66b13fad78119e5cfb1933fba5effb8f2dbeae76bbdf21868b5ab2167567be80

Analysis

max time kernel
103s
max time network
22s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
13/07/2024, 17:49

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General

Target

AK.class
Size

214B
MD5

2c8449b2be905f0257ea62096baa8b2a
SHA1

77188304bbbd035d20b69ea4efeff70e6e299652
SHA256

42c932fb6edf85f7cfa6ebd5980db6f5c2a6cce25254188b71f17340039ffbd8
SHA512

7792aeb5803796fb9d2a41d454f41747d5e785fce0841bb98d6c4a5ab0dfb00f6366897c448ce878214408f885c56a51a3f83a93c46e5048fb37706c42c14313

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-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\.class	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\class_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2864	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2864	AcroRd32.exe
2864	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 2816	2948	cmd.exe	30
PID 2948 wrote to memory of 2816	2948	cmd.exe	30
PID 2948 wrote to memory of 2816	2948	cmd.exe	30
PID 2816 wrote to memory of 2864	2816	rundll32.exe	31
PID 2816 wrote to memory of 2864	2816	rundll32.exe	31
PID 2816 wrote to memory of 2864	2816	rundll32.exe	31
PID 2816 wrote to memory of 2864	2816	rundll32.exe	31

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\AK.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\AK.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2816
- - 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\AK.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2864

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
110cd9182f66c0730e6d2e9ee0d415d7

SHA1
34f20a891e0626452b19e2ec72c90827f2707eb5

SHA256
1cc651adbb0536642c660a5b2866ee569c0e8734a23d33676de53fbe39eaf7b3

SHA512
a83d389877612909b7c508f3d79278c5fa0c1c1d9990f5f03e353c37dc6a6ab33cc27fb93a4d744b4548b0b0cf88fee8b0c99df9d944ea9f316e3cbdbdfb6ffe

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