wshrat | bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e

General

Target
bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e.js
Size 31KB
Sample220611-3svcdshfg3
SHA256 bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e
MD5 131f2039f2540ffeb111c1463216c00d
SHA1 309597882bb9af50370ac2dfee689b3e35fe3d30
SHA512 cbfea3ae3afa933655a2868e693257f6c6780041ca3a18ddb7aacedbd292f65ad86ee756c164814773209b557f8c3422349c724e2f5ed13ee0ab4efbbd86e16d
MD5 SHA1 SHA512

Score

10^/10

wshrat persistence trojan

Malware Config

Signatures

WSHRAT
WSHRAT is a variant of Houdini worm and has vbs and js variants.
trojan wshrat

WSHRAT Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231dd-131.dat	family_wshrat
behavioral2/files/0x00070000000231e0-132.dat	family_wshrat

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e.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-1-5-21-3751123196-3323558407-1869646069-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e.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

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 3416	2360	wscript.exe	81
PID 2360 wrote to memory of 3416	2360	wscript.exe	81

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e.js
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:3416

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e.js

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e.js
Size 31KB
SHA256 bd2600ea00f48eb9eb5ca6cbe56c262e6d20996d025034d6aeb20c618580512e
MD5 131f2039f2540ffeb111c1463216c00d
SHA1 309597882bb9af50370ac2dfee689b3e35fe3d30
SHA512 cbfea3ae3afa933655a2868e693257f6c6780041ca3a18ddb7aacedbd292f65ad86ee756c164814773209b557f8c3422349c724e2f5ed13ee0ab4efbbd86e16d
SSDEEP 768:OnYE16mOxULdOUTH1JvjR/orsmdLKa/oZ3cIDJlsK333MhPh7InyZG9iiSGPcGW5:3E4mOxULdOUTH1p9/or3/oPP3MhPpI9C
MD5 SHA1 SHA512 SSDEEP

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