eb21a698101b0781187b0df85ea6683043e36d5e4229dc692b0a2e410c8adc6e

Analysis

max time kernel
118s
max time network
128s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
21/04/2024, 13:16

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General

Target

chrome_100_percent.pak
Size

132KB
MD5

e4cbb48c438622a4298c7bdd75cc04f6
SHA1

6f756d31ef95fd745ba0e9c22aadb506f3a78471
SHA256

24d92bbeb63d06b01010fe230c1e3a31e667a159be7e570a8efe68f83ed9ad40
SHA512

8d3ea1b5ca74c20a336eaa29630fd76ecd32f5a56bb66e8cef2bce0fa19024ea917562fd31365081f7027dde9c8464742b833d08c8f41fdddc5bd1a74b9bc766
SSDEEP

3072:TzwJCGIekwc9W2bg3yhPaL2o418Gb0+VRLf0ld0GY3cQ3ERVm2I:Tzw1IekZ42k3yMK18Gb0OV8ld0GecQ35

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-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_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-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2556	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2556	AcroRd32.exe
2556	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 2296	1704	cmd.exe	29
PID 1704 wrote to memory of 2296	1704	cmd.exe	29
PID 1704 wrote to memory of 2296	1704	cmd.exe	29
PID 2296 wrote to memory of 2556	2296	rundll32.exe	30
PID 2296 wrote to memory of 2556	2296	rundll32.exe	30
PID 2296 wrote to memory of 2556	2296	rundll32.exe	30
PID 2296 wrote to memory of 2556	2296	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:1704
- 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:2296
- - 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:2556

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

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Downloads

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

Filesize
3KB

MD5
b0761ac3d9cc622a65c6afa0d8fe0e1f

SHA1
788287d05127af13b479a688799a242cef3bed7a

SHA256
2b4cd46fbb771f5c09468a3a09131fd635dbec69658f369afab921058a2a8611

SHA512
56075dd07616d6e8cebf47ade7c721c037afdddddcab2b803a3a0cdaf88914b2a947ed3736045e03aedc020fda0cd295cdb5ee0f81a89692a669784a65fecbf3

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