cc46b1e6b1cd0211ecb6c1fb4a4fa6a6958a0af9e4a2edfdd4632437684cdfbc

Analysis

max time kernel
7s
max time network
120s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
22/12/2023, 15:39

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General

Target

sample.tar
Size

210KB
MD5

d79180ba7892654b7f880fa083887701
SHA1

9487d275653cb8011f4c0849d181bc4c0ac6d238
SHA256

986df8a50c931a3757b8708898e49a5985f90df3a5ef43fe47a3c44fc6ee453f
SHA512

d544b98a1f9809e4e54191e68c342856e1cb33d12aeff91b05efe9034220f5c4c77deb7845ea58b476f6f9e6bf2edadcbdc0c9cbd5a5ff4e395b43f3409abee3
SSDEEP

3072:OicXLoGUxX8FtJTJa75Z78Uf75QT4bebNf7ovvza5C+FWfa09m4wXnnV4tt6:OiQ85a6i5ovvza5QiPnGt

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
Key created	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\tar_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\.tar	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\.tar\ = "tar_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\tar_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\tar_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\tar_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\tar_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000_CLASSES\tar_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2680	AcroRd32.exe
2680	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2864 wrote to memory of 2012	2864	cmd.exe	17
PID 2864 wrote to memory of 2012	2864	cmd.exe	17
PID 2864 wrote to memory of 2012	2864	cmd.exe	17
PID 2012 wrote to memory of 2680	2012	rundll32.exe	30
PID 2012 wrote to memory of 2680	2012	rundll32.exe	30
PID 2012 wrote to memory of 2680	2012	rundll32.exe	30
PID 2012 wrote to memory of 2680	2012	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\sample.tar
1⤵
- Suspicious use of WriteProcessMemory
PID:2864
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\sample.tar
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2012
- - 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\sample.tar"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2680

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

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Downloads

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

Filesize
3KB

MD5
90578772693bb81bd667469ba1f6c625

SHA1
a0fa41eb876d06dbabbaa8fe9a1f4ea6158d7dcb

SHA256
809d2a082373a6bd7eda0051e05bcee62b3d9cacdb72dfa018e0ea348e12be65

SHA512
99e0b65f927be99ebab55349b6ed7faded94fb48dd60334b178240f870791f94c8e4851719478292156cd4f1848cfcd6594862f65552be78c69311b6006d0f4c

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