vjw0rm | d339b022589120edd727f6c3307e0df5851d4073f4d8f588116cf9f49512df9b

General

Target

eVoucher.js
Size

29KB
MD5

48d9924ce427fdd657487fdf2858f7f9
SHA1

4e6d949dfbc65d7abfae5fe2f4302c556ac0a54f
SHA256

d339b022589120edd727f6c3307e0df5851d4073f4d8f588116cf9f49512df9b
SHA512

d56567298581bbdd414b6d35448d0a69fc884994abf843e030fffb4337cf9122f66f10744cca4ad6745260912569fc5ef1d36d6051952c407397e7602e71a303

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 13 IoCs

Processes:

wscript.exe

flow	pid	process
5	1604	wscript.exe
6	1604	wscript.exe
7	1604	wscript.exe
9	1604	wscript.exe
10	1604	wscript.exe
11	1604	wscript.exe
13	1604	wscript.exe
14	1604	wscript.exe
15	1604	wscript.exe
17	1604	wscript.exe
18	1604	wscript.exe
19	1604	wscript.exe
21	1604	wscript.exe

Drops startup file 1 IoCs

Processes:

wscript.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eVoucher.js wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eVoucher.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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\KYXNMD0WI5 = "\"C:\\Users\\Admin\\eVoucher.js\""	wscript.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

792 schtasks.exe

pid	process
792	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1604 wrote to memory of 1192	1604	wscript.exe	wscript.exe
PID 1604 wrote to memory of 1192	1604	wscript.exe	wscript.exe
PID 1604 wrote to memory of 1192	1604	wscript.exe	wscript.exe
PID 1604 wrote to memory of 792	1604	wscript.exe	schtasks.exe
PID 1604 wrote to memory of 792	1604	wscript.exe	schtasks.exe
PID 1604 wrote to memory of 792	1604	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\eVoucher.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1604

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\ZIdtxECakT.js"
2⤵
PID:1192

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\eVoucher.js
2⤵
- Creates scheduled task(s)
PID:792

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\ZIdtxECakT.js
Filesize
8KB

MD5
1faddc7933cfad79bb1e2721b209054d

SHA1
d296650263c2056776a426b2f425efdf947f8091

SHA256
30c0bf91205929a0683f72394eb17014b7ada70e5ecb2f5dc33ef6fc3c75b9cb

SHA512
08b641e45e34eda6401cb23dfcd0b9ad815a393bdb8bd75ae214062c3edc41ea209b0fc47b0330ac787050efc467cc9157996eae24d4d0898f245c4e972d6e72

Download Submit
memory/792-57-0x0000000000000000-mapping.dmp

Download
memory/1192-55-0x0000000000000000-mapping.dmp

Download
memory/1604-54-0x000007FEFB551000-0x000007FEFB553000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads