Analysis

  • max time kernel
    300s
  • max time network
    300s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    14-11-2024 01:01

General

  • Target

    14112024_0101_lavi.msi

  • Size

    2.0MB

  • MD5

    c65899e2519f4ad21fb4b97f0a113362

  • SHA1

    a1f854c29a69c19949499fca5e24b02b97be46fd

  • SHA256

    025abbec1724b9180b369fe116da9d90ae47a4996f6a4e28e8a947bac1e0c741

  • SHA512

    eca93cb24187735ec54d4b4e99675f87f1957e255f59c5432498bbc2c47c77b6ccfdf48861a2f78eb377307ce8f6e6458eaf4b766b96e6c2faea1fb87e3dcbb4

  • SSDEEP

    49152:/c53YhW8zBQSc0ZnSKBZKumZr7Aej3YOXT7wYyr8lCV:QYY0Zn3K/Ai33XXZ0

Malware Config

Extracted

Family

latrodectus

C2

https://rolefenik.com/test/

https://ergiholim.com/test/

Signatures

  • Detects Latrodectus 3 IoCs

    Detects Latrodectus v1.4.

  • Latrodectus family
  • Latrodectus loader

    Latrodectus is a loader written in C++.

  • Blocklisted process makes network request 8 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 13 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 11 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.

  • Modifies data under HKEY_USERS 43 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 19 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⤵
      PID:1236
      • C:\Windows\system32\msiexec.exe
        msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\14112024_0101_lavi.msi
        2⤵
        • Enumerates connected drives
        • Event Triggered Execution: Installer Packages
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        PID:1448
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\SysWOW64\rundll32.exe" C:\Users\Admin\AppData\Roaming\apptext.dll, Object
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:588
        • C:\Windows\system32\rundll32.exe
          "C:\Windows\SysWOW64\rundll32.exe" C:\Users\Admin\AppData\Roaming\apptext.dll, Object
          3⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1096
    • 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:2860
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A5854D7D0024D4D01218495674B6D0A0
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2508
      • C:\Windows\Installer\MSI2BC7.tmp
        "C:\Windows\Installer\MSI2BC7.tmp" /DontWait C:/Windows/SysWOW64/rundll32.exe C:\Users\Admin\AppData\Roaming\apptext.dll, Object
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1040
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1508
    • C:\Windows\system32\DrvInst.exe
      DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "0000000000000540" "000000000000038C"
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious use of AdjustPrivilegeToken
      PID:2364

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Config.Msi\f772927.rbs

      Filesize

      1KB

      MD5

      1f49aacfe209c7aa8f22ce586cd2a337

      SHA1

      5ba5dd6f1ee5933814e78235d015948f71a3e142

      SHA256

      a54f1a6689125bcdfcead0ac5ae072f394a2e29dfae0a0537f4b403db37f5e6c

      SHA512

      9701bb584d32417181b7e6923fd0eb7aec1e0913f988167e88b53593cff6885b3e52528aca815b2b1790a773914a9fa261c1a268eb16db69303f99d4732d185f

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

      Filesize

      1.6MB

      MD5

      86b57c9deafed093d4b47b03823b4d14

      SHA1

      47947da463dd6f4ecf61ae960235a35144e903a8

      SHA256

      f8e3eef1fda5969a7aabcc8fb5cc9f5fe245bbf6cc8e480459977b8e91eab9bd

      SHA512

      5f855ed0a3ecf561c45608d7f4579d6e4b1f1953863e97e0b5fea1f33b38d0e03fef16207d88864d2d936a4e65b677cd259ec248dbf06447b50f9e0488acead3

    • C:\Windows\Installer\MSI2961.tmp

      Filesize

      436KB

      MD5

      475d20c0ea477a35660e3f67ecf0a1df

      SHA1

      67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

      SHA256

      426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

      SHA512

      99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

    • C:\Windows\Installer\MSI2BC7.tmp

      Filesize

      389KB

      MD5

      b9545ed17695a32face8c3408a6a3553

      SHA1

      f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

      SHA256

      1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

      SHA512

      f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

    • memory/1040-36-0x0000000000120000-0x0000000000122000-memory.dmp

      Filesize

      8KB

    • memory/1096-88-0x000007FFFFF50000-0x000007FFFFF51000-memory.dmp

      Filesize

      4KB

    • memory/1096-89-0x000007FFFFF40000-0x000007FFFFF41000-memory.dmp

      Filesize

      4KB

    • memory/1096-57-0x0000000000390000-0x00000000003DC000-memory.dmp

      Filesize

      304KB

    • memory/1096-87-0x000007FFFFF60000-0x000007FFFFF61000-memory.dmp

      Filesize

      4KB

    • memory/1096-86-0x000007FFFFF70000-0x000007FFFFF71000-memory.dmp

      Filesize

      4KB

    • memory/1096-85-0x000007FFFFF80000-0x000007FFFFF95000-memory.dmp

      Filesize

      84KB

    • memory/1096-84-0x000007FFFFFA0000-0x000007FFFFFA1000-memory.dmp

      Filesize

      4KB

    • memory/1096-99-0x0000000000390000-0x00000000003DC000-memory.dmp

      Filesize

      304KB

    • memory/1096-48-0x0000000000390000-0x00000000003DC000-memory.dmp

      Filesize

      304KB

    • memory/1236-92-0x0000000002E50000-0x0000000002E65000-memory.dmp

      Filesize

      84KB

    • memory/1236-90-0x0000000002E50000-0x0000000002E65000-memory.dmp

      Filesize

      84KB

    • memory/1236-93-0x0000000002E50000-0x0000000002E65000-memory.dmp

      Filesize

      84KB