHA512

    538de3a90b23222113d674e417bbd6ed19d696d9ca73df8efac4bb79f540f0fd2d2d071ae83285c806ec3c0f47066e061f7831f76c3a9555914e8331c7bb0276

  • memory/860-85-0x00000000073F0000-0x000000000740A000-memory.dmp

    Filesize

    104KB

  • memory/860-20-0x0000000004C80000-0x0000000004C90000-memory.dmp

    Filesize

    64KB

  • memory/860-90-0x0000000007630000-0x0000000007644000-memory.dmp

    Filesize

    80KB

  • memory/860-89-0x0000000007620000-0x000000000762E000-memory.dmp

    Filesize

    56KB

  • memory/860-57-0x0000000071720000-0x000000007176C000-memory.dmp

    Filesize

    304KB

  • memory/860-58-0x000000007F290000-0x000000007F2A0000-memory.dmp

    Filesize

    64KB

  • memory/860-88-0x00000000075F0000-0x0000000007601000-memory.dmp

    Filesize

    68KB

  • memory/860-80-0x0000000004C80000-0x0000000004C90000-memory.dmp

    Filesize

    64KB

  • memory/860-92-0x0000000007710000-0x0000000007718000-memory.dmp

    Filesize

    32KB

  • memory/860-19-0x0000000004C80000-0x0000000004C90000-memory.dmp

    Filesize

    64KB

  • memory/860-21-0x00000000052C0000-0x00000000058E8000-memory.dmp

    Filesize

    6.2MB

  • memory/860-91-0x0000000007730000-0x000000000774A000-memory.dmp

    Filesize

    104KB

  • memory/860-18-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/860-82-0x0000000004C80000-0x0000000004C90000-memory.dmp

    Filesize

    64KB

  • memory/860-26-0x0000000005010000-0x0000000005032000-memory.dmp

    Filesize

    136KB

  • memory/860-81-0x00000000070C0000-0x0000000007163000-memory.dmp

    Filesize

    652KB

  • memory/860-68-0x0000000007090000-0x00000000070AE000-memory.dmp

    Filesize

    120KB

  • memory/860-28-0x00000000051B0000-0x0000000005216000-memory.dmp

    Filesize

    408KB

  • memory/860-29-0x0000000005AA0000-0x0000000005B06000-memory.dmp

    Filesize

    408KB

  • memory/860-98-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/860-17-0x0000000004B10000-0x0000000004B46000-memory.dmp

    Filesize

    216KB

  • memory/860-51-0x0000000005B10000-0x0000000005E64000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-23-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/3464-86-0x00000000072D0000-0x00000000072DA000-memory.dmp

    Filesize

    40KB

  • memory/3464-99-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/3464-56-0x0000000006500000-0x0000000006532000-memory.dmp

    Filesize

    200KB

  • memory/3464-55-0x0000000005FE0000-0x000000000602C000-memory.dmp

    Filesize

    304KB

  • memory/3464-69-0x0000000071720000-0x000000007176C000-memory.dmp

    Filesize

    304KB

  • memory/3464-70-0x000000007F690000-0x000000007F6A0000-memory.dmp

    Filesize

    64KB

  • memory/3464-24-0x0000000004C10000-0x0000000004C20000-memory.dmp

    Filesize

    64KB

  • memory/3464-83-0x0000000004C10000-0x0000000004C20000-memory.dmp

    Filesize

    64KB

  • memory/3464-54-0x0000000005F30000-0x0000000005F4E000-memory.dmp

    Filesize

    120KB

  • memory/3464-87-0x00000000074E0000-0x0000000007576000-memory.dmp

    Filesize

    600KB

  • memory/3464-84-0x00000000078A0000-0x0000000007F1A000-memory.dmp

    Filesize

    6.5MB

  • memory/4120-10-0x0000000009AB0000-0x0000000009B52000-memory.dmp

    Filesize

    648KB

  • memory/4120-6-0x0000000007FE0000-0x000000000807C000-memory.dmp

    Filesize

    624KB

  • memory/4120-12-0x0000000003270000-0x0000000003280000-memory.dmp

    Filesize

    64KB

  • memory/4120-0-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/4120-2-0x0000000008360000-0x0000000008904000-memory.dmp

    Filesize

    5.6MB

  • memory/4120-9-0x0000000008340000-0x000000000834C000-memory.dmp

    Filesize

    48KB

  • memory/4120-8-0x0000000008330000-0x0000000008338000-memory.dmp

    Filesize

    32KB

  • memory/4120-32-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/4120-7-0x0000000008310000-0x0000000008328000-memory.dmp

    Filesize

    96KB

  • memory/4120-11-0x0000000074F30000-0x00000000756E0000-memory.dmp

    Filesize

    7.7MB

  • memory/4120-5-0x0000000005420000-0x000000000542A000-memory.dmp

    Filesize

    40KB

  • memory/4120-4-0x0000000003270000-0x0000000003280000-memory.dmp

    Filesize

    64KB

  • memory/4120-1-0x0000000000E40000-0x0000000000F3C000-memory.dmp

    Filesize

    1008KB

  • memory/4120-3-0x0000000007E50000-0x0000000007EE2000-memory.dmp

    Filesize

    584KB

  • memory/4320-31-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/4320-25-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/4320-100-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB