latrodectus | d632551161e59bbc94687fda33925eb227c77f2da0b38a953cbfbffa14f68534

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-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
behavioral1/memory/2820-154-0x00000000001B0000-0x00000000001C6000-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	2168	wscript.exe
5	2168	wscript.exe
8	2188	msiexec.exe

Executes dropped EXE 1 IoCs

pid	Process
1684	MSIF2BE.tmp

Loads dropped DLL 11 IoCs

pid	Process
1660	MsiExec.exe
1660	MsiExec.exe
1660	MsiExec.exe
2500	rundll32.exe
2500	rundll32.exe
2500	rundll32.exe
2500	rundll32.exe
2820	rundll32.exe
2820	rundll32.exe
2820	rundll32.exe
2820	rundll32.exe

Enumerates connected drives 3 TTPs 46 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)	\??\B:	wscript.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\K:	wscript.exe
File opened (read-only)	\??\N:	wscript.exe
File opened (read-only)	\??\P:	wscript.exe
File opened (read-only)	\??\T:	wscript.exe
File opened (read-only)	\??\Y:	wscript.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\E:	wscript.exe
File opened (read-only)	\??\Q:	wscript.exe
File opened (read-only)	\??\S:	wscript.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\A:	wscript.exe
File opened (read-only)	\??\H:	wscript.exe
File opened (read-only)	\??\I:	wscript.exe
File opened (read-only)	\??\J:	wscript.exe
File opened (read-only)	\??\V:	wscript.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\W:	wscript.exe
File opened (read-only)	\??\O:	wscript.exe
File opened (read-only)	\??\R:	wscript.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\G:	wscript.exe
File opened (read-only)	\??\U:	wscript.exe
File opened (read-only)	\??\Z:	wscript.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\L:	wscript.exe
File opened (read-only)	\??\M:	wscript.exe
File opened (read-only)	\??\X:	wscript.exe

Drops file in Windows directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\MSIF2BE.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\f76f1ef.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSID0E6.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIF1C1.tmp	msiexec.exe
File created	C:\Windows\Installer\f76f1ef.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIF28D.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIF114.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIF192.tmp	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	MSIF2BE.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 3 IoCs

pid	Process
2188	msiexec.exe
2188	msiexec.exe
1684	MSIF2BE.tmp

Suspicious use of AdjustPrivilegeToken 52 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2168	wscript.exe
Token: SeIncreaseQuotaPrivilege	2168	wscript.exe
Token: SeRestorePrivilege	2188	msiexec.exe
Token: SeTakeOwnershipPrivilege	2188	msiexec.exe
Token: SeSecurityPrivilege	2188	msiexec.exe
Token: SeCreateTokenPrivilege	2168	wscript.exe
Token: SeAssignPrimaryTokenPrivilege	2168	wscript.exe
Token: SeLockMemoryPrivilege	2168	wscript.exe
Token: SeIncreaseQuotaPrivilege	2168	wscript.exe
Token: SeMachineAccountPrivilege	2168	wscript.exe
Token: SeTcbPrivilege	2168	wscript.exe
Token: SeSecurityPrivilege	2168	wscript.exe
Token: SeTakeOwnershipPrivilege	2168	wscript.exe
Token: SeLoadDriverPrivilege	2168	wscript.exe
Token: SeSystemProfilePrivilege	2168	wscript.exe
Token: SeSystemtimePrivilege	2168	wscript.exe
Token: SeProfSingleProcessPrivilege	2168	wscript.exe
Token: SeIncBasePriorityPrivilege	2168	wscript.exe
Token: SeCreatePagefilePrivilege	2168	wscript.exe
Token: SeCreatePermanentPrivilege	2168	wscript.exe
Token: SeBackupPrivilege	2168	wscript.exe
Token: SeRestorePrivilege	2168	wscript.exe
Token: SeShutdownPrivilege	2168	wscript.exe
Token: SeDebugPrivilege	2168	wscript.exe
Token: SeAuditPrivilege	2168	wscript.exe
Token: SeSystemEnvironmentPrivilege	2168	wscript.exe
Token: SeChangeNotifyPrivilege	2168	wscript.exe
Token: SeRemoteShutdownPrivilege	2168	wscript.exe
Token: SeUndockPrivilege	2168	wscript.exe
Token: SeSyncAgentPrivilege	2168	wscript.exe
Token: SeEnableDelegationPrivilege	2168	wscript.exe
Token: SeManageVolumePrivilege	2168	wscript.exe
Token: SeImpersonatePrivilege	2168	wscript.exe
Token: SeCreateGlobalPrivilege	2168	wscript.exe
Token: SeRestorePrivilege	2188	msiexec.exe
Token: SeTakeOwnershipPrivilege	2188	msiexec.exe
Token: SeRestorePrivilege	2188	msiexec.exe
Token: SeTakeOwnershipPrivilege	2188	msiexec.exe
Token: SeRestorePrivilege	2188	msiexec.exe
Token: SeTakeOwnershipPrivilege	2188	msiexec.exe
Token: SeRestorePrivilege	2188	msiexec.exe
Token: SeTakeOwnershipPrivilege	2188	msiexec.exe
Token: SeRestorePrivilege	2188	msiexec.exe
Token: SeTakeOwnershipPrivilege	2188	msiexec.exe
Token: SeRestorePrivilege	2188	msiexec.exe
Token: SeTakeOwnershipPrivilege	2188	msiexec.exe
Token: SeRestorePrivilege	2188	msiexec.exe
Token: SeTakeOwnershipPrivilege	2188	msiexec.exe
Token: SeRestorePrivilege	2188	msiexec.exe
Token: SeTakeOwnershipPrivilege	2188	msiexec.exe
Token: SeRestorePrivilege	2188	msiexec.exe
Token: SeTakeOwnershipPrivilege	2188	msiexec.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 1660	2188	msiexec.exe	32
PID 2188 wrote to memory of 1660	2188	msiexec.exe	32
PID 2188 wrote to memory of 1660	2188	msiexec.exe	32
PID 2188 wrote to memory of 1660	2188	msiexec.exe	32
PID 2188 wrote to memory of 1660	2188	msiexec.exe	32
PID 2188 wrote to memory of 1660	2188	msiexec.exe	32
PID 2188 wrote to memory of 1660	2188	msiexec.exe	32
PID 2188 wrote to memory of 1684	2188	msiexec.exe	33
PID 2188 wrote to memory of 1684	2188	msiexec.exe	33
PID 2188 wrote to memory of 1684	2188	msiexec.exe	33
PID 2188 wrote to memory of 1684	2188	msiexec.exe	33
PID 2188 wrote to memory of 1684	2188	msiexec.exe	33
PID 2188 wrote to memory of 1684	2188	msiexec.exe	33
PID 2188 wrote to memory of 1684	2188	msiexec.exe	33
PID 2500 wrote to memory of 2820	2500	rundll32.exe	35
PID 2500 wrote to memory of 2820	2500	rundll32.exe	35
PID 2500 wrote to memory of 2820	2500	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\d632551161e59bbc94687fda33925eb227c77f2da0b38a953cbfbffa14f68534.js
1⤵
- Blocklisted process makes network request
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
PID:2168

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:2188
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding F3293420DFE159710E17A3B257DDD75C
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1660
- C:\Windows\Installer\MSIF2BE.tmp
  "C:\Windows\Installer\MSIF2BE.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:1684

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:2500
- C:\Windows\System32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_3e4eb662.dll", NvCreateMPEG4MuxSink
  2⤵
  - Loads dropped DLL
  PID:2820

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:\Users\Admin\AppData\Local\Temp\CabC1FA.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarC2F6.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

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\MSID0E6.tmp

Filesize
1.6MB

MD5
329259260ebe046b0e80bec91f632ba0

SHA1
db1184c14af32cf859d7f089d1dacc685257cc11

SHA256
334c3f529b1c580ea83e2ea1e85b7a937dcceb3dd3b2a533afb936f53100c222

SHA512
cfa0235623ec962266dbe9bcba5eac4535eff365aa784e6cf4d2a877aa6fedcc0801e5ba751b35ad176997337b72e4141f42ee07faf1017abcfda42b3228b2a4

Download Submit
C:\Windows\Installer\MSIF114.tmp

Filesize
436KB

MD5
475d20c0ea477a35660e3f67ecf0a1df

SHA1
67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

SHA256
426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

SHA512
99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

Download Submit
C:\Windows\Installer\MSIF2BE.tmp

Filesize
389KB

MD5
b9545ed17695a32face8c3408a6a3553

SHA1
f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

SHA256
1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

SHA512
f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

Download Submit
memory/1684-130-0x00000000000B0000-0x00000000000B2000-memory.dmp

Filesize
8KB

Download
memory/2500-137-0x0000000180000000-0x0000000180122000-memory.dmp

Filesize
1.1MB

Download
memory/2820-154-0x00000000001B0000-0x00000000001C6000-memory.dmp

Filesize
88KB

Download