latrodectus | bffbd268ceb70ee78bcfcc2910a025fdfe522e4a0b86d3c4e27dcf93483232af

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
submitted
13/09/2024, 19:54

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Document105612.js
Size

713KB
MD5

b0c01f0333f8f3c02f6a6967a7c24d2c
SHA1

70dceebd8f5845d56b939ddb40828314a55ee9b2
SHA256

bffbd268ceb70ee78bcfcc2910a025fdfe522e4a0b86d3c4e27dcf93483232af
SHA512

bb29f11660a59871f950e84597856d12245ecac372aa7a06a814c962732d96f16ab05ca834b6b1584e3dad26ac83691d9ea9a7504fc844c8c45c1e6006a678d3
SSDEEP

12288:2HAr5brT4tcc1LvjKgsYpxnlFylL80a0QQ4fl:/5brT01LbKgsYp1rylwLlF

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/2828-46-0x0000000000140000-0x0000000000156000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2828-45-0x0000000000140000-0x0000000000156000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2700-55-0x00000000001D0000-0x00000000001E6000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2700-54-0x00000000001D0000-0x00000000001E6000-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
2696	MSIE334.tmp

Loads dropped DLL 11 IoCs

pid	Process
2720	MsiExec.exe
2720	MsiExec.exe
2720	MsiExec.exe
2828	rundll32.exe
2828	rundll32.exe
2828	rundll32.exe
2828	rundll32.exe
2700	rundll32.exe
2700	rundll32.exe
2700	rundll32.exe
2700	rundll32.exe

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	836	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)	\??\I:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe

Drops file in Windows directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\MSID99D.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIE303.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIE334.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\f76e1d9.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIE0CF.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIE15C.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIE19B.tmp	msiexec.exe
File created	C:\Windows\Installer\f76e1d9.ipi	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	MSIE334.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
836	msiexec.exe
836	msiexec.exe

Suspicious use of AdjustPrivilegeToken 52 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2028	wscript.exe
Token: SeIncreaseQuotaPrivilege	2028	wscript.exe
Token: SeRestorePrivilege	836	msiexec.exe
Token: SeTakeOwnershipPrivilege	836	msiexec.exe
Token: SeSecurityPrivilege	836	msiexec.exe
Token: SeCreateTokenPrivilege	2028	wscript.exe
Token: SeAssignPrimaryTokenPrivilege	2028	wscript.exe
Token: SeLockMemoryPrivilege	2028	wscript.exe
Token: SeIncreaseQuotaPrivilege	2028	wscript.exe
Token: SeMachineAccountPrivilege	2028	wscript.exe
Token: SeTcbPrivilege	2028	wscript.exe
Token: SeSecurityPrivilege	2028	wscript.exe
Token: SeTakeOwnershipPrivilege	2028	wscript.exe
Token: SeLoadDriverPrivilege	2028	wscript.exe
Token: SeSystemProfilePrivilege	2028	wscript.exe
Token: SeSystemtimePrivilege	2028	wscript.exe
Token: SeProfSingleProcessPrivilege	2028	wscript.exe
Token: SeIncBasePriorityPrivilege	2028	wscript.exe
Token: SeCreatePagefilePrivilege	2028	wscript.exe
Token: SeCreatePermanentPrivilege	2028	wscript.exe
Token: SeBackupPrivilege	2028	wscript.exe
Token: SeRestorePrivilege	2028	wscript.exe
Token: SeShutdownPrivilege	2028	wscript.exe
Token: SeDebugPrivilege	2028	wscript.exe
Token: SeAuditPrivilege	2028	wscript.exe
Token: SeSystemEnvironmentPrivilege	2028	wscript.exe
Token: SeChangeNotifyPrivilege	2028	wscript.exe
Token: SeRemoteShutdownPrivilege	2028	wscript.exe
Token: SeUndockPrivilege	2028	wscript.exe
Token: SeSyncAgentPrivilege	2028	wscript.exe
Token: SeEnableDelegationPrivilege	2028	wscript.exe
Token: SeManageVolumePrivilege	2028	wscript.exe
Token: SeImpersonatePrivilege	2028	wscript.exe
Token: SeCreateGlobalPrivilege	2028	wscript.exe
Token: SeRestorePrivilege	836	msiexec.exe
Token: SeTakeOwnershipPrivilege	836	msiexec.exe
Token: SeRestorePrivilege	836	msiexec.exe
Token: SeTakeOwnershipPrivilege	836	msiexec.exe
Token: SeRestorePrivilege	836	msiexec.exe
Token: SeTakeOwnershipPrivilege	836	msiexec.exe
Token: SeRestorePrivilege	836	msiexec.exe
Token: SeTakeOwnershipPrivilege	836	msiexec.exe
Token: SeRestorePrivilege	836	msiexec.exe
Token: SeTakeOwnershipPrivilege	836	msiexec.exe
Token: SeRestorePrivilege	836	msiexec.exe
Token: SeTakeOwnershipPrivilege	836	msiexec.exe
Token: SeRestorePrivilege	836	msiexec.exe
Token: SeTakeOwnershipPrivilege	836	msiexec.exe
Token: SeRestorePrivilege	836	msiexec.exe
Token: SeTakeOwnershipPrivilege	836	msiexec.exe
Token: SeRestorePrivilege	836	msiexec.exe
Token: SeTakeOwnershipPrivilege	836	msiexec.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 836 wrote to memory of 2720	836	msiexec.exe	32
PID 836 wrote to memory of 2720	836	msiexec.exe	32
PID 836 wrote to memory of 2720	836	msiexec.exe	32
PID 836 wrote to memory of 2720	836	msiexec.exe	32
PID 836 wrote to memory of 2720	836	msiexec.exe	32
PID 836 wrote to memory of 2720	836	msiexec.exe	32
PID 836 wrote to memory of 2720	836	msiexec.exe	32
PID 836 wrote to memory of 2696	836	msiexec.exe	33
PID 836 wrote to memory of 2696	836	msiexec.exe	33
PID 836 wrote to memory of 2696	836	msiexec.exe	33
PID 836 wrote to memory of 2696	836	msiexec.exe	33
PID 836 wrote to memory of 2696	836	msiexec.exe	33
PID 836 wrote to memory of 2696	836	msiexec.exe	33
PID 836 wrote to memory of 2696	836	msiexec.exe	33
PID 2828 wrote to memory of 2700	2828	rundll32.exe	35
PID 2828 wrote to memory of 2700	2828	rundll32.exe	35
PID 2828 wrote to memory of 2700	2828	rundll32.exe	35

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\Document105612.js
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2028

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:836
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding A3DF1CAA388CD0B681C4B2F4DCD920D0
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2720
- C:\Windows\Installer\MSIE334.tmp
  "C:\Windows\Installer\MSIE334.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:2696

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:2828
- C:\Windows\System32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_85e5c0e4.dll", NvPluginGetInfo
  2⤵
  - Loads dropped DLL
  PID:2700

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

Loading Replay Monitor...

Downloads

C:\Config.Msi\f76e1da.rbs

Filesize
1KB

MD5
d44853334dcb6da06cbc43a0b1ca383e

SHA1
83a88a4a24cad244592492ebf5bfba5a374c7ec1

SHA256
3316a9e9b56738355426ed14030aea6b602a4a76f3151164a211e462b7d3f3aa

SHA512
762e522a8fcbce4db2c7e860b4ea5263e5198e3445f5cd8cef4659a238d01b54f718a871fd85119922572fcff7ae7b8083b06600869d94cad3fa7f73a071a38f

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\MSID99D.tmp

Filesize
1.9MB

MD5
c017277279dada1b9653bc6838019952

SHA1
4d66580dade368ea823c2afc602ad3686c20d4d1

SHA256
f60c7e2cd7078584e1fb2eacd6270c314f1e23f76a4cd78c5d13eec215f0e41c

SHA512
cd9fea4bfa73987fb95e4e15ee6fa5c489842b79f8a497ea7dd65ec355db9df6d4af786612e6d9f43e7293723a91841465368728fb1b5361716a9297008adfa2

Download Submit
C:\Windows\Installer\MSIE0CF.tmp

Filesize
436KB

MD5
475d20c0ea477a35660e3f67ecf0a1df

SHA1
67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

SHA256
426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

SHA512
99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

Download Submit
C:\Windows\Installer\MSIE334.tmp

Filesize
389KB

MD5
b9545ed17695a32face8c3408a6a3553

SHA1
f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

SHA256
1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

SHA512
f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

Download Submit
memory/2696-39-0x00000000000F0000-0x00000000000F2000-memory.dmp

Filesize
8KB

Download
memory/2700-55-0x00000000001D0000-0x00000000001E6000-memory.dmp

Filesize
88KB

Download
memory/2700-54-0x00000000001D0000-0x00000000001E6000-memory.dmp

Filesize
88KB

Download
memory/2828-46-0x0000000000140000-0x0000000000156000-memory.dmp

Filesize
88KB

Download
memory/2828-45-0x0000000000140000-0x0000000000156000-memory.dmp

Filesize
88KB

Download
memory/2828-48-0x0000000180000000-0x00000001801DC000-memory.dmp

Filesize
1.9MB

Download