vjw0rm | 9f6e297dd86de88825487549c0f25f02c10138b57b1b955034995615c58a13d2

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
30/09/2022, 09:07

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General

Target

COMPLAINT.pdf.js
Size

46KB
MD5

56d85e623a701f4142a111275fbbc4f5
SHA1

51a35029e972c33d4ca4b835f00ab3a5a0469b9b
SHA256

9f6e297dd86de88825487549c0f25f02c10138b57b1b955034995615c58a13d2
SHA512

a75b846f4e8c1880f925ab295e972cf2f5aeb14f48bb6b849432853d4d1d487535f3632388fb5033b61570f8eda59d7623d0cf02f99a7d8dbccedd2e4c79956e
SSDEEP

768:7Vn42jDFXsoL7DkiZNsS83FmspAlaxuZDdiovlA2kBqV160Sa0mBSSLtdG:7Vn3jOK7DjZTyBil2wDdiovS660SakSi

Score

10^/10

vjw0rm wshrat persistence trojan worm

Malware Config

Extracted

Family

wshrat

http://niiarmah.kozow.com:1604

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 40 IoCs

flow	pid	Process
5	1036	wscript.exe
6	1212	wscript.exe
8	3324	wscript.exe
23	3324	wscript.exe
28	3324	wscript.exe
31	3324	wscript.exe
33	3324	wscript.exe
34	1212	wscript.exe
35	1036	wscript.exe
41	3324	wscript.exe
46	3324	wscript.exe
57	3324	wscript.exe
61	3324	wscript.exe
64	3324	wscript.exe
65	3324	wscript.exe
66	1036	wscript.exe
67	1212	wscript.exe
69	3324	wscript.exe
71	3324	wscript.exe
72	3324	wscript.exe
73	3324	wscript.exe
74	3324	wscript.exe
75	1212	wscript.exe
76	1036	wscript.exe
77	3324	wscript.exe
79	3324	wscript.exe
80	3324	wscript.exe
81	3324	wscript.exe
82	3324	wscript.exe
83	1036	wscript.exe
84	1212	wscript.exe
85	3324	wscript.exe
86	3324	wscript.exe
87	3324	wscript.exe
88	3324	wscript.exe
89	3324	wscript.exe
90	1212	wscript.exe
91	1036	wscript.exe
92	3324	wscript.exe
93	3324	wscript.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 5 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\COMPLAINT.pdf.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SShWrokJru.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SShWrokJru.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\COMPLAINT.pdf.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SShWrokJru.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
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\COMPLAINT = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\COMPLAINT.pdf.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\COMPLAINT = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\COMPLAINT.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\COMPLAINT = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\COMPLAINT.pdf.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\COMPLAINT = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\COMPLAINT.pdf.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

Script User-Agent 28 IoCs

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

description	flow	ioc
HTTP User-Agent header	92	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	93	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	74	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	89	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	79	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	82	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	87	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	28	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	72	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	33	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	46	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	71	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	77	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	80	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	8	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	65	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	81	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	23	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	31	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	61	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	64	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	86	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	88	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	41	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	57	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	85	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	73	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript
HTTP User-Agent header	69	WSHRAT\|36F4858E\|IYMUGYHL\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/9/2022\|JavaScript

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 1036	5008	wscript.exe	85
PID 5008 wrote to memory of 1036	5008	wscript.exe	85
PID 5008 wrote to memory of 3324	5008	wscript.exe	86
PID 5008 wrote to memory of 3324	5008	wscript.exe	86
PID 3324 wrote to memory of 1212	3324	wscript.exe	87
PID 3324 wrote to memory of 1212	3324	wscript.exe	87

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\COMPLAINT.pdf.js
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\SShWrokJru.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:1036
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\COMPLAINT.pdf.js"
  2⤵
  - Blocklisted process makes network request
  - Checks computer location settings
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:3324
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\SShWrokJru.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    PID:1212

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\COMPLAINT.pdf.js

Filesize
46KB

MD5
56d85e623a701f4142a111275fbbc4f5

SHA1
51a35029e972c33d4ca4b835f00ab3a5a0469b9b

SHA256
9f6e297dd86de88825487549c0f25f02c10138b57b1b955034995615c58a13d2

SHA512
a75b846f4e8c1880f925ab295e972cf2f5aeb14f48bb6b849432853d4d1d487535f3632388fb5033b61570f8eda59d7623d0cf02f99a7d8dbccedd2e4c79956e

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

Filesize
46KB

MD5
56d85e623a701f4142a111275fbbc4f5

SHA1
51a35029e972c33d4ca4b835f00ab3a5a0469b9b

SHA256
9f6e297dd86de88825487549c0f25f02c10138b57b1b955034995615c58a13d2

SHA512
a75b846f4e8c1880f925ab295e972cf2f5aeb14f48bb6b849432853d4d1d487535f3632388fb5033b61570f8eda59d7623d0cf02f99a7d8dbccedd2e4c79956e

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

Filesize
8KB

MD5
fe336640086b91731a9486f8d777bdab

SHA1
3f2e7924c2223490208b2f103029510261ecefef

SHA256
775e70946b221f699fd762167e033a487030bd1200e3062d74ddf4f8f288329b

SHA512
0a85088d5f4efba18de3b2df27dd1879be4573fe741ba054fdd070d9e4c720a1c96c1b26ffa53f2d363ab310df3b04ae6f77ee203cb23119f4c63ab8898e9f4f

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

Filesize
8KB

MD5
fe336640086b91731a9486f8d777bdab

SHA1
3f2e7924c2223490208b2f103029510261ecefef

SHA256
775e70946b221f699fd762167e033a487030bd1200e3062d74ddf4f8f288329b

SHA512
0a85088d5f4efba18de3b2df27dd1879be4573fe741ba054fdd070d9e4c720a1c96c1b26ffa53f2d363ab310df3b04ae6f77ee203cb23119f4c63ab8898e9f4f

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

Filesize
8KB

MD5
fe336640086b91731a9486f8d777bdab

SHA1
3f2e7924c2223490208b2f103029510261ecefef

SHA256
775e70946b221f699fd762167e033a487030bd1200e3062d74ddf4f8f288329b

SHA512
0a85088d5f4efba18de3b2df27dd1879be4573fe741ba054fdd070d9e4c720a1c96c1b26ffa53f2d363ab310df3b04ae6f77ee203cb23119f4c63ab8898e9f4f

Download Submit