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 27 IoCs

flow	pid	Process
7	4712	wscript.exe
12	2784	wscript.exe
16	2784	wscript.exe
18	2784	wscript.exe
24	2784	wscript.exe
29	2784	wscript.exe
32	2784	wscript.exe
34	2784	wscript.exe
35	2784	wscript.exe
36	2784	wscript.exe
38	2784	wscript.exe
39	2784	wscript.exe
43	2784	wscript.exe
46	2784	wscript.exe
47	2784	wscript.exe
51	2784	wscript.exe
55	2784	wscript.exe
56	2784	wscript.exe
57	2784	wscript.exe
58	2784	wscript.exe
59	2784	wscript.exe
60	2784	wscript.exe
64	2784	wscript.exe
65	2784	wscript.exe
66	2784	wscript.exe
67	2784	wscript.exe
68	2784	wscript.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-1675742406-747946869-1029867430-1000\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\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
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-1-5-21-1675742406-747946869-1029867430-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\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-1-5-21-1675742406-747946869-1029867430-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\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

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
15	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 26 IoCs

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

description	flow	ioc
HTTP User-Agent header	58	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	67	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	18	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	24	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	29	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	35	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	46	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	47	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	57	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	59	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	12	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	32	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	39	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	43	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	60	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	65	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	66	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	68	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	56	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	36	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	38	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	51	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	55	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	7	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	34	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	64	WSHRAT\|D0F59775\|TPAVZECK\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 30/3/2023\|JavaScript-v3.4\|IN:India

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4712 wrote to memory of 2784	4712	wscript.exe	85
PID 4712 wrote to memory of 2784	4712	wscript.exe	85

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Scan0043.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4712
- 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:2784

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

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\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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