wshrat | 197e07455f8920039c0a30b9c95f847e02d29c9d7bd50488a350b53e747ba9c5

Analysis

max time kernel
146s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
12-10-2023 02:09

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General

Target

invoice-wsl.js
Size

187KB
MD5

bc0356063536ebe0867a97a1965a0f52
SHA1

f127953be621382ff50a37ebecef4d17bb3cd7d2
SHA256

197e07455f8920039c0a30b9c95f847e02d29c9d7bd50488a350b53e747ba9c5
SHA512

40f1d16054d103b4f9be044c9cb34f73fb042a62ea29e205f13a4f0b2565dbaa3e9d7954e9d288a748a125495891c2ed2f19104e5fc1353c745879e16ca02565
SSDEEP

3072:2aeGK/6dbIpklgVDSxGfmuZRTFBTEsSQ0bamOZkvEzzbURC8:2aeGKgAklgF2GuuZ7auMTFRC8

Score

10^/10

wshrat persistence trojan

Malware Config

Signatures

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

WSHRAT payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023236-3.dat	family_wshrat
behavioral2/files/0x0006000000023239-6.dat	family_wshrat

Blocklisted process makes network request 5 IoCs

flow	pid	Process
39	4500	wscript.exe
50	4500	wscript.exe
52	4500	wscript.exe
64	4500	wscript.exe
76	4500	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-1-5-21-1926387074-3400613176-3566796709-1000\Control Panel\International\Geo\Nation	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\invoice-wsl.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice-wsl.js	wscript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\invoice-wsl = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\invoice-wsl.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\invoice-wsl = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\invoice-wsl.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\invoice-wsl = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\invoice-wsl.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\invoice-wsl = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\invoice-wsl.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
33	ip-api.com

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 4500	3672	wscript.exe	88
PID 3672 wrote to memory of 4500	3672	wscript.exe	88

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\invoice-wsl.js
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\invoice-wsl.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:4500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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\invoice-wsl.js

Filesize
64KB

MD5
753e22efd647e793b113a822d6e090b4

SHA1
cf4210942312ad3f5a88d4f90bd6c7c584f63f5f

SHA256
15925f05e02a1a7dfaeb45db9dfeb75c434959397be7370bd7c8341cb7a2316d

SHA512
cf9e9f8c603ca717d0d1ae876cc867381ede05e40f47e3682e5429630808d0b2b336858c3fd9fc73e8b05756d4a11a15b350b02280a4e0c5c2aa1cab5eb5de4a

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

Filesize
187KB

MD5
bc0356063536ebe0867a97a1965a0f52

SHA1
f127953be621382ff50a37ebecef4d17bb3cd7d2

SHA256
197e07455f8920039c0a30b9c95f847e02d29c9d7bd50488a350b53e747ba9c5

SHA512
40f1d16054d103b4f9be044c9cb34f73fb042a62ea29e205f13a4f0b2565dbaa3e9d7954e9d288a748a125495891c2ed2f19104e5fc1353c745879e16ca02565

Download Submit
C:\Users\Admin\AppData\Roaming\invoice-wsl.js

Filesize
187KB

MD5
bc0356063536ebe0867a97a1965a0f52

SHA1
f127953be621382ff50a37ebecef4d17bb3cd7d2

SHA256
197e07455f8920039c0a30b9c95f847e02d29c9d7bd50488a350b53e747ba9c5

SHA512
40f1d16054d103b4f9be044c9cb34f73fb042a62ea29e205f13a4f0b2565dbaa3e9d7954e9d288a748a125495891c2ed2f19104e5fc1353c745879e16ca02565

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads