Analysis
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max time kernel
397s -
max time network
399s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
20-11-2024 06:31
Static task
static1
Behavioral task
behavioral1
Sample
merd.msi
Resource
win10v2004-20241007-en
Behavioral task
behavioral2
Sample
merd.msi
Resource
win10ltsc2021-20241023-en
General
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Target
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
latrodectus
https://bestmarsgood.com/test/
https://cerwintifed.com/test/
Signatures
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Detects Latrodectus 6 IoCs
Detects Latrodectus v1.4.
Processes:
resource yara_rule behavioral1/memory/2272-61-0x00007FF4F59A0000-0x00007FF4F59B5000-memory.dmp family_latrodectus_1_4 behavioral1/memory/2272-61-0x00007FF4F59A0000-0x00007FF4F59B5000-memory.dmp Latrodectus14 behavioral1/memory/3380-66-0x0000000002A10000-0x0000000002A25000-memory.dmp family_latrodectus_1_4 behavioral1/memory/3380-66-0x0000000002A10000-0x0000000002A25000-memory.dmp Latrodectus14 behavioral1/memory/3380-67-0x0000000002A10000-0x0000000002A25000-memory.dmp family_latrodectus_1_4 behavioral1/memory/3380-67-0x0000000002A10000-0x0000000002A25000-memory.dmp Latrodectus14 -
Latrodectus family
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Latrodectus loader
Latrodectus is a loader written in C++.
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Blocklisted process makes network request 13 IoCs
Processes:
rundll32.exeflow pid process 30 2272 rundll32.exe 32 2272 rundll32.exe 34 2272 rundll32.exe 35 2272 rundll32.exe 54 2272 rundll32.exe 63 2272 rundll32.exe 65 2272 rundll32.exe 67 2272 rundll32.exe 68 2272 rundll32.exe 75 2272 rundll32.exe 76 2272 rundll32.exe 81 2272 rundll32.exe 82 2272 rundll32.exe -
Enumerates connected drives 3 TTPs 46 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
msiexec.exemsiexec.exedescription ioc process File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\I: msiexec.exe -
Drops file in Windows directory 12 IoCs
Processes:
msiexec.exedescription ioc process File opened for modification C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log msiexec.exe File opened for modification C:\Windows\Installer\MSICF66.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSID1E8.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\Installer\e57cee9.msi msiexec.exe File opened for modification C:\Windows\Installer\MSID14B.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSID218.tmp msiexec.exe File created C:\Windows\Installer\inprogressinstallinfo.ipi msiexec.exe File opened for modification C:\Windows\Installer\MSID361.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSID49B.tmp msiexec.exe File created C:\Windows\Installer\e57cee9.msi msiexec.exe -
Executes dropped EXE 1 IoCs
Processes:
MSID49B.tmppid process 4816 MSID49B.tmp -
Loads dropped DLL 6 IoCs
Processes:
MsiExec.exerundll32.exerundll32.exepid process 3096 MsiExec.exe 3096 MsiExec.exe 3096 MsiExec.exe 3096 MsiExec.exe 4320 rundll32.exe 2272 rundll32.exe -
Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
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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.
Processes:
MsiExec.exeMSID49B.tmprundll32.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MsiExec.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MSID49B.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
Checks SCSI registry key(s) 3 TTPs 5 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
vssvc.exedescription 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 20 IoCs
Processes:
msiexec.exerundll32.exepid process 4448 msiexec.exe 4448 msiexec.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe 2272 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
msiexec.exemsiexec.exevssvc.exesrtasks.exeExplorer.EXEdescription pid process Token: SeShutdownPrivilege 4668 msiexec.exe Token: SeIncreaseQuotaPrivilege 4668 msiexec.exe Token: SeSecurityPrivilege 4448 msiexec.exe Token: SeCreateTokenPrivilege 4668 msiexec.exe Token: SeAssignPrimaryTokenPrivilege 4668 msiexec.exe Token: SeLockMemoryPrivilege 4668 msiexec.exe Token: SeIncreaseQuotaPrivilege 4668 msiexec.exe Token: SeMachineAccountPrivilege 4668 msiexec.exe Token: SeTcbPrivilege 4668 msiexec.exe Token: SeSecurityPrivilege 4668 msiexec.exe Token: SeTakeOwnershipPrivilege 4668 msiexec.exe Token: SeLoadDriverPrivilege 4668 msiexec.exe Token: SeSystemProfilePrivilege 4668 msiexec.exe Token: SeSystemtimePrivilege 4668 msiexec.exe Token: SeProfSingleProcessPrivilege 4668 msiexec.exe Token: SeIncBasePriorityPrivilege 4668 msiexec.exe Token: SeCreatePagefilePrivilege 4668 msiexec.exe Token: SeCreatePermanentPrivilege 4668 msiexec.exe Token: SeBackupPrivilege 4668 msiexec.exe Token: SeRestorePrivilege 4668 msiexec.exe Token: SeShutdownPrivilege 4668 msiexec.exe Token: SeDebugPrivilege 4668 msiexec.exe Token: SeAuditPrivilege 4668 msiexec.exe Token: SeSystemEnvironmentPrivilege 4668 msiexec.exe Token: SeChangeNotifyPrivilege 4668 msiexec.exe Token: SeRemoteShutdownPrivilege 4668 msiexec.exe Token: SeUndockPrivilege 4668 msiexec.exe Token: SeSyncAgentPrivilege 4668 msiexec.exe Token: SeEnableDelegationPrivilege 4668 msiexec.exe Token: SeManageVolumePrivilege 4668 msiexec.exe Token: SeImpersonatePrivilege 4668 msiexec.exe Token: SeCreateGlobalPrivilege 4668 msiexec.exe Token: SeBackupPrivilege 2496 vssvc.exe Token: SeRestorePrivilege 2496 vssvc.exe Token: SeAuditPrivilege 2496 vssvc.exe Token: SeBackupPrivilege 4448 msiexec.exe Token: SeRestorePrivilege 4448 msiexec.exe Token: SeRestorePrivilege 4448 msiexec.exe Token: SeTakeOwnershipPrivilege 4448 msiexec.exe Token: SeRestorePrivilege 4448 msiexec.exe Token: SeTakeOwnershipPrivilege 4448 msiexec.exe Token: SeRestorePrivilege 4448 msiexec.exe Token: SeTakeOwnershipPrivilege 4448 msiexec.exe Token: SeRestorePrivilege 4448 msiexec.exe Token: SeTakeOwnershipPrivilege 4448 msiexec.exe Token: SeRestorePrivilege 4448 msiexec.exe Token: SeTakeOwnershipPrivilege 4448 msiexec.exe Token: SeRestorePrivilege 4448 msiexec.exe Token: SeTakeOwnershipPrivilege 4448 msiexec.exe Token: SeRestorePrivilege 4448 msiexec.exe Token: SeTakeOwnershipPrivilege 4448 msiexec.exe Token: SeRestorePrivilege 4448 msiexec.exe Token: SeTakeOwnershipPrivilege 4448 msiexec.exe Token: SeRestorePrivilege 4448 msiexec.exe Token: SeTakeOwnershipPrivilege 4448 msiexec.exe Token: SeBackupPrivilege 5012 srtasks.exe Token: SeRestorePrivilege 5012 srtasks.exe Token: SeSecurityPrivilege 5012 srtasks.exe Token: SeTakeOwnershipPrivilege 5012 srtasks.exe Token: SeBackupPrivilege 5012 srtasks.exe Token: SeRestorePrivilege 5012 srtasks.exe Token: SeSecurityPrivilege 5012 srtasks.exe Token: SeTakeOwnershipPrivilege 5012 srtasks.exe Token: SeShutdownPrivilege 3380 Explorer.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
msiexec.exepid process 4668 msiexec.exe 4668 msiexec.exe -
Suspicious use of UnmapMainImage 1 IoCs
Processes:
Explorer.EXEpid process 3380 Explorer.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
msiexec.exerundll32.exerundll32.exedescription pid process target process PID 4448 wrote to memory of 5012 4448 msiexec.exe srtasks.exe PID 4448 wrote to memory of 5012 4448 msiexec.exe srtasks.exe PID 4448 wrote to memory of 3096 4448 msiexec.exe MsiExec.exe PID 4448 wrote to memory of 3096 4448 msiexec.exe MsiExec.exe PID 4448 wrote to memory of 3096 4448 msiexec.exe MsiExec.exe PID 4448 wrote to memory of 4816 4448 msiexec.exe MSID49B.tmp PID 4448 wrote to memory of 4816 4448 msiexec.exe MSID49B.tmp PID 4448 wrote to memory of 4816 4448 msiexec.exe MSID49B.tmp PID 4320 wrote to memory of 2272 4320 rundll32.exe rundll32.exe PID 4320 wrote to memory of 2272 4320 rundll32.exe rundll32.exe PID 2272 wrote to memory of 3380 2272 rundll32.exe Explorer.EXE -
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
- Suspicious use of UnmapMainImage
PID:3380 -
C:\Windows\system32\msiexec.exemsiexec.exe /I C:\Users\Admin\AppData\Local\Temp\merd.msi2⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4668
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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:4320 -
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:2272
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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:4448 -
C:\Windows\system32\srtasks.exeC:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:22⤵
- Suspicious use of AdjustPrivilegeToken
PID:5012
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C:\Windows\syswow64\MsiExec.exeC:\Windows\syswow64\MsiExec.exe -Embedding 98FB30082A0B50FBDBE02561645D390C2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:3096
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C:\Windows\Installer\MSID49B.tmp"C:\Windows\Installer\MSID49B.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:4816
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
PID:2496
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD57de9d72029b9e3b91325868f2bd6642b
SHA18308e391e44e36df5e729212fcad351768857365
SHA256b641e831bee19e90214474dbcf5a03b748a2149bdcc676d38e0c55ff1e443dd7
SHA512bbc60283498a7274ca7f718a600648360bd6ee38ea6798f46a062047a566c58d71863232101eda36931fd5b96221a0997f076486c228f4714c1d98c6c33e2e1f
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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
MD57406cbe7e279886901110bf530ecd79e
SHA1a54942046d503f75b23a620b5b847fdcd70f2857
SHA256c0ba4ad7ac984b0b7509492b7ca3f9840a944aafc2639fec759c162990c4e419
SHA512950e35cda8e7a4e869d6b0d8a96601cd30bf40d4766a02d2c89a6b100fc69b4150e37ea4d2e7d257f50f7efc36578bb5c57d7f7356072d1a1ee45b2493f73236
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\??\Volume{612d9cf5-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{1bff4c85-4a6b-4694-aec3-f34ebff9c25b}_OnDiskSnapshotProp
Filesize6KB
MD56037630b14d47910a2ed85c4efc13eb7
SHA11f7cfc365c57451f23254ead19eb5ff6ebc664c8
SHA25604d88805a3f73da9ae744f953955a174a70d08a0f872ec52ea16b53053fc3e4e
SHA512470f77a95286ad6d8b94482ae6ef0f160e04939fbd7bb5a7d58cd12627ccd5b3cc1fb4670d8e268aec44fd18265f554edd4548b99eda824af777ffcd32d18652