wshrat | 197e07455f8920039c0a30b9c95f847e02d29c9d7bd50488a350b53e747ba9c5

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
23-09-2023 08:04

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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 3 IoCs

resource	yara_rule
behavioral2/files/0x000300000001ef8c-3.dat	family_wshrat
behavioral2/files/0x00090000000231d6-4.dat	family_wshrat
behavioral2/files/0x00090000000231d6-6.dat	family_wshrat

Blocklisted process makes network request 21 IoCs

flow	pid	Process
16	4776	wscript.exe
17	4776	wscript.exe
36	4776	wscript.exe
46	4776	wscript.exe
47	4776	wscript.exe
61	4776	wscript.exe
62	4776	wscript.exe
63	4776	wscript.exe
64	4776	wscript.exe
65	4776	wscript.exe
66	4776	wscript.exe
67	4776	wscript.exe
68	4776	wscript.exe
69	4776	wscript.exe
70	4776	wscript.exe
71	4776	wscript.exe
72	4776	wscript.exe
75	4776	wscript.exe
77	4776	wscript.exe
78	4776	wscript.exe
79	4776	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-1-5-21-2890696111-2332180956-3312704074-1000\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\invoice-wsl.js	wscript.exe
File opened for modification	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-1-5-21-2890696111-2332180956-3312704074-1000\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-1-5-21-2890696111-2332180956-3312704074-1000\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
15	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 4220 wrote to memory of 4776	4220	wscript.exe	86
PID 4220 wrote to memory of 4776	4220	wscript.exe	86

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:4220
- 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:4776

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
187KB

MD5
bc0356063536ebe0867a97a1965a0f52

SHA1
f127953be621382ff50a37ebecef4d17bb3cd7d2

SHA256
197e07455f8920039c0a30b9c95f847e02d29c9d7bd50488a350b53e747ba9c5

SHA512
40f1d16054d103b4f9be044c9cb34f73fb042a62ea29e205f13a4f0b2565dbaa3e9d7954e9d288a748a125495891c2ed2f19104e5fc1353c745879e16ca02565

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