4c3d790cd1d2d9da3fd730a36749a2f243b81bcf07b7996da644b58cd0196f86

Analysis

max time kernel
120s
max time network
126s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-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.fingerprint
Size

66B
MD5

33fc4bf1927352bc1845acdde3a6ba63
SHA1

63ac2f004ac10198e729e9ccf55f6ac4f7f3c622
SHA256

4ed04e713c9d8f5d80e83645b62f1be84ec0516d37f339b3d443d8f792dea113
SHA512

7e38e264713750baf58dd9ad779885a7aae5a6fcb825eaa44b3cf814dd09cd0bf8f95b5ab5db600d19a64b02ec2155b4c9a3bc2a86e9b18eece8b3100e8c2ff1

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-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\fingerprint_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\fingerprint_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\fingerprint_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\fingerprint_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\.fingerprint	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\.fingerprint\ = "fingerprint_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\fingerprint_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_CLASSES\fingerprint_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1844	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1844	AcroRd32.exe
1844	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2584	2084	cmd.exe	31
PID 2084 wrote to memory of 2584	2084	cmd.exe	31
PID 2084 wrote to memory of 2584	2084	cmd.exe	31
PID 2584 wrote to memory of 1844	2584	rundll32.exe	32
PID 2584 wrote to memory of 1844	2584	rundll32.exe	32
PID 2584 wrote to memory of 1844	2584	rundll32.exe	32
PID 2584 wrote to memory of 1844	2584	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.fingerprint
1⤵
- Suspicious use of WriteProcessMemory
PID:2084
- 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.fingerprint
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2584
- - 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.fingerprint"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1844

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
78d5927f84443b70c9430570455f0340

SHA1
e5273ae43dee760cd8b7326c251c3dc3fe6bfe49

SHA256
19cec49d6fb8450264412575657361770aef3064753f573c3d7dd96383c5bf01

SHA512
302509784a11fad19eaa18363c08d535e5bae0187a1fdfec6530c618838279f54f0d038ce24e508321d946085d01b1fdcbd28db0f7bae8751644fbe359aacb57

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