eb71dad7e3c7fc10f128a9f4c1aebdb527eb4192e3525010322559ca9b63d610

Analysis

max time kernel
122s
max time network
133s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12/03/2024, 23:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

chrome_100_percent.pak
Size

138KB
MD5

4f7cf265db503b21845d2df4dc903022
SHA1

970b35882db6670c81bd745bdeed11f011c609da
SHA256

c48e6d360aee16159d4be43f9144f77d3275a87b3f77eae548e357601c55fc16
SHA512

5645d2c226697c7ac69ce73e9124630696516fc18286a5579823588f93a936da71084a3850f1f9a7b34c624f4c502957107f5957ffba5e6c1e4da6d8da7d3348
SSDEEP

3072:nKzw9bp66mdgZeMj6g2Z8Gb0+VRLf0ld0GY3cQ3F2DExm/KLQ2I:nKzw986mdgZezgm8Gb0OV8ld0GecQ3m3

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2724	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2724	AcroRd32.exe
2724	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 2548	1708	cmd.exe	29
PID 1708 wrote to memory of 2548	1708	cmd.exe	29
PID 1708 wrote to memory of 2548	1708	cmd.exe	29
PID 2548 wrote to memory of 2724	2548	rundll32.exe	30
PID 2548 wrote to memory of 2724	2548	rundll32.exe	30
PID 2548 wrote to memory of 2724	2548	rundll32.exe	30
PID 2548 wrote to memory of 2724	2548	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2548
- - 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\chrome_100_percent.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
0aa8e2bcf204b715af7bf411f7e6b0bd

SHA1
ff14663b9ce090d4fa3d288027396863183486b1

SHA256
60fa0fad648deb009b01884537afb9a4d42debc44111dc3ec77e987924e1446f

SHA512
fd8708fdc1102332cfdb9ac4454e73490332a82b7bac6e7caef5c0af27a140a1a5f1cd84bcbc8f01b5d9ebbb654f3612b71ee1601a8250ac116c50215b62fcd3

Download Submit