3bff8370eb98421757a64b9da4f643830fcf848deb874c3c1797124ec2d31e92

Analysis

max time kernel
150s
max time network
124s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
15-11-2023 14:42

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General

Target

CYvWg139.bin
Size

483KB
MD5

fae7ab646200e98fafcdaacceab0f63b
SHA1

b70c513c51783dc466d90b3b5867e02ddf594e11
SHA256

3bff8370eb98421757a64b9da4f643830fcf848deb874c3c1797124ec2d31e92
SHA512

598c343d23eb48dfa1778e09b2ea05dee22aa99e45a40c1c899afecc576624c3a721cfcfdde6ff61177eb408aca2df3b23257d71c6d0aff2d34541d2eb596697
SSDEEP

12288:RRXRnwCqMwwhOrW4ULRVKAhqHb5v7IDR1IyOkZ:RRBV+W4yRV1qHWR1I7c

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-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\bin_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\.bin\ = "bin_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\bin_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\bin_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\bin_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\bin_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\.bin	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2952504676-3105837840-1406404655-1000_CLASSES\bin_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2752	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2752	AcroRd32.exe
2752	AcroRd32.exe
2752	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 2236	2372	cmd.exe	29
PID 2372 wrote to memory of 2236	2372	cmd.exe	29
PID 2372 wrote to memory of 2236	2372	cmd.exe	29
PID 2236 wrote to memory of 2752	2236	rundll32.exe	30
PID 2236 wrote to memory of 2752	2236	rundll32.exe	30
PID 2236 wrote to memory of 2752	2236	rundll32.exe	30
PID 2236 wrote to memory of 2752	2236	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\CYvWg139.bin
1⤵
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\CYvWg139.bin
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2236
- - 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\CYvWg139.bin"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2752

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
eda50499ebb767ee8423b788b7cc1d1f

SHA1
147c9e5cdee585d7c51e6a6009aa9b48a8407b06

SHA256
99e9d751158c5162de26054541a2c03cdf32920db992c858903498cbcec9755a

SHA512
a6d2b0faff359cb181fe8773efd34fd8e2173c6474daca34f0ebdee9859248f8cd24da15abdf809f76d5c94dc7b5ec424f701dbd430665ddaca34643bd5c2483

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