wshrat | b32f3e7d67e21bf2d40dec620a6f2a1b471847af427f924ed28b72633b9b6c40

General

Target

05212023840.js
Size

1.0MB
MD5

9ccea994750b4d63ec5ef4a705f4855e
SHA1

334b5f78ce8d2a73fdb551acd389991552c39b3b
SHA256

b32f3e7d67e21bf2d40dec620a6f2a1b471847af427f924ed28b72633b9b6c40
SHA512

736c4ad5122bf6da2cb3adedebeea007f39f707b661f651114ea08cf33521c916e1a802701f4ea1e71767e78f913ddd0b01cfeb97b407a8a2b20d2e4c6f5079c
SSDEEP

3072:Cm0EaAcTqGaSqBHJZieEDQjb98Ztp8i8Jkzh:Cm0EaAcTqGaSqBHJZutUGzh

Score

10^/10

wshrat persistence trojan

Malware Config

Extracted

Family

wshrat

C2

http://45.90.222.125:7121

Signatures

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

Blocklisted process makes network request 16 IoCs

flow	pid	Process
2	1208	wscript.exe
5	1208	wscript.exe
6	2008	wscript.exe
11	2008	wscript.exe
12	2008	wscript.exe
13	2008	wscript.exe
16	2008	wscript.exe
17	2008	wscript.exe
19	2008	wscript.exe
20	2008	wscript.exe
21	2008	wscript.exe
23	2008	wscript.exe
24	2008	wscript.exe
25	2008	wscript.exe
27	2008	wscript.exe
28	2008	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\05212023840.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\05212023840.js	wscript.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\05212023840 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\05212023840.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Windows\CurrentVersion\Run\05212023840 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\05212023840.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\05212023840 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\05212023840.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Windows\CurrentVersion\Run\05212023840 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\05212023840.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	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
10	ip-api.com

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

System Information Discovery
T1082

Script User-Agent 12 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	28	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 22/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	6	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	24	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 22/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	27	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 22/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	19	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 22/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	20	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 22/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	21	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 22/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	23	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 22/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	25	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 22/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	5	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	12	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 22/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	17	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 22/5/2023\|JavaScript-v3.4\|IN:India

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 2008	1208	wscript.exe	29
PID 1208 wrote to memory of 2008	1208	wscript.exe	29
PID 1208 wrote to memory of 2008	1208	wscript.exe	29

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\05212023840.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\05212023840.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:2008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\05212023840.js

Filesize
1.0MB

MD5
9ccea994750b4d63ec5ef4a705f4855e

SHA1
334b5f78ce8d2a73fdb551acd389991552c39b3b

SHA256
b32f3e7d67e21bf2d40dec620a6f2a1b471847af427f924ed28b72633b9b6c40

SHA512
736c4ad5122bf6da2cb3adedebeea007f39f707b661f651114ea08cf33521c916e1a802701f4ea1e71767e78f913ddd0b01cfeb97b407a8a2b20d2e4c6f5079c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\05212023840.js

Filesize
1.0MB

MD5
9ccea994750b4d63ec5ef4a705f4855e

SHA1
334b5f78ce8d2a73fdb551acd389991552c39b3b

SHA256
b32f3e7d67e21bf2d40dec620a6f2a1b471847af427f924ed28b72633b9b6c40

SHA512
736c4ad5122bf6da2cb3adedebeea007f39f707b661f651114ea08cf33521c916e1a802701f4ea1e71767e78f913ddd0b01cfeb97b407a8a2b20d2e4c6f5079c

Download Submit

Analysis

Sharing