wshrat | d295442674b1989fd65dea6a56081467424365f1c43ef9b74bff7fdb0f0c77ec

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

C2

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 14 IoCs

flow	pid	Process
4	544	wscript.exe
6	544	wscript.exe
10	544	wscript.exe
11	544	wscript.exe
12	544	wscript.exe
14	544	wscript.exe
15	544	wscript.exe
16	544	wscript.exe
18	544	wscript.exe
19	544	wscript.exe
20	544	wscript.exe
22	544	wscript.exe
23	544	wscript.exe
24	544	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
3	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 11 IoCs

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

description	flow	ioc
HTTP User-Agent header	10	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	15	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	19	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	20	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	22	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	23	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	12	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	14	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	16	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	18	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	24	WSHRAT\|9CA37D4D\|YBHADZIG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 17/5/2023\|JavaScript-v3.4\|IN:India

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 544	1660	wscript.exe	28
PID 1660 wrote to memory of 544	1660	wscript.exe	28
PID 1660 wrote to memory of 544	1660	wscript.exe	28

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Tax Returns of R58,765.js"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1660
- 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:544

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\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

Analysis

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