71d55286d6ff61f51b9a5ffb0eaf05dfaf996dd544df0655ee333f47630e3a9b

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
22/02/2024, 04:29

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General

Target

chrome_100_percent.pak
Size

125KB
MD5

0cf9de69dcfd8227665e08c644b9499c
SHA1

a27941acce0101627304e06533ba24f13e650e43
SHA256

d2c299095dbbd3a3cb2b4639e5b3bd389c691397ffd1a681e586f2cfe0e2ab88
SHA512

bb5d340009cef2bcb604ef38fdd7171fed0423c2dc6a01e590f8d15c4f6bc860606547550218db41fba554609e8395c9e3c3508dfa2d8b202e5059e7646bdcef
SSDEEP

3072:ogKzwI/4wKN3/nXCWZQCPxBVO2o418Gb0+VRLf0ld0GY3cQ39x2I:ogKzwI/49NPyCtoK18Gb0OV8ld0GecQ1

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-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2472	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2472	AcroRd32.exe
2472	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2612	2404	cmd.exe	29
PID 2404 wrote to memory of 2612	2404	cmd.exe	29
PID 2404 wrote to memory of 2612	2404	cmd.exe	29
PID 2612 wrote to memory of 2472	2612	rundll32.exe	30
PID 2612 wrote to memory of 2472	2612	rundll32.exe	30
PID 2612 wrote to memory of 2472	2612	rundll32.exe	30
PID 2612 wrote to memory of 2472	2612	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:2404
- 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:2612
- - 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:2472

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
2476065eb43dc0d437315e5b68de5e94

SHA1
0986f0df3290390b658f886bd327825846c22e29

SHA256
7e302a3d3393c1268c0c650e8753bc48531d908081370e710387f2a43b935215

SHA512
638e5075a88b3e098fde75652f5fd1d1d6ca2b26c2c5b74430d3fc1676e986c07017e99dca78378626813c7151603706ea258380d716a960760826e873904fe6

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