wshrat | 3aba14649b590ad2ae66902bcb8f5411ec579df5de9e7edb543eafe1183eeec7

General

Target

d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb.js
Size

217KB
MD5

2852bd566a1ec01b41c53e4e738c6f4a
SHA1

f777cd9e907866bfb9e5513c94fc84f2dcd2cd3a
SHA256

d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb
SHA512

f1a75eb649375c2dd18072977e8ebd04988c705a3ecbca10e5cf5bda1e5886e26d66380467d221efbbaf3137128fda8fe62af61f728769dd47abfd79bf0f7e17
SSDEEP

6144:PpHgleX3reXhf6Z9pQDBvR4nRHFPAeRJAklgF2GuuZl:huf6ZUDJ6nlTrl029A

Score

10^/10

wshrat execution 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
behavioral1/files/0x0008000000012102-2.dat	family_wshrat
behavioral1/files/0x0008000000016c53-3.dat	family_wshrat

Wshrat family
wshrat

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	1788	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb.js	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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb.js\""	wscript.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

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

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 1788	1860	wscript.exe	30
PID 1860 wrote to memory of 1788	1860	wscript.exe	30
PID 1860 wrote to memory of 1788	1860	wscript.exe	30

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb.js
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1860
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:1788

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb.js

Filesize
217KB

MD5
1cfa0638231ea342d5c4b7e6152a3ddb

SHA1
1a8d8d1966fa6f21576f266725d9f8c15ccadc90

SHA256
43ba3d53e67b2e59e3c53e762d2614b67e283cb478222f888796976de8c04148

SHA512
0b2c9ca230abb34b9c378377bdf19cf9b3370db601a5cd78af218f456d1a23ef68efc592ff121802c090062d2654bd509587d9be16f139c82f864a241e1d0623

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C:\Users\Admin\AppData\Roaming\d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb.js

Filesize
217KB

MD5
2852bd566a1ec01b41c53e4e738c6f4a

SHA1
f777cd9e907866bfb9e5513c94fc84f2dcd2cd3a

SHA256
d56c3c009248c55acb99fa5d7c66ca8d6555a3559b66b69aeff99327aa9e2beb

SHA512
f1a75eb649375c2dd18072977e8ebd04988c705a3ecbca10e5cf5bda1e5886e26d66380467d221efbbaf3137128fda8fe62af61f728769dd47abfd79bf0f7e17

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads