vjw0rm | 42f9f906a9e934e2680f95dd68204fef725c9827148bef6549581a542804062d

Analysis

max time kernel
149s
max time network
164s
platform
windows10_x64
resource
win10v20210408
submitted
06-09-2021 12:31

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General

Target

lqxlQsUjTm_ee dropper 2.js
Size

27KB
MD5

3bd9840766e032536ab43c4f67b61a68
SHA1

10fcf2f0180c44c9b1fdd966b7e35658fce7fc11
SHA256

42f9f906a9e934e2680f95dd68204fef725c9827148bef6549581a542804062d
SHA512

1cd2b4a23ae9288f6ea758636bb80f65a8b37656754997f7b28c13c13dd60fde9e457d8c94c931ad4c9017bde8cbaa9142c2c2f287e76678f807386e7ee0056d

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 21 IoCs

Processes:

wscript.exewscript.exe

flow	pid	process
8	492	wscript.exe
15	492	wscript.exe
18	492	wscript.exe
19	492	wscript.exe
20	492	wscript.exe
21	492	wscript.exe
22	492	wscript.exe
24	992	wscript.exe
26	992	wscript.exe
27	492	wscript.exe
28	492	wscript.exe
29	492	wscript.exe
30	492	wscript.exe
31	492	wscript.exe
32	492	wscript.exe
33	492	wscript.exe
34	492	wscript.exe
35	492	wscript.exe
36	492	wscript.exe
37	492	wscript.exe
38	492	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\eDiHmfNYxg.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eDiHmfNYxg.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-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\eDiHmfNYxg.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 2 IoCs

Processes:

wscript.exe

description pid process target process

PID 992 wrote to memory of 492 992 wscript.exe wscript.exe
PID 992 wrote to memory of 492 992 wscript.exe wscript.exe

description	pid	process	target process
PID 992 wrote to memory of 492	992	wscript.exe	wscript.exe
PID 992 wrote to memory of 492	992	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\lqxlQsUjTm_ee dropper 2.js"
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:992

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\eDiHmfNYxg.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:492

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\eDiHmfNYxg.js

MD5
d7e5462c55ac8273386ec5bba1715087

SHA1
c2cb83079f6df06bf989c567381520ff5e53f4d1

SHA256
6645dbe635a1f10e0f05bbebf2d58247f47e1719833a251311a67d3a5c64e2da

SHA512
f8bc2e5c86322f472472fff55d5014939641d5850b4b6ce69993b50dbf219dc408a56e840ad6f79de1cdbad8eb5df2642b53aae02cc3fd574e5563e8af43685e

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memory/492-114-0x0000000000000000-mapping.dmp

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