vjw0rm | db0307c145bf8f940b790830d5ade8fd7bb6bac5dfc482a0d2eda2097ba24246

General

Target

RFQ- Ref. No. MS-DGP-220137.js
Size

375KB
MD5

522a31506ef88ce5bff4b179b11a9a4e
SHA1

24c6896ce449bd32acc6827247b14f5c51ae9f71
SHA256

db0307c145bf8f940b790830d5ade8fd7bb6bac5dfc482a0d2eda2097ba24246
SHA512

02ca78bd2121f5d94e282af76beee1c292871eb9e22ab90474230de7565b4199682df14295100b7144c2cbd3940a2a5e23ce066e7dbd3b34dba65378af8843ce

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 14 IoCs

Processes:

wscript.exe

flow	pid	process
4	4036	wscript.exe
6	4036	wscript.exe
10	4036	wscript.exe
22	4036	wscript.exe
31	4036	wscript.exe
34	4036	wscript.exe
36	4036	wscript.exe
37	4036	wscript.exe
41	4036	wscript.exe
42	4036	wscript.exe
44	4036	wscript.exe
45	4036	wscript.exe
46	4036	wscript.exe
51	4036	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-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\JUclMnXWGX.js\""	wscript.exe

Drops file in Program Files directory 12 IoCs

Processes:

java.exe

description	ioc	process
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\ntdll.pdb	java.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 4548 wrote to memory of 4036	4548	wscript.exe	wscript.exe
PID 4548 wrote to memory of 4036	4548	wscript.exe	wscript.exe
PID 4548 wrote to memory of 4664	4548	wscript.exe	java.exe
PID 4548 wrote to memory of 4664	4548	wscript.exe	java.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\RFQ- Ref. No. MS-DGP-220137.js"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4548

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\JUclMnXWGX.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4036

C:\Program Files\Java\jre1.8.0_66\bin\java.exe
"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Local\Temp\SM.jar"
2⤵
- Drops file in Program Files directory
PID:4664

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\SM.jar
Filesize
164KB

MD5
edf0e95033cb0df96be06c5088142288

SHA1
3972af92633203e7857ec0e4ae65246b32c83539

SHA256
9712cb8921bc1aaf24f86d6a82ce59a332f6ad04eb1af0414f9bd51e0f35e049

SHA512
b7086f0880328bfbb11f6a48a95bde9718318bec9a66c4d00dc16384a1c7ccae97685c7e50d8278c3a267431032d418c61acc9a9ca926d0bd948b79c722a562a

Download Submit
C:\Users\Admin\AppData\Roaming\JUclMnXWGX.js
Filesize
30KB

MD5
1a78c6c4ea92442d7da8af8d2557e0d2

SHA1
410764bee9220b5630ac46f7a1c5c36c93b742c9

SHA256
288f91b613ec105cf8d9576e056b6c504c859c842b3b17649d103308040bd82d

SHA512
548c4cd49e8277b49d25d2d4b3ba04a29ba474e0ae1761a8edf12643923a6872e8bc448c05b0003c7bcea44cf1847d82ea7ad89874b6657e41055b89e7d4b20d

Download Submit
memory/4036-130-0x0000000000000000-mapping.dmp

Download
memory/4664-132-0x0000000000000000-mapping.dmp

Download
memory/4664-143-0x0000000002710000-0x0000000003710000-memory.dmp

Filesize
16.0MB

Download
memory/4664-153-0x0000000002710000-0x0000000003710000-memory.dmp

Filesize
16.0MB

Download
memory/4664-154-0x0000000002710000-0x0000000003710000-memory.dmp

Filesize
16.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads