Analysis

  • max time kernel
    150s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-11-2024 09:05

General

  • Target

    29549b75a198ad3aee4f8b9ea328bc9a73eb0e0d07e36775438bbe7268d453f9.msi

  • Size

    1.6MB

  • MD5

    9775cb36162fab5d8dbe372cd5910ba7

  • SHA1

    a06d73422ecb931b6b6ae9f2af5f08f50b3d52dc

  • SHA256

    29549b75a198ad3aee4f8b9ea328bc9a73eb0e0d07e36775438bbe7268d453f9

  • SHA512

    42cc3d3746fc416097b7de340cf1782febe957ee45e17b5c368f6509bb5112cfdd808d223283ef424b5ee1aab0dddc78562a778f196f7962c3f27839f4f60564

  • SSDEEP

    49152:gfj3YhW8zBQSc0ZnSKSZKumZr7AlFBBdtM:cYY0ZnQK/AlprM

Malware Config

Signatures

  • Brute Ratel C4

    A customized command and control framework for red teaming and adversary simulation.

  • Bruteratel family
  • Detect BruteRatel badger 3 IoCs
  • Blocklisted process makes network request 46 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 36 IoCs
  • Suspicious use of AdjustPrivilegeToken 63 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\29549b75a198ad3aee4f8b9ea328bc9a73eb0e0d07e36775438bbe7268d453f9.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2340
  • 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:4928
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4708
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding DF686325A6944C0C60819D6BBBAF3C13
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:5088
    • C:\Windows\Installer\MSIE5B2.tmp
      "C:\Windows\Installer\MSIE5B2.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:4228
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:4936
  • C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\SysWOW64\rundll32.exe" C:\Users\Admin\AppData\Roaming\vierm_soft_x64.dll, GetDeepDVCState
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2856
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\SysWOW64\rundll32.exe" C:\Users\Admin\AppData\Roaming\vierm_soft_x64.dll, GetDeepDVCState
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:4852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Config.Msi\e57e0fd.rbs

    Filesize

    1KB

    MD5

    9cb5b66d303c73f306363ab3d5a1b2c7

    SHA1

    5e581743ecef4151b03797aecd3441b4d60bd937

    SHA256

    c2302543658b50fb86ecf1b7346b6ea54871662038ab6095ad53b579ac284765

    SHA512

    b7fdbb75c3496e950959e34d2f68bc53bd5b2baa8a929928bb277eb59c2e213c409e52e985791a12c17d2f231cd7b79fd7ea51c5c98c1bc22ae86f3b2f5c33df

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

    Filesize

    666KB

    MD5

    877c8b214d984656143d7576f832d935

    SHA1

    26bedae9e05afbff75ede2efc7777a376e362b6a

    SHA256

    28f5e949ecad3606c430cea5a34d0f3e7218f239bcfa758a834dceb649e78abc

    SHA512

    f07ac6795f4d8de38ac7f92a5ae308d2bdc30e29cebdf93b7fdee958c04bb83b1a28c4e6ac4e6a770b6d207af2a886cc93028b26e8850327f55391118f2d621a

  • C:\Windows\Installer\MSIE186.tmp

    Filesize

    436KB

    MD5

    475d20c0ea477a35660e3f67ecf0a1df

    SHA1

    67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

    SHA256

    426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

    SHA512

    99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

  • C:\Windows\Installer\MSIE5B2.tmp

    Filesize

    389KB

    MD5

    b9545ed17695a32face8c3408a6a3553

    SHA1

    f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

    SHA256

    1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

    SHA512

    f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

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

    Filesize

    24.1MB

    MD5

    5eaad60790819b03578d13547b700b41

    SHA1

    46d35877aa2cd2f3e6405cdbf4d3988d2cad8e87

    SHA256

    2ef6126cabf217d04655db0eb1530dee55e143d92ee618013ef8644b22d8a4ca

    SHA512

    cb78ec93e2b7f883851f6e0bf5eee93c2a057c5ce4fb8b6c1fc9474b8ecd4172e1bb33d8a093ad8a7fa545fa3731191fbeac1a1b61443598fe326a8ae7cd69a9

  • \??\Volume{0576a638-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{1bb4eb54-40f6-406c-a3dd-1184464aff14}_OnDiskSnapshotProp

    Filesize

    6KB

    MD5

    0366b03d50109f75af0b25f81889d0af

    SHA1

    503fd03c39abcadddc9b7679aef86a981f5c28f2

    SHA256

    f0b685c75c2582afd2007856ec3e9e36c5af60b755606dc3697266ccc016de13

    SHA512

    38168474f341a8c3701df152044ea3e617013e7c7dbd32a163edb463405f5be0c32f20cb9ea8c867d60b56561d3f18320f026b2cb6c182608f33139df22b3e9a

  • memory/4852-49-0x00007FF9FF090000-0x00007FF9FF14E000-memory.dmp

    Filesize

    760KB

  • memory/4852-51-0x00007FF9FE510000-0x00007FF9FE7D9000-memory.dmp

    Filesize

    2.8MB

  • memory/4852-53-0x000001876E010000-0x000001876E05C000-memory.dmp

    Filesize

    304KB

  • memory/4852-47-0x00007FFA00DF0000-0x00007FFA00FE5000-memory.dmp

    Filesize

    2.0MB

  • memory/4852-62-0x0000000273F40000-0x0000000273F8A000-memory.dmp

    Filesize

    296KB

  • memory/4852-63-0x000001876E010000-0x000001876E05C000-memory.dmp

    Filesize

    304KB

  • memory/4852-46-0x0000000273F40000-0x0000000273F8A000-memory.dmp

    Filesize

    296KB

  • memory/4852-45-0x0000000273F40000-0x0000000273F8A000-memory.dmp

    Filesize

    296KB