eb4a7d75e1661dc1d9e158317a788eaf1c280da115c0c78662d0cba514b1e59b

Analysis

max time kernel
151s
max time network
51s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
04/02/2023, 21:09

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General

Target

Setup/Locales/fr.pak
Size

346KB
MD5

b23d3b75641a5796d484cf7acdf5388e
SHA1

b86d33e0531d21dac2794f5bc481113db17052d8
SHA256

44c03d05283303c00333f1356c738d6ff87708e4ae3f49e04813426082844943
SHA512

c496a1e626c631c1f4f5b06276e034328911d581fcc6e9f91993021076907fb75c52787a2aa77b903c0379be848b9e3d78d864be06284aae07d9d1d6b0a4cf55
SSDEEP

6144:uHcQVy19T0JoUX2bwT6r6QuaxVZrwnDv+OQ6rjzMYnYEo3ppmwurspz4kyxx4VJz:u8C09Br6QuaxVYPzMYnYEo3FOsakuxQz

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
108	AcroRd32.exe
108	AcroRd32.exe
108	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1528 wrote to memory of 584	1528	cmd.exe	27
PID 1528 wrote to memory of 584	1528	cmd.exe	27
PID 1528 wrote to memory of 584	1528	cmd.exe	27
PID 584 wrote to memory of 108	584	rundll32.exe	28
PID 584 wrote to memory of 108	584	rundll32.exe	28
PID 584 wrote to memory of 108	584	rundll32.exe	28
PID 584 wrote to memory of 108	584	rundll32.exe	28

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Setup\Locales\fr.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:1528
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Setup\Locales\fr.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:584
- - 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\Setup\Locales\fr.pak"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:108

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/108-82-0x0000000075B51000-0x0000000075B53000-memory.dmp

Filesize
8KB

Download
memory/1528-54-0x000007FEFB5E1000-0x000007FEFB5E3000-memory.dmp

Filesize
8KB

Download