50b0088d2b805a9fcd7214ec763ba6ede2904df12a1591b8ea3896c4fac0b1d6

Resubmissions

05/10/2022, 18:30

221005-w5fw7sfbe3 3

Analysis

max time kernel
39s
max time network
44s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
05/10/2022, 18:30

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General

Target

data_server_a.out
Size

465KB
MD5

eecc3317642775c6fe170360c35ff048
SHA1

5ba54ed3bd5a13cda409994b70dcc2b00fb511b0
SHA256

50b0088d2b805a9fcd7214ec763ba6ede2904df12a1591b8ea3896c4fac0b1d6
SHA512

bd51f81ee75335c79a5f1acca0c91a7434a40cdbef8b2dba151973afd36700d367e2aeab2841b8b950ffc9c8dd0d4aed9ed0591902591cdf4b7f323d3c0b87c5
SSDEEP

768:4xc0YRKaxxl7161fEP59fx9IdW+qvjcwYre:4x1FaB16VEP59fX+qvjc5e

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\out_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\out_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\out_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\out_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.out	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\out_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.out\ = "out_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\out_auto_file\shell\Read	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1448	AcroRd32.exe
1448	AcroRd32.exe
1448	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1348 wrote to memory of 796	1348	cmd.exe	27
PID 1348 wrote to memory of 796	1348	cmd.exe	27
PID 1348 wrote to memory of 796	1348	cmd.exe	27
PID 796 wrote to memory of 1448	796	rundll32.exe	28
PID 796 wrote to memory of 1448	796	rundll32.exe	28
PID 796 wrote to memory of 1448	796	rundll32.exe	28
PID 796 wrote to memory of 1448	796	rundll32.exe	28

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\data_server_a.out
1⤵
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\data_server_a.out
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:796
- - 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\data_server_a.out"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1448

Network

MITRE ATT&CK Enterprise v6

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

memory/1348-54-0x000007FEFB8B1000-0x000007FEFB8B3000-memory.dmp

Filesize
8KB

Download
memory/