latrodectus | f60c7e2cd7078584e1fb2eacd6270c314f1e23f76a4cd78c5d13eec215f0e41c

Analysis

max time kernel
1098s
max time network
1170s
platform
windows11-21h2_x64
resource
win11-20240802-en
submitted
13-09-2024 11:18

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General

Target

vfs.msi
Size

1.9MB
MD5

c017277279dada1b9653bc6838019952
SHA1

4d66580dade368ea823c2afc602ad3686c20d4d1
SHA256

f60c7e2cd7078584e1fb2eacd6270c314f1e23f76a4cd78c5d13eec215f0e41c
SHA512

cd9fea4bfa73987fb95e4e15ee6fa5c489842b79f8a497ea7dd65ec355db9df6d4af786612e6d9f43e7293723a91841465368728fb1b5361716a9297008adfa2
SSDEEP

49152:QGN3YhW8zBQSc0ZnSKBZKumZr7ANpTdzZfVSlaMBOno:3YY0Zn3K/ANPzbSlaBno

Score

10^/10

latrodectus discovery loader persistence privilege_escalation

Malware Config

Extracted

Family

latrodectus

https://isomicrotich.com/test/

https://rilomenifis.com/test/

Signatures

Detects Latrodectus 4 IoCs

Detects Latrodectus v1.4.

resource	yara_rule
behavioral2/memory/4936-46-0x000001A328EC0000-0x000001A328ED6000-memory.dmp	family_latrodectus_1_4
behavioral2/memory/4936-48-0x000001A328EC0000-0x000001A328ED6000-memory.dmp	family_latrodectus_1_4
behavioral2/memory/3332-53-0x000001BDB67B0000-0x000001BDB67C6000-memory.dmp	family_latrodectus_1_4
behavioral2/memory/3332-52-0x000001BDB67B0000-0x000001BDB67C6000-memory.dmp	family_latrodectus_1_4

Latrodectus family
latrodectus
Latrodectus loader
Latrodectus is a loader written in C++.
loader latrodectus

Blocklisted process makes network request 4 IoCs

flow	pid	Process
3	3332	rundll32.exe
4	3332	rundll32.exe
12	3332	rundll32.exe
13	3332	rundll32.exe

Enumerates connected drives 3 TTPs 46 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\H:	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)	\??\A:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe

Drops file in Windows directory 16 IoCs

description	ioc	Process
File created	C:\Windows\Installer\SourceHash{72A77E3B-B705-4CCF-8F7A-0CB540D0E61A}	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIB6A3.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIB576.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIB5E5.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIB5D5.tmp	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File created	C:\Windows\SystemTemp\~DF74A3609E75AB6C0B.TMP	msiexec.exe
File created	C:\Windows\SystemTemp\~DFD967997ED3355439.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\e57b41d.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\MSIB45C.tmp	msiexec.exe
File created	C:\Windows\Installer\e57b41d.msi	msiexec.exe
File created	C:\Windows\SystemTemp\~DF7B7DB6C62168101F.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIB625.tmp	msiexec.exe
File created	C:\Windows\SystemTemp\~DF797AF1D2846AAF5D.TMP	msiexec.exe

Executes dropped EXE 1 IoCs

pid	Process
828	MSIB6A3.tmp

Loads dropped DLL 8 IoCs

pid	Process
884	MsiExec.exe
884	MsiExec.exe
884	MsiExec.exe
884	MsiExec.exe
4936	rundll32.exe
3332	rundll32.exe
2548	rundll32.exe
2996	rundll32.exe

Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs

persistence privilege_escalation

Installer Packages

T1546.016

Msiexec

T1218.007

pid	Process
2628	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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MsiExec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSIB6A3.tmp

Checks SCSI registry key(s) 3 TTPs 5 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

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
4428	msiexec.exe
4428	msiexec.exe

Suspicious use of AdjustPrivilegeToken 63 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2628	msiexec.exe
Token: SeIncreaseQuotaPrivilege	2628	msiexec.exe
Token: SeSecurityPrivilege	4428	msiexec.exe
Token: SeCreateTokenPrivilege	2628	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	2628	msiexec.exe
Token: SeLockMemoryPrivilege	2628	msiexec.exe
Token: SeIncreaseQuotaPrivilege	2628	msiexec.exe
Token: SeMachineAccountPrivilege	2628	msiexec.exe
Token: SeTcbPrivilege	2628	msiexec.exe
Token: SeSecurityPrivilege	2628	msiexec.exe
Token: SeTakeOwnershipPrivilege	2628	msiexec.exe
Token: SeLoadDriverPrivilege	2628	msiexec.exe
Token: SeSystemProfilePrivilege	2628	msiexec.exe
Token: SeSystemtimePrivilege	2628	msiexec.exe
Token: SeProfSingleProcessPrivilege	2628	msiexec.exe
Token: SeIncBasePriorityPrivilege	2628	msiexec.exe
Token: SeCreatePagefilePrivilege	2628	msiexec.exe
Token: SeCreatePermanentPrivilege	2628	msiexec.exe
Token: SeBackupPrivilege	2628	msiexec.exe
Token: SeRestorePrivilege	2628	msiexec.exe
Token: SeShutdownPrivilege	2628	msiexec.exe
Token: SeDebugPrivilege	2628	msiexec.exe
Token: SeAuditPrivilege	2628	msiexec.exe
Token: SeSystemEnvironmentPrivilege	2628	msiexec.exe
Token: SeChangeNotifyPrivilege	2628	msiexec.exe
Token: SeRemoteShutdownPrivilege	2628	msiexec.exe
Token: SeUndockPrivilege	2628	msiexec.exe
Token: SeSyncAgentPrivilege	2628	msiexec.exe
Token: SeEnableDelegationPrivilege	2628	msiexec.exe
Token: SeManageVolumePrivilege	2628	msiexec.exe
Token: SeImpersonatePrivilege	2628	msiexec.exe
Token: SeCreateGlobalPrivilege	2628	msiexec.exe
Token: SeBackupPrivilege	5024	vssvc.exe
Token: SeRestorePrivilege	5024	vssvc.exe
Token: SeAuditPrivilege	5024	vssvc.exe
Token: SeBackupPrivilege	4428	msiexec.exe
Token: SeRestorePrivilege	4428	msiexec.exe
Token: SeRestorePrivilege	4428	msiexec.exe
Token: SeTakeOwnershipPrivilege	4428	msiexec.exe
Token: SeRestorePrivilege	4428	msiexec.exe
Token: SeTakeOwnershipPrivilege	4428	msiexec.exe
Token: SeRestorePrivilege	4428	msiexec.exe
Token: SeTakeOwnershipPrivilege	4428	msiexec.exe
Token: SeRestorePrivilege	4428	msiexec.exe
Token: SeTakeOwnershipPrivilege	4428	msiexec.exe
Token: SeBackupPrivilege	1164	srtasks.exe
Token: SeRestorePrivilege	1164	srtasks.exe
Token: SeSecurityPrivilege	1164	srtasks.exe
Token: SeTakeOwnershipPrivilege	1164	srtasks.exe
Token: SeRestorePrivilege	4428	msiexec.exe
Token: SeTakeOwnershipPrivilege	4428	msiexec.exe
Token: SeRestorePrivilege	4428	msiexec.exe
Token: SeTakeOwnershipPrivilege	4428	msiexec.exe
Token: SeRestorePrivilege	4428	msiexec.exe
Token: SeTakeOwnershipPrivilege	4428	msiexec.exe
Token: SeRestorePrivilege	4428	msiexec.exe
Token: SeTakeOwnershipPrivilege	4428	msiexec.exe
Token: SeRestorePrivilege	4428	msiexec.exe
Token: SeTakeOwnershipPrivilege	4428	msiexec.exe
Token: SeBackupPrivilege	1164	srtasks.exe
Token: SeRestorePrivilege	1164	srtasks.exe
Token: SeSecurityPrivilege	1164	srtasks.exe
Token: SeTakeOwnershipPrivilege	1164	srtasks.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2628	msiexec.exe
2628	msiexec.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4428 wrote to memory of 1164	4428	msiexec.exe	88
PID 4428 wrote to memory of 1164	4428	msiexec.exe	88
PID 4428 wrote to memory of 884	4428	msiexec.exe	90
PID 4428 wrote to memory of 884	4428	msiexec.exe	90
PID 4428 wrote to memory of 884	4428	msiexec.exe	90
PID 4428 wrote to memory of 828	4428	msiexec.exe	91
PID 4428 wrote to memory of 828	4428	msiexec.exe	91
PID 4428 wrote to memory of 828	4428	msiexec.exe	91
PID 4936 wrote to memory of 3332	4936	rundll32.exe	93
PID 4936 wrote to memory of 3332	4936	rundll32.exe	93

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.
persistence

Query Registry
T1012
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\vfs.msi
1⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2628

