wshrat | 2371c47f96686c70eb365d46020b6a03e32f69d2f14e3b98b6de394d72e699bd

General

Target

PRODUCT_INQUIRY.js
Size

7KB
MD5

41b3e3fe16a95095c6027551de97fe56
SHA1

4ab637d7586c39ebe0938cc01c1b78a4e74cf523
SHA256

2371c47f96686c70eb365d46020b6a03e32f69d2f14e3b98b6de394d72e699bd
SHA512

e9fb8db66b646aeef7c107730f91e037c67a5891fd4ff4db6cbfa39717f819d98dd7202286d1d1437982f14fb32fb56b3ff4de923fd32753c2d2ab7d725e6914
SSDEEP

192:toauNMBVGFVsSvSLauwmS4aaSqOGwmC1CPqau0K+aq18aU4Vmnaujl5waJf4l:toauNMBVGFVsSvSLauwmS4aaSqOGwmCw

Score

10^/10

wshrat execution persistence trojan

Malware Config

Extracted

Family

wshrat

C2

http://chongmei33.publicvm.com:7045

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
2	1556	wscript.exe
14	2424	wscript.exe
28	2424	wscript.exe
35	2424	wscript.exe
36	2424	wscript.exe
37	2424	wscript.exe
48	2424	wscript.exe
52	2424	wscript.exe
53	2424	wscript.exe
54	2424	wscript.exe
55	2424	wscript.exe
58	2424	wscript.exe
63	2424	wscript.exe
65	2424	wscript.exe
66	2424	wscript.exe
67	2424	wscript.exe
70	2424	wscript.exe
75	2424	wscript.exe
87	2424	wscript.exe
89	2424	wscript.exe
90	2424	wscript.exe
91	2424	wscript.exe
92	2424	wscript.exe
93	2424	wscript.exe
94	2424	wscript.exe
95	2424	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\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\ROBLPT.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ROBLPT.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ROBLPT = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\ROBLPT.vbs\""	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ROBLPT = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\ROBLPT.vbs\""	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ROBLPT = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\ROBLPT.vbs\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ROBLPT = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\ROBLPT.vbs\""	wscript.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1580	taskkill.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings	wscript.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1580	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1556 wrote to memory of 3436	1556	wscript.exe	86
PID 1556 wrote to memory of 3436	1556	wscript.exe	86
PID 3436 wrote to memory of 2424	3436	WScript.exe	87
PID 3436 wrote to memory of 2424	3436	WScript.exe	87
PID 2424 wrote to memory of 2736	2424	wscript.exe	90
PID 2424 wrote to memory of 2736	2424	wscript.exe	90
PID 2736 wrote to memory of 1580	2736	cmd.exe	92
PID 2736 wrote to memory of 1580	2736	cmd.exe	92

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\PRODUCT_INQUIRY.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1556
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\ROBLPT.vbs"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:3436
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\ROBLPT.vbs"
    3⤵
    - Blocklisted process makes network request
    - Checks computer location settings
    - Drops startup file
    - Adds Run key to start application
    - Suspicious use of WriteProcessMemory
    PID:2424
  - - C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe" /c taskkill /F /IM kl-plugin.exe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2736
    - - C:\Windows\system32\taskkill.exe
        
        taskkill /F /IM kl-plugin.exe
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

JavaScript

1

T1059.007

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\ROBLPT.vbs

Filesize
194KB

MD5
c637f2b07dc8994b2b2cbef69f0138f0

SHA1
dd075b266a20b9e0b30ae54b32a9db8c597c87df

SHA256
9b2bcffb74eaa74e8e380656789d2afe9559db1b8e723f8a522f3871a1261167

SHA512
53a8e83fbff7c3c57ae6983129ece1dbf6420632d37174230f029ac13c6d24a541b8c4880045a137f5558b7877a1ae539282fb3bb1871833aee4e383a9a0f2aa

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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