vjw0rm | b6e0c17a224fe0df6f58add122e0420aad76a697c1d7634aa0cfe2f5dc84dc2b

General

Target

b6e0c17a224fe0df6f58add122e0420aad76a697c1d7634aa0cfe2f5dc84dc2b.exe
Size

541KB
MD5

c159fc653a86ef3eab80e5d06b9cfa2c
SHA1

f95b35bcd8528dafda2b8fd53bed2bab150676e3
SHA256

b6e0c17a224fe0df6f58add122e0420aad76a697c1d7634aa0cfe2f5dc84dc2b
SHA512

78ee8d1c957f21e6023f4c9096f63c9bc697620cfc7584bb937b4cffb792f312c8fd0cb586c0aa4f43ddf8e622042f2c85852f10018e0c5799d6dd02903ab9f2
SSDEEP

12288:lBXSh9d55EWf6bkHXgtQZDsfDfWXWBt9ExkUp8ZbcoahOOufKlgc+ABeaESJAzEM:7QZQz8Du4

Score

10^/10

vjw0rm wshrat persistence trojan worm

Malware Config

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

WSHRAT payload 3 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\lRDdN.vbs	family_wshrat
C:\Users\Admin\lRDdN.vbs	family_wshrat
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lRDdN.vbs	family_wshrat

Blocklisted process makes network request 10 IoCs

Processes:

wscript.exewscript.exeWScript.exe

flow	pid	process
8	4148	wscript.exe
9	4148	wscript.exe
14	4152	wscript.exe
16	4152	wscript.exe
19	1580	WScript.exe
28	1580	WScript.exe
41	1580	WScript.exe
45	1580	WScript.exe
57	1580	WScript.exe
58	1580	WScript.exe

Checks computer location settings 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

b6e0c17a224fe0df6f58add122e0420aad76a697c1d7634aa0cfe2f5dc84dc2b.exewscript.exewscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	b6e0c17a224fe0df6f58add122e0420aad76a697c1d7634aa0cfe2f5dc84dc2b.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 3 IoCs

Processes:

wscript.exewscript.exeWScript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lRDdN.vbs	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lRDdN.vbs	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windows.js	WScript.exe

Adds Run key to start application 2 TTPs 10 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exewscript.exeWScript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lRDdN = "wscript.exe //B \"C:\\Users\\Admin\\lRDdN.vbs\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\WOW6432Node\microsoft\windows\currentversion\run	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lRDdN = "wscript.exe //B \"C:\\Users\\Admin\\lRDdN.vbs\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\WOW6432Node\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\lRDdN = "wscript.exe //B \"C:\\Users\\Admin\\lRDdN.vbs\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\BXBCC2V24Z = "\"C:\\Users\\Admin\\AppData\\Roaming\\windows.js\""	WScript.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\lRDdN = "wscript.exe //B \"C:\\Users\\Admin\\lRDdN.vbs\""	wscript.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings	wscript.exe

Script User-Agent 4 IoCs

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

Processes:

description	flow	ioc
HTTP User-Agent header	9	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	14	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	16	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	8	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

b6e0c17a224fe0df6f58add122e0420aad76a697c1d7634aa0cfe2f5dc84dc2b.exewscript.exewscript.exe

description	pid	process	target process
PID 4400 wrote to memory of 4148	4400	b6e0c17a224fe0df6f58add122e0420aad76a697c1d7634aa0cfe2f5dc84dc2b.exe	wscript.exe
PID 4400 wrote to memory of 4148	4400	b6e0c17a224fe0df6f58add122e0420aad76a697c1d7634aa0cfe2f5dc84dc2b.exe	wscript.exe
PID 4400 wrote to memory of 4148	4400	b6e0c17a224fe0df6f58add122e0420aad76a697c1d7634aa0cfe2f5dc84dc2b.exe	wscript.exe
PID 4148 wrote to memory of 4152	4148	wscript.exe	wscript.exe
PID 4148 wrote to memory of 4152	4148	wscript.exe	wscript.exe
PID 4148 wrote to memory of 4152	4148	wscript.exe	wscript.exe
PID 4152 wrote to memory of 1580	4152	wscript.exe	WScript.exe
PID 4152 wrote to memory of 1580	4152	wscript.exe	WScript.exe
PID 4152 wrote to memory of 1580	4152	wscript.exe	WScript.exe

C:\Users\Admin\AppData\Local\Temp\b6e0c17a224fe0df6f58add122e0420aad76a697c1d7634aa0cfe2f5dc84dc2b.exe
"C:\Users\Admin\AppData\Local\Temp\b6e0c17a224fe0df6f58add122e0420aad76a697c1d7634aa0cfe2f5dc84dc2b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4400

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Roaming\lRDdN.vbs"
2⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4148

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\lRDdN.vbs"
3⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4152

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\windows.js"
4⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1580

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

Web Service

1

T1102

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lRDdN.vbs
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lRDdN.vbs
Filesize
185KB

MD5
43fca5129026c9b6b49ce26c27759df2

SHA1
46a4acdd5faae42e04ba753f69e6e777324ae8e9

SHA256
a6772f8687d81d92138a6cfa10ead2b3c409a0884053a1600c640ae65eea517e

SHA512
c465b24ebba4ce399e7e8605b8b93993e92916b653c42c470e9168a8a9573bfc42bb1dc730674e1fc7656453820fc3a19240514c1bd2b8acf32d87ffa09cf228

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windows.js
Filesize
3KB

MD5
14d1d9d3dc5e8d0eac04d5b78645a2ea

SHA1
aa14b5a613919e41c4d97fef48ff1a24ff06fd2b

SHA256
92d5609974d3d52dc028185e819111679f0ff052c1e3b951e2eee9b18e361f36

SHA512
e13cc2ca8b4dc4564a2176e4bc06d2a3271a957918cb84589402462ea2fe33782eb92ab1575187ab07ac3e270e8301607bff6b7ccb1dd688666be940716f092c

Download Submit
C:\Users\Admin\AppData\Roaming\lRDdN.vbs
Filesize
185KB

MD5
43fca5129026c9b6b49ce26c27759df2

SHA1
46a4acdd5faae42e04ba753f69e6e777324ae8e9

SHA256
a6772f8687d81d92138a6cfa10ead2b3c409a0884053a1600c640ae65eea517e

SHA512
c465b24ebba4ce399e7e8605b8b93993e92916b653c42c470e9168a8a9573bfc42bb1dc730674e1fc7656453820fc3a19240514c1bd2b8acf32d87ffa09cf228

Download Submit
C:\Users\Admin\lRDdN.vbs
Filesize
185KB

MD5
43fca5129026c9b6b49ce26c27759df2

SHA1
46a4acdd5faae42e04ba753f69e6e777324ae8e9

SHA256
a6772f8687d81d92138a6cfa10ead2b3c409a0884053a1600c640ae65eea517e

SHA512
c465b24ebba4ce399e7e8605b8b93993e92916b653c42c470e9168a8a9573bfc42bb1dc730674e1fc7656453820fc3a19240514c1bd2b8acf32d87ffa09cf228

Download Submit
C:\Users\Admin\windows.js
Filesize
3KB

MD5
14d1d9d3dc5e8d0eac04d5b78645a2ea

SHA1
aa14b5a613919e41c4d97fef48ff1a24ff06fd2b

SHA256
92d5609974d3d52dc028185e819111679f0ff052c1e3b951e2eee9b18e361f36

SHA512
e13cc2ca8b4dc4564a2176e4bc06d2a3271a957918cb84589402462ea2fe33782eb92ab1575187ab07ac3e270e8301607bff6b7ccb1dd688666be940716f092c

Download Submit
memory/4400-133-0x0000000001510000-0x0000000001520000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads