bcfa9fc0b223c49baca3ac64ed6025355b07a67be93e482386a74748afa8e442

Resubmissions

07/03/2024, 09:34

240307-lj9bhsgc99 7

07/03/2024, 09:31

240307-lhafssgc68 7

07/03/2024, 09:29

240307-lf3dssgc37 7

Analysis

max time kernel
121s
max time network
127s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/03/2024, 09:31

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General

Target

EkexClient.exe.pyc
Size

69KB
MD5

2a4c573d98e6559ddc315dfc091a841a
SHA1

396ec4ae1c2845a867ddd3010db5da3be86c5740
SHA256

ad38b897bf067494c60d592e27b36d187691b66f8fb07639c6bc436f1838d775
SHA512

729096e3305421e02e3d4ddb2c2094c84bd38f264c01230bb9b127b4cf75de01bbaafb9dcf7a54d1b800521d5a59b70535ec9b6de2931a15999c71e1f3d00b54
SSDEEP

768:0+PS3Irw/gMxvCWUL8OsvPi3K2nFcWAXTxcPdCA79/GleK1AnjdRnrBI5y:0TIrYv+SNxjlJKpVrn

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-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000_CLASSES\pyc_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2516	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2516	AcroRd32.exe
2516	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1332 wrote to memory of 1280	1332	cmd.exe	29
PID 1332 wrote to memory of 1280	1332	cmd.exe	29
PID 1332 wrote to memory of 1280	1332	cmd.exe	29
PID 1280 wrote to memory of 2516	1280	rundll32.exe	30
PID 1280 wrote to memory of 2516	1280	rundll32.exe	30
PID 1280 wrote to memory of 2516	1280	rundll32.exe	30
PID 1280 wrote to memory of 2516	1280	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\EkexClient.exe.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1332
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\EkexClient.exe.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1280
- - 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\EkexClient.exe.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2516

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
9db2a79b0daca7d01d7a3c00dc7f5f7d

SHA1
4a1b5a933b530ddd296f0e81caeada5cc1a93a47

SHA256
1ad47caa9b36f8adb5ed039f60c9f2f688c5aff6ffddba600ca610a48305ca29

SHA512
f948e48177690645ce946ba992c068da9d1939349659f9f8422f44dc2f3189bc54ba45545de64a8275670538dd694505cc368e82d7935749c5cd9cb586a3b52a

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