5e2b7ee91606a8a2327f731f4d863c505daa70a9eb10ca0700529f6aa4fd61a8

Analysis

max time kernel
122s
max time network
129s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
01/08/2024, 21:33

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General

Target

acfpdfui.dll
Size

187KB
MD5

b40e67b3f61a2fba38745b1d20ba3f1d
SHA1

ae6fff83ae6b53381e0e96aa730bf6fc7706ce8c
SHA256

dc0de9ba9d5ec5ec94dd207cd7ecd4bc39d8acdd4c35fef64448319965fc1796
SHA512

1c2c11dbc4f10be82587a4f697f943ad8e806294ab6a87a5e0881b2f45548096f4793e639319798ba8d7cfd094e06a3c2c85705fcbfa9804a2aaf1b817f29549
SSDEEP

3072:J0Eeavb+Waq8wkExKaZoxSRx6zvJlbpRHO17Mh18X3hKHhwgWWzywptUMcG:JB8wkEx7WxSreLdRnzn0ZG

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2320	2456	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 2292 wrote to memory of 2456	2292	rundll32.exe	30
PID 2292 wrote to memory of 2456	2292	rundll32.exe	30
PID 2292 wrote to memory of 2456	2292	rundll32.exe	30
PID 2292 wrote to memory of 2456	2292	rundll32.exe	30
PID 2292 wrote to memory of 2456	2292	rundll32.exe	30
PID 2292 wrote to memory of 2456	2292	rundll32.exe	30
PID 2292 wrote to memory of 2456	2292	rundll32.exe	30
PID 2456 wrote to memory of 2320	2456	rundll32.exe	31
PID 2456 wrote to memory of 2320	2456	rundll32.exe	31
PID 2456 wrote to memory of 2320	2456	rundll32.exe	31
PID 2456 wrote to memory of 2320	2456	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\acfpdfui.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\acfpdfui.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2456
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2456 -s 248
    3⤵
    - Program crash
    PID:2320

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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