wshrat | 70485d4f6c3c72f2cb5df9b62858652cc9e87751fed8bad111383a12e09747bf

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 01:40

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General

Target
25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs
Size 19KB
Sample240325-b3sg1ace48
SHA256 25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e
MD5 433febbbc8e5d0eeed7b3aaa9ad15558
SHA1 83905f45e2c6977f35e7db522052295d739fd667
SHA512 6cae2f6e7b86052af6f812e815128f67ce76f44e56b9bfdb5e4fa0ce2fba5610deb830334162b330e5e494bece380d1f7e053f6f89eac398d48fe49cbb3626ec
SSDEEP 384:vKNssJiGagRYwZSFFOECXCghDStXdTX2XXXiXs31TNWE/cJ1:vq9agRYwZSGECXCgM7rGHqc1IE/m
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wshrat persistence trojan

Malware Config

Extracted

Family

wshrat

http://paulrdp02.duckdns.org:1604

Signatures

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

Blocklisted process makes network request 25 IoCs

flow	pid	Process
5	4192	wscript.exe
34	4192	wscript.exe
45	4192	wscript.exe
56	4192	wscript.exe
61	4192	wscript.exe
74	4192	wscript.exe
86	4192	wscript.exe
124	4192	wscript.exe
130	4192	wscript.exe
138	4192	wscript.exe
142	4192	wscript.exe
153	4192	wscript.exe
159	4192	wscript.exe
173	4192	wscript.exe
183	4192	wscript.exe
185	4192	wscript.exe
196	4192	wscript.exe
200	4192	wscript.exe
207	4192	wscript.exe
209	4192	wscript.exe
229	4192	wscript.exe
237	4192	wscript.exe
245	4192	wscript.exe
250	4192	wscript.exe
255	4192	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\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\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs	wscript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs\""	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs\""	WScript.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4816 wrote to memory of 4192	4816	WScript.exe	87
PID 4816 wrote to memory of 4192	4816	WScript.exe	87

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4816
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:4192

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs

Path C:\Users\Admin\AppData\Roaming\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs
Size 19KB
SHA256 25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e
MD5 433febbbc8e5d0eeed7b3aaa9ad15558
SHA1 83905f45e2c6977f35e7db522052295d739fd667
SHA512 6cae2f6e7b86052af6f812e815128f67ce76f44e56b9bfdb5e4fa0ce2fba5610deb830334162b330e5e494bece380d1f7e053f6f89eac398d48fe49cbb3626ec
SSDEEP 384:vKNssJiGagRYwZSFFOECXCghDStXdTX2XXXiXs31TNWE/cJ1:vq9agRYwZSGECXCgM7rGHqc1IE/m
MD5 SHA1 SHA512 SSDEEP

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads