vjw0rm | 741c1ef88d98a8945e91a8d899c93e31d0639ee727d541f0658e8f80136faf39

General

Target

jhfehhyldo.js
Size

207KB
MD5

5e62b21da65c21843765eec3519d08fa
SHA1

be3a7074f1f9bf1065859c200f41389d289c7de5
SHA256

741c1ef88d98a8945e91a8d899c93e31d0639ee727d541f0658e8f80136faf39
SHA512

83d6c6d0f667bd0c9ff7b558f4982a6f18dc33b19ddd4fa48c703bc8ff3948018420c6dab586553588e8a9db8f19bf392486b65c994fa472cf4c209983fff11e

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 18 IoCs

Processes:

WScript.exe

flow	pid	process
6	1068	WScript.exe
7	1068	WScript.exe
8	1068	WScript.exe
10	1068	WScript.exe
11	1068	WScript.exe
12	1068	WScript.exe
14	1068	WScript.exe
15	1068	WScript.exe
16	1068	WScript.exe
18	1068	WScript.exe
19	1068	WScript.exe
20	1068	WScript.exe
22	1068	WScript.exe
23	1068	WScript.exe
24	1068	WScript.exe
26	1068	WScript.exe
27	1068	WScript.exe
28	1068	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\eohMqhWkvF.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eohMqhWkvF.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\\eohMqhWkvF.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

1560 1776 WerFault.exe javaw.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

WerFault.exe

pid process

1560 WerFault.exe
1560 WerFault.exe
1560 WerFault.exe
1560 WerFault.exe
1560 WerFault.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1560 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 1560 WerFault.exe

pid	pid_target	process	target process
1560	1776	WerFault.exe	javaw.exe

pid	process
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe

pid	process
1560	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1560	WerFault.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

wscript.exejavaw.exe

description	pid	process	target process
PID 1992 wrote to memory of 1068	1992	wscript.exe	WScript.exe
PID 1992 wrote to memory of 1068	1992	wscript.exe	WScript.exe
PID 1992 wrote to memory of 1068	1992	wscript.exe	WScript.exe
PID 1992 wrote to memory of 1776	1992	wscript.exe	javaw.exe
PID 1992 wrote to memory of 1776	1992	wscript.exe	javaw.exe
PID 1992 wrote to memory of 1776	1992	wscript.exe	javaw.exe
PID 1776 wrote to memory of 1560	1776	javaw.exe	WerFault.exe
PID 1776 wrote to memory of 1560	1776	javaw.exe	WerFault.exe
PID 1776 wrote to memory of 1560	1776	javaw.exe	WerFault.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\jhfehhyldo.js
1⤵
- Suspicious use of WriteProcessMemory
PID:1992

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\eohMqhWkvF.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1068

C:\Program Files\Java\jre7\bin\javaw.exe
"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\jyedccxqfo.txt"
2⤵
- Suspicious use of WriteProcessMemory
PID:1776

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1776 -s 140
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1560

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\eohMqhWkvF.js
MD5
bd854a8caf7e7c7755481169afebeb9d

SHA1
46d81477627836bdda15137a8837d10eb84bbbfc

SHA256
c346c5553d730a5f500588c0cb604454019e0a9a8c234b09e3050de08c5c4de9

SHA512
5d311fdf3958f117d5b06cb4e975a7bd373a1b9e8379e2df133472bcd30dca710afd382b848bffaf3899cfa1e887f0fe74f019878a24c326a081d15afa73e3e5

Download Submit
C:\Users\Admin\AppData\Roaming\jyedccxqfo.txt
MD5
60822b2d52ae85dd32f95feb662be372

SHA1
3181aeefc4d180403b58245110dd9fe031a5274a

SHA256
9608f3f45074b5797b9b3e62c09480e3f78a1ba4b8550b67ad9287e9311b3e70

SHA512
064f9df2b7515087d3d54ba23a023e4b6ca429d6c1004aac2b2c50abb16561228cb6f3322059afadb47f200580468a2af2f4d053ad04337551f4f9337ce2c969

Download Submit
memory/1068-60-0x0000000000000000-mapping.dmp

Download
memory/1560-65-0x0000000000000000-mapping.dmp

Download
memory/1560-67-0x0000000001D20000-0x0000000001D21000-memory.dmp

Filesize
4KB

Download
memory/1776-62-0x0000000000000000-mapping.dmp

Download
memory/1992-59-0x000007FEFB7B1000-0x000007FEFB7B3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads