vjw0rm | d5fd83a507b0f9384bc408819389cd9e23c89b55a0edb6857673fba8113e2159

General

Target

55397525_5YNqJoqHFn.js
Size

231KB
MD5

553975254beafdaab9f69011980b9569
SHA1

b549e749a1991bf12145a20c1f968c07a1645822
SHA256

d5fd83a507b0f9384bc408819389cd9e23c89b55a0edb6857673fba8113e2159
SHA512

ffebe27b3a746439698958852c8e1714813c54744fecad790877583347d54413b3adc60347dbb084a6ea52c9d3902333e688cc0b8e556eb8c545d08543f48112

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 17 IoCs

Processes:

WScript.exe

flow	pid	process
7	1704	WScript.exe
8	1704	WScript.exe
9	1704	WScript.exe
11	1704	WScript.exe
12	1704	WScript.exe
13	1704	WScript.exe
15	1704	WScript.exe
16	1704	WScript.exe
17	1704	WScript.exe
19	1704	WScript.exe
20	1704	WScript.exe
21	1704	WScript.exe
23	1704	WScript.exe
24	1704	WScript.exe
25	1704	WScript.exe
27	1704	WScript.exe
28	1704	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\dCXvAMFTAC.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dCXvAMFTAC.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-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\dCXvAMFTAC.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

1640 1664 WerFault.exe javaw.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

WerFault.exe

pid process

1640 WerFault.exe
1640 WerFault.exe
1640 WerFault.exe
1640 WerFault.exe
1640 WerFault.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1640 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 1640 WerFault.exe

pid	pid_target	process	target process
1640	1664	WerFault.exe	javaw.exe

pid	process
1640	WerFault.exe
1640	WerFault.exe
1640	WerFault.exe
1640	WerFault.exe
1640	WerFault.exe

pid	process
1640	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1640	WerFault.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

wscript.exejavaw.exe

description	pid	process	target process
PID 1076 wrote to memory of 1704	1076	wscript.exe	WScript.exe
PID 1076 wrote to memory of 1704	1076	wscript.exe	WScript.exe
PID 1076 wrote to memory of 1704	1076	wscript.exe	WScript.exe
PID 1076 wrote to memory of 1664	1076	wscript.exe	javaw.exe
PID 1076 wrote to memory of 1664	1076	wscript.exe	javaw.exe
PID 1076 wrote to memory of 1664	1076	wscript.exe	javaw.exe
PID 1664 wrote to memory of 1640	1664	javaw.exe	WerFault.exe
PID 1664 wrote to memory of 1640	1664	javaw.exe	WerFault.exe
PID 1664 wrote to memory of 1640	1664	javaw.exe	WerFault.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\55397525_5YNqJoqHFn.js
1⤵
- Suspicious use of WriteProcessMemory
PID:1076

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\dCXvAMFTAC.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1704

C:\Program Files\Java\jre7\bin\javaw.exe
"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\seghtwmym.txt"
2⤵
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1664 -s 140
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1640

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\dCXvAMFTAC.js

MD5
bc151eedb995b062c850ec907d92c2e0

SHA1
2500517c7912737a59f3946fabbb506c6f294682

SHA256
59c024a2c7a05e9ec38e3658822a498de263e72535fa602bc16e05d77dc3cec0

SHA512
a6dece2d1f59469a0f1a474ac310a98a511571600158179151a9b0bdb583081b99f46c72e9644250a7864879d7bb67cd9843154a2fa3b7654a5c44420eccee49

Download Submit
C:\Users\Admin\AppData\Roaming\seghtwmym.txt

MD5
d1abdb24c44f1ec93c4800f3128cf01f

SHA1
765a23589063a01d8c3e0b4e5615ac5d0ac475a6

SHA256
15ddd12f95653df0799fc8420b8d5d73361d3fd9a97237da094f4440ba108580

SHA512
659310fb4e2750cbb87ead008ffda551c6ce3296690c8747231b21ce8543961cecfbefb2c1cb9ba41f6fe87c60cd4f312549b1eab6039337514e2c18b529887f

Download Submit
memory/1076-52-0x000007FEFB951000-0x000007FEFB953000-memory.dmp

Filesize
8KB

Download
memory/1640-58-0x0000000000000000-mapping.dmp

Download
memory/1640-60-0x00000000001A0000-0x00000000001A1000-memory.dmp

Filesize
4KB

Download
memory/1664-55-0x0000000000000000-mapping.dmp

Download
memory/1704-53-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads