18ce929380ab15f9e9d23d156ff3cff56b94e33641a40379f57e7adc91130c3f

Resubmissions

09/04/2024, 22:11

240409-131wtaea38 8

09/04/2024, 21:43

09/04/2024, 21:18

06/04/2024, 10:55

06/04/2024, 10:41

Analysis

max time kernel
1203s
max time network
1219s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/04/2024, 21:18

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General

Target

chrome_200_percent.pak
Size

175KB
MD5

9c379fc04a7bf1a853b14834f58c9f4b
SHA1

c105120fd00001c9ebdf2b3b981ecccb02f8eefb
SHA256

b2c25fb30fee5f04ccdb8bf3c937a667502d266e428425feeb5af964f6167d48
SHA512

f28844dba7780e5f5c9d77ac3d29069dfcd6698447d5723886e510eadd51d6285e06adbda06bf4a69f841afc161c764cb2e5b9ad2c92f0a87176709b4acd2c13
SSDEEP

3072:oDQYaEQN6AJPgqzOovg6/Csp7rfR54x5GMR+F44ffbdZnYw9p4AbIVGYoDd+HxNN:oDQYaNN68gyrgKpngx5GMRejnbdZnVEd

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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_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-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2524	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2524	AcroRd32.exe
2524	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2768	2244	cmd.exe	29
PID 2244 wrote to memory of 2768	2244	cmd.exe	29
PID 2244 wrote to memory of 2768	2244	cmd.exe	29
PID 2768 wrote to memory of 2524	2768	rundll32.exe	30
PID 2768 wrote to memory of 2524	2768	rundll32.exe	30
PID 2768 wrote to memory of 2524	2768	rundll32.exe	30
PID 2768 wrote to memory of 2524	2768	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_200_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\chrome_200_percent.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2768
- - 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_200_percent.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2524

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
ff8c8db0acd7b540b13facc564c43c78

SHA1
2f6fe8ce07e47a4f4281f0349501756bcfcf58f7

SHA256
21672e5f6679016752364d3d38605113cc9c086f09cb8dc527b1ea5cb7b03870

SHA512
fb127c5e4436daa7a644c18b2a6809cba194715ffbc38c435164dfbb5ee885d7f064c2497797d9dfd51c8fcab319bc6fbda7e2f5f10eaf18a1d88765c46da374

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