e45d9783e91c4af4861345ba9f21a76fee550147804cc0d9fc5f742f1d9c8b3a

Resubmissions

21-09-2023 17:49

230921-wdzv1ahf5w 10

21-09-2023 17:47

230921-wc9zksbf87 10

19-09-2023 14:09

230919-rf6zwabe79 10

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
19-09-2023 14:09

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General

Target

Creal.pyc
Size

127KB
MD5

44c85d3d087330a3e850d38f6c8c21a5
SHA1

edc286da0ae5b707b8d2bfecec45e0a2462179fe
SHA256

33dbc89850480d29799c784fe49c495f5916c915ce143395e3eab526dde357f5
SHA512

ea02e050f8cdbec3b07a08eabfbc5f82c0c15e242d63e44ed50a09d3c01730929ce9144d32ec808c8b62b54178e09379c88bfb08d151320796385dacb7920c8b
SSDEEP

3072:TO+5IxGJdOiq3y5mdfVnRZCi8jzCVyWm7mEK6ONBxzZmBh9eJv97ezujYM9S:oCdV6y5gfVRZCPxWm4RZzyh94vxezuj2

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-1-5-21-2180306848-1874213455-4093218721-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_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-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2180306848-1874213455-4093218721-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2784	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2784	AcroRd32.exe
2784	AcroRd32.exe
2784	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 2604	2260	cmd.exe	29
PID 2260 wrote to memory of 2604	2260	cmd.exe	29
PID 2260 wrote to memory of 2604	2260	cmd.exe	29
PID 2604 wrote to memory of 2784	2604	rundll32.exe	30
PID 2604 wrote to memory of 2784	2604	rundll32.exe	30
PID 2604 wrote to memory of 2784	2604	rundll32.exe	30
PID 2604 wrote to memory of 2784	2604	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Creal.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Creal.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2604
- - 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\Creal.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2784

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
7fbf5c39f9aea8c13b731c150d79191d

SHA1
f62c8379657b0f6dda5f03e8706d12a20db19648

SHA256
e940d10f7be0bee9d6b4d4db1a444330310697d655dbb289887d0cc7b58c75be

SHA512
a48bdc9b9504badd32b4cbd40822d95fc2126eb44b48ae993f5c49d6c611ef6b9a16dda4e57f26c8f6a4dae46899584e8c4927488a495a6c7b634f3aa6084982

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