latrodectus | aa85fcfa9022842d3ee68711e8abf20fa402f3f5f2cfc918d7c7ce9a30654c7b

Analysis

max time kernel
90s
max time network
94s
platform
windows7_x64
resource
win7-20240903-en
submitted
14/09/2024, 01:08

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General

Target

6ed4c0b2e67a048fea0163a19588d4cf3ae469b62cbf8536cb6c2a213cbfd56f.js

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
behavioral1/memory/956-45-0x00000000001C0000-0x00000000001D6000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/956-46-0x00000000001C0000-0x00000000001D6000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2008-55-0x0000000000140000-0x0000000000156000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2008-54-0x0000000000140000-0x0000000000156000-memory.dmp	family_latrodectus_1_4

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

Executes dropped EXE 1 IoCs

pid	Process
2620	MSI5B21.tmp

Loads dropped DLL 11 IoCs

pid	Process
2824	MsiExec.exe
2824	MsiExec.exe
2824	MsiExec.exe
956	rundll32.exe
956	rundll32.exe
956	rundll32.exe
956	rundll32.exe
2008	rundll32.exe
2008	rundll32.exe
2008	rundll32.exe
2008	rundll32.exe

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	2212	msiexec.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)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\B:	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)	\??\Y:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe

Drops file in Windows directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\MSI5054.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI5100.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\f78519b.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI5A45.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI5B21.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI4338.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI4E40.tmp	msiexec.exe
File created	C:\Windows\Installer\f78519b.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\	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	MSI5B21.tmp

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2212	msiexec.exe
2212	msiexec.exe

Suspicious use of AdjustPrivilegeToken 52 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2368	wscript.exe
Token: SeIncreaseQuotaPrivilege	2368	wscript.exe
Token: SeRestorePrivilege	2212	msiexec.exe
Token: SeTakeOwnershipPrivilege	2212	msiexec.exe
Token: SeSecurityPrivilege	2212	msiexec.exe
Token: SeCreateTokenPrivilege	2368	wscript.exe
Token: SeAssignPrimaryTokenPrivilege	2368	wscript.exe
Token: SeLockMemoryPrivilege	2368	wscript.exe
Token: SeIncreaseQuotaPrivilege	2368	wscript.exe
Token: SeMachineAccountPrivilege	2368	wscript.exe
Token: SeTcbPrivilege	2368	wscript.exe
Token: SeSecurityPrivilege	2368	wscript.exe
Token: SeTakeOwnershipPrivilege	2368	wscript.exe
Token: SeLoadDriverPrivilege	2368	wscript.exe
Token: SeSystemProfilePrivilege	2368	wscript.exe
Token: SeSystemtimePrivilege	2368	wscript.exe
Token: SeProfSingleProcessPrivilege	2368	wscript.exe
Token: SeIncBasePriorityPrivilege	2368	wscript.exe
Token: SeCreatePagefilePrivilege	2368	wscript.exe
Token: SeCreatePermanentPrivilege	2368	wscript.exe
Token: SeBackupPrivilege	2368	wscript.exe
Token: SeRestorePrivilege	2368	wscript.exe
Token: SeShutdownPrivilege	2368	wscript.exe
Token: SeDebugPrivilege	2368	wscript.exe
Token: SeAuditPrivilege	2368	wscript.exe
Token: SeSystemEnvironmentPrivilege	2368	wscript.exe
Token: SeChangeNotifyPrivilege	2368	wscript.exe
Token: SeRemoteShutdownPrivilege	2368	wscript.exe
Token: SeUndockPrivilege	2368	wscript.exe
Token: SeSyncAgentPrivilege	2368	wscript.exe
Token: SeEnableDelegationPrivilege	2368	wscript.exe
Token: SeManageVolumePrivilege	2368	wscript.exe
Token: SeImpersonatePrivilege	2368	wscript.exe
Token: SeCreateGlobalPrivilege	2368	wscript.exe
Token: SeRestorePrivilege	2212	msiexec.exe
Token: SeTakeOwnershipPrivilege	2212	msiexec.exe
Token: SeRestorePrivilege	2212	msiexec.exe
Token: SeTakeOwnershipPrivilege	2212	msiexec.exe
Token: SeRestorePrivilege	2212	msiexec.exe
Token: SeTakeOwnershipPrivilege	2212	msiexec.exe
Token: SeRestorePrivilege	2212	msiexec.exe
Token: SeTakeOwnershipPrivilege	2212	msiexec.exe
Token: SeRestorePrivilege	2212	msiexec.exe
Token: SeTakeOwnershipPrivilege	2212	msiexec.exe
Token: SeRestorePrivilege	2212	msiexec.exe
Token: SeTakeOwnershipPrivilege	2212	msiexec.exe
Token: SeRestorePrivilege	2212	msiexec.exe
Token: SeTakeOwnershipPrivilege	2212	msiexec.exe
Token: SeRestorePrivilege	2212	msiexec.exe
Token: SeTakeOwnershipPrivilege	2212	msiexec.exe
Token: SeRestorePrivilege	2212	msiexec.exe
Token: SeTakeOwnershipPrivilege	2212	msiexec.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2824	2212	msiexec.exe	30
PID 2212 wrote to memory of 2824	2212	msiexec.exe	30
PID 2212 wrote to memory of 2824	2212	msiexec.exe	30
PID 2212 wrote to memory of 2824	2212	msiexec.exe	30
PID 2212 wrote to memory of 2824	2212	msiexec.exe	30
PID 2212 wrote to memory of 2824	2212	msiexec.exe	30
PID 2212 wrote to memory of 2824	2212	msiexec.exe	30
PID 2212 wrote to memory of 2620	2212	msiexec.exe	32
PID 2212 wrote to memory of 2620	2212	msiexec.exe	32
PID 2212 wrote to memory of 2620	2212	msiexec.exe	32
PID 2212 wrote to memory of 2620	2212	msiexec.exe	32
PID 2212 wrote to memory of 2620	2212	msiexec.exe	32
PID 2212 wrote to memory of 2620	2212	msiexec.exe	32
PID 2212 wrote to memory of 2620	2212	msiexec.exe	32
PID 956 wrote to memory of 2008	956	rundll32.exe	34
PID 956 wrote to memory of 2008	956	rundll32.exe	34
PID 956 wrote to memory of 2008	956	rundll32.exe	34

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\6ed4c0b2e67a048fea0163a19588d4cf3ae469b62cbf8536cb6c2a213cbfd56f.js
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2368

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
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding AD31032024C9C15FD0D453898C81F55C
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2824
- C:\Windows\Installer\MSI5B21.tmp
  "C:\Windows\Installer\MSI5B21.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:2620

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:956
- C:\Windows\System32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_3e411615.dll", NvPluginGetInfo
  2⤵
  - Loads dropped DLL
  PID:2008

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

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Downloads

C:\Config.Msi\f78519c.rbs

Filesize
1KB

MD5
783e9f7e12147d67577bf2b591dce1db

SHA1
6f727e938f38fc44f26491d0cdb685d894705aaa

SHA256
b35bb71aaf42a4dcbf9b1b6b8319f09ac633140ed63a2366c0110365c2f7038a

SHA512
2ddb0700b7e8a750025229a7966ae39bca4956f339fa7bd54ab3bbd241fb59bd2da11e6aaf860bbc65e29763087ad10a04d764169b223ecd9bd9d1e1972d0147

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\MSI4338.tmp

Filesize
1.9MB

MD5
c017277279dada1b9653bc6838019952

SHA1
4d66580dade368ea823c2afc602ad3686c20d4d1

SHA256
f60c7e2cd7078584e1fb2eacd6270c314f1e23f76a4cd78c5d13eec215f0e41c

SHA512
cd9fea4bfa73987fb95e4e15ee6fa5c489842b79f8a497ea7dd65ec355db9df6d4af786612e6d9f43e7293723a91841465368728fb1b5361716a9297008adfa2

Download Submit
C:\Windows\Installer\MSI4E40.tmp

Filesize
436KB

MD5
475d20c0ea477a35660e3f67ecf0a1df

SHA1
67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

SHA256
426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

SHA512
99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

Download Submit
C:\Windows\Installer\MSI5B21.tmp

Filesize
389KB

MD5
b9545ed17695a32face8c3408a6a3553

SHA1
f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

SHA256
1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

SHA512
f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

Download Submit
memory/956-45-0x00000000001C0000-0x00000000001D6000-memory.dmp

Filesize
88KB

Download
memory/956-46-0x00000000001C0000-0x00000000001D6000-memory.dmp

Filesize
88KB

Download
memory/956-48-0x0000000180000000-0x00000001801DC000-memory.dmp

Filesize
1.9MB

Download
memory/2008-55-0x0000000000140000-0x0000000000156000-memory.dmp

Filesize
88KB

Download
memory/2008-54-0x0000000000140000-0x0000000000156000-memory.dmp

Filesize
88KB

Download
memory/2620-39-0x00000000000C0000-0x00000000000C2000-memory.dmp

Filesize
8KB

Download