wshrat | d295442674b1989fd65dea6a56081467424365f1c43ef9b74bff7fdb0f0c77ec

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
17/05/2023, 15:31

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General

Target

Tax Returns of R58,765.js
Size

990KB
MD5

9f0fc6d60f36df9301170a6ec0d3f408
SHA1

88ce1c32a1f7c18f34acf969e839ec4882e1428f
SHA256

d295442674b1989fd65dea6a56081467424365f1c43ef9b74bff7fdb0f0c77ec
SHA512

ddcd02d4b33bc0af4c5f4112ea7d00cef17dc56f0dd90ed8fb5ae0355ff7fb9c7a627f7f4f522954302abe27dee83dcb166f98735b5b49275810d017f2521293
SSDEEP

3072:QQIC0ry/lGgq1YRZILn3cl3hkdMnmxfHtnPr:QQIC0ry/lGgq1YR7y

Score

10^/10

wshrat trojan

Malware Config

Extracted

Family

wshrat

http://harold.2waky.com:3609

Signatures

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

Blocklisted process makes network request 15 IoCs

flow	pid	Process
7	2872	wscript.exe
9	2872	wscript.exe
15	2872	wscript.exe
17	2872	wscript.exe
29	2872	wscript.exe
34	2872	wscript.exe
42	2872	wscript.exe
51	2872	wscript.exe
53	2872	wscript.exe
55	2872	wscript.exe
56	2872	wscript.exe
57	2872	wscript.exe
59	2872	wscript.exe
61	2872	wscript.exe
62	2872	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-1-5-21-4238149048-355649189-894321705-1000\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\Tax Returns of R58,765.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Tax Returns of R58,765.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).

System Information Discovery
T1082

Script User-Agent 10 IoCs

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

description	flow	ioc
HTTP User-Agent header	55	WSHRAT\|A889F529\|WEYPCEWN\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	59	WSHRAT\|A889F529\|WEYPCEWN\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	61	WSHRAT\|A889F529\|WEYPCEWN\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	9	WSHRAT\|A889F529\|WEYPCEWN\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	15	WSHRAT\|A889F529\|WEYPCEWN\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	29	WSHRAT\|A889F529\|WEYPCEWN\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	34	WSHRAT\|A889F529\|WEYPCEWN\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	53	WSHRAT\|A889F529\|WEYPCEWN\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	17	WSHRAT\|A889F529\|WEYPCEWN\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	56	WSHRAT\|A889F529\|WEYPCEWN\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 2872	1224	wscript.exe	83
PID 1224 wrote to memory of 2872	1224	wscript.exe	83

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Tax Returns of R58,765.js"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Tax Returns of R58,765.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:2872

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

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\Tax Returns of R58,765.js

Filesize
990KB

MD5
9f0fc6d60f36df9301170a6ec0d3f408

SHA1
88ce1c32a1f7c18f34acf969e839ec4882e1428f

SHA256
d295442674b1989fd65dea6a56081467424365f1c43ef9b74bff7fdb0f0c77ec

SHA512
ddcd02d4b33bc0af4c5f4112ea7d00cef17dc56f0dd90ed8fb5ae0355ff7fb9c7a627f7f4f522954302abe27dee83dcb166f98735b5b49275810d017f2521293

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Tax Returns of R58,765.js

Filesize
990KB

MD5
9f0fc6d60f36df9301170a6ec0d3f408

SHA1
88ce1c32a1f7c18f34acf969e839ec4882e1428f

SHA256
d295442674b1989fd65dea6a56081467424365f1c43ef9b74bff7fdb0f0c77ec

SHA512
ddcd02d4b33bc0af4c5f4112ea7d00cef17dc56f0dd90ed8fb5ae0355ff7fb9c7a627f7f4f522954302abe27dee83dcb166f98735b5b49275810d017f2521293

Download Submit
C:\Users\Admin\AppData\Roaming\Tax Returns of R58,765.js

Filesize
990KB

MD5
9f0fc6d60f36df9301170a6ec0d3f408

SHA1
88ce1c32a1f7c18f34acf969e839ec4882e1428f

SHA256
d295442674b1989fd65dea6a56081467424365f1c43ef9b74bff7fdb0f0c77ec

SHA512
ddcd02d4b33bc0af4c5f4112ea7d00cef17dc56f0dd90ed8fb5ae0355ff7fb9c7a627f7f4f522954302abe27dee83dcb166f98735b5b49275810d017f2521293

Download Submit