vjw0rm | 7a2fd40a032e726bde8638b079963c499d20c7c197a0f91544f458977fbd3304

General

Target

SKM_C258201001130020005057.js
Size

469KB
MD5

8fed7262f75ec7c978a03e8177dfadab
SHA1

3c95b2b69114082581b28a34533cbcddefd72516
SHA256

7a2fd40a032e726bde8638b079963c499d20c7c197a0f91544f458977fbd3304
SHA512

22a2ca24da0dd5d7a665d84fc58cc36013716d4605518f3c035d0bc5e6944825267e332708eb26623cba4e2d7b57b395caab6c5628b9e88f510fb23a8871e9f2

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 16 IoCs

Processes:

WScript.exe

flow	pid	process
8	4848	WScript.exe
19	4848	WScript.exe
20	4848	WScript.exe
21	4848	WScript.exe
22	4848	WScript.exe
23	4848	WScript.exe
24	4848	WScript.exe
25	4848	WScript.exe
26	4848	WScript.exe
27	4848	WScript.exe
28	4848	WScript.exe
29	4848	WScript.exe
30	4848	WScript.exe
31	4848	WScript.exe
32	4848	WScript.exe
33	4848	WScript.exe

Drops startup file 2 IoCs

Processes:

WScript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\kgjBVaIrAu.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\kgjBVaIrAu.js	WScript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

WScript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\0HKX5ALWLG = "\"C:\\Users\\Admin\\AppData\\Roaming\\kgjBVaIrAu.js\""	WScript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

5040 4920 WerFault.exe javaw.exe
Modifies registry class 1 IoCs

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings wscript.exe

pid	pid_target	process	target process
5040	4920	WerFault.exe	javaw.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings	wscript.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

WerFault.exe

pid	process
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe
5040	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 5040 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	5040	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 4444 wrote to memory of 4848	4444	wscript.exe	WScript.exe
PID 4444 wrote to memory of 4848	4444	wscript.exe	WScript.exe
PID 4444 wrote to memory of 4920	4444	wscript.exe	javaw.exe
PID 4444 wrote to memory of 4920	4444	wscript.exe	javaw.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\SKM_C258201001130020005057.js
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4444

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\kgjBVaIrAu.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4848

C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe
"C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\wccldmjkia.txt"
2⤵
PID:4920

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 4920 -s 360
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5040

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\kgjBVaIrAu.js
MD5
f74ee95cc8fbe51c705384a7dcc5a701

SHA1
b15a636ca2ce2f45dd466e5ee463f1cfed9fd64b

SHA256
a86309235858dbc9f91f1a8405a3599a70f2394b7671889c9f6a1b05831c3407

SHA512
e68783102258f983e31d4ffd7f4b532957072207dad9b892f388924d17e8909ac21cb59d823cd3dcedb066f69ac9053c8992cc40204f86798932eef2179d3ad6

Download Submit
C:\Users\Admin\AppData\Roaming\wccldmjkia.txt
MD5
e38670aa13e73105b5b518779c4983df

SHA1
dbed21eea88ad1574999e3db2b6d7eb19b5a2979

SHA256
e0141d12da8d9172a5ea7bad725a5f0c4a766473b914d1f6b2b1485a7eeadf8f

SHA512
f2fa507968f7c817ca55001215610a39cebd35ab76696593f87efc7f504572e2da3cdf5355c80cb420eb767dee950b5a7b71f83ba898ac08ac11f6be099c397e

Download Submit
memory/4848-114-0x0000000000000000-mapping.dmp

Download
memory/4920-116-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads