vjw0rm | c82380d45b2e255e7121f6a76b2e9daf3e03836b8f3121f29aab932377fc8dc5

General

Target

RZKpmwZyCc_movar.js
Size

68KB
MD5

387b3482bc2829229722380c02a7a6f0
SHA1

81869d1b70775e564e583fb955ae8179b183122f
SHA256

c82380d45b2e255e7121f6a76b2e9daf3e03836b8f3121f29aab932377fc8dc5
SHA512

5810c27e2b677c0864198cd03a06100324e85c53f6324429a8a680a935e064dfc141920303a60c732ad3f2bab8e48b11261a5c963e9e362dac19414aa83b299b
SSDEEP

1536:enVk9hSrHAb6G+GCEnwH+acT16uXNWrI5UjelXjk:enq9qHE9+CBT16tB

Score

10^/10

vjw0rm wshrat persistence trojan worm

Malware Config

Extracted

Family

wshrat

C2

http://45.139.105.174:7670

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 24 IoCs

flow	pid	Process
12	672	wscript.exe
13	592	wscript.exe
14	468	wscript.exe
15	468	wscript.exe
18	468	wscript.exe
20	468	wscript.exe
23	468	wscript.exe
24	672	wscript.exe
26	592	wscript.exe
27	468	wscript.exe
31	468	wscript.exe
32	468	wscript.exe
34	468	wscript.exe
38	468	wscript.exe
40	672	wscript.exe
42	592	wscript.exe
43	468	wscript.exe
45	468	wscript.exe
48	468	wscript.exe
50	468	wscript.exe
55	468	wscript.exe
58	672	wscript.exe
59	468	wscript.exe
61	592	wscript.exe

Drops startup file 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pTycLbjPNg.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pTycLbjPNg.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RZKpmwZyCc_movar.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RZKpmwZyCc_movar.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pTycLbjPNg.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\USER\S-1-5-21-3406023954-474543476-3319432036-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\RZKpmwZyCc_movar = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\RZKpmwZyCc_movar.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RZKpmwZyCc_movar = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\RZKpmwZyCc_movar.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\RZKpmwZyCc_movar = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\RZKpmwZyCc_movar.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RZKpmwZyCc_movar = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\RZKpmwZyCc_movar.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 16 IoCs

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

description	flow	ioc
HTTP User-Agent header	15	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	27	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	32	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	48	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	59	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	14	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	31	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	34	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	38	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	45	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	50	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	18	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	20	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	23	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	43	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript
HTTP User-Agent header	55	WSHRAT\|E8EA1FD0\|VUIIVLGQ\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/12/2022\|JavaScript

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 592	1728	wscript.exe	28
PID 1728 wrote to memory of 592	1728	wscript.exe	28
PID 1728 wrote to memory of 592	1728	wscript.exe	28
PID 1728 wrote to memory of 468	1728	wscript.exe	29
PID 1728 wrote to memory of 468	1728	wscript.exe	29
PID 1728 wrote to memory of 468	1728	wscript.exe	29
PID 468 wrote to memory of 672	468	wscript.exe	31
PID 468 wrote to memory of 672	468	wscript.exe	31
PID 468 wrote to memory of 672	468	wscript.exe	31

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\RZKpmwZyCc_movar.js
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\pTycLbjPNg.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:592
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\RZKpmwZyCc_movar.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:468
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\pTycLbjPNg.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    PID:672

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\RZKpmwZyCc_movar.js

Filesize
68KB

MD5
387b3482bc2829229722380c02a7a6f0

SHA1
81869d1b70775e564e583fb955ae8179b183122f

SHA256
c82380d45b2e255e7121f6a76b2e9daf3e03836b8f3121f29aab932377fc8dc5

SHA512
5810c27e2b677c0864198cd03a06100324e85c53f6324429a8a680a935e064dfc141920303a60c732ad3f2bab8e48b11261a5c963e9e362dac19414aa83b299b

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

Filesize
16KB

MD5
109194f9f824f9cbcbc8cbaf85502175

SHA1
faf63812152fc2c5b1858c1f6acc41ef81475dc5

SHA256
1931b5e0f1160d985036b8fd753dd93206db0f03eb6b15c6d1e04b437066e9d9

SHA512
63362d6e68cf44008ea8535265dd0b5fbbd2bf58c5d501be100f4d5c23549e3165c611f0d26b89e13ba4578b7bd1964fbb931ec769af453b1935e1e4a73b8e93

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

Filesize
68KB

MD5
387b3482bc2829229722380c02a7a6f0

SHA1
81869d1b70775e564e583fb955ae8179b183122f

SHA256
c82380d45b2e255e7121f6a76b2e9daf3e03836b8f3121f29aab932377fc8dc5

SHA512
5810c27e2b677c0864198cd03a06100324e85c53f6324429a8a680a935e064dfc141920303a60c732ad3f2bab8e48b11261a5c963e9e362dac19414aa83b299b

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

Filesize
16KB

MD5
109194f9f824f9cbcbc8cbaf85502175

SHA1
faf63812152fc2c5b1858c1f6acc41ef81475dc5

SHA256
1931b5e0f1160d985036b8fd753dd93206db0f03eb6b15c6d1e04b437066e9d9

SHA512
63362d6e68cf44008ea8535265dd0b5fbbd2bf58c5d501be100f4d5c23549e3165c611f0d26b89e13ba4578b7bd1964fbb931ec769af453b1935e1e4a73b8e93

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

Filesize
16KB

MD5
109194f9f824f9cbcbc8cbaf85502175

SHA1
faf63812152fc2c5b1858c1f6acc41ef81475dc5

SHA256
1931b5e0f1160d985036b8fd753dd93206db0f03eb6b15c6d1e04b437066e9d9

SHA512
63362d6e68cf44008ea8535265dd0b5fbbd2bf58c5d501be100f4d5c23549e3165c611f0d26b89e13ba4578b7bd1964fbb931ec769af453b1935e1e4a73b8e93

Download Submit
memory/1728-54-0x000007FEFBFC1000-0x000007FEFBFC3000-memory.dmp

Filesize
8KB

Download

Analysis

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