Resubmissions

20-11-2024 06:31

241120-hahknatdnl 10

19-11-2024 21:38

241119-1hfedatfnn 8

Analysis

  • max time kernel
    389s
  • max time network
    363s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    20-11-2024 06:31

General

  • Target

    merd.msi

  • Size

    2.0MB

  • MD5

    309abcad11b67d2498cf87c4e10ff30f

  • SHA1

    0d805a684b889846a7b00cecc0ee84c7cf93398d

  • SHA256

    c39abdca1a31b20fe06969a36102c784df7f63847ec930dfaf8c4bd97b4558bf

  • SHA512

    0f0c0f4a04ae65532a7f4c197ca22c371d904a5b3055e14bd537a3c092d8b4526a597564019395ed0b05d4ffbc6d9b450a8d267de3906f88ac2d320f9c75bdd9

  • SSDEEP

    49152:ecS3YhW8zBQSc0ZnSKBZKumZr7AQkojSo0kzI8ZVE6VPbe:sYY0Zn3K/AQz3Tbx56

Malware Config

Extracted

Family

latrodectus

C2

https://bestmarsgood.com/test/

https://cerwintifed.com/test/

Signatures

  • Detects Latrodectus 6 IoCs

    Detects Latrodectus v1.4.

  • Latrodectus family
  • Latrodectus loader

    Latrodectus is a loader written in C++.

  • Blocklisted process makes network request 12 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 20 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:3692
    • C:\Windows\system32\msiexec.exe
      msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\merd.msi
      2⤵
      • Enumerates connected drives
      • Event Triggered Execution: Installer Packages
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:2028
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\SysWOW64\rundll32.exe" C:\Users\Admin\AppData\Roaming\sqx.dll, GetDbInterface
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5068
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\SysWOW64\rundll32.exe" C:\Users\Admin\AppData\Roaming\sqx.dll, GetDbInterface
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4844
  • 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:216
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:4
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2676
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 7D6420FB5EBED4EFF16221BF26A37B2A
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1108
    • C:\Windows\Installer\MSIC122.tmp
      "C:\Windows\Installer\MSIC122.tmp" /DontWait C:/Windows/SysWOW64/rundll32.exe C:\Users\Admin\AppData\Roaming\sqx.dll, GetDbInterface
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4332
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:240

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Config.Msi\e57bccb.rbs

    Filesize

    1KB

    MD5

    1fd22be2640a1e3c515abead07569e88

    SHA1

    cdb3dcb981882f854d40ab627548c364a3187ae2

    SHA256

    b52623abc3e24479ba7c1acb663e3b59f4822d936a74dfd08fe8f922d3bb120d

    SHA512

    bafc979aa3fd1f0a38b8285ea373e465682b80f78d253c2595c13a3193f8b9f3e89d9a68384a28ce0e8d2b2777060fc92b26cf9e6c7c2f934d56a67fc2151332

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

    Filesize

    1.3MB

    MD5

    dd862590d9e4ea1791df147912ae4c8f

    SHA1

    852d7a9ea4db5ff4cd51a92447a8d5701cfb322b

    SHA256

    14ffcbbfb305287ea15264df3363567f36a26917ae2018af0f40e2009b8a7184

    SHA512

    3e9222d8bd91d3e53f5e378318a78a7c5aa12011272031f7c0d8c36c5b255db1d0a168cc02e1159eb021dd18206352dd6dcb857fefc2222937c467350dc6d568

  • C:\Windows\Installer\MSIBD26.tmp

    Filesize

    436KB

    MD5

    475d20c0ea477a35660e3f67ecf0a1df

    SHA1

    67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

    SHA256

    426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

    SHA512

    99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

  • C:\Windows\Installer\MSIC122.tmp

    Filesize

    389KB

    MD5

    b9545ed17695a32face8c3408a6a3553

    SHA1

    f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

    SHA256

    1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

    SHA512

    f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

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

    Filesize

    23.9MB

    MD5

    f0a04952f9732e6ee769be35985a63a9

    SHA1

    ba21c70fcf8d83d285da5176dde2451d3e94d326

    SHA256

    0bbc788ebc4b8165a9a9f56dc8266a816a117459bd046549d481dfab2b16fa79

    SHA512

    39a72e8b135341ad969d5c6e3ae790346b34fd4af8fdbb3354b27cf5c1f7c982538610c08cd507acfc4cf0a00e8c38c4517c6ce8117e62290e3c1c35aed73cff

  • \??\Volume{852b386b-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{d7dcfaef-2c42-4d1d-ab2a-a6e5c73717cc}_OnDiskSnapshotProp

    Filesize

    6KB

    MD5

    9a9f949457f14f16bf729c03fded813f

    SHA1

    461716cd6822b6cf00dd4f10609d518275ba1cc5

    SHA256

    f211945c951dadc291e9fb224a06c1b252f19986c9f03e0dacf376a302d5e7ba

    SHA512

    6a2115e7eab2752935a05e54fe5f09bf8496edfb01baaddf69441293c9b05fa6bc19fd75ec59a43913ccfe4417a7f962e61c90935f44dcfc116015f9a604a074

  • memory/3692-67-0x00000000013F0000-0x0000000001405000-memory.dmp

    Filesize

    84KB

  • memory/3692-66-0x00000000013F0000-0x0000000001405000-memory.dmp

    Filesize

    84KB

  • memory/4844-45-0x0000021315350000-0x000002131539C000-memory.dmp

    Filesize

    304KB

  • memory/4844-64-0x00007FF415230000-0x00007FF415231000-memory.dmp

    Filesize

    4KB

  • memory/4844-62-0x00007FF415250000-0x00007FF415251000-memory.dmp

    Filesize

    4KB

  • memory/4844-60-0x00007FF415280000-0x00007FF415281000-memory.dmp

    Filesize

    4KB

  • memory/4844-65-0x00007FF415220000-0x00007FF415221000-memory.dmp

    Filesize

    4KB

  • memory/4844-63-0x00007FF415240000-0x00007FF415241000-memory.dmp

    Filesize

    4KB

  • memory/4844-61-0x00007FF415260000-0x00007FF415275000-memory.dmp

    Filesize

    84KB

  • memory/4844-72-0x0000021315350000-0x000002131539C000-memory.dmp

    Filesize

    304KB