wshrat | 480402d50da0d411c886bad96a179f93cd6de992c7084c6098fde2dd527b1fd8

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
09-07-2024 08:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Rechnung2498.js
Size

179KB
MD5

093aa4289d9d8d8315ab0ea9b306f0a0
SHA1

0316c6e558148a10d0acf63bc84f53ca315b1acf
SHA256

39f7abd459bda03744d7d1dfb7dd15b2204014d75f20d86a13789648d6f44b1d
SHA512

ddea7839a14759a27d17578850fb473f720bf911cb9d6e56c3e55a963eca51a85ae1706d2f8bca31b216fa7ef2457135dd1a198008203e6635cb73fd3df985f8
SSDEEP

3072:+p1gHeX3reXqf6ZKOBRY+7Q0bamKZtvEzKbURCqeGK/6SbIpklgVDSxGfmuZyas:+p1gHeX3reXqf6ZKwRY+cM24RCqeGKZR

Score

10^/10

wshrat execution persistence trojan

Malware Config

Signatures

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

WSHRAT payload 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023454-3.dat	family_wshrat

Blocklisted process makes network request 22 IoCs

flow	pid	Process
2	2224	wscript.exe
3	2224	wscript.exe
18	2224	wscript.exe
19	2224	wscript.exe
20	2224	wscript.exe
26	2224	wscript.exe
35	2224	wscript.exe
36	2224	wscript.exe
37	2224	wscript.exe
38	2224	wscript.exe
42	2224	wscript.exe
43	2224	wscript.exe
44	2224	wscript.exe
45	2224	wscript.exe
50	2224	wscript.exe
51	2224	wscript.exe
52	2224	wscript.exe
53	2224	wscript.exe
54	2224	wscript.exe
55	2224	wscript.exe
56	2224	wscript.exe
57	2224	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-1-5-21-1015551233-1106003478-1645743776-1000\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\Rechnung2498.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Rechnung2498.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-1-5-21-1015551233-1106003478-1645743776-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rechnung2498 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Rechnung2498.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rechnung2498 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Rechnung2498.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1015551233-1106003478-1645743776-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rechnung2498 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Rechnung2498.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rechnung2498 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Rechnung2498.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
1	ip-api.com

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
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 3928 wrote to memory of 2224	3928	wscript.exe	82
PID 3928 wrote to memory of 2224	3928	wscript.exe	82

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Rechnung2498.js
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3928
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Rechnung2498.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:2224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Rechnung2498.js

Filesize
179KB

MD5
093aa4289d9d8d8315ab0ea9b306f0a0

SHA1
0316c6e558148a10d0acf63bc84f53ca315b1acf

SHA256
39f7abd459bda03744d7d1dfb7dd15b2204014d75f20d86a13789648d6f44b1d

SHA512
ddea7839a14759a27d17578850fb473f720bf911cb9d6e56c3e55a963eca51a85ae1706d2f8bca31b216fa7ef2457135dd1a198008203e6635cb73fd3df985f8

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads