5e2b7ee91606a8a2327f731f4d863c505daa70a9eb10ca0700529f6aa4fd61a8

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
01/08/2024, 21:33

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General

Target

acfpdfu.dll
Size

159KB
MD5

1f1f128c987308c6b13b7bfc9e7a33ab
SHA1

9ea7bcc65cbe892b8e50deef4457156bc51024d4
SHA256

a23f15f33e37c3ec4bd000dcfd7e5ceb32618dde459652063f567e55cf1b979a
SHA512

77cca8d4350860614334db24908d8a80025e952502f30585ba31786f0ae9340d1948460f2d0bfbdb4db6f65d7cb16ab141c76e42724313aa82c84dfe17372440
SSDEEP

3072:XqhG4vnPs+lTyUnrvjax2526L0uGwSiRrswNTZWFd5BMkC:XERnPrl2xQLAyfNT4BFC

Score

3^/10

discovery

Malware Config

Signatures

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 7 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 2100	1648	rundll32.exe	30
PID 1648 wrote to memory of 2100	1648	rundll32.exe	30
PID 1648 wrote to memory of 2100	1648	rundll32.exe	30
PID 1648 wrote to memory of 2100	1648	rundll32.exe	30
PID 1648 wrote to memory of 2100	1648	rundll32.exe	30
PID 1648 wrote to memory of 2100	1648	rundll32.exe	30
PID 1648 wrote to memory of 2100	1648	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\acfpdfu.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\acfpdfu.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2100

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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