wshrat | beca565451640f739d3c8771861c838417837e7169d73af86cc3780dbd099be2

Analysis

max time kernel
145s
max time network
147s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03-07-2024 02:32

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General

Target

beca565451640f739d3c8771861c838417837e7169d73af86cc3780dbd099be2.js
Size

7KB
MD5

54ea1f4f2737e111ffbcc03808dfec31
SHA1

7027bd0207b975128d688916230ec4f8900b2bd6
SHA256

beca565451640f739d3c8771861c838417837e7169d73af86cc3780dbd099be2
SHA512

fb9cabdcd57e7f70aef201d29bd922c615714ee40c21bc4697691ac01e8ac4b4959719436199054068abe7ceccbd22adb1c2eb0cd86ce8f768dcf637a2607b3a
SSDEEP

96:qdXsINLKzIXYD4uVaX3X8+eaePEQSX/4KGa:la

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
3	2420	wscript.exe
7	3048	WScript.exe
8	3048	WScript.exe
9	3048	WScript.exe
11	3048	WScript.exe
12	3048	WScript.exe
13	3048	WScript.exe
15	3048	WScript.exe
16	3048	WScript.exe
17	3048	WScript.exe
19	3048	WScript.exe
20	3048	WScript.exe
21	3048	WScript.exe
23	3048	WScript.exe
24	3048	WScript.exe
25	3048	WScript.exe
27	3048	WScript.exe
28	3048	WScript.exe
29	3048	WScript.exe
31	3048	WScript.exe
32	3048	WScript.exe
33	3048	WScript.exe
35	3048	WScript.exe
36	3048	WScript.exe
37	3048	WScript.exe
39	3048	WScript.exe
40	3048	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-1-5-21-2297530677-1229052932-2803917579-1000\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

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 3048	2420	wscript.exe	28
PID 2420 wrote to memory of 3048	2420	wscript.exe	28
PID 2420 wrote to memory of 3048	2420	wscript.exe	28

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\beca565451640f739d3c8771861c838417837e7169d73af86cc3780dbd099be2.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:2420
- 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:3048

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\TEGJFO.vbs

Filesize
240KB

MD5
723330a9cf1200400aa6a4dcbd27e061

SHA1
cb361b81da7fb0f6c18ed3a92a1d6422a3b5122f

SHA256
e30d57423de675d1fca733884e5763d8259ee8713d90826e69d5d2705a7cb9e6

SHA512
cacd2d78611981d3ed7909eeb2b0fb0d295da1e60ccf599a4fe4049417039b0acf64c4b7dee81b01877974091ae5b093d1234d1318704dc3a77294a51116f605

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads