wshrat | 25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e

General

Target

25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs
Size

19KB
MD5

433febbbc8e5d0eeed7b3aaa9ad15558
SHA1

83905f45e2c6977f35e7db522052295d739fd667
SHA256

25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e
SHA512

6cae2f6e7b86052af6f812e815128f67ce76f44e56b9bfdb5e4fa0ce2fba5610deb830334162b330e5e494bece380d1f7e053f6f89eac398d48fe49cbb3626ec
SSDEEP

384:vKNssJiGagRYwZSFFOECXCghDStXdTX2XXXiXs31TNWE/cJ1:vq9agRYwZSGECXCgM7rGHqc1IE/m

Score

10^/10

wshrat persistence trojan

Malware Config

Extracted

Family

wshrat

C2

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 26 IoCs

flow	pid	Process
7	2208	wscript.exe
44	2208	wscript.exe
52	2208	wscript.exe
55	2208	wscript.exe
64	2208	wscript.exe
71	2208	wscript.exe
77	2208	wscript.exe
86	2208	wscript.exe
96	2208	wscript.exe
107	2208	wscript.exe
120	2208	wscript.exe
123	2208	wscript.exe
125	2208	wscript.exe
133	2208	wscript.exe
134	2208	wscript.exe
135	2208	wscript.exe
144	2208	wscript.exe
154	2208	wscript.exe
168	2208	wscript.exe
176	2208	wscript.exe
178	2208	wscript.exe
179	2208	wscript.exe
182	2208	wscript.exe
188	2208	wscript.exe
194	2208	wscript.exe
209	2208	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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\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\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-1-5-21-609813121-2907144057-1731107329-1000\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-1-5-21-609813121-2907144057-1731107329-1000\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

Kills process with taskkill 2 IoCs

evasion

pid	Process
4272	taskkill.exe
3928	taskkill.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4272	taskkill.exe
Token: SeDebugPrivilege	3928	taskkill.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4268 wrote to memory of 2208	4268	WScript.exe	87
PID 4268 wrote to memory of 2208	4268	WScript.exe	87
PID 2208 wrote to memory of 4260	2208	wscript.exe	102
PID 2208 wrote to memory of 4260	2208	wscript.exe	102
PID 4260 wrote to memory of 4272	4260	cmd.exe	104
PID 4260 wrote to memory of 4272	4260	cmd.exe	104
PID 2208 wrote to memory of 4168	2208	wscript.exe	113
PID 2208 wrote to memory of 4168	2208	wscript.exe	113
PID 4168 wrote to memory of 3928	4168	cmd.exe	115
PID 4168 wrote to memory of 3928	4168	cmd.exe	115

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:4268
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.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:2208
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c taskkill /F /IM kl-plugin.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4260
  - - C:\Windows\system32\taskkill.exe
      taskkill /F /IM kl-plugin.exe
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:4272
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c taskkill /F /IM kl-plugin.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4168
  - - C:\Windows\system32\taskkill.exe
      taskkill /F /IM kl-plugin.exe
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:3928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e.vbs

Filesize
19KB

MD5
433febbbc8e5d0eeed7b3aaa9ad15558

SHA1
83905f45e2c6977f35e7db522052295d739fd667

SHA256
25b4135b1c971889bcf7b36da063ea24025e2a67e22b3dd84ebb8f556b75823e

SHA512
6cae2f6e7b86052af6f812e815128f67ce76f44e56b9bfdb5e4fa0ce2fba5610deb830334162b330e5e494bece380d1f7e053f6f89eac398d48fe49cbb3626ec

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads