4c3d790cd1d2d9da3fd730a36749a2f243b81bcf07b7996da644b58cd0196f86

Analysis

max time kernel
117s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11/09/2024, 12:54

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General

Target

Nezur_Interface.exe.WebView2/EBWebView/CertificateRevocation/6498.2023.8.1/manifest.json
Size

113B
MD5

b6911958067e8d96526537faed1bb9ef
SHA1

a47b5be4fe5bc13948f891d8f92917e3a11ebb6e
SHA256

341b28d49c6b736574539180dd6de17c20831995fe29e7bc986449fbc5caa648
SHA512

62802f6f6481acb8b99a21631365c50a58eaf8ffdf7d9287d492a7b815c837d6a6377342e24350805fb8a01b7e67816c333ec98dcd16854894aeb7271ea39062

Score

3^/10

discovery

Malware Config

Signatures

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000_CLASSES\json_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000_CLASSES\.json	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000_CLASSES\json_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000_CLASSES\json_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000_CLASSES\json_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2764	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2764	AcroRd32.exe
2764	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2316	2532	cmd.exe	31
PID 2532 wrote to memory of 2316	2532	cmd.exe	31
PID 2532 wrote to memory of 2316	2532	cmd.exe	31
PID 2316 wrote to memory of 2764	2316	rundll32.exe	32
PID 2316 wrote to memory of 2764	2316	rundll32.exe	32
PID 2316 wrote to memory of 2764	2316	rundll32.exe	32
PID 2316 wrote to memory of 2764	2316	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Nezur_Interface.exe.WebView2\EBWebView\CertificateRevocation\6498.2023.8.1\manifest.json
1⤵
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Nezur_Interface.exe.WebView2\EBWebView\CertificateRevocation\6498.2023.8.1\manifest.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2316
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\Nezur_Interface.exe.WebView2\EBWebView\CertificateRevocation\6498.2023.8.1\manifest.json"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
9d7669c82253b35dad80b0d8b6db4ac6

SHA1
f6c298fdaaf1aec99ca66935638c8570e66b7a89

SHA256
de073ad1b150b74447ae51632776b7933b78278bdcb331ee3ef0c78c9d847823

SHA512
284598f82517cad4ed74131b12b8c38e1a907667f64fcc45795b00a61ef8adc4b291de68ae79dd85d968a48f127a2c8323a63f41e263adc2e1a3972de1b4150a

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