latrodectus | 9f5ae302ea1ed87c64e26390eb6f2a90593b3049aaa1292d495d4f93ac9b2d98

Analysis

max time kernel
662s
max time network
1135s
platform
windows11-21h2_x64
resource
win11-20240802-en
submitted
17/09/2024, 17:19

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General

Target

Document-09-46-15.js
Size

1.3MB
MD5

e2d9ca6364ff2314bfbcc263d7fea8fd
SHA1

c4c38c618cdb1663569606e06f64975ee1b37793
SHA256

9f5ae302ea1ed87c64e26390eb6f2a90593b3049aaa1292d495d4f93ac9b2d98
SHA512

7e7e28b421e1889762ce6abd40b89ec2ad971b909065aa90d7a95da5a992a70df53aa75d41e24a48b7feb3dc87ab7b6d8223adf9e583d4e96e256ae66509057d
SSDEEP

24576:cQmj6HVNI/sE6lxMkY4Nd5NL4PcTwZP7n3lGIUpeu2GE:cQmj6HVe/D6lxMkY4Nd5NLicTQPz3lGo

Score

10^/10

latrodectus discovery execution loader

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/992-45-0x000001D37CDF0000-0x000001D37CE06000-memory.dmp	family_latrodectus_1_4
behavioral2/memory/992-47-0x000001D37CDF0000-0x000001D37CE06000-memory.dmp	family_latrodectus_1_4
behavioral2/memory/3612-51-0x000001377F360000-0x000001377F376000-memory.dmp	family_latrodectus_1_4
behavioral2/memory/3612-52-0x000001377F360000-0x000001377F376000-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 5 IoCs

flow	pid	Process
1	1508	msiexec.exe
6	3612	rundll32.exe
8	3612	rundll32.exe
18	3612	rundll32.exe
19	3612	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
468	MSI485.tmp

Loads dropped DLL 6 IoCs

pid	Process
4492	MsiExec.exe
4492	MsiExec.exe
4492	MsiExec.exe
4492	MsiExec.exe
992	rundll32.exe
3612	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)	\??\R:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\H:	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)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe

Drops file in Windows directory 13 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\MSI3C7.tmp	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File created	C:\Windows\SystemTemp\~DF41569B3DBDD26099.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIF889.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI27D.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI378.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI3E7.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\SystemTemp\~DFF0DD9B09F5835289.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI417.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI485.tmp	msiexec.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log	msiexec.exe
File created	C:\Windows\SystemTemp\~DF1FD82A00882BCCED.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	MSI485.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1508	msiexec.exe
1508	msiexec.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeShutdownPrivilege	872	wscript.exe
Token: SeIncreaseQuotaPrivilege	872	wscript.exe
Token: SeSecurityPrivilege	1508	msiexec.exe
Token: SeCreateTokenPrivilege	872	wscript.exe
Token: SeAssignPrimaryTokenPrivilege	872	wscript.exe
Token: SeLockMemoryPrivilege	872	wscript.exe
Token: SeIncreaseQuotaPrivilege	872	wscript.exe
Token: SeMachineAccountPrivilege	872	wscript.exe
Token: SeTcbPrivilege	872	wscript.exe
Token: SeSecurityPrivilege	872	wscript.exe
Token: SeTakeOwnershipPrivilege	872	wscript.exe
Token: SeLoadDriverPrivilege	872	wscript.exe
Token: SeSystemProfilePrivilege	872	wscript.exe
Token: SeSystemtimePrivilege	872	wscript.exe
Token: SeProfSingleProcessPrivilege	872	wscript.exe
Token: SeIncBasePriorityPrivilege	872	wscript.exe
Token: SeCreatePagefilePrivilege	872	wscript.exe
Token: SeCreatePermanentPrivilege	872	wscript.exe
Token: SeBackupPrivilege	872	wscript.exe
Token: SeRestorePrivilege	872	wscript.exe
Token: SeShutdownPrivilege	872	wscript.exe
Token: SeDebugPrivilege	872	wscript.exe
Token: SeAuditPrivilege	872	wscript.exe
Token: SeSystemEnvironmentPrivilege	872	wscript.exe
Token: SeChangeNotifyPrivilege	872	wscript.exe
Token: SeRemoteShutdownPrivilege	872	wscript.exe
Token: SeUndockPrivilege	872	wscript.exe
Token: SeSyncAgentPrivilege	872	wscript.exe
Token: SeEnableDelegationPrivilege	872	wscript.exe
Token: SeManageVolumePrivilege	872	wscript.exe
Token: SeImpersonatePrivilege	872	wscript.exe
Token: SeCreateGlobalPrivilege	872	wscript.exe
Token: SeRestorePrivilege	1508	msiexec.exe
Token: SeTakeOwnershipPrivilege	1508	msiexec.exe
Token: SeRestorePrivilege	1508	msiexec.exe
Token: SeTakeOwnershipPrivilege	1508	msiexec.exe
Token: SeRestorePrivilege	1508	msiexec.exe
Token: SeTakeOwnershipPrivilege	1508	msiexec.exe
Token: SeRestorePrivilege	1508	msiexec.exe
Token: SeTakeOwnershipPrivilege	1508	msiexec.exe
Token: SeRestorePrivilege	1508	msiexec.exe
Token: SeTakeOwnershipPrivilege	1508	msiexec.exe
Token: SeRestorePrivilege	1508	msiexec.exe
Token: SeTakeOwnershipPrivilege	1508	msiexec.exe
Token: SeRestorePrivilege	1508	msiexec.exe
Token: SeTakeOwnershipPrivilege	1508	msiexec.exe
Token: SeRestorePrivilege	1508	msiexec.exe
Token: SeTakeOwnershipPrivilege	1508	msiexec.exe
Token: SeRestorePrivilege	1508	msiexec.exe
Token: SeTakeOwnershipPrivilege	1508	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 4492	1508	msiexec.exe	82
PID 1508 wrote to memory of 4492	1508	msiexec.exe	82
PID 1508 wrote to memory of 4492	1508	msiexec.exe	82
PID 1508 wrote to memory of 468	1508	msiexec.exe	83
PID 1508 wrote to memory of 468	1508	msiexec.exe	83
PID 1508 wrote to memory of 468	1508	msiexec.exe	83
PID 992 wrote to memory of 3612	992	rundll32.exe	85
PID 992 wrote to memory of 3612	992	rundll32.exe	85

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\Document-09-46-15.js
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:872

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:1508
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding BC5C5A413ED2F10BEE24A4BB341522A4
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4492
- C:\Windows\Installer\MSI485.tmp
  "C:\Windows\Installer\MSI485.tmp" /DontWait C:/Windows/System32/rundll32.exe C:\Users\Admin\AppData\Roaming\rozelin.dll, Host
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:468

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\rozelin.dll, Host
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:992
- C:\Windows\System32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_c20715f6.dll", Host
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  PID:3612

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\e5803e5.rbs

Filesize
1KB

MD5
fcacc938ad10a47732f152f9bea54fd9

SHA1
62ff4b2bf61d2338d02898dc0e9684faa23e3f4e

SHA256
cebd36caadb6183c87ed362e1a3b77419e4ebd868975b09a1c00d1638eeea97c

SHA512
034a535a536927e2afdec57fa988649bcd2edfbcfc46e6813db0493ad55cb3d10d95aa098f7c43d559862af89c0fd7e184515827d83c964187346e33d7acea57

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

Filesize
1.5MB

MD5
f9bb8819674b780198ec05761a3ed0d6

SHA1
4c61542d76a0107eb80a950c33cd9bd5029a9b32

SHA256
3af3c1b6c72f09371c9975eb0914c5b187ba363c0cddf8164d14a0b7c1fcb5dc

SHA512
7b636446567b453c37a28b904d9f716a2aaff54676270760702995efdb521a10ae5f1a9254529eadc092b678a3b99e59efaec444f7f923d8e213298ae48f4fdc

Download Submit
C:\Windows\Installer\MSI27D.tmp

Filesize
436KB

MD5
475d20c0ea477a35660e3f67ecf0a1df

SHA1
67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

SHA256
426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

SHA512
99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

Download Submit
C:\Windows\Installer\MSI485.tmp

Filesize
389KB

MD5
b9545ed17695a32face8c3408a6a3553

SHA1
f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

SHA256
1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

SHA512
f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

Download Submit
C:\Windows\Installer\MSIF889.tmp

Filesize
1.8MB

MD5
b1c0657b678a8e3f320476ef4ba6dfd2

SHA1
883a69c2aa664a783b416ec44506aad9d03832d5

SHA256
24746dfb4ac476772d7a1e936b714b9f0df30612395e4d8e7f31a2c43983bc55

SHA512
89059e8f6ae5039cdac24e64cd3b3805691121963f395faee41fb1d8799134ae8ae5ba5f90fd29aec9e6625a4041fd7c2f70185167bf3bb85d4ddad8ab8a383a

Download Submit
memory/992-45-0x000001D37CDF0000-0x000001D37CE06000-memory.dmp

Filesize
88KB

Download
memory/992-47-0x000001D37CDF0000-0x000001D37CE06000-memory.dmp

Filesize
88KB

Download
memory/992-48-0x0000000180000000-0x0000000180190000-memory.dmp

Filesize
1.6MB

Download
memory/3612-51-0x000001377F360000-0x000001377F376000-memory.dmp

Filesize
88KB

Download
memory/3612-52-0x000001377F360000-0x000001377F376000-memory.dmp

Filesize
88KB

Download