latrodectus | 2ff4229d9798583e7414289a26b602328043a2a7c9e7b97eab5c13cfeb59c6e7

Analysis

max time kernel
233s
max time network
205s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
13/09/2024, 03:45

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General

Target

13092024_0345_Document-03-42-37.js
Size

714KB
MD5

14e41235ec85f0c8f799918c9c8ecb78
SHA1

3b990c3b582a100bd01918c102d26ad6d90099d7
SHA256

2ff4229d9798583e7414289a26b602328043a2a7c9e7b97eab5c13cfeb59c6e7
SHA512

318d1b10d81b1f13eee6b7b5218d843c0ea8bbc7b7e1dfb307f1f4a36d1cc6e4087d40227bd7455ab8a2d9832e91e926a9ae1823242500fe81af62270a7e281d
SSDEEP

12288:vRXy35hJjZ7gyVIxB+wnTTfjqag4Pmbh89s2U8Hmr:pG5hbnVY9H7gzm9w8Gr

Score

10^/10

latrodectus discovery execution loader

Malware Config

Signatures

Detects Latrodectus 5 IoCs

Detects Latrodectus v1.4.

resource	yara_rule
behavioral2/memory/392-45-0x0000020982F10000-0x0000020982F26000-memory.dmp	family_latrodectus_1_4
behavioral2/memory/392-47-0x0000020982F10000-0x0000020982F26000-memory.dmp	family_latrodectus_1_4
behavioral2/memory/4344-51-0x00000196E4CC0000-0x00000196E4CD6000-memory.dmp	family_latrodectus_1_4
behavioral2/memory/4344-52-0x00000196E4CC0000-0x00000196E4CD6000-memory.dmp	family_latrodectus_1_4
behavioral2/memory/4344-53-0x00000196E4CC0000-0x00000196E4CD6000-memory.dmp	family_latrodectus_1_4

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

Blocklisted process makes network request 3 IoCs

flow	pid	Process
3	1624	msiexec.exe
43	4344	rundll32.exe
45	4344	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
3932	MSI9B7B.tmp

Loads dropped DLL 7 IoCs

pid	Process
3464	MsiExec.exe
3464	MsiExec.exe
3464	MsiExec.exe
3464	MsiExec.exe
392	rundll32.exe
4344	rundll32.exe
4640	rundll32.exe

Enumerates connected drives 3 TTPs 23 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)	\??\Z:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\V:	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)	\??\G:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe

Drops file in Windows directory 10 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\MSI9B7B.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI902A.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI9849.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI99F1.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	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\MSI9983.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI9A11.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI9A60.tmp	msiexec.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007

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	MSI9B7B.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1624	msiexec.exe
1624	msiexec.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2380	wscript.exe
Token: SeIncreaseQuotaPrivilege	2380	wscript.exe
Token: SeSecurityPrivilege	1624	msiexec.exe
Token: SeCreateTokenPrivilege	2380	wscript.exe
Token: SeAssignPrimaryTokenPrivilege	2380	wscript.exe
Token: SeLockMemoryPrivilege	2380	wscript.exe
Token: SeIncreaseQuotaPrivilege	2380	wscript.exe
Token: SeMachineAccountPrivilege	2380	wscript.exe
Token: SeTcbPrivilege	2380	wscript.exe
Token: SeSecurityPrivilege	2380	wscript.exe
Token: SeTakeOwnershipPrivilege	2380	wscript.exe
Token: SeLoadDriverPrivilege	2380	wscript.exe
Token: SeSystemProfilePrivilege	2380	wscript.exe
Token: SeSystemtimePrivilege	2380	wscript.exe
Token: SeProfSingleProcessPrivilege	2380	wscript.exe
Token: SeIncBasePriorityPrivilege	2380	wscript.exe
Token: SeCreatePagefilePrivilege	2380	wscript.exe
Token: SeCreatePermanentPrivilege	2380	wscript.exe
Token: SeBackupPrivilege	2380	wscript.exe
Token: SeRestorePrivilege	2380	wscript.exe
Token: SeShutdownPrivilege	2380	wscript.exe
Token: SeDebugPrivilege	2380	wscript.exe
Token: SeAuditPrivilege	2380	wscript.exe
Token: SeSystemEnvironmentPrivilege	2380	wscript.exe
Token: SeChangeNotifyPrivilege	2380	wscript.exe
Token: SeRemoteShutdownPrivilege	2380	wscript.exe
Token: SeUndockPrivilege	2380	wscript.exe
Token: SeSyncAgentPrivilege	2380	wscript.exe
Token: SeEnableDelegationPrivilege	2380	wscript.exe
Token: SeManageVolumePrivilege	2380	wscript.exe
Token: SeImpersonatePrivilege	2380	wscript.exe
Token: SeCreateGlobalPrivilege	2380	wscript.exe
Token: SeRestorePrivilege	1624	msiexec.exe
Token: SeTakeOwnershipPrivilege	1624	msiexec.exe
Token: SeRestorePrivilege	1624	msiexec.exe
Token: SeTakeOwnershipPrivilege	1624	msiexec.exe
Token: SeRestorePrivilege	1624	msiexec.exe
Token: SeTakeOwnershipPrivilege	1624	msiexec.exe
Token: SeRestorePrivilege	1624	msiexec.exe
Token: SeTakeOwnershipPrivilege	1624	msiexec.exe
Token: SeRestorePrivilege	1624	msiexec.exe
Token: SeTakeOwnershipPrivilege	1624	msiexec.exe
Token: SeRestorePrivilege	1624	msiexec.exe
Token: SeTakeOwnershipPrivilege	1624	msiexec.exe
Token: SeRestorePrivilege	1624	msiexec.exe
Token: SeTakeOwnershipPrivilege	1624	msiexec.exe
Token: SeRestorePrivilege	1624	msiexec.exe
Token: SeTakeOwnershipPrivilege	1624	msiexec.exe
Token: SeRestorePrivilege	1624	msiexec.exe
Token: SeTakeOwnershipPrivilege	1624	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 3464	1624	msiexec.exe	89
PID 1624 wrote to memory of 3464	1624	msiexec.exe	89
PID 1624 wrote to memory of 3464	1624	msiexec.exe	89
PID 1624 wrote to memory of 3932	1624	msiexec.exe	92
PID 1624 wrote to memory of 3932	1624	msiexec.exe	92
PID 1624 wrote to memory of 3932	1624	msiexec.exe	92
PID 392 wrote to memory of 4344	392	rundll32.exe	96
PID 392 wrote to memory of 4344	392	rundll32.exe	96

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

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\13092024_0345_Document-03-42-37.js
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2380

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Blocklisted process makes network request
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 81A1273E059B100725DDACE4BCC165B4
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:3464
- C:\Windows\Installer\MSI9B7B.tmp
  "C:\Windows\Installer\MSI9B7B.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:3932

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:392
- C:\Windows\System32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_2bba8ec5.dll", NvPluginGetInfo
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  PID:4344

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_2bba8ec5.dll", NvPluginGetInfo
1⤵
- Loads dropped DLL
PID:4640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Persistence

Privilege Escalation

Defense Evasion

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\e579a2f.rbs

Filesize
1KB

MD5
4afc907a4e88692f333a1f0cf0d32476

SHA1
9873bfd4a2fe336ddba14204cd822bd670bcf2cf

SHA256
3c26404f43058193b6a7bc1b206f453743e11849aa77f86bb4309ed451363ec0

SHA512
3126054c8182358d0fa57777cee11aeea61f5f568f26abe910e166b664db5cf7b327491328a47595d52f76f21b4942f8c79dc96eee49cfa01a20ba9bb9b6d54f

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\MSI902A.tmp

Filesize
1.9MB

MD5
c017277279dada1b9653bc6838019952

SHA1
4d66580dade368ea823c2afc602ad3686c20d4d1

SHA256
f60c7e2cd7078584e1fb2eacd6270c314f1e23f76a4cd78c5d13eec215f0e41c

SHA512
cd9fea4bfa73987fb95e4e15ee6fa5c489842b79f8a497ea7dd65ec355db9df6d4af786612e6d9f43e7293723a91841465368728fb1b5361716a9297008adfa2

Download Submit
C:\Windows\Installer\MSI9849.tmp

Filesize
436KB

MD5
475d20c0ea477a35660e3f67ecf0a1df

SHA1
67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

SHA256
426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

SHA512
99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

Download Submit
C:\Windows\Installer\MSI9B7B.tmp

Filesize
389KB

MD5
b9545ed17695a32face8c3408a6a3553

SHA1
f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

SHA256
1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

SHA512
f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

Download Submit
memory/392-45-0x0000020982F10000-0x0000020982F26000-memory.dmp

Filesize
88KB

Download
memory/392-47-0x0000020982F10000-0x0000020982F26000-memory.dmp

Filesize
88KB

Download
memory/392-49-0x0000000180000000-0x00000001801DC000-memory.dmp

Filesize
1.9MB

Download
memory/4344-51-0x00000196E4CC0000-0x00000196E4CD6000-memory.dmp

Filesize
88KB

Download
memory/4344-52-0x00000196E4CC0000-0x00000196E4CD6000-memory.dmp

Filesize
88KB

Download
memory/4344-53-0x00000196E4CC0000-0x00000196E4CD6000-memory.dmp

Filesize
88KB

Download