9490a96656c76f667feb406d7a08c9a0a44eca1c8151ed6999000179549a92b1

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
22/12/2024, 10:49

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General

Target

$PLUGINSDIR/yenf.dll
Size

72KB
MD5

46c925d5eaaaf5a7cdd55ffc845d037c
SHA1

df0fc5da0fd9a0d288abac007e2ce470911fe25d
SHA256

649b6cf91616337859aa74ec46fbdcfed6859475bb689c49c84eafdf33f796ec
SHA512

9e124847e59a37ad9c11fdd94e5a8e0b4e93a273c43daecf2d357c94ffb55387b7070b45af688566a9d762cb7ad78cd4412b84ff32892a6fb7c8a7c8c3d53373
SSDEEP

1536:/f6RHirpM7t5P37QCIuAw8nMZxcZrIOIkGcFe2KRU8+TRbdGxJgUx:/CR2grMCxL7j+IBkmRU8+T

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1080	3068	WerFault.exe	30

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	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 3068	2200	rundll32.exe	30
PID 2200 wrote to memory of 3068	2200	rundll32.exe	30
PID 2200 wrote to memory of 3068	2200	rundll32.exe	30
PID 2200 wrote to memory of 3068	2200	rundll32.exe	30
PID 2200 wrote to memory of 3068	2200	rundll32.exe	30
PID 2200 wrote to memory of 3068	2200	rundll32.exe	30
PID 2200 wrote to memory of 3068	2200	rundll32.exe	30
PID 3068 wrote to memory of 1080	3068	rundll32.exe	31
PID 3068 wrote to memory of 1080	3068	rundll32.exe	31
PID 3068 wrote to memory of 1080	3068	rundll32.exe	31
PID 3068 wrote to memory of 1080	3068	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\yenf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2200
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\yenf.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3068
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3068 -s 256
    3⤵
    - Program crash
    PID:1080

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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