wshrat | ae401add3e6d11019f5bb30c106b7a8fa4d1a93bce47208e4e736e09d1faebdd

General

Target

Purchase Invoice.js
Size

1013KB
MD5

0d9dbbce1cc0b89b22225bd6cdc6a67a
SHA1

04223db348fe531a15a961cf0e26f9b8257af986
SHA256

ae401add3e6d11019f5bb30c106b7a8fa4d1a93bce47208e4e736e09d1faebdd
SHA512

6a1a18b028d3fbeae8f3a38869b2e2fc44cf10a9cfaedfa314a8bef85c2584444000d593ad90f6f9dc495ba35bc05727aec03c3a42fa797923825c157bd14491
SSDEEP

3072:QQO7VS2G9XYK9oMvjNvyi+xf2yEoal/Wjzy94CDd:QQO7VS2G9XYK9oMh+K3l7

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 15 IoCs

flow	pid	Process
4	588	wscript.exe
6	588	wscript.exe
7	588	wscript.exe
9	588	wscript.exe
11	588	wscript.exe
12	588	wscript.exe
13	588	wscript.exe
15	588	wscript.exe
16	588	wscript.exe
17	588	wscript.exe
19	588	wscript.exe
20	588	wscript.exe
21	588	wscript.exe
23	588	wscript.exe
24	588	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\Purchase Invoice.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase Invoice.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 14 IoCs

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

description	flow	ioc
HTTP User-Agent header	23	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	7	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	21	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	16	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	20	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	9	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	13	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	12	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	15	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	17	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	19	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	24	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	6	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	11	WSHRAT\|106B36FF\|HVMHZIYD\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 19/5/2023\|JavaScript-v3.4\|IN:India

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 588	1948	wscript.exe	29
PID 1948 wrote to memory of 588	1948	wscript.exe	29
PID 1948 wrote to memory of 588	1948	wscript.exe	29

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Purchase Invoice.js"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Purchase Invoice.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:588

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase Invoice.js

Filesize
1013KB

MD5
0d9dbbce1cc0b89b22225bd6cdc6a67a

SHA1
04223db348fe531a15a961cf0e26f9b8257af986

SHA256
ae401add3e6d11019f5bb30c106b7a8fa4d1a93bce47208e4e736e09d1faebdd

SHA512
6a1a18b028d3fbeae8f3a38869b2e2fc44cf10a9cfaedfa314a8bef85c2584444000d593ad90f6f9dc495ba35bc05727aec03c3a42fa797923825c157bd14491

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

Filesize
1013KB

MD5
0d9dbbce1cc0b89b22225bd6cdc6a67a

SHA1
04223db348fe531a15a961cf0e26f9b8257af986

SHA256
ae401add3e6d11019f5bb30c106b7a8fa4d1a93bce47208e4e736e09d1faebdd

SHA512
6a1a18b028d3fbeae8f3a38869b2e2fc44cf10a9cfaedfa314a8bef85c2584444000d593ad90f6f9dc495ba35bc05727aec03c3a42fa797923825c157bd14491

Download Submit
C:\Users\Admin\AppData\Roaming\Purchase Invoice.js

Filesize
1013KB

MD5
0d9dbbce1cc0b89b22225bd6cdc6a67a

SHA1
04223db348fe531a15a961cf0e26f9b8257af986

SHA256
ae401add3e6d11019f5bb30c106b7a8fa4d1a93bce47208e4e736e09d1faebdd

SHA512
6a1a18b028d3fbeae8f3a38869b2e2fc44cf10a9cfaedfa314a8bef85c2584444000d593ad90f6f9dc495ba35bc05727aec03c3a42fa797923825c157bd14491

Download Submit

Analysis

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