f6d439b28fcb5f5ba472e3fa3cc133f8067e34c05b1d358a1a61e75696c1dbad

Analysis

max time kernel
119s
max time network
127s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-04-2024 16:20

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General

Target

cpvp/entities/r.-1.-1.mca
Size

12KB
MD5

ec781653e48bf001b82eb4c5b0d96f9c
SHA1

92950b43b1572f3eb9cf4bde88fdca693894072e
SHA256

e42b90cd1423fea32e36b240b837ab2b4a16ab28e06b3b7aa8f14bfdba358f40
SHA512

a9a6f4725f3125618fac9b80ca66ea0ca9a173d1d157267b3508b216be3777230fd1db663757ffc2da944b627375d04572a700aecbec5b204b35cd85e6b4ebfd
SSDEEP

24:HlF9TExVQazKD2ZGeK+tsK7YwK/nxvx8hNDcU4thI0EfHM:FF9Ac3D2ZGhKsd3Ahcvt+D

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-1-5-21-2461186416-2307104501-1787948496-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\mca_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\mca_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\mca_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\mca_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\mca_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\.mca	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\.mca\ = "mca_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\mca_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2632	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2632	AcroRd32.exe
2632	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 2744	1756	cmd.exe	29
PID 1756 wrote to memory of 2744	1756	cmd.exe	29
PID 1756 wrote to memory of 2744	1756	cmd.exe	29
PID 2744 wrote to memory of 2632	2744	rundll32.exe	30
PID 2744 wrote to memory of 2632	2744	rundll32.exe	30
PID 2744 wrote to memory of 2632	2744	rundll32.exe	30
PID 2744 wrote to memory of 2632	2744	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\cpvp\entities\r.-1.-1.mca
1⤵
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\cpvp\entities\r.-1.-1.mca
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2744
- - 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\cpvp\entities\r.-1.-1.mca"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2632

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
e9b926b66025065f633804b47d0768f3

SHA1
723363abeaec643c0f5a300dc5992b8529b50ecd

SHA256
a729e76c852caf9df468dd92ea37a36daafd1df9ed63555c1dcc44d470b494b8

SHA512
de5d7878cb82fb0b9ffa275daa096929ecf45a311b457b9f518cf4c63216030dfd75562a6878ea6a1df0d7aaeee3a134bd11663471bba8490cf0aba208e3d37a

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