latrodectus | d632551161e59bbc94687fda33925eb227c77f2da0b38a953cbfbffa14f68534

Analysis

max time kernel
135s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30-08-2024 09:10

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General

Target

d632551161e59bbc94687fda33925eb227c77f2da0b38a953cbfbffa14f68534.js
Size

726KB
MD5

914de97efaa32ba7dab129ccd14677b3
SHA1

7501c4a79484a62f9f01d4a22d0e454fc165c16f
SHA256

d632551161e59bbc94687fda33925eb227c77f2da0b38a953cbfbffa14f68534
SHA512

1f37e21a042214bc2c5b099f3633f102469b6d03e6d19090dc4602fec627dd89bf7e5bcf912691528c25aff8197dd4205807da1d47ac6ed6d642ce23340eb3b3
SSDEEP

12288:lSFYBUZL2VWmqCzDfJMINm1PT3UXjxbqTMnvR:hUZ2VWmFxMIN2TE9eavR

Score

10^/10

latrodectus discovery execution loader

Malware Config

Signatures

Detects Latrodectus 1 IoCs

Detects Latrodectus v1.4.

resource	yara_rule
behavioral2/memory/2244-59-0x000001F7DAE70000-0x000001F7DAE86000-memory.dmp	family_latrodectus_1_4

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

Blocklisted process makes network request 4 IoCs

flow	pid	Process
4	2120	wscript.exe
6	2120	wscript.exe
9	2120	wscript.exe
18	864	msiexec.exe

Executes dropped EXE 1 IoCs

pid	Process
4500	MSIBD99.tmp

Loads dropped DLL 6 IoCs

pid	Process
1184	MsiExec.exe
1184	MsiExec.exe
1184	MsiExec.exe
1184	MsiExec.exe
1716	rundll32.exe
2244	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)	\??\E:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\K:	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)	\??\A:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe

Drops file in Windows directory 10 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\MSIBAB6.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIBC7E.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIBD99.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIB3BF.tmp	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\MSIBBEF.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIBC1F.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\Installer\MSIBCEC.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	MSIBD99.tmp

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
864	msiexec.exe
864	msiexec.exe
4500	MSIBD99.tmp
4500	MSIBD99.tmp

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2120	wscript.exe
Token: SeIncreaseQuotaPrivilege	2120	wscript.exe
Token: SeSecurityPrivilege	864	msiexec.exe
Token: SeCreateTokenPrivilege	2120	wscript.exe
Token: SeAssignPrimaryTokenPrivilege	2120	wscript.exe
Token: SeLockMemoryPrivilege	2120	wscript.exe
Token: SeIncreaseQuotaPrivilege	2120	wscript.exe
Token: SeMachineAccountPrivilege	2120	wscript.exe
Token: SeTcbPrivilege	2120	wscript.exe
Token: SeSecurityPrivilege	2120	wscript.exe
Token: SeTakeOwnershipPrivilege	2120	wscript.exe
Token: SeLoadDriverPrivilege	2120	wscript.exe
Token: SeSystemProfilePrivilege	2120	wscript.exe
Token: SeSystemtimePrivilege	2120	wscript.exe
Token: SeProfSingleProcessPrivilege	2120	wscript.exe
Token: SeIncBasePriorityPrivilege	2120	wscript.exe
Token: SeCreatePagefilePrivilege	2120	wscript.exe
Token: SeCreatePermanentPrivilege	2120	wscript.exe
Token: SeBackupPrivilege	2120	wscript.exe
Token: SeRestorePrivilege	2120	wscript.exe
Token: SeShutdownPrivilege	2120	wscript.exe
Token: SeDebugPrivilege	2120	wscript.exe
Token: SeAuditPrivilege	2120	wscript.exe
Token: SeSystemEnvironmentPrivilege	2120	wscript.exe
Token: SeChangeNotifyPrivilege	2120	wscript.exe
Token: SeRemoteShutdownPrivilege	2120	wscript.exe
Token: SeUndockPrivilege	2120	wscript.exe
Token: SeSyncAgentPrivilege	2120	wscript.exe
Token: SeEnableDelegationPrivilege	2120	wscript.exe
Token: SeManageVolumePrivilege	2120	wscript.exe
Token: SeImpersonatePrivilege	2120	wscript.exe
Token: SeCreateGlobalPrivilege	2120	wscript.exe
Token: SeRestorePrivilege	864	msiexec.exe
Token: SeTakeOwnershipPrivilege	864	msiexec.exe
Token: SeRestorePrivilege	864	msiexec.exe
Token: SeTakeOwnershipPrivilege	864	msiexec.exe
Token: SeRestorePrivilege	864	msiexec.exe
Token: SeTakeOwnershipPrivilege	864	msiexec.exe
Token: SeRestorePrivilege	864	msiexec.exe
Token: SeTakeOwnershipPrivilege	864	msiexec.exe
Token: SeRestorePrivilege	864	msiexec.exe
Token: SeTakeOwnershipPrivilege	864	msiexec.exe
Token: SeRestorePrivilege	864	msiexec.exe
Token: SeTakeOwnershipPrivilege	864	msiexec.exe
Token: SeRestorePrivilege	864	msiexec.exe
Token: SeTakeOwnershipPrivilege	864	msiexec.exe
Token: SeRestorePrivilege	864	msiexec.exe
Token: SeTakeOwnershipPrivilege	864	msiexec.exe
Token: SeRestorePrivilege	864	msiexec.exe
Token: SeTakeOwnershipPrivilege	864	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 864 wrote to memory of 1184	864	msiexec.exe	91
PID 864 wrote to memory of 1184	864	msiexec.exe	91
PID 864 wrote to memory of 1184	864	msiexec.exe	91
PID 864 wrote to memory of 4500	864	msiexec.exe	94
PID 864 wrote to memory of 4500	864	msiexec.exe	94
PID 864 wrote to memory of 4500	864	msiexec.exe	94
PID 1716 wrote to memory of 2244	1716	rundll32.exe	96
PID 1716 wrote to memory of 2244	1716	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\d632551161e59bbc94687fda33925eb227c77f2da0b38a953cbfbffa14f68534.js
1⤵
- Blocklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
PID:2120

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:864
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 8323EC74FEB18C7F7C373FB54F91D954
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1184
- C:\Windows\Installer\MSIBD99.tmp
  "C:\Windows\Installer\MSIBD99.tmp" C:/Windows/System32/rundll32.exe C:\Users\Admin\AppData\Roaming\tz6.dll, NvCreateMPEG4MuxSink
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4500

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\tz6.dll, NvCreateMPEG4MuxSink
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Windows\System32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_55aaa93.dll", NvCreateMPEG4MuxSink
  2⤵
  - Loads dropped DLL
  PID:2244

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\e57bcab.rbs

Filesize
1KB

MD5
1d9671d10282e54fb95c89f3f2f79634

SHA1
79ba7bc74df339ce334290d8eac0e97a933ce2c3

SHA256
15dcd8c555dbf28fd47177b987166ef074b568c5d36ac157ce39edd2ab3daa95

SHA512
4efdb03ca1f9d9d26b30a10ae3ced71273f882d8be5eda5206b8d672012a1799e4a008da2b9941e58f18b40e5ed1e285c0f375efcafaa56a11e31480c606a3d9

Download Submit
C:\Users\Admin\AppData\Roaming\tz6.dll

Filesize
1.1MB

MD5
11bba295ee381161292c384c2eca7a0c

SHA1
2ce64388e396af0c1d96c8544fca6cfee0644f54

SHA256
4dabba4dbabba2b5201fca7e525859946ad860e2693574dc2a6d18348b0c8b95

SHA512
42d926b2a6a4dc99f264a7a38ab951e55f5b126313d8f3250698aca65aea6330030940c91179b29b563c625ddd8f2672ddb7ec3a4f440ffe32dcd3d6cb982f55

Download Submit
C:\Windows\Installer\MSIB3BF.tmp

Filesize
1.6MB

MD5
329259260ebe046b0e80bec91f632ba0

SHA1
db1184c14af32cf859d7f089d1dacc685257cc11

SHA256
334c3f529b1c580ea83e2ea1e85b7a937dcceb3dd3b2a533afb936f53100c222

SHA512
cfa0235623ec962266dbe9bcba5eac4535eff365aa784e6cf4d2a877aa6fedcc0801e5ba751b35ad176997337b72e4141f42ee07faf1017abcfda42b3228b2a4

Download Submit
C:\Windows\Installer\MSIBAB6.tmp

Filesize
436KB

MD5
475d20c0ea477a35660e3f67ecf0a1df

SHA1
67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

SHA256
426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

SHA512
99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

Download Submit
C:\Windows\Installer\MSIBD99.tmp

Filesize
389KB

MD5
b9545ed17695a32face8c3408a6a3553

SHA1
f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

SHA256
1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

SHA512
f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

Download Submit
memory/1716-45-0x0000000180000000-0x0000000180122000-memory.dmp

Filesize
1.1MB

Download
memory/2244-59-0x000001F7DAE70000-0x000001F7DAE86000-memory.dmp

Filesize
88KB

Download