wshrat | ad718edd0bead205d5c8e0dc326a5c89ca3ba177914e6d16fe03a09c5f9984f3

Analysis

max time kernel
133s
max time network
147s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04/11/2022, 17:15

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

wyrecover (1).js
Size

188KB
MD5

fffb69df585df4ed900ba69aef15c41e
SHA1

2e8e68b4616e28fa4d829cfe1a47e2a2006c9fb4
SHA256

ad718edd0bead205d5c8e0dc326a5c89ca3ba177914e6d16fe03a09c5f9984f3
SHA512

0494c53e766375fe4b3f56725e65743cf92835a38bf60d3095ace26b9a947dd840282de2f93d3b333dcaf3ba6fd287cf3a7219b722e8f4f92c5c8210b86b97c4
SSDEEP

3072:GZebURCmAvEzHveGK/63H5pjOjOfQ0bamXbIpklgVDSxGfmuZJR:SRChmveGKyH5pjOjOoMhAklgF2GuuZ/

Score

10^/10

wshrat persistence trojan

Malware Config

Extracted

Family

wshrat

http://45.139.105.174:3670

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	1660	wscript.exe
5	1660	wscript.exe
6	1660	wscript.exe
7	1660	wscript.exe
9	1660	wscript.exe
11	1660	wscript.exe
12	1660	wscript.exe
14	1660	wscript.exe
15	1660	wscript.exe
16	1660	wscript.exe
18	1660	wscript.exe
19	1660	wscript.exe
22	1660	wscript.exe
23	1660	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\wyrecover (1).js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wyrecover (1).js	wscript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\wyrecover (1) = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\wyrecover (1).js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wyrecover (1) = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\wyrecover (1).js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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
3	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 11 IoCs

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

description	flow	ioc
HTTP User-Agent header	12	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/11/2022\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	15	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/11/2022\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	6	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/11/2022\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	7	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/11/2022\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	9	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/11/2022\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	11	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/11/2022\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	22	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/11/2022\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	5	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/11/2022\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	14	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/11/2022\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	16	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/11/2022\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	18	WSHRAT\|BC40DA2B\|GRXNNIIE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/11/2022\|JavaScript-v3.4\|NL:Netherlands

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\wyrecover (1).js"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1660

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1660-54-0x000007FEFB871000-0x000007FEFB873000-memory.dmp

Filesize
8KB

Download