Analysis

  • max time kernel
    1798s
  • max time network
    1800s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-09-2024 00:36

General

  • Target

    dsa.msi

  • Size

    1.6MB

  • MD5

    9775cb36162fab5d8dbe372cd5910ba7

  • SHA1

    a06d73422ecb931b6b6ae9f2af5f08f50b3d52dc

  • SHA256

    29549b75a198ad3aee4f8b9ea328bc9a73eb0e0d07e36775438bbe7268d453f9

  • SHA512

    42cc3d3746fc416097b7de340cf1782febe957ee45e17b5c368f6509bb5112cfdd808d223283ef424b5ee1aab0dddc78562a778f196f7962c3f27839f4f60564

  • SSDEEP

    49152:gfj3YhW8zBQSc0ZnSKSZKumZr7AlFBBdtM:cYY0ZnQK/AlprM

Malware Config

Signatures

  • Blocklisted process makes network request 64 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 12 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3480
    • C:\Windows\system32\msiexec.exe
      msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\dsa.msi
      2⤵
      • Enumerates connected drives
      • Event Triggered Execution: Installer Packages
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:2436
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\SysWOW64\rundll32.exe" C:\Users\Admin\AppData\Roaming\vierm_soft_x64.dll, GetDeepDVCState
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2164
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\SysWOW64\rundll32.exe" C:\Users\Admin\AppData\Roaming\vierm_soft_x64.dll, GetDeepDVCState
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:3580
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3000
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:540
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 8173E61F4EF1069FAFE2A72F26D78920
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2512
    • C:\Windows\Installer\MSICA89.tmp
      "C:\Windows\Installer\MSICA89.tmp" /DontWait C:/Windows/SysWOW64/rundll32.exe C:\Users\Admin\AppData\Roaming\vierm_soft_x64.dll, GetDeepDVCState
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4768
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:844

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Config.Msi\e57c6fc.rbs

    Filesize

    1KB

    MD5

    80989ccf091b84f9d0f7d31e1c264f26

    SHA1

    595a1963217f8145ff697c8ab02471f0a54c189c

    SHA256

    4e81011535bbc91b7ec30e3390312ba1f843ac0b6a777c4bbc8a7a7fef5c06e0

    SHA512

    6f08b4a2a5394e37ea2a8328937ba9966a68aa739307d1b70b309720e3d025635e05d2e34ff9c6288d77d4872f1a557f8a9fd92f24df4deb3a5de565e65a1c8e

  • C:\Users\Admin\AppData\Roaming\vierm_soft_x64.dll

    Filesize

    666KB

    MD5

    877c8b214d984656143d7576f832d935

    SHA1

    26bedae9e05afbff75ede2efc7777a376e362b6a

    SHA256

    28f5e949ecad3606c430cea5a34d0f3e7218f239bcfa758a834dceb649e78abc

    SHA512

    f07ac6795f4d8de38ac7f92a5ae308d2bdc30e29cebdf93b7fdee958c04bb83b1a28c4e6ac4e6a770b6d207af2a886cc93028b26e8850327f55391118f2d621a

  • C:\Windows\Installer\MSIC747.tmp

    Filesize

    436KB

    MD5

    475d20c0ea477a35660e3f67ecf0a1df

    SHA1

    67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

    SHA256

    426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

    SHA512

    99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

  • C:\Windows\Installer\MSICA89.tmp

    Filesize

    389KB

    MD5

    b9545ed17695a32face8c3408a6a3553

    SHA1

    f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

    SHA256

    1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

    SHA512

    f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

  • \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2

    Filesize

    23.7MB

    MD5

    ec45839a4696527a3fc9142a8587b806

    SHA1

    4d21c85ebafec3b2dbc88641d8adcbb058f5742f

    SHA256

    07214eb2d410af50090ac81ba2dc209da11a1ab9e6a306ca2d46c2da82fdd04c

    SHA512

    73d4bb0c8d5dcb8b57d0522af5d835dfa38390e2b02bbb3ee687be574e15c1a8e145247bd7de548aae85098769d56094088897ce8cb4944c491b7a9808b6191c

  • \??\Volume{848480a2-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{0be47e68-66af-4185-86e2-6bb6feba2bcf}_OnDiskSnapshotProp

    Filesize

    6KB

    MD5

    d7856f2af37cdd04a868ee823f6bd407

    SHA1

    f286e7b2bffec7ff12e988663b1e3b752cf78bab

    SHA256

    c8cc884dcd7c2981ca2b45efb40279c1c446b7cea3fd3836ac34c8084efd6767

    SHA512

    77759dfc271b2161fdfa271b0691b6685342bce672376f1f272f3c3d7fc0cf9402d86e74c3041b9eb3533de4de0433c173ecfcc62fe2d8ae277bc4a52bed0c5e

  • memory/3580-49-0x00007FF804D80000-0x00007FF804E3E000-memory.dmp

    Filesize

    760KB

  • memory/3580-51-0x00007FF803C90000-0x00007FF803F59000-memory.dmp

    Filesize

    2.8MB

  • memory/3580-47-0x00007FF8062F0000-0x00007FF8064E5000-memory.dmp

    Filesize

    2.0MB

  • memory/3580-62-0x0000000273F40000-0x0000000273F8A000-memory.dmp

    Filesize

    296KB

  • memory/3580-69-0x00000214A6880000-0x00000214A68CC000-memory.dmp

    Filesize

    304KB

  • memory/3580-53-0x00000214A6880000-0x00000214A68CC000-memory.dmp

    Filesize

    304KB

  • memory/3580-45-0x0000000273F40000-0x0000000273F8A000-memory.dmp

    Filesize

    296KB

  • memory/3580-46-0x0000000273F40000-0x0000000273F8A000-memory.dmp

    Filesize

    296KB