wshrat | c7805522f881cfa27c3cc92917f28da0f770d1e4ffe5aa170751058553da73ed

General

Target

Scan0030.js
Size

898KB
MD5

b2b05e1631db082866c8f9d38cddf403
SHA1

3f19e69b66bf8c50993b55e5744818e3e92d4156
SHA256

c7805522f881cfa27c3cc92917f28da0f770d1e4ffe5aa170751058553da73ed
SHA512

7b7f6ab57bb555e07bd39e21e1470ea73c2dc4c1fa97bc1bbfb3361f8f2659d503a445a90e4125556a2ceba4236f83a077961340c435db0e070a91f6269d4c56
SSDEEP

6144:ROD297zg2plJPacQwE6hkpA0LysIfFk9jvCsYS9H17d9qFPNL6Z4MnJHI9Q6NCwU:+LP

Score

10^/10

wshrat persistence trojan

Malware Config

Extracted

Family

wshrat

C2

http://45.90.222.125:7121

Signatures

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

Blocklisted process makes network request 9 IoCs

flow	pid	Process
6	1992	wscript.exe
8	636	wscript.exe
12	636	wscript.exe
13	636	wscript.exe
29	636	wscript.exe
32	636	wscript.exe
34	636	wscript.exe
35	636	wscript.exe
37	636	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-1-5-21-1529757233-3489015626-3409890339-1000\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\Scan0030.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Scan0030.js	wscript.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Scan0030 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Scan0030.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Scan0030 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Scan0030.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Scan0030 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Scan0030.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Scan0030 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Scan0030.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\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
11	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 6 IoCs

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

description	flow	ioc
HTTP User-Agent header	34	WSHRAT\|9CCFD0DF\|ROBKQPFG\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 8/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	35	WSHRAT\|9CCFD0DF\|ROBKQPFG\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 8/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	6	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	8	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	29	WSHRAT\|9CCFD0DF\|ROBKQPFG\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 8/5/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	32	WSHRAT\|9CCFD0DF\|ROBKQPFG\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 8/5/2023\|JavaScript-v3.4\|IN:India

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 636	1992	wscript.exe	84
PID 1992 wrote to memory of 636	1992	wscript.exe	84

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Scan0030.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Scan0030.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:636

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\Scan0030.js

Filesize
898KB

MD5
b2b05e1631db082866c8f9d38cddf403

SHA1
3f19e69b66bf8c50993b55e5744818e3e92d4156

SHA256
c7805522f881cfa27c3cc92917f28da0f770d1e4ffe5aa170751058553da73ed

SHA512
7b7f6ab57bb555e07bd39e21e1470ea73c2dc4c1fa97bc1bbfb3361f8f2659d503a445a90e4125556a2ceba4236f83a077961340c435db0e070a91f6269d4c56

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Scan0030.js

Filesize
898KB

MD5
b2b05e1631db082866c8f9d38cddf403

SHA1
3f19e69b66bf8c50993b55e5744818e3e92d4156

SHA256
c7805522f881cfa27c3cc92917f28da0f770d1e4ffe5aa170751058553da73ed

SHA512
7b7f6ab57bb555e07bd39e21e1470ea73c2dc4c1fa97bc1bbfb3361f8f2659d503a445a90e4125556a2ceba4236f83a077961340c435db0e070a91f6269d4c56

Download Submit
C:\Users\Admin\AppData\Roaming\Scan0030.js

Filesize
898KB

MD5
b2b05e1631db082866c8f9d38cddf403

SHA1
3f19e69b66bf8c50993b55e5744818e3e92d4156

SHA256
c7805522f881cfa27c3cc92917f28da0f770d1e4ffe5aa170751058553da73ed

SHA512
7b7f6ab57bb555e07bd39e21e1470ea73c2dc4c1fa97bc1bbfb3361f8f2659d503a445a90e4125556a2ceba4236f83a077961340c435db0e070a91f6269d4c56

Download Submit
C:\Users\Admin\AppData\Roaming\wshsdk.zip

Filesize
12.4MB

MD5
d9a63dfd8b73629421bb44bcde09f312

SHA1
7855575c12eaee0e734f3901ca1da2931e9b587a

SHA256
9d5bb028794410fda9d1b3e0f8deb6beee5bd4e1e55340bd375a209c81dc98eb

SHA512
df195c22f7818569cc92e995846ab507caa30f341ac902cc8afe6f06ae4493709e7f80357c91cf14b21e58e2154e0b35f2154d8a313bf36fcff0b72b3a539cf8

Download Submit
C:\Users\Admin\AppData\Roaming\wshsdk\Lib\site-packages\adodbapi\test\is64bit.py

Filesize
1KB

MD5
ca2cc8e73bbca371935bbc92ed18d567

SHA1
1adb458919e842cd78c72b1ff00e5e93cb6ef75e

SHA256
bea3f797921992fda45c19db41e10e3b325bcdd3ea35d35c1fa70535477ad9c1

SHA512
b63df3bad9272f45ba0f50e2c50aaed7a04eb1b000d5855d9f3a8e5c5f2d381c667b1e9c1e1f03f80584a7941a96992838664ae9dd25e1b8320e026da35b8223

Download Submit

Analysis

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