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:4428
- C:\Windows\system32\srtasks.exe
  C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1164
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding BA967517F27C8BCCBAC24C8BAB69C366
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:884
- C:\Windows\Installer\MSIB6A3.tmp
  "C:\Windows\Installer\MSIB6A3.tmp" /DontWait C:/Windows/System32/rundll32.exe C:\Users\Admin\AppData\Roaming\true.dll, NvPluginGetInfo
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:828

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
PID:5024

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\true.dll, NvPluginGetInfo
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\System32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_3b3afc02.dll", NvPluginGetInfo
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  PID:3332

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_3b3afc02.dll", NvPluginGetInfo
1⤵
- Loads dropped DLL
PID:2548

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_3b3afc02.dll", NvPluginGetInfo
1⤵
- Loads dropped DLL
PID:2996

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Installer Packages

T1546.016

Privilege Escalation

Event Triggered Execution

T1546

Installer Packages

T1546.016

Defense Evasion

System Binary Proxy Execution

T1218

Msiexec

T1218.007

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Config.Msi\e57b420.rbs

Filesize
1KB

MD5
efc60d3406b7b0a4bf9601b3812863fe

SHA1
d66b8ec4dd55bf367fdff428566695779b6d766b

SHA256
02714d54ea5298210d586a90d4a78ba54ea6d115ad9224b7b58edce035dc7adf

SHA512
10c676549f07de3567f054ad0db6b38dbc1e0b845112f0953dc1839ac31fa955260b81dec523b3d03111f6b1e6910946cb985adf783dc98b510a0c7e1a9e54ec

Download Submit
C:\Users\Admin\AppData\Roaming\true.dll

Filesize
1.8MB

MD5
6dc0d350d735fd1acc8219cfa5d02b9b

SHA1
7ba0708a4404715fb21a23acfbd88a25b7245ef1

SHA256
2333dd858fc40899a1bff3fb39fbc0b4e65a864bfd4eb73c26b48aaddcca7061

SHA512
99c9b6310363ce3a7d9ff680c4a0ae976553fc4789b12f9b60d9f629608d90cf4d64b4c8a037264f8aaa48fba69ae397236ef4c32c2eb6779fb5d9e0b3b0d52f

Download Submit
C:\Windows\Installer\MSIB45C.tmp

Filesize
436KB

MD5
475d20c0ea477a35660e3f67ecf0a1df

SHA1
67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

SHA256
426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

SHA512
99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

Download Submit
C:\Windows\Installer\MSIB6A3.tmp

Filesize
389KB

MD5
b9545ed17695a32face8c3408a6a3553

SHA1
f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

SHA256
1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

SHA512
f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

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

Filesize
12.8MB

MD5
0d41c7a7962fb8cc6e14e36ff9ac7083

SHA1
ad3afcb56a405ffe13bbafe2772b61e288981761

SHA256
da63478518649400502a11db85dbe77de6840034c3bd79efc7b1fcea5f2fdcba

SHA512
15003b9e07ddde3b4b3b8c8406433f4a690f61749ee63bce6266cfa775a1f063dc60834abbaec5bc25df3f363d69d4613e812052bd51d93155af198c847dab8e

Download Submit
\??\Volume{e2de8665-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{1637a748-2d67-40cf-b4cb-15656586a947}_OnDiskSnapshotProp

Filesize
6KB

MD5
2bf51ffdce28ae4aef2fbcb4410d6c0e

SHA1
91b341b4729dc59b480d85f43bb371de3fa8adf9

SHA256
d6f752c6397155abb7ba711a99812d0873733cadc18cf016a46dc270d1d913ff

SHA512
af306a70e4d22bb701480122ce9178f416e22ee8e0ddb6fbcd2aa39a241bcc09f9d864149e8ecc19fb3f713b88676c01a4f8c9f79c11ef7b7e1f8d9d59ce0c7e

Download Submit
memory/3332-53-0x000001BDB67B0000-0x000001BDB67C6000-memory.dmp

Filesize
88KB

Download
memory/3332-52-0x000001BDB67B0000-0x000001BDB67C6000-memory.dmp

Filesize
88KB

Download
memory/4936-46-0x000001A328EC0000-0x000001A328ED6000-memory.dmp

Filesize
88KB

Download
memory/4936-48-0x000001A328EC0000-0x000001A328ED6000-memory.dmp

Filesize
88KB

Download
memory/4936-49-0x0000000180000000-0x00000001801DC000-memory.dmp

Filesize
1.9MB

Download