vjw0rm | ec2ff3ea783304168e8acdf7e60a3c4d97efa75bf922c10ee1b947d1b87a7cc2

General

Target

A3D61C51677550BCAB428E66D5AE3080.exe
Size

2.1MB
MD5

a3d61c51677550bcab428e66d5ae3080
SHA1

7ccd97e4c9afcd1006aaeb617f1d197d8913e34c
SHA256

ec2ff3ea783304168e8acdf7e60a3c4d97efa75bf922c10ee1b947d1b87a7cc2
SHA512

da991a168162ec3d0f551413bb9d7f21f3f20f9f171d8a81684f2cdde80883e9a06aaf789d3e8c48ee148b280d4cf757344d057187fb3839e031d94255b3e6cc

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 2 IoCs

Processes:

WScript.exe

flow pid process

15 3208 WScript.exe
19 3208 WScript.exe
Executes dropped EXE 1 IoCs

Processes:

setup.exe

pid process

1020 setup.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\info.js WScript.exe

flow	pid	process
15	3208	WScript.exe
19	3208	WScript.exe

pid	process
1020	setup.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\info.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\WEHHRB8F7I = "\"C:\\Users\\Admin\\AppData\\Roaming\\info.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

1876 1020 WerFault.exe setup.exe
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

1172 schtasks.exe

pid	pid_target	process	target process
1876	1020	WerFault.exe	setup.exe

pid	process
1172	schtasks.exe

Modifies registry class 1 IoCs

Processes:

A3D61C51677550BCAB428E66D5AE3080.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	A3D61C51677550BCAB428E66D5AE3080.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

WerFault.exe

pid	process
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe
1876	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 1876 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1876	WerFault.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

A3D61C51677550BCAB428E66D5AE3080.exeWScript.exe

description	pid	process	target process
PID 856 wrote to memory of 3208	856	A3D61C51677550BCAB428E66D5AE3080.exe	WScript.exe
PID 856 wrote to memory of 3208	856	A3D61C51677550BCAB428E66D5AE3080.exe	WScript.exe
PID 856 wrote to memory of 3208	856	A3D61C51677550BCAB428E66D5AE3080.exe	WScript.exe
PID 856 wrote to memory of 1020	856	A3D61C51677550BCAB428E66D5AE3080.exe	setup.exe
PID 856 wrote to memory of 1020	856	A3D61C51677550BCAB428E66D5AE3080.exe	setup.exe
PID 3208 wrote to memory of 1172	3208	WScript.exe	schtasks.exe
PID 3208 wrote to memory of 1172	3208	WScript.exe	schtasks.exe
PID 3208 wrote to memory of 1172	3208	WScript.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\A3D61C51677550BCAB428E66D5AE3080.exe
"C:\Users\Admin\AppData\Local\Temp\A3D61C51677550BCAB428E66D5AE3080.exe"
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:856

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\info.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3208

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn anydesk /tr "C:\Users\Admin\AppData\Roaming\info.js
3⤵
- Creates scheduled task(s)
PID:1172

C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
2⤵
- Executes dropped EXE
PID:1020

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1020 -s 588
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1876

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\Local\Temp\info.js
MD5
6a89d3b24b67760618efe3d28c9011db

SHA1
9bdfcb2d237c91ea38b731611a135e345121729f

SHA256
0e54f80cede9e1aabf88c1676774c24888b5c72f34acdb1c88dc6e026abc76c4

SHA512
413153600e6a932a7f07394284ae4ee4a66916c72ff5375062374a6899bb81c96000972c4d376db46dba25385b3ca02c6704cfbac58ca948a01edc1b08658f5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\setup.exe
MD5
31adbc555a9df3e7a17fe6077c1dae93

SHA1
231f3c01e17fc3f9ae898c7317f4e4eee386cde1

SHA256
16f8c2fc708874cf0648770c9910f481fe0f46e555ad57397247f5ce8b3b0de8

SHA512
991f8b0140635bfb37fce3b457021543e2ee4d6c80000534cbe515d15a6f02ff2c8b9e2f3e78a46a985eafcc2abcd9b0eb219bca29cb7af4544a9b33a0a0ca33

Download Submit
C:\Users\Admin\AppData\Local\Temp\setup.exe
MD5
31adbc555a9df3e7a17fe6077c1dae93

SHA1
231f3c01e17fc3f9ae898c7317f4e4eee386cde1

SHA256
16f8c2fc708874cf0648770c9910f481fe0f46e555ad57397247f5ce8b3b0de8

SHA512
991f8b0140635bfb37fce3b457021543e2ee4d6c80000534cbe515d15a6f02ff2c8b9e2f3e78a46a985eafcc2abcd9b0eb219bca29cb7af4544a9b33a0a0ca33

Download Submit
memory/1020-118-0x0000000000000000-mapping.dmp

Download
memory/1020-121-0x0000017084D00000-0x0000017084D01000-memory.dmp

Filesize
4KB

Download
memory/1172-123-0x0000000000000000-mapping.dmp

Download
memory/3208-116-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads