vjw0rm | 344b8c7c7c4467f18c9b43447efafad8ac795c25b006465aeb1bd6097b50abb7

General

Target

Confirmation Slip.PDF.js
Size

3.4MB
MD5

f8ddd3aaf61755a6c98ec2c29972175c
SHA1

1ddd1757ef6be65c231dc383369b84773544a6da
SHA256

344b8c7c7c4467f18c9b43447efafad8ac795c25b006465aeb1bd6097b50abb7
SHA512

a6ebf3d3ffa5c749f2ea2dc5eb90a7a355b8dcc1cf5b7b48cfdbc291b8f5f6df560ffcd59a6242583e64d0795ba034ad7aea2b68039b98b9b50259305e13e1c9
SSDEEP

24576:zw3cOiE9u9QbpAW0MP074JExjtKTs7JRkWgGgbR4L3lN2bpxjkn1vrFWuYLasHfy:E0j

Score

10^/10

vjw0rm wshrat persistence trojan worm

Malware Config

Extracted

Family

wshrat

C2

http://84.21.172.33:8895

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 44 IoCs

Processes:

wscript.exewscript.exe

flow	pid	process
6	1344	wscript.exe
7	2660	wscript.exe
9	1344	wscript.exe
15	2660	wscript.exe
16	1344	wscript.exe
17	1344	wscript.exe
19	2660	wscript.exe
20	1344	wscript.exe
30	1344	wscript.exe
32	2660	wscript.exe
33	1344	wscript.exe
43	1344	wscript.exe
44	2660	wscript.exe
46	1344	wscript.exe
48	1344	wscript.exe
49	2660	wscript.exe
57	1344	wscript.exe
58	2660	wscript.exe
59	1344	wscript.exe
60	1344	wscript.exe
61	2660	wscript.exe
62	1344	wscript.exe
64	1344	wscript.exe
65	2660	wscript.exe
66	1344	wscript.exe
68	1344	wscript.exe
69	2660	wscript.exe
71	1344	wscript.exe
72	2660	wscript.exe
73	1344	wscript.exe
74	1344	wscript.exe
75	2660	wscript.exe
76	1344	wscript.exe
78	1344	wscript.exe
79	2660	wscript.exe
80	1344	wscript.exe
81	1344	wscript.exe
82	2660	wscript.exe
83	1344	wscript.exe
84	2660	wscript.exe
86	1344	wscript.exe
87	1344	wscript.exe
88	2660	wscript.exe
89	1344	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-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 4 IoCs

Processes:

wscript.exewscript.exe

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

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Confirmation Slip = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Confirmation Slip.PDF.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Confirmation Slip = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Confirmation Slip.PDF.js\""	wscript.exe

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

System Information Discovery
T1082

Script User-Agent 28 IoCs

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

Processes:

description	flow	ioc
HTTP User-Agent header	16	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	46	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	6	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	17	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	43	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	64	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	78	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	80	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	81	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	87	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	33	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	48	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	71	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	74	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	59	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	66	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	73	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	30	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	68	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	83	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	86	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	89	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	9	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	20	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	57	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	60	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	62	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript
HTTP User-Agent header	76	WSHRAT\|A0674C6B\|UXINIZSV\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1344 wrote to memory of 2660	1344	wscript.exe	wscript.exe
PID 1344 wrote to memory of 2660	1344	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Confirmation Slip.PDF.js"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1344

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\JbhvVxjFLu.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
PID:2660

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\Roaming\JbhvVxjFLu.js
Filesize
346KB

MD5
094b69598513ca6dad4609a1a622c665

SHA1
44fbd36b3c2eec31e3424d7ec5d93d50721e7d13

SHA256
f50dc6f0205c3d62f02ef2df694a1bb468b110efc83b38236747d1b40c3cbc33

SHA512
558b6ae3466c0ca2eee60665acb41f3ab9deacd7898cfd2404ed726f47990d188ba3eec429cba91aeed9d87a4b37d17be78801009ecb42d4c8dadd2f017fed67

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Confirmation Slip.PDF.js
Filesize
3.4MB

MD5
f8ddd3aaf61755a6c98ec2c29972175c

SHA1
1ddd1757ef6be65c231dc383369b84773544a6da

SHA256
344b8c7c7c4467f18c9b43447efafad8ac795c25b006465aeb1bd6097b50abb7

SHA512
a6ebf3d3ffa5c749f2ea2dc5eb90a7a355b8dcc1cf5b7b48cfdbc291b8f5f6df560ffcd59a6242583e64d0795ba034ad7aea2b68039b98b9b50259305e13e1c9

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads