vjw0rm | e21dba51d9968a1073d43143b7acbd4179a8fa73fc5f48921eabac7ea9869daa

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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 7 IoCs

flow	pid	Process
5	2780	wscript.exe
10	2780	wscript.exe
18	2780	wscript.exe
23	2780	wscript.exe
29	2780	wscript.exe
34	2780	wscript.exe
42	2780	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-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\JMuHxVQRbU.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\QTI627R350 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ef30d08be6b02f148da164e54892c8e3_JaffaCakes118.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 3 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 2812	2780	wscript.exe	28
PID 2780 wrote to memory of 2812	2780	wscript.exe	28
PID 2780 wrote to memory of 2812	2780	wscript.exe	28

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ef30d08be6b02f148da164e54892c8e3_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2780
- 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:2812

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

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