Analysis
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max time kernel
298s -
max time network
299s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
21-11-2024 00:27
Static task
static1
Behavioral task
behavioral1
Sample
21112024_0027_merd.msi
Resource
win7-20241023-en
windows7-x64
17 signatures
300 seconds
Behavioral task
behavioral2
Sample
21112024_0027_merd.msi
Resource
win10v2004-20241007-en
windows10-2004-x64
16 signatures
300 seconds
General
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Target
21112024_0027_merd.msi
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Size
2.0MB
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MD5
309abcad11b67d2498cf87c4e10ff30f
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SHA1
0d805a684b889846a7b00cecc0ee84c7cf93398d
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SHA256
c39abdca1a31b20fe06969a36102c784df7f63847ec930dfaf8c4bd97b4558bf
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SHA512
0f0c0f4a04ae65532a7f4c197ca22c371d904a5b3055e14bd537a3c092d8b4526a597564019395ed0b05d4ffbc6d9b450a8d267de3906f88ac2d320f9c75bdd9
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SSDEEP
49152:ecS3YhW8zBQSc0ZnSKBZKumZr7AQkojSo0kzI8ZVE6VPbe:sYY0Zn3K/AQz3Tbx56
Malware Config
Extracted
Family
latrodectus
C2
https://bestmarsgood.com/test/
https://cerwintifed.com/test/
Signatures
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Detects Latrodectus 3 IoCs
Detects Latrodectus v1.4.
resource yara_rule behavioral2/memory/3672-64-0x00007FF46C0A0000-0x00007FF46C0B5000-memory.dmp family_latrodectus_1_4 behavioral2/memory/3540-69-0x0000000000C60000-0x0000000000C75000-memory.dmp family_latrodectus_1_4 behavioral2/memory/3540-70-0x0000000000C60000-0x0000000000C75000-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 10 IoCs
flow pid Process 28 3672 rundll32.exe 30 3672 rundll32.exe 32 3672 rundll32.exe 37 3672 rundll32.exe 52 3672 rundll32.exe 61 3672 rundll32.exe 66 3672 rundll32.exe 67 3672 rundll32.exe 74 3672 rundll32.exe 75 3672 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) \??\N: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\Z: msiexec.exe -
Drops file in Windows directory 12 IoCs
description ioc Process File created C:\Windows\Installer\e57f6c4.msi msiexec.exe File opened for modification C:\Windows\Installer\e57f6c4.msi msiexec.exe File opened for modification C:\Windows\Installer\MSIF8D9.tmp msiexec.exe File opened for modification C:\Windows\Installer\ msiexec.exe File created C:\Windows\Installer\SourceHash{F51335B5-861E-4317-91B1-6EA78A6DECF1} 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\MSIF721.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSIF86B.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSIF928.tmp msiexec.exe File created C:\Windows\Installer\inprogressinstallinfo.ipi msiexec.exe File opened for modification C:\Windows\Installer\MSIF9A6.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSIFAEF.tmp msiexec.exe -
Executes dropped EXE 1 IoCs
pid Process 1672 MSIFAEF.tmp -
Loads dropped DLL 6 IoCs
pid Process 3076 MsiExec.exe 3076 MsiExec.exe 3076 MsiExec.exe 3076 MsiExec.exe 4332 rundll32.exe 3672 rundll32.exe -
Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
pid Process 1716 msiexec.exe -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MsiExec.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MSIFAEF.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 16 IoCs
pid Process 4864 msiexec.exe 4864 msiexec.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe 3672 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 1716 msiexec.exe Token: SeIncreaseQuotaPrivilege 1716 msiexec.exe Token: SeSecurityPrivilege 4864 msiexec.exe Token: SeCreateTokenPrivilege 1716 msiexec.exe Token: SeAssignPrimaryTokenPrivilege 1716 msiexec.exe Token: SeLockMemoryPrivilege 1716 msiexec.exe Token: SeIncreaseQuotaPrivilege 1716 msiexec.exe Token: SeMachineAccountPrivilege 1716 msiexec.exe Token: SeTcbPrivilege 1716 msiexec.exe Token: SeSecurityPrivilege 1716 msiexec.exe Token: SeTakeOwnershipPrivilege 1716 msiexec.exe Token: SeLoadDriverPrivilege 1716 msiexec.exe Token: SeSystemProfilePrivilege 1716 msiexec.exe Token: SeSystemtimePrivilege 1716 msiexec.exe Token: SeProfSingleProcessPrivilege 1716 msiexec.exe Token: SeIncBasePriorityPrivilege 1716 msiexec.exe Token: SeCreatePagefilePrivilege 1716 msiexec.exe Token: SeCreatePermanentPrivilege 1716 msiexec.exe Token: SeBackupPrivilege 1716 msiexec.exe Token: SeRestorePrivilege 1716 msiexec.exe Token: SeShutdownPrivilege 1716 msiexec.exe Token: SeDebugPrivilege 1716 msiexec.exe Token: SeAuditPrivilege 1716 msiexec.exe Token: SeSystemEnvironmentPrivilege 1716 msiexec.exe Token: SeChangeNotifyPrivilege 1716 msiexec.exe Token: SeRemoteShutdownPrivilege 1716 msiexec.exe Token: SeUndockPrivilege 1716 msiexec.exe Token: SeSyncAgentPrivilege 1716 msiexec.exe Token: SeEnableDelegationPrivilege 1716 msiexec.exe Token: SeManageVolumePrivilege 1716 msiexec.exe Token: SeImpersonatePrivilege 1716 msiexec.exe Token: SeCreateGlobalPrivilege 1716 msiexec.exe Token: SeBackupPrivilege 824 vssvc.exe Token: SeRestorePrivilege 824 vssvc.exe Token: SeAuditPrivilege 824 vssvc.exe Token: SeBackupPrivilege 4864 msiexec.exe Token: SeRestorePrivilege 4864 msiexec.exe Token: SeRestorePrivilege 4864 msiexec.exe Token: SeTakeOwnershipPrivilege 4864 msiexec.exe Token: SeRestorePrivilege 4864 msiexec.exe Token: SeTakeOwnershipPrivilege 4864 msiexec.exe Token: SeRestorePrivilege 4864 msiexec.exe Token: SeTakeOwnershipPrivilege 4864 msiexec.exe Token: SeRestorePrivilege 4864 msiexec.exe Token: SeTakeOwnershipPrivilege 4864 msiexec.exe Token: SeRestorePrivilege 4864 msiexec.exe Token: SeTakeOwnershipPrivilege 4864 msiexec.exe Token: SeRestorePrivilege 4864 msiexec.exe Token: SeTakeOwnershipPrivilege 4864 msiexec.exe Token: SeRestorePrivilege 4864 msiexec.exe Token: SeTakeOwnershipPrivilege 4864 msiexec.exe Token: SeRestorePrivilege 4864 msiexec.exe Token: SeTakeOwnershipPrivilege 4864 msiexec.exe Token: SeRestorePrivilege 4864 msiexec.exe Token: SeTakeOwnershipPrivilege 4864 msiexec.exe Token: SeBackupPrivilege 3620 srtasks.exe Token: SeRestorePrivilege 3620 srtasks.exe Token: SeSecurityPrivilege 3620 srtasks.exe Token: SeTakeOwnershipPrivilege 3620 srtasks.exe Token: SeBackupPrivilege 3620 srtasks.exe Token: SeRestorePrivilege 3620 srtasks.exe Token: SeSecurityPrivilege 3620 srtasks.exe Token: SeTakeOwnershipPrivilege 3620 srtasks.exe Token: SeShutdownPrivilege 3540 Explorer.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1716 msiexec.exe 1716 msiexec.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 4864 wrote to memory of 3620 4864 msiexec.exe 102 PID 4864 wrote to memory of 3620 4864 msiexec.exe 102 PID 4864 wrote to memory of 3076 4864 msiexec.exe 104 PID 4864 wrote to memory of 3076 4864 msiexec.exe 104 PID 4864 wrote to memory of 3076 4864 msiexec.exe 104 PID 4864 wrote to memory of 1672 4864 msiexec.exe 105 PID 4864 wrote to memory of 1672 4864 msiexec.exe 105 PID 4864 wrote to memory of 1672 4864 msiexec.exe 105 PID 4332 wrote to memory of 3672 4332 rundll32.exe 107 PID 4332 wrote to memory of 3672 4332 rundll32.exe 107 PID 3672 wrote to memory of 3540 3672 rundll32.exe 56 -
