vjw0rm | e21dba51d9968a1073d43143b7acbd4179a8fa73fc5f48921eabac7ea9869daa

Analysis

max time kernel
143s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12-04-2024 05:03

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General

Target

ef30d08be6b02f148da164e54892c8e3_JaffaCakes118.js
Size

30KB
MD5

ef30d08be6b02f148da164e54892c8e3
SHA1

4998edfd067f343a56e03422d3913c1cc7066e4b
SHA256

e21dba51d9968a1073d43143b7acbd4179a8fa73fc5f48921eabac7ea9869daa
SHA512

9e1b1142248c8088c2ecb2bd33887136e4f39c3590ce3b95f2fa5e93b922a07c7ecd598650d91a7ee93c4f018b898a96e49ed41157be607abf1b1ce9845c72c1
SSDEEP

768:OQ6Qw+4YYPOSCqEGm6XBHqwAFibShsWsj0tXYdAZlAwNY03l83:Z6Q7Yxh1hK8bKsxiXgSlAuU

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 6 IoCs

flow	pid	Process
4	1392	wscript.exe
31	1392	wscript.exe
49	1392	wscript.exe
55	1392	wscript.exe
63	1392	wscript.exe
68	1392	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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 4 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ef30d08be6b02f148da164e54892c8e3_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ef30d08be6b02f148da164e54892c8e3_JaffaCakes118.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JMuHxVQRbU.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JMuHxVQRbU.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\QTI627R350 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ef30d08be6b02f148da164e54892c8e3_JaffaCakes118.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\JMuHxVQRbU.js\""	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1392 wrote to memory of 884	1392	wscript.exe	85
PID 1392 wrote to memory of 884	1392	wscript.exe	85

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ef30d08be6b02f148da164e54892c8e3_JaffaCakes118.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:1392
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\JMuHxVQRbU.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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\JMuHxVQRbU.js

Filesize
10KB

MD5
33f71afd870cab678bc8b4967a0bd77f

SHA1
fa1f2f046d2daf22065a73232317aa5b0a155bdb

SHA256
b45b6d0bad5cb0ec3aa0d3388014d9830e2db4162983772174be612aa2f3aefc

SHA512
56021edf4b36a130c536e117b197943c78fa81922c383b952e240828ac7ad803338fef02670d1fdb56f0b5403198c36a46d4b1de430bdce00883eca595ee19d5

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads