vjw0rm | be9f6db4ab45c053b4abed96b5c9f6729603831bb0087229af68417a5b6414b8

Analysis

max time kernel
162s
max time network
206s
platform
windows7_x64
resource
win7v20210408
submitted
30-08-2021 06:14

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General

Target

CSBM_Invoice-m567.js
Size

23KB
MD5

ef55fb87afa217b3e8852fba9f6254a4
SHA1

8bbcf900a8bffc595c56d02f5cc6bf156e48900e
SHA256

be9f6db4ab45c053b4abed96b5c9f6729603831bb0087229af68417a5b6414b8
SHA512

491c96096b48a8fd164ff9761914a62043175ccfaebdf545b868492e8f78ca12a0a59cc04f78f4ab2a384091aae8d16c5dc4f392edb18e832c0716ae1e336cb2

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 19 IoCs

Processes:

wscript.exewscript.exe

flow	pid	process
7	1328	wscript.exe
11	1668	wscript.exe
12	1328	wscript.exe
13	1328	wscript.exe
14	1328	wscript.exe
16	1668	wscript.exe
18	1668	wscript.exe
21	1668	wscript.exe
22	1668	wscript.exe
25	1668	wscript.exe
28	1668	wscript.exe
30	1668	wscript.exe
31	1668	wscript.exe
34	1668	wscript.exe
37	1668	wscript.exe
39	1668	wscript.exe
42	1668	wscript.exe
44	1668	wscript.exe
46	1668	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

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

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1328 wrote to memory of 1668	1328	wscript.exe	wscript.exe
PID 1328 wrote to memory of 1668	1328	wscript.exe	wscript.exe
PID 1328 wrote to memory of 1668	1328	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\CSBM_Invoice-m567.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1328

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\OTzyMlFsEE.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1668

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\OTzyMlFsEE.js
MD5
f6f3498b20a2bcf3e8936ff1157ccd25

SHA1
2933a45dcd0d39b926f0dadf65b2d8003288b488

SHA256
24976e6f497b871e0697069df4bc110b4c2bd246d85934b9debfa9ce7a200f5b

SHA512
1d1a11f84c9c72d87d98c3ac931b848dd8684ac91bb47d9199942544cfbc0fd94ed08c5e8fd8e54bbb3e6065f6e934023d3793697b0e7113ac5902e8ce1dad70

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memory/1668-60-0x0000000000000000-mapping.dmp

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