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 23 IoCs

flow	pid	Process
2	1308	wscript.exe
3	576	wscript.exe
7	576	wscript.exe
8	576	wscript.exe
9	576	wscript.exe
10	576	wscript.exe
12	576	wscript.exe
14	576	wscript.exe
15	576	wscript.exe
17	576	wscript.exe
18	576	wscript.exe
19	576	wscript.exe
21	576	wscript.exe
22	576	wscript.exe
23	576	wscript.exe
25	576	wscript.exe
26	576	wscript.exe
27	576	wscript.exe
29	576	wscript.exe
30	576	wscript.exe
31	576	wscript.exe
33	576	wscript.exe
34	576	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js	wscript.exe
File opened for modification	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-1-5-21-2647223082-2067913677-935928954-1000\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-1-5-21-2647223082-2067913677-935928954-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\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-1-5-21-2647223082-2067913677-935928954-1000\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
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 22 IoCs

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

description	flow	ioc
HTTP User-Agent header	14	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	17	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	26	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	33	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	34	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	3	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	8	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	12	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	18	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	22	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	29	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	30	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	31	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	2	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	9	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	15	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	23	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	10	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	19	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	21	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	25	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	27	WSHRAT\|7031BB36\|BPOQNXYB\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 28/3/2023\|JavaScript-v3.4\|IN:India

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1308 wrote to memory of 576	1308	wscript.exe	29
PID 1308 wrote to memory of 576	1308	wscript.exe	29
PID 1308 wrote to memory of 576	1308	wscript.exe	29

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1308
- 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:576

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

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Downloads

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

Filesize
1.1MB

MD5
50b25d9512c8d025c67a78e308bb9209

SHA1
4a2ba2d3affdb9a1e1b1d86e6288634863767f17

SHA256
4f0ee7a605c3146b8b82a12c705c8417a1ea4d7e4bf8b5b2a5107077332e7cab

SHA512
f574c2bd9cf3cc93de0c3ad00d8cd0c3ae67642c2fa64f412691ab17e3ddb1cffa911a4a0795bde3ce45ce98560b9fdfc9f18109dab1a701339ff7630f1aa204

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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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