vjw0rm | fd85a794e817b6c099c6cb24c109105679815d05bb85e60a1f6e2c0b07326b01

General

Target

Maersk Sets Documents.js
Size

47KB
MD5

3391e6b60c013e63bb73c91cd77ea05b
SHA1

8e7197b5dc1c99d6579f0a002aa7a4e0fa16de8a
SHA256

7b3187751d1b85e101baf35c73d93c77006cf7a6729ba1b57a702884a0a5c17d
SHA512

c025c5f85219083aabe69474fbbf1415d445fa27c8c19640ccf971be3178741fcc8623f114008c99005a36e4848950fd8a11515bf2f31f79a3168ee3bb95fb33

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 4 IoCs

Processes:

wscript.exewscript.exe

flow pid process

19 4496 wscript.exe
20 4524 wscript.exe
22 4524 wscript.exe
23 4496 wscript.exe

flow	pid	process
19	4496	wscript.exe
20	4524	wscript.exe
22	4524	wscript.exe
23	4496	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

Processes:

wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 4 IoCs

Processes:

wscript.exewscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\test.vbs	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\test.vbs	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\quFMSWkFxm.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\quFMSWkFxm.js	wscript.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exewscript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\quFMSWkFxm.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\test = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\test.vbs\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\test = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\test.vbs\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows\CurrentVersion\Run	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 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 4508 wrote to memory of 4496	4508	wscript.exe	wscript.exe
PID 4508 wrote to memory of 4496	4508	wscript.exe	wscript.exe
PID 4508 wrote to memory of 4524	4508	wscript.exe	wscript.exe
PID 4508 wrote to memory of 4524	4508	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Maersk Sets Documents.js"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4508

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\quFMSWkFxm.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4496

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Local\Temp\test.vbs"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4524

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\test.vbs
Filesize
13KB

MD5
fcab27f1e1e9316c441368eb38fea59c

SHA1
37e0c7c153b5983cb175a1bcfbe2fc7960606568

SHA256
7a535dd7f5f8dc5193c7184ea0278f862e06485c369821747af71b174000fdb6

SHA512
ed83503d8af7abf3f342719539f6f305a9fc34d45b4fe7c5dcfd68855dc76e76fe5cbed111303d3f7c1e4171cef779ace81d2e0d810ef02dd0b7c8ec6955894c

Download Submit
C:\Users\Admin\AppData\Roaming\quFMSWkFxm.js
Filesize
9KB

MD5
c16ce4cee2d0306bfdb474bcd0dac7d2

SHA1
a006c5c9b53faa68e7fee669b9b1526d8e36e36f

SHA256
c70607ee78ed62e79ac29ecc0218f77bc6800b0ff03c807d6c10d869b46a3c5e

SHA512
e3290deb093c90b42225a31fc21cdddcdab65206f7ae19910ca264c36125b91bf027baa6b22dfaab893c169e0b59e2432e4aa9f58e59c947f97ba882b036b19f

Download Submit
memory/4496-130-0x0000000000000000-mapping.dmp

Download
memory/4524-131-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads