vjw0rm | 620dc49a27f1b29f098632a2ab0f9518d6f7ba7da3972517f15de23f099349be

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
02-11-2022 15:13

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General

Target

620dc49a27f1b29f098632a2ab0f9518d6f7ba7da3972517f15de23f099349be.js
Size

31KB
MD5

c8fad3b2ff2cb292c8ad0c60659b415e
SHA1

068a4c69edbbbd87ad93808b963a2ea1eca18fcc
SHA256

620dc49a27f1b29f098632a2ab0f9518d6f7ba7da3972517f15de23f099349be
SHA512

8363e44ded7bc2d328f6363c9471a67eb5da2a149492e2838fd60758f40bc8474ab7b4b467608f3a0ef9c6fca8d9b6299416c294b945ce18160f2a0246e2bb11
SSDEEP

384:+HGAPmVP9XLL8ouHBIZGO1ZQ8VbRFKLbk5A3ClocSOa1c5h6NMvtzvG31Mxt0vEQ:1APmVPhHw4bZ3RF3ecocSV1Mxt0vmVK

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 23 IoCs

flow	pid	Process
7	4868	wscript.exe
8	2548	wscript.exe
19	2548	wscript.exe
26	2548	wscript.exe
28	2548	wscript.exe
29	4868	wscript.exe
32	2548	wscript.exe
36	2548	wscript.exe
49	2548	wscript.exe
50	4868	wscript.exe
54	2548	wscript.exe
68	2548	wscript.exe
69	2548	wscript.exe
70	4868	wscript.exe
71	2548	wscript.exe
72	2548	wscript.exe
74	2548	wscript.exe
75	4868	wscript.exe
76	2548	wscript.exe
77	2548	wscript.exe
78	2548	wscript.exe
79	4868	wscript.exe
80	2548	wscript.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\620dc49a27f1b29f098632a2ab0f9518d6f7ba7da3972517f15de23f099349be.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XFKhSFlYWb.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XFKhSFlYWb.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\UQX1UJ38X1 = "\"C:\\Users\\Admin\\AppData\\Roaming\\620dc49a27f1b29f098632a2ab0f9518d6f7ba7da3972517f15de23f099349be.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

description	pid	Process	procid_target
PID 2548 wrote to memory of 4868	2548	wscript.exe	82
PID 2548 wrote to memory of 4868	2548	wscript.exe	82

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\620dc49a27f1b29f098632a2ab0f9518d6f7ba7da3972517f15de23f099349be.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\XFKhSFlYWb.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:4868

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
10KB

MD5
18aa18aca1d624556d87fd1c3c8dfc4a

SHA1
45509a074cd5f5d11d507a7fe0bcb733f874e90d

SHA256
27765e27d897d45fb5cc093197a65545ed4a120130e12cc88e70f41e68788036

SHA512
80e7fcc1551290772a960b76445999f85f5cbef24cf2b860c7d8e0e7ea1a2a284e8b120a203947c2e8f2cdff13193095c00922e6f7e7cc94069e8846bad4554a

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