Analysis

  • max time kernel
    1799s
  • max time network
    1800s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    20-09-2024 18:41

General

  • Target

    DLPAgent.msi

  • Size

    2.1MB

  • MD5

    d75db138a6519ace7795ba35ea62a498

  • SHA1

    dc8ec40f846dd55be5661d43a80acb4d442f6cd3

  • SHA256

    1b9e17bfbd292075956cc2006983f91e17aed94ebbb0fb370bf83d23b14289fa

  • SHA512

    eeef3b0620cfbd332110b8123e2548b8b6a6b4d2259932463755aae2569440a8807eed7a5b5274b9bb01cde7604bc7aeb560b606609d7fc885cd97621c9106c1

  • SSDEEP

    49152:56s3YhW8zBQSc0ZnSKSZKumZr7AKMLQanYBQDpridgYaU:HYY0ZnQK/AvL8BpgPU

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 16 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 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 63 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 8 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\DLPAgent.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1344
  • 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:1100
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4380
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 5BD10D860F5B53B663EC673694507500
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:696
    • C:\Windows\Installer\MSI8840.tmp
      "C:\Windows\Installer\MSI8840.tmp" /DontWait C:/Windows/System32/rundll32.exe C:\Users\Admin\AppData\Roaming\x64_stealth.dll, clBuildProgram
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3332
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:4376
  • C:\Windows\System32\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\x64_stealth.dll, clBuildProgram
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    PID:3064

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Config.Msi\e5784e2.rbs

    Filesize

    1KB

    MD5

    4f6833fcc66ecade16a4594f4163e4aa

    SHA1

    1ed4565c88d4e90399b1b1f4f1108c9e7adbeaa7

    SHA256

    386f21286f38b1eddc17027d0650908ee2ed4c15e8353bfe4233f3d330e41acf

    SHA512

    c35e2b130bd641533c684f4405aa12cfe35994dd0c7f864dc9523679fa7f2cc32db87d45cbd8c59ae1bab05096e566e36ea99570ac638529f364af7b87b00f4e

  • C:\Users\Admin\AppData\Roaming\x64_stealth.dll

    Filesize

    1.7MB

    MD5

    4d343ce28a572f1bca64473232a039a9

    SHA1

    aaf14040d4ee2a03d48d961f7d70970d4513237f

    SHA256

    5c7a3bd2baa8303354d8098b8d5961f111e467002bb0c6fee120825b32798228

    SHA512

    bd723a89aef1778fff3af72459b59aa2316cb010b290e9d5679c8e72959db70086d65ee0ef16e8cb45349be04b3ae9daeb53b63defbebfac8452a97ce46da814

  • C:\Windows\Installer\MSI852E.tmp

    Filesize

    436KB

    MD5

    475d20c0ea477a35660e3f67ecf0a1df

    SHA1

    67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

    SHA256

    426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

    SHA512

    99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

  • C:\Windows\Installer\MSI8840.tmp

    Filesize

    389KB

    MD5

    b9545ed17695a32face8c3408a6a3553

    SHA1

    f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

    SHA256

    1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

    SHA512

    f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

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

    Filesize

    12.8MB

    MD5

    cbf3a467fedc9352d1f3d8aeb2b639fa

    SHA1

    7b1e2674c974e5682d2f570ef8e1ca454d268eb4

    SHA256

    cfd1046655c9262af072d441b5440e7eee4c8a9453600f188fe0c5a9b7eec13d

    SHA512

    92dbba9ece32270a45ffd88b805c96fc83ed4d7fef787e8a3243783abff1890714ebc96becdb2047e70eb2a1e12a01085d64583278eb8a0ef8ff72fc829898d5

  • \??\Volume{3a4c38fd-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{63bac0db-e474-4f23-a037-aed101e71683}_OnDiskSnapshotProp

    Filesize

    6KB

    MD5

    bcec90dc38253f373db85ed47fe81a98

    SHA1

    65a99fddb492f2e5ad2dd37108dd9b7d3f0b9e70

    SHA256

    b31c74cbd854716d093aee4a2e02014c7930f12ffad948a105f474c5b9bb4051

    SHA512

    9f6b5e9a0c72bee8560ec65b21b49a493a0b39215304b398524ea223ad665f61c1b4254a6723a4831858aad8fbd88d2fd9d98af40945fd58288edf0cb77b96aa

  • memory/3064-48-0x00007FFA939B0000-0x00007FFA93A6D000-memory.dmp

    Filesize

    756KB

  • memory/3064-47-0x00007FFA94EE0000-0x00007FFA950E9000-memory.dmp

    Filesize

    2.0MB

  • memory/3064-52-0x0000012C27B90000-0x0000012C27BDC000-memory.dmp

    Filesize

    304KB

  • memory/3064-50-0x00007FFA92680000-0x00007FFA929F4000-memory.dmp

    Filesize

    3.5MB

  • memory/3064-61-0x00000002E4D10000-0x00000002E4D5B000-memory.dmp

    Filesize

    300KB

  • memory/3064-70-0x0000012C27B90000-0x0000012C27BDC000-memory.dmp

    Filesize

    304KB

  • memory/3064-44-0x00000002E4D10000-0x00000002E4D5B000-memory.dmp

    Filesize

    300KB

  • memory/3064-45-0x00000002E4D10000-0x00000002E4D5B000-memory.dmp

    Filesize

    300KB