vjw0rm | 4d33a89607377958b5ebe7aace8999e255d3a39d7b709bc026104975a6cc1d9c

General

Target

NewPO.js
Size

51KB
MD5

744ae049bf8a37d2e945802c3349e240
SHA1

7af3930f68e5b1c4bec8aea48b7d43e4aeff8719
SHA256

4d33a89607377958b5ebe7aace8999e255d3a39d7b709bc026104975a6cc1d9c
SHA512

9049cc2409c1807c47311c61e99c34bb450bd7daf573e88fbc6a464ef6a38a7afb26c314ee4ca6a82d2e17bd48f36591622a8b0bfb89b7b43f9c58380eff3e20
SSDEEP

768:DUEzBbCFLKCRxwxE1k/FvZIaf9fgWQ7juipgGfvoclPfDnJPbIpDEsYOLJVK:haLvGE1ktvGaf98juipSgfJb84sYOVVK

Score

10^/10

vjw0rm wshrat persistence trojan worm

Malware Config

Extracted

Family

wshrat

C2

http://212.193.30.230:7780

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
WSHRAT
WSHRAT is a variant of Houdini worm and has vbs and js variants.
trojan wshrat

Blocklisted process makes network request 22 IoCs

flow	pid	Process
9	1980	wscript.exe
10	1724	wscript.exe
11	1320	wscript.exe
12	1320	wscript.exe
17	1320	wscript.exe
18	1980	wscript.exe
20	1724	wscript.exe
25	1320	wscript.exe
28	1980	wscript.exe
30	1724	wscript.exe
31	1320	wscript.exe
32	1320	wscript.exe
33	1320	wscript.exe
35	1320	wscript.exe
40	1980	wscript.exe
43	1724	wscript.exe
44	1320	wscript.exe
45	1320	wscript.exe
47	1320	wscript.exe
49	1980	wscript.exe
52	1724	wscript.exe
54	1320	wscript.exe

Drops startup file 5 IoCs

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

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\NewPO = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\NewPO.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NewPO = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\NewPO.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\NewPO = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\NewPO.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NewPO = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\NewPO.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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

Script User-Agent 7 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	11	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/10/2022\|JavaScript
HTTP User-Agent header	25	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/10/2022\|JavaScript
HTTP User-Agent header	31	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/10/2022\|JavaScript
HTTP User-Agent header	32	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/10/2022\|JavaScript
HTTP User-Agent header	33	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/10/2022\|JavaScript
HTTP User-Agent header	44	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/10/2022\|JavaScript
HTTP User-Agent header	45	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/10/2022\|JavaScript

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1784 wrote to memory of 1724	1784	wscript.exe	28
PID 1784 wrote to memory of 1724	1784	wscript.exe	28
PID 1784 wrote to memory of 1724	1784	wscript.exe	28
PID 1784 wrote to memory of 1320	1784	wscript.exe	29
PID 1784 wrote to memory of 1320	1784	wscript.exe	29
PID 1784 wrote to memory of 1320	1784	wscript.exe	29
PID 1320 wrote to memory of 1980	1320	wscript.exe	30
PID 1320 wrote to memory of 1980	1320	wscript.exe	30
PID 1320 wrote to memory of 1980	1320	wscript.exe	30

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\NewPO.js
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1784
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\yksCsTuMPb.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:1724
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\NewPO.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1320
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\yksCsTuMPb.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    PID:1980

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\NewPO.js

Filesize
51KB

MD5
744ae049bf8a37d2e945802c3349e240

SHA1
7af3930f68e5b1c4bec8aea48b7d43e4aeff8719

SHA256
4d33a89607377958b5ebe7aace8999e255d3a39d7b709bc026104975a6cc1d9c

SHA512
9049cc2409c1807c47311c61e99c34bb450bd7daf573e88fbc6a464ef6a38a7afb26c314ee4ca6a82d2e17bd48f36591622a8b0bfb89b7b43f9c58380eff3e20

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\yksCsTuMPb.js

Filesize
10KB

MD5
17d5c0a1060cfc8fbaa137d82271d871

SHA1
4a3366a5c1c835e8f0ddea05e74fc14b189345cd

SHA256
2334f65d994aeff042eb0f2fc1d5b71ddff825dbed01dbcc481a0b13d91ac74f

SHA512
909de1138d286bc6226bc906c2d5d5b2a566f310b02fbb74fecfe41e38230cdec4347a3e22d3e16ef1a26bc07aef12b59dd0a6e75be8839acc2f39ccd002667a

Download Submit
C:\Users\Admin\AppData\Roaming\NewPO.js

Filesize
51KB

MD5
744ae049bf8a37d2e945802c3349e240

SHA1
7af3930f68e5b1c4bec8aea48b7d43e4aeff8719

SHA256
4d33a89607377958b5ebe7aace8999e255d3a39d7b709bc026104975a6cc1d9c

SHA512
9049cc2409c1807c47311c61e99c34bb450bd7daf573e88fbc6a464ef6a38a7afb26c314ee4ca6a82d2e17bd48f36591622a8b0bfb89b7b43f9c58380eff3e20

Download Submit
C:\Users\Admin\AppData\Roaming\yksCsTuMPb.js

Filesize
10KB

MD5
17d5c0a1060cfc8fbaa137d82271d871

SHA1
4a3366a5c1c835e8f0ddea05e74fc14b189345cd

SHA256
2334f65d994aeff042eb0f2fc1d5b71ddff825dbed01dbcc481a0b13d91ac74f

SHA512
909de1138d286bc6226bc906c2d5d5b2a566f310b02fbb74fecfe41e38230cdec4347a3e22d3e16ef1a26bc07aef12b59dd0a6e75be8839acc2f39ccd002667a

Download Submit
C:\Users\Admin\AppData\Roaming\yksCsTuMPb.js

Filesize
10KB

MD5
17d5c0a1060cfc8fbaa137d82271d871

SHA1
4a3366a5c1c835e8f0ddea05e74fc14b189345cd

SHA256
2334f65d994aeff042eb0f2fc1d5b71ddff825dbed01dbcc481a0b13d91ac74f

SHA512
909de1138d286bc6226bc906c2d5d5b2a566f310b02fbb74fecfe41e38230cdec4347a3e22d3e16ef1a26bc07aef12b59dd0a6e75be8839acc2f39ccd002667a

Download Submit
memory/1320-57-0x0000000000000000-mapping.dmp

Download
memory/1724-55-0x0000000000000000-mapping.dmp

Download
memory/1784-54-0x000007FEFC421000-0x000007FEFC423000-memory.dmp

Filesize
8KB

Download
memory/1980-60-0x0000000000000000-mapping.dmp

Download

Analysis

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