Analysis
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max time kernel
774s -
max time network
1158s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
submitted
13-09-2024 11:18
Static task
static1
Behavioral task
behavioral1
Sample
vfs.msi
Resource
win10v2004-20240802-en
Behavioral task
behavioral2
Sample
vfs.msi
Resource
win11-20240802-en
General
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Target
vfs.msi
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Size
1.9MB
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MD5
c017277279dada1b9653bc6838019952
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SHA1
4d66580dade368ea823c2afc602ad3686c20d4d1
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SHA256
f60c7e2cd7078584e1fb2eacd6270c314f1e23f76a4cd78c5d13eec215f0e41c
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SHA512
cd9fea4bfa73987fb95e4e15ee6fa5c489842b79f8a497ea7dd65ec355db9df6d4af786612e6d9f43e7293723a91841465368728fb1b5361716a9297008adfa2
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SSDEEP
49152:QGN3YhW8zBQSc0ZnSKBZKumZr7ANpTdzZfVSlaMBOno:3YY0Zn3K/ANPzbSlaBno
Malware Config
Extracted
latrodectus
https://isomicrotich.com/test/
https://rilomenifis.com/test/
Signatures
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Detects Latrodectus 4 IoCs
Detects Latrodectus v1.4.
resource yara_rule behavioral1/memory/4240-44-0x0000023D3AC60000-0x0000023D3AC76000-memory.dmp family_latrodectus_1_4 behavioral1/memory/4240-45-0x0000023D3AC60000-0x0000023D3AC76000-memory.dmp family_latrodectus_1_4 behavioral1/memory/2440-51-0x000002AC272D0000-0x000002AC272E6000-memory.dmp family_latrodectus_1_4 behavioral1/memory/2440-50-0x000002AC272D0000-0x000002AC272E6000-memory.dmp family_latrodectus_1_4 -
Latrodectus family
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Latrodectus loader
Latrodectus is a loader written in C++.
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Blocklisted process makes network request 4 IoCs
flow pid Process 52 2440 rundll32.exe 54 2440 rundll32.exe 63 2440 rundll32.exe 64 2440 rundll32.exe -
Enumerates connected drives 3 TTPs 46 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\M: msiexec.exe -
Drops file in Windows directory 12 IoCs
description ioc Process File opened for modification C:\Windows\Installer\MSIA944.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSIAA10.tmp msiexec.exe File created C:\Windows\Installer\e57a681.msi msiexec.exe File opened for modification C:\Windows\Installer\MSIA859.tmp msiexec.exe File created C:\Windows\Installer\inprogressinstallinfo.ipi msiexec.exe File opened for modification C:\Windows\Installer\MSIA7F9.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSIA838.tmp msiexec.exe File opened for modification C:\Windows\Installer\ msiexec.exe File created C:\Windows\Installer\SourceHash{72A77E3B-B705-4CCF-8F7A-0CB540D0E61A} msiexec.exe File opened for modification C:\Windows\Installer\e57a681.msi msiexec.exe File opened for modification C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log msiexec.exe File opened for modification C:\Windows\Installer\MSIA6B0.tmp msiexec.exe -
Executes dropped EXE 1 IoCs
pid Process 4320 MSIAA10.tmp -
Loads dropped DLL 6 IoCs
pid Process 3396 MsiExec.exe 3396 MsiExec.exe 3396 MsiExec.exe 3396 MsiExec.exe 4240 rundll32.exe 2440 rundll32.exe -
Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
pid Process 3428 msiexec.exe -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MsiExec.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MSIAA10.tmp -
Checks SCSI registry key(s) 3 TTPs 5 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters vssvc.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr vssvc.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\PartitionTableCache = 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 vssvc.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\SnapshotDataCache = 534e41505041525401000000700000008ec7416a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 vssvc.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4944 msiexec.exe 4944 msiexec.exe -
Suspicious use of AdjustPrivilegeToken 63 IoCs
description pid Process Token: SeShutdownPrivilege 3428 msiexec.exe Token: SeIncreaseQuotaPrivilege 3428 msiexec.exe Token: SeSecurityPrivilege 4944 msiexec.exe Token: SeCreateTokenPrivilege 3428 msiexec.exe Token: SeAssignPrimaryTokenPrivilege 3428 msiexec.exe Token: SeLockMemoryPrivilege 3428 msiexec.exe Token: SeIncreaseQuotaPrivilege 3428 msiexec.exe Token: SeMachineAccountPrivilege 3428 msiexec.exe Token: SeTcbPrivilege 3428 msiexec.exe Token: SeSecurityPrivilege 3428 msiexec.exe Token: SeTakeOwnershipPrivilege 3428 msiexec.exe Token: SeLoadDriverPrivilege 3428 msiexec.exe Token: SeSystemProfilePrivilege 3428 msiexec.exe Token: SeSystemtimePrivilege 3428 msiexec.exe Token: SeProfSingleProcessPrivilege 3428 msiexec.exe Token: SeIncBasePriorityPrivilege 3428 msiexec.exe Token: SeCreatePagefilePrivilege 3428 msiexec.exe Token: SeCreatePermanentPrivilege 3428 msiexec.exe Token: SeBackupPrivilege 3428 msiexec.exe Token: SeRestorePrivilege 3428 msiexec.exe Token: SeShutdownPrivilege 3428 msiexec.exe Token: SeDebugPrivilege 3428 msiexec.exe Token: SeAuditPrivilege 3428 msiexec.exe Token: SeSystemEnvironmentPrivilege 3428 msiexec.exe Token: SeChangeNotifyPrivilege 3428 msiexec.exe Token: SeRemoteShutdownPrivilege 3428 msiexec.exe Token: SeUndockPrivilege 3428 msiexec.exe Token: SeSyncAgentPrivilege 3428 msiexec.exe Token: SeEnableDelegationPrivilege 3428 msiexec.exe Token: SeManageVolumePrivilege 3428 msiexec.exe Token: SeImpersonatePrivilege 3428 msiexec.exe Token: SeCreateGlobalPrivilege 3428 msiexec.exe Token: SeBackupPrivilege 1268 vssvc.exe Token: SeRestorePrivilege 1268 vssvc.exe Token: SeAuditPrivilege 1268 vssvc.exe Token: SeBackupPrivilege 4944 msiexec.exe Token: SeRestorePrivilege 4944 msiexec.exe Token: SeRestorePrivilege 4944 msiexec.exe Token: SeTakeOwnershipPrivilege 4944 msiexec.exe Token: SeRestorePrivilege 4944 msiexec.exe Token: SeTakeOwnershipPrivilege 4944 msiexec.exe Token: SeRestorePrivilege 4944 msiexec.exe Token: SeTakeOwnershipPrivilege 4944 msiexec.exe Token: SeRestorePrivilege 4944 msiexec.exe Token: SeTakeOwnershipPrivilege 4944 msiexec.exe Token: SeRestorePrivilege 4944 msiexec.exe Token: SeTakeOwnershipPrivilege 4944 msiexec.exe Token: SeRestorePrivilege 4944 msiexec.exe Token: SeTakeOwnershipPrivilege 4944 msiexec.exe Token: SeRestorePrivilege 4944 msiexec.exe Token: SeTakeOwnershipPrivilege 4944 msiexec.exe Token: SeRestorePrivilege 4944 msiexec.exe Token: SeTakeOwnershipPrivilege 4944 msiexec.exe Token: SeRestorePrivilege 4944 msiexec.exe Token: SeTakeOwnershipPrivilege 4944 msiexec.exe Token: SeBackupPrivilege 3160 srtasks.exe Token: SeRestorePrivilege 3160 srtasks.exe Token: SeSecurityPrivilege 3160 srtasks.exe Token: SeTakeOwnershipPrivilege 3160 srtasks.exe Token: SeBackupPrivilege 3160 srtasks.exe Token: SeRestorePrivilege 3160 srtasks.exe Token: SeSecurityPrivilege 3160 srtasks.exe Token: SeTakeOwnershipPrivilege 3160 srtasks.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 3428 msiexec.exe 3428 msiexec.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 4944 wrote to memory of 3160 4944 msiexec.exe 97 PID 4944 wrote to memory of 3160 4944 msiexec.exe 97 PID 4944 wrote to memory of 3396 4944 msiexec.exe 99 PID 4944 wrote to memory of 3396 4944 msiexec.exe 99 PID 4944 wrote to memory of 3396 4944 msiexec.exe 99 PID 4944 wrote to memory of 4320 4944 msiexec.exe 101 PID 4944 wrote to memory of 4320 4944 msiexec.exe 101 PID 4944 wrote to memory of 4320 4944 msiexec.exe 101 PID 4240 wrote to memory of 2440 4240 rundll32.exe 104 PID 4240 wrote to memory of 2440 4240 rundll32.exe 104 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Windows\system32\msiexec.exemsiexec.exe /I C:\Users\Admin\AppData\Local\Temp\vfs.msi1⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:3428
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C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4944 -
C:\Windows\system32\srtasks.exeC:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:22⤵
- Suspicious use of AdjustPrivilegeToken
PID:3160
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C:\Windows\syswow64\MsiExec.exeC:\Windows\syswow64\MsiExec.exe -Embedding 25FBE7EE21EEC2F219617C51865FB42A2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:3396
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C:\Windows\Installer\MSIAA10.tmp"C:\Windows\Installer\MSIAA10.tmp" /DontWait C:/Windows/System32/rundll32.exe C:\Users\Admin\AppData\Roaming\true.dll, NvPluginGetInfo2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4320
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
PID:1268
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C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\true.dll, NvPluginGetInfo1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4240 -
C:\Windows\System32\rundll32.exerundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_893835d6.dll", NvPluginGetInfo2⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:2440
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD5bd7ebfa5c2e74ae1f056596685926789
SHA193937bb94a8141f108832b448a2233257e8a69c5
SHA2563ef224d21559a38b665e52c5489d76aed6b74b9fa53a0de0d096a54c57c60a1a
SHA51272d7cbbd03bb6f1292c3dc8385f3d4fb4be3dee680c459de79fc6bea1a4c3e850b497ad00932a8e4ef7bc7c93324dc645dba0c1cf785bccd439b496b5550abcf
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Filesize
1.8MB
MD56dc0d350d735fd1acc8219cfa5d02b9b
SHA17ba0708a4404715fb21a23acfbd88a25b7245ef1
SHA2562333dd858fc40899a1bff3fb39fbc0b4e65a864bfd4eb73c26b48aaddcca7061
SHA51299c9b6310363ce3a7d9ff680c4a0ae976553fc4789b12f9b60d9f629608d90cf4d64b4c8a037264f8aaa48fba69ae397236ef4c32c2eb6779fb5d9e0b3b0d52f
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Filesize
436KB
MD5475d20c0ea477a35660e3f67ecf0a1df
SHA167340739f51e1134ae8f0ffc5ae9dd710e8e3a08
SHA256426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd
SHA51299525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e
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Filesize
389KB
MD5b9545ed17695a32face8c3408a6a3553
SHA1f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83
SHA2561e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a
SHA512f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04
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Filesize
23.7MB
MD59ec9fb6fa1c8d721e1387bdeb1785089
SHA160f5a91861516a73a2440437ca3b532261f842f4
SHA25623c6f3dba504e9d7a6848b0a569d6e96a61533f7fd7e66e801b5026fa587b928
SHA512d7080ac96e1bbfdda5d6c9d4c3c164f5fc0ad8fe6d7c5435bc312f8561bc41ede7815f811e73d8a5a8efb3fdb2dd3055088415236111dadf29ccf780838c1d23
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\??\Volume{f171a6e7-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{5625dcc3-6b93-48b7-ba0d-f5061cbca075}_OnDiskSnapshotProp
Filesize6KB
MD59872f3779cb43e7a5cbef4ce2ebefc13
SHA1719cdd6514dad567d4f500ca5999b8ba0e7d8b67
SHA256b87a0f4db9ff2a4e045ad87719a0718128af71ec922b076a87223412bfd00566
SHA512b561357b9ef80d0ca8f57ff8cd6b2775fba98ed02e325673e754ebeb9478891e9b967e6d10f5f34337cf4efac8efd9526bbd2d9123068aadf32733e21d151d13