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\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3540 -
C:\Windows\system32\msiexec.exemsiexec.exe /I C:\Users\Admin\AppData\Local\Temp\21112024_0027_merd.msi2⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1716
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\SysWOW64\rundll32.exe" C:\Users\Admin\AppData\Roaming\sqx.dll, GetDbInterface2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4332 -
C:\Windows\system32\rundll32.exe"C:\Windows\SysWOW64\rundll32.exe" C:\Users\Admin\AppData\Roaming\sqx.dll, GetDbInterface3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3672
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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:4864 -
C:\Windows\system32\srtasks.exeC:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:22⤵
- Suspicious use of AdjustPrivilegeToken
PID:3620
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C:\Windows\syswow64\MsiExec.exeC:\Windows\syswow64\MsiExec.exe -Embedding A09DF58EF28EC0F739465092401413982⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:3076
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C:\Windows\Installer\MSIFAEF.tmp"C:\Windows\Installer\MSIFAEF.tmp" /DontWait C:/Windows/SysWOW64/rundll32.exe C:\Users\Admin\AppData\Roaming\sqx.dll, GetDbInterface2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1672
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
PID:824
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD594ded41161fdb143f3ddc68d73d8fa8a
SHA1f0a014e569bb707e1b01786946e1b07126d5b713
SHA256e0a196809544ff7544eb4b45c233fa0efc9ce43a76dc0b81b1c4e0a9342c2b35
SHA51297ae2dd91e2170b7276b061cdaa05517cd5abb5b80b05a4740e8cc8f99c6a98026895bd16ed2cdc868469fce2581f82a32e6c8e713734806d9f8b1b59d4ef7c4
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Filesize
1.3MB
MD5dd862590d9e4ea1791df147912ae4c8f
SHA1852d7a9ea4db5ff4cd51a92447a8d5701cfb322b
SHA25614ffcbbfb305287ea15264df3363567f36a26917ae2018af0f40e2009b8a7184
SHA5123e9222d8bd91d3e53f5e378318a78a7c5aa12011272031f7c0d8c36c5b255db1d0a168cc02e1159eb021dd18206352dd6dcb857fefc2222937c467350dc6d568
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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
24.1MB
MD58c9ddb7e1b779991d56a72943a9f0101
SHA1d63e5a76ae5107c0fa5edd388241f2fcdcf0a2c7
SHA256827830963f6a4b01ccbe98a1a2ea6be3949736db29e1d7e947ca3398366515b1
SHA5125e3d18563c3cdde65d4d1f266fe5ebcccf941553d9c37b90b34e358ec0b240e202b7c2484f24dfb2f5637dee787a02d14b6ba40af56132981079d57e98047a4e
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\??\Volume{612d9cf5-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{53497d61-6e87-4c23-bcb2-b9a9f57954fe}_OnDiskSnapshotProp
Filesize6KB
MD5cd62312c82f1993143245ed5b6431ac9
SHA117eef07a164fb81972fac25cea233b19804f3bf7
SHA256f63d142d7e629a4e3ae53aebe8da3346bd79c810308fa6d13e774ff360eee46c
SHA5123312b7d77817e2c702a13b1a49ae56ed09fd05e2de1fd0b72ce6816684ad296e8b1aa4bf2a3c5a77bdf6484e96c787f702d96dd0e1ff29a153ae3c35f846fc1b