vjw0rm | e33df6ad1c1f683b5fe7dd5edfe1d0f9e246ab41364b3f6ae297e717a5ff8026

General

Target

a3b2ac28_icZisiD3ix.js
Size

904KB
MD5

a3b2ac28fb71d8461b6c90327fabb5a1
SHA1

033bf48edff207df74d6b78410040f391750db8f
SHA256

e33df6ad1c1f683b5fe7dd5edfe1d0f9e246ab41364b3f6ae297e717a5ff8026
SHA512

4174fd12ac86611280ffb1c3afaffbeb1c888f7835747738dba38cce5c75093c6831bb509236839fb67931bc77f925575e418d89bf295e8265d0987b266efc89

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 18 IoCs

Processes:

WScript.exe

flow	pid	process
9	1544	WScript.exe
18	1544	WScript.exe
19	1544	WScript.exe
20	1544	WScript.exe
21	1544	WScript.exe
22	1544	WScript.exe
23	1544	WScript.exe
24	1544	WScript.exe
25	1544	WScript.exe
26	1544	WScript.exe
27	1544	WScript.exe
28	1544	WScript.exe
29	1544	WScript.exe
30	1544	WScript.exe
31	1544	WScript.exe
32	1544	WScript.exe
33	1544	WScript.exe
34	1544	WScript.exe

Drops startup file 2 IoCs

Processes:

WScript.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lrsFyEuHKj.js	WScript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lrsFyEuHKj.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-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\lrsFyEuHKj.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
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3504 2136 WerFault.exe javaw.exe
Modifies registry class 1 IoCs

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings wscript.exe

pid	pid_target	process	target process
3504	2136	WerFault.exe	javaw.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	wscript.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

WerFault.exe

pid	process
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe
3504	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 3504 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	3504	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 3128 wrote to memory of 1544	3128	wscript.exe	WScript.exe
PID 3128 wrote to memory of 1544	3128	wscript.exe	WScript.exe
PID 3128 wrote to memory of 2136	3128	wscript.exe	javaw.exe
PID 3128 wrote to memory of 2136	3128	wscript.exe	javaw.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\a3b2ac28_icZisiD3ix.js
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3128

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\lrsFyEuHKj.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1544

C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe
"C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\szkzjfx.txt"
2⤵
PID:2136

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2136 -s 352
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3504

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\lrsFyEuHKj.js
MD5
1ba75bca44a20a321cea4e496ce91a85

SHA1
5a14b44b498f56cbe7b248c537479c845ff465c6

SHA256
4035eee1e50075cfcaf233c8d0511dfeeeb01870b1a4baf4a43e9b37a03cc804

SHA512
2aaf2cafe8951a03e81d56eadb1d83516a9fc986d7ce6e8aa9a2704da1916feb900b42e271979cdfd0c8852ed2fa17c948a394d3e5977a47e2140fcb2d945481

Download Submit
C:\Users\Admin\AppData\Roaming\szkzjfx.txt
MD5
57845a03f0630d3fbb9caa203e940935

SHA1
9c4bb48d46593af760ddb9aec6160e2f379e99f7

SHA256
85e1a1df9973a080afe6a11d338a36994732a40cf9f891ec7f2b69dc56aed19f

SHA512
7ede78b67b49d91d13ab3eb642874263899231d1c4fbb1fa5575f8c904f46fb32091986b9bd9f2824859f6e6748f112314e745f0ac858d08f3a3b9b152ee64e1

Download Submit
memory/1544-114-0x0000000000000000-mapping.dmp

Download
memory/2136-116-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads