43bc911d4184132dc67be0bfa91eeab77bc81a990a9f011ef3048c32ecb17ac5

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06/03/2025, 00:22

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General

Target

43bc911d4184132dc67be0bfa91eeab77bc81a990a9f011ef3048c32ecb17ac5.dll
Size

137KB
MD5

22d818083c101f819e075dcb5499195c
SHA1

e895d8d3abba9d7040c7b1f523ce62ea1433c76f
SHA256

43bc911d4184132dc67be0bfa91eeab77bc81a990a9f011ef3048c32ecb17ac5
SHA512

a6eb06410ff75d3760d89e4d7b6148c9271364590a94c79209929652c7ff54ac81c7c176ec074f6fb5874cd6c788d61de12b5900fb46bc4336c190de6470e1b0
SSDEEP

3072:mR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuX:D25GgFny61mrad

Score

4^/10

discovery

Malware Config

Signatures

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\AppPatch\ComBack.Dll	rundll32.exe
File opened for modification	C:\Windows\AppPatch\ComBack.Dll	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2360	2520	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 3012 wrote to memory of 2520	3012	rundll32.exe	30
PID 3012 wrote to memory of 2520	3012	rundll32.exe	30
PID 3012 wrote to memory of 2520	3012	rundll32.exe	30
PID 3012 wrote to memory of 2520	3012	rundll32.exe	30
PID 3012 wrote to memory of 2520	3012	rundll32.exe	30
PID 3012 wrote to memory of 2520	3012	rundll32.exe	30
PID 3012 wrote to memory of 2520	3012	rundll32.exe	30
PID 2520 wrote to memory of 2360	2520	rundll32.exe	31
PID 2520 wrote to memory of 2360	2520	rundll32.exe	31
PID 2520 wrote to memory of 2360	2520	rundll32.exe	31
PID 2520 wrote to memory of 2360	2520	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\43bc911d4184132dc67be0bfa91eeab77bc81a990a9f011ef3048c32ecb17ac5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\43bc911d4184132dc67be0bfa91eeab77bc81a990a9f011ef3048c32ecb17ac5.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2520
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 228
    3⤵
    - Program crash
    PID:2360

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

Replay Monitor

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Downloads

memory/2520-1-0x0000000043E50000-0x0000000043E77000-memory.dmp

Filesize
156KB

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