wshrat | 711cde8967739737b59a8ea4a2f3105611b27ea839e7289baedd7840059d4797

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Analysis

max time kernel
34s
max time network
34s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 12:49

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General

Target

Tax Returns of R48_765.js
Size

957KB
MD5

0f597e6821a29bc87b36222f08eff311
SHA1

e7f24cd04de9b92c013d71d3de526461cfb33c91
SHA256

df018cc7e708b47edfe4f39769058ce0ba10a65fe653d3a32412dd504d3f2028
SHA512

693ed1331f7f048789c11bc661949519149c43e3a76b3b600a1990f74763500a6b4a5efb532921bcdb58b27f3a136af9ba63e2e1dce4094fe078076d0073f1a7
SSDEEP

6144:QQ5C90ha3hcY0c5OyZD5i8frkU+uKCbbBGZs3xh527wIy+6Y16vLKdYoiAL1Xl4R:TKF

Score

10^/10

wshrat execution 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 7 IoCs

flow	pid	Process
4	2612	wscript.exe
6	2612	wscript.exe
8	2612	wscript.exe
9	2612	wscript.exe
11	2612	wscript.exe
12	2612	wscript.exe
13	2612	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 R48_765.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Tax Returns of R48_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

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Script User-Agent 6 IoCs

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

description	flow	ioc
HTTP User-Agent header	11	WSHRAT\|98A703FB\|UIBNQNMA\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 24/5/2024\|JavaScript-v3.4\|GB:United Kingdom
HTTP User-Agent header	12	WSHRAT\|98A703FB\|UIBNQNMA\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 24/5/2024\|JavaScript-v3.4\|GB:United Kingdom
HTTP User-Agent header	13	WSHRAT\|98A703FB\|UIBNQNMA\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 24/5/2024\|JavaScript-v3.4\|GB:United Kingdom
HTTP User-Agent header	6	WSHRAT\|98A703FB\|UIBNQNMA\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 24/5/2024\|JavaScript-v3.4\|GB:United Kingdom
HTTP User-Agent header	8	WSHRAT\|98A703FB\|UIBNQNMA\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 24/5/2024\|JavaScript-v3.4\|GB:United Kingdom
HTTP User-Agent header	9	WSHRAT\|98A703FB\|UIBNQNMA\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 24/5/2024\|JavaScript-v3.4\|GB:United Kingdom

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 2612	3028	wscript.exe	29
PID 3028 wrote to memory of 2612	3028	wscript.exe	29
PID 3028 wrote to memory of 2612	3028	wscript.exe	29

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Tax Returns of R48_765.js"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Tax Returns of R48_765.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:2612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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 R48_765.js

Filesize
896KB

MD5
bc801f212554c9679e5610f790edbba1

SHA1
c6578e9c9c3805196f9060393c3730de99d05940

SHA256
23127bf2384c9eef48c568566fa78cd5da9482b2005e0e6cdd39a12f41e3c677

SHA512
4be8c7898250b6fa04b8cad09a80073d414a324ac33fd8bea43e30ee2f4ff84ba839e694cbd424fa6ef5c7b7c00efed780f80bd120891b5121103e07196f9e27

Download Submit
C:\Users\Admin\AppData\Roaming\Tax Returns of R48_765.js

Filesize
957KB

MD5
0f597e6821a29bc87b36222f08eff311

SHA1
e7f24cd04de9b92c013d71d3de526461cfb33c91

SHA256
df018cc7e708b47edfe4f39769058ce0ba10a65fe653d3a32412dd504d3f2028

SHA512
693ed1331f7f048789c11bc661949519149c43e3a76b3b600a1990f74763500a6b4a5efb532921bcdb58b27f3a136af9ba63e2e1dce4094fe078076d0073f1a7

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Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads