wshrat | 4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab

General

Target

4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js
Size

1.1MB
MD5

50b25d9512c8d025c67a78e308bb9209
SHA1

4a2ba2d3affdb9a1e1b1d86e6288634863767f17
SHA256

4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab
SHA512

f574c2bd9cf3cc93de0c3ad00d8cd0c3ae67642c2fa64f412691ab17e3ddb1cffa911a4a0795bde3ce45ce98560b9fdfc9f18109dab1a701339ff7630f1aa204
SSDEEP

3072:+iXNHOXPsYfG+ri3fuECn/AHbc5j6+2LXlevxY14FF3iLU5zLR2:+iXNHOXPsYfG+ri3fudQ

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 24 IoCs

flow	pid	Process
5	2864	wscript.exe
11	3324	wscript.exe
20	3324	wscript.exe
21	3324	wscript.exe
24	3324	wscript.exe
31	3324	wscript.exe
36	3324	wscript.exe
43	3324	wscript.exe
46	3324	wscript.exe
50	3324	wscript.exe
51	3324	wscript.exe
55	3324	wscript.exe
56	3324	wscript.exe
57	3324	wscript.exe
58	3324	wscript.exe
60	3324	wscript.exe
62	3324	wscript.exe
63	3324	wscript.exe
64	3324	wscript.exe
65	3324	wscript.exe
66	3324	wscript.exe
67	3324	wscript.exe
68	3324	wscript.exe
69	3324	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-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.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\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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
19	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 23 IoCs

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

description	flow	ioc
HTTP User-Agent header	24	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	36	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	43	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	46	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	50	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	62	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	64	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	67	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	11	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	31	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	55	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	56	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	58	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	66	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	68	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	5	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	21	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	60	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	63	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	65	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	69	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	51	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	57	WSHRAT\|78F0674A\|HCIDPJOT\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2864 wrote to memory of 3324	2864	wscript.exe	84
PID 2864 wrote to memory of 3324	2864	wscript.exe	84

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.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:2864
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:3324

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js

Filesize
1.1MB

MD5
50b25d9512c8d025c67a78e308bb9209

SHA1
4a2ba2d3affdb9a1e1b1d86e6288634863767f17

SHA256
4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab

SHA512
f574c2bd9cf3cc93de0c3ad00d8cd0c3ae67642c2fa64f412691ab17e3ddb1cffa911a4a0795bde3ce45ce98560b9fdfc9f18109dab1a701339ff7630f1aa204

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js

Filesize
1.1MB

MD5
50b25d9512c8d025c67a78e308bb9209

SHA1
4a2ba2d3affdb9a1e1b1d86e6288634863767f17

SHA256
4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab

SHA512
f574c2bd9cf3cc93de0c3ad00d8cd0c3ae67642c2fa64f412691ab17e3ddb1cffa911a4a0795bde3ce45ce98560b9fdfc9f18109dab1a701339ff7630f1aa204

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js

Filesize
1.1MB

MD5
50b25d9512c8d025c67a78e308bb9209

SHA1
4a2ba2d3affdb9a1e1b1d86e6288634863767f17

SHA256
4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab

SHA512
f574c2bd9cf3cc93de0c3ad00d8cd0c3ae67642c2fa64f412691ab17e3ddb1cffa911a4a0795bde3ce45ce98560b9fdfc9f18109dab1a701339ff7630f1aa204

Download Submit

Analysis

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