wshrat | 159f8bf05cfb8aa77a15523e0f957dc5d596ec4268564a09e9adcce902b6036d

General

Target

Scan0043.js
Size

984KB
MD5

faa1349089a33676434cc9deca10bf7d
SHA1

ebf43f904829f0f81d734db58b1d2f5e393df22c
SHA256

159f8bf05cfb8aa77a15523e0f957dc5d596ec4268564a09e9adcce902b6036d
SHA512

9802e518a0e22d0e54398603d726360f31293586b6820f933a8d93e38ddda4b56ee34ac17ce7e9d5485b556127535d7c84eac5d29dd8c1fb2ce6c709d639c8dc
SSDEEP

6144:2pkargZWNhPwMGdrez1TsuwzpZSSTuiIu8uzfOgw8Y5PW+KZZJ/26KWKMeihf/nm:u

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 26 IoCs

flow	pid	Process
2	1060	wscript.exe
3	1464	wscript.exe
7	1464	wscript.exe
8	1464	wscript.exe
9	1464	wscript.exe
10	1464	wscript.exe
12	1464	wscript.exe
14	1464	wscript.exe
15	1464	wscript.exe
17	1464	wscript.exe
18	1464	wscript.exe
19	1464	wscript.exe
21	1464	wscript.exe
22	1464	wscript.exe
23	1464	wscript.exe
25	1464	wscript.exe
26	1464	wscript.exe
27	1464	wscript.exe
29	1464	wscript.exe
30	1464	wscript.exe
31	1464	wscript.exe
33	1464	wscript.exe
34	1464	wscript.exe
35	1464	wscript.exe
37	1464	wscript.exe
38	1464	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Scan0043.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Scan0043.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
Key created	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows\CurrentVersion\Run\Scan0043 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Scan0043.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Scan0043 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Scan0043.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows\CurrentVersion\Run\Scan0043 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Scan0043.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Scan0043 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Scan0043.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
6	ip-api.com

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

System Information Discovery
T1082

Script User-Agent 25 IoCs

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

description	flow	ioc
HTTP User-Agent header	23	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	26	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	29	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	31	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	35	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	8	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	9	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	21	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	22	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	27	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	10	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	12	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	14	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	17	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	19	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	30	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	34	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	37	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	2	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	3	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	25	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	33	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	38	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	15	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	18	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1060 wrote to memory of 1464	1060	wscript.exe	28
PID 1060 wrote to memory of 1464	1060	wscript.exe	28
PID 1060 wrote to memory of 1464	1060	wscript.exe	28

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Scan0043.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1060
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Scan0043.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:1464

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Scan0043.js

Filesize
984KB

MD5
faa1349089a33676434cc9deca10bf7d

SHA1
ebf43f904829f0f81d734db58b1d2f5e393df22c

SHA256
159f8bf05cfb8aa77a15523e0f957dc5d596ec4268564a09e9adcce902b6036d

SHA512
9802e518a0e22d0e54398603d726360f31293586b6820f933a8d93e38ddda4b56ee34ac17ce7e9d5485b556127535d7c84eac5d29dd8c1fb2ce6c709d639c8dc

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Scan0043.js

Filesize
984KB

MD5
faa1349089a33676434cc9deca10bf7d

SHA1
ebf43f904829f0f81d734db58b1d2f5e393df22c

SHA256
159f8bf05cfb8aa77a15523e0f957dc5d596ec4268564a09e9adcce902b6036d

SHA512
9802e518a0e22d0e54398603d726360f31293586b6820f933a8d93e38ddda4b56ee34ac17ce7e9d5485b556127535d7c84eac5d29dd8c1fb2ce6c709d639c8dc

Download Submit
C:\Users\Admin\AppData\Roaming\Scan0043.js

Filesize
984KB

MD5
faa1349089a33676434cc9deca10bf7d

SHA1
ebf43f904829f0f81d734db58b1d2f5e393df22c

SHA256
159f8bf05cfb8aa77a15523e0f957dc5d596ec4268564a09e9adcce902b6036d

SHA512
9802e518a0e22d0e54398603d726360f31293586b6820f933a8d93e38ddda4b56ee34ac17ce7e9d5485b556127535d7c84eac5d29dd8c1fb2ce6c709d639c8dc

Download Submit

Analysis

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