vjw0rm | 14994ee0d2b1c8054ca1da121d95216f77f0134f3bfcfe784d5936e2c56a7861

General

Target

6485c6a9_QPkejMArvg.js
Size

916KB
MD5

6485c6a9c05b1d3d6e8891e23aa04ea1
SHA1

8114f6eada4952929cccf89507685656048bbc95
SHA256

14994ee0d2b1c8054ca1da121d95216f77f0134f3bfcfe784d5936e2c56a7861
SHA512

bcf7fc0e3d515c8e4d52c8df14b847a8bfbf8562f022e18cffcec040406befd8345d9c77944d5a8c5631527ce788ed2bfb1eda50e4fb4216998b933ab805059d

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
10	3420	WScript.exe
17	3420	WScript.exe
20	3420	WScript.exe
22	3420	WScript.exe
23	3420	WScript.exe
24	3420	WScript.exe
25	3420	WScript.exe
26	3420	WScript.exe
27	3420	WScript.exe
28	3420	WScript.exe
29	3420	WScript.exe
30	3420	WScript.exe
31	3420	WScript.exe
32	3420	WScript.exe
33	3420	WScript.exe
34	3420	WScript.exe
35	3420	WScript.exe
36	3420	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\vrISCkwbMp.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vrISCkwbMp.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-1-5-21-2559286294-2439613352-4032193287-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\vrISCkwbMp.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

4008 4052 WerFault.exe javaw.exe
Modifies registry class 1 IoCs

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings wscript.exe

pid	pid_target	process	target process
4008	4052	WerFault.exe	javaw.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings	wscript.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

WerFault.exe

pid	process
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe
4008	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 4008 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	4008	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 4560 wrote to memory of 3420	4560	wscript.exe	WScript.exe
PID 4560 wrote to memory of 3420	4560	wscript.exe	WScript.exe
PID 4560 wrote to memory of 4052	4560	wscript.exe	javaw.exe
PID 4560 wrote to memory of 4052	4560	wscript.exe	javaw.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\6485c6a9_QPkejMArvg.js
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4560

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\vrISCkwbMp.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:3420

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\krazp.txt"
2⤵
PID:4052

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 4052 -s 360
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4008

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\krazp.txt

MD5
3f3a80069062e2087b84f3631060069c

SHA1
e764fb34289f72c223c4ee898a6b27493cc9c66d

SHA256
d1c53cc7ae6293414dbfadcbf23171813edb9e8a0c04fd3fe034578f387bb579

SHA512
f18e120f2c398a29f4e13c29c0b74b87d9910a931e91c885f0a5d7bf93a8f3babae82c4fd93f683f4439fa399d94c863c3f396d2fbd0f1f2a62a8f035f8ba8a5

Download Submit
C:\Users\Admin\AppData\Roaming\vrISCkwbMp.js

MD5
5d949e9cb3fe0c07d943627b091e4e52

SHA1
88398ccb45865aaab77be3bf08ec132629c90405

SHA256
7dc35f825ed77811a232c819a8618299f5f43521af7e3658051acc7df3a91c4d

SHA512
be2890466b4270999b38bcfaf7d6fa28e58c6883fc627f5297d3c7e6eeac23b403f095284aceabb6463f323387209397ddc4eabdc4a322f4cb8d3ce422ff73f8

Download Submit
memory/3420-115-0x0000000000000000-mapping.dmp

Download
memory/4052-117-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads