wshrat | beca565451640f739d3c8771861c838417837e7169d73af86cc3780dbd099be2

Analysis

max time kernel
145s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
03/07/2024, 02:32

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
beca565451640f739d3c8771861c838417837e7169d73af86cc3780dbd099be2.js
Size 7KB
Sample240703-c1cjfashlb
SHA256 beca565451640f739d3c8771861c838417837e7169d73af86cc3780dbd099be2
MD5 54ea1f4f2737e111ffbcc03808dfec31
SHA1 7027bd0207b975128d688916230ec4f8900b2bd6
SHA512 fb9cabdcd57e7f70aef201d29bd922c615714ee40c21bc4697691ac01e8ac4b4959719436199054068abe7ceccbd22adb1c2eb0cd86ce8f768dcf637a2607b3a
SSDEEP 96:qdXsINLKzIXYD4uVaX3X8+eaePEQSX/4KGa:la
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wshrat execution persistence trojan

Malware Config

Extracted

Family

wshrat

http://chongmei33.publicvm.com:7045

Signatures

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

Blocklisted process makes network request 27 IoCs

flow	pid	Process
1	2764	wscript.exe
20	1492	WScript.exe
31	1492	WScript.exe
38	1492	WScript.exe
39	1492	WScript.exe
40	1492	WScript.exe
48	1492	WScript.exe
55	1492	WScript.exe
56	1492	WScript.exe
57	1492	WScript.exe
58	1492	WScript.exe
59	1492	WScript.exe
64	1492	WScript.exe
67	1492	WScript.exe
68	1492	WScript.exe
69	1492	WScript.exe
70	1492	WScript.exe
76	1492	WScript.exe
81	1492	WScript.exe
91	1492	WScript.exe
92	1492	WScript.exe
93	1492	WScript.exe
94	1492	WScript.exe
95	1492	WScript.exe
96	1492	WScript.exe
97	1492	WScript.exe
98	1492	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-1-5-21-2447855248-390457009-3660902674-1000\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\TEGJFO.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TEGJFO.vbs	WScript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TEGJFO = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\TEGJFO.vbs\""	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TEGJFO = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\TEGJFO.vbs\""	WScript.exe

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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2764 wrote to memory of 1492	2764	wscript.exe	86
PID 2764 wrote to memory of 1492	2764	wscript.exe	86

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\beca565451640f739d3c8771861c838417837e7169d73af86cc3780dbd099be2.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2764
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\TEGJFO.vbs"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:1492

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

TEGJFO.vbs

Path C:\Users\Admin\AppData\Local\Temp\TEGJFO.vbs
Size 240KB
SHA256 e30d57423de675d1fca733884e5763d8259ee8713d90826e69d5d2705a7cb9e6
MD5 723330a9cf1200400aa6a4dcbd27e061
SHA1 cb361b81da7fb0f6c18ed3a92a1d6422a3b5122f
SHA512 cacd2d78611981d3ed7909eeb2b0fb0d295da1e60ccf599a4fe4049417039b0acf64c4b7dee81b01877974091ae5b093d1234d1318704dc3a77294a51116f605
SSDEEP 768:4sZAhOOerEjqhuLRjlq0sRnPJTmt3H6dkexzcIcAlJDV7vn6:4sQjDZ
MD5 SHA1 SHA512 SSDEEP

Submit Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads