vjw0rm | 94e303522613e9d7826ae18fcc1a124b0293f21c4a44dc0da59e9ef50697fb5e

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
29-03-2023 11:10

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General

Target

1.js
Size

4.5MB
MD5

9cf2c793029ae8dd84a387ba66e8c432
SHA1

48f6d8e5c4f55434a3d1fdc1531bd37fb6248d10
SHA256

d76d9fa7fa75a31b2a62804c8925a1c352f407831865bebc005b7f01676b5ac9
SHA512

33dd2fbc290c8feb31570e200f469729d5385e3f214edb4299b47bd841a0cd24a9ea211808e6c58cef63a812b27558852dbed2daf0cfac8953b3d028fd019848
SSDEEP

24576:8NLb0+2xYFsLoDw9svltZ7r55HNYYkY4WOxbZQCgvRo5PD1rMLSeGU0pOlBY9Pcw:3ueQa

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 39 IoCs

flow	pid	Process
14	4892	wscript.exe
16	1576	wscript.exe
17	4840	wscript.exe
19	4840	wscript.exe
23	4892	wscript.exe
28	1576	wscript.exe
30	4892	wscript.exe
31	1576	wscript.exe
33	4892	wscript.exe
34	4840	wscript.exe
35	1576	wscript.exe
37	4892	wscript.exe
38	1576	wscript.exe
40	4892	wscript.exe
44	1576	wscript.exe
45	4840	wscript.exe
49	4892	wscript.exe
52	1576	wscript.exe
53	4892	wscript.exe
57	1576	wscript.exe
58	4892	wscript.exe
59	1576	wscript.exe
60	4840	wscript.exe
61	4892	wscript.exe
62	1576	wscript.exe
64	4892	wscript.exe
65	1576	wscript.exe
66	4892	wscript.exe
67	1576	wscript.exe
68	4840	wscript.exe
70	4892	wscript.exe
71	1576	wscript.exe
72	4892	wscript.exe
73	1576	wscript.exe
75	4892	wscript.exe
76	4840	wscript.exe
77	1576	wscript.exe
78	4892	wscript.exe
79	1576	wscript.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 5 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xQgwkAjhRq.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xQgwkAjhRq.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xQgwkAjhRq.js	wscript.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\1.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\1.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\1.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\1.js\""	wscript.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
15	ip-api.com

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 6 IoCs

description	pid	Process	procid_target
PID 3832 wrote to memory of 4892	3832	wscript.exe	84
PID 3832 wrote to memory of 4892	3832	wscript.exe	84
PID 3832 wrote to memory of 4840	3832	wscript.exe	85
PID 3832 wrote to memory of 4840	3832	wscript.exe	85
PID 4840 wrote to memory of 1576	4840	wscript.exe	88
PID 4840 wrote to memory of 1576	4840	wscript.exe	88

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\1.js
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3832
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\xQgwkAjhRq.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:4892
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\1.js"
  2⤵
  - Blocklisted process makes network request
  - Checks computer location settings
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4840
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\xQgwkAjhRq.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    PID:1576

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

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Downloads

C:\Users\Admin\AppData\Roaming\1.js

Filesize
4.5MB

MD5
9cf2c793029ae8dd84a387ba66e8c432

SHA1
48f6d8e5c4f55434a3d1fdc1531bd37fb6248d10

SHA256
d76d9fa7fa75a31b2a62804c8925a1c352f407831865bebc005b7f01676b5ac9

SHA512
33dd2fbc290c8feb31570e200f469729d5385e3f214edb4299b47bd841a0cd24a9ea211808e6c58cef63a812b27558852dbed2daf0cfac8953b3d028fd019848

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.js

Filesize
4.5MB

MD5
6940bc4c71745beab1c58afc5d5a6ca0

SHA1
f5b970ed0dbbc634223278553050b93a259ec4f3

SHA256
eb95daf1da540e3171caeac9d282b88e336123744f94948593a64adceea0db06

SHA512
15d0bf86ec848259b41398f9ecfa03f1b0edac2badf9a71873f758af075512f95c3f1fc813835dc7cee6f6214a40a0a382be79fafbffce74359b4f0892e2c8eb

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.js

Filesize
4.5MB

MD5
9cf2c793029ae8dd84a387ba66e8c432

SHA1
48f6d8e5c4f55434a3d1fdc1531bd37fb6248d10

SHA256
d76d9fa7fa75a31b2a62804c8925a1c352f407831865bebc005b7f01676b5ac9

SHA512
33dd2fbc290c8feb31570e200f469729d5385e3f214edb4299b47bd841a0cd24a9ea211808e6c58cef63a812b27558852dbed2daf0cfac8953b3d028fd019848

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xQgwkAjhRq.js

Filesize
346KB

MD5
0fbcb6f83b0f64e57835d021bb6e917d

SHA1
0fa656e1cf06a0ea20e19a4ddd951f0d0d05dc38

SHA256
c518c547d809de7ccae1259611bcb52d6fa435cff67c910d25c5b961ddc45466

SHA512
70f322596a2ba8e079d39d35a10e771f8269dc08e03713736ba070f6cf34cf9bbcb9ac1065a66ad0a0afb66ad68e000953e593164d8858224ce1aeb4cde5120f

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

Filesize
346KB

MD5
0fbcb6f83b0f64e57835d021bb6e917d

SHA1
0fa656e1cf06a0ea20e19a4ddd951f0d0d05dc38

SHA256
c518c547d809de7ccae1259611bcb52d6fa435cff67c910d25c5b961ddc45466

SHA512
70f322596a2ba8e079d39d35a10e771f8269dc08e03713736ba070f6cf34cf9bbcb9ac1065a66ad0a0afb66ad68e000953e593164d8858224ce1aeb4cde5120f

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

Filesize
346KB

MD5
0fbcb6f83b0f64e57835d021bb6e917d

SHA1
0fa656e1cf06a0ea20e19a4ddd951f0d0d05dc38

SHA256
c518c547d809de7ccae1259611bcb52d6fa435cff67c910d25c5b961ddc45466

SHA512
70f322596a2ba8e079d39d35a10e771f8269dc08e03713736ba070f6cf34cf9bbcb9ac1065a66ad0a0afb66ad68e000953e593164d8858224ce1aeb4cde5120f

Download Submit