vjw0rm | 9285fa6ba7f6cb35a4371d51a11f7c5c7aa582cb1deec294aff20ec5060b0a2d

General

Target

_[output].js
Size

201KB
MD5

235c68f406aa41b7e1a87e35d83add4c
SHA1

dadb5bd81a34b437863e3d744ea0a06c48533b39
SHA256

9285fa6ba7f6cb35a4371d51a11f7c5c7aa582cb1deec294aff20ec5060b0a2d
SHA512

158661fdbd3c48fb3f3dba455833553e0c3c1c64d4007262515a689f755f5b752b34f7ead147834852445f60328e3d66b0ea44bfa79372f1667ea14297fa7d1a

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
7	1900	WScript.exe
8	1900	WScript.exe
9	1900	WScript.exe
11	1900	WScript.exe
12	1900	WScript.exe
13	1900	WScript.exe
15	1900	WScript.exe
16	1900	WScript.exe
17	1900	WScript.exe
19	1900	WScript.exe
20	1900	WScript.exe
21	1900	WScript.exe
23	1900	WScript.exe
24	1900	WScript.exe
25	1900	WScript.exe
27	1900	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\ruYArSxXtj.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ruYArSxXtj.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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\ruYArSxXtj.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

1908 1708 WerFault.exe javaw.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

WerFault.exe

pid process

1908 WerFault.exe
1908 WerFault.exe
1908 WerFault.exe
1908 WerFault.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1908 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 1908 WerFault.exe

pid	pid_target	process	target process
1908	1708	WerFault.exe	javaw.exe

pid	process
1908	WerFault.exe
1908	WerFault.exe
1908	WerFault.exe
1908	WerFault.exe

pid	process
1908	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1908	WerFault.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

wscript.exejavaw.exe

description	pid	process	target process
PID 1976 wrote to memory of 1900	1976	wscript.exe	WScript.exe
PID 1976 wrote to memory of 1900	1976	wscript.exe	WScript.exe
PID 1976 wrote to memory of 1900	1976	wscript.exe	WScript.exe
PID 1976 wrote to memory of 1708	1976	wscript.exe	javaw.exe
PID 1976 wrote to memory of 1708	1976	wscript.exe	javaw.exe
PID 1976 wrote to memory of 1708	1976	wscript.exe	javaw.exe
PID 1708 wrote to memory of 1908	1708	javaw.exe	WerFault.exe
PID 1708 wrote to memory of 1908	1708	javaw.exe	WerFault.exe
PID 1708 wrote to memory of 1908	1708	javaw.exe	WerFault.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\_[output].js
1⤵
- Suspicious use of WriteProcessMemory
PID:1976

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\ruYArSxXtj.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1900

C:\Program Files\Java\jre7\bin\javaw.exe
"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\rwzzluutmx.txt"
2⤵
- Suspicious use of WriteProcessMemory
PID:1708

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1708 -s 140
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1908

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\ruYArSxXtj.js
MD5
ca4e11b0bbf70a587e0d653bfceded8c

SHA1
c70eeac3273988740e937e21e11948b003295582

SHA256
d0a3dc9322f9f6f9028f437d45757560de849fd0a0a6dcf8c92beed012b61e0d

SHA512
291bbeb73d3ecacfe5c50aa9fd59f0542eea4950a82d0def79318017d5a0c9bcd3792a49c17309414c7678235ffeae284f29643e2be4b4a368592c0f5f64bdf0

Download Submit
C:\Users\Admin\AppData\Roaming\rwzzluutmx.txt
MD5
ae4f924072e8dd90687607e7becdde2e

SHA1
225d2c7cf6506bf59d865fe3dba1b6c1736d492b

SHA256
915de15ccb287c58270e6bc23523b0cde9ce077dbc0fef517faca1a1a0313286

SHA512
14da1de2af981af4390e3bb95e29f968f0ef67af011202ce9f598e9f553f822e37013301c965f871ad2660cc451fb7c1ad619bf9533405e7424ad88f199803f0

Download Submit
memory/1708-63-0x0000000000000000-mapping.dmp

Download
memory/1900-61-0x0000000000000000-mapping.dmp

Download
memory/1908-66-0x0000000000000000-mapping.dmp

Download
memory/1908-68-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/1976-60-0x000007FEFC1D1000-0x000007FEFC1D3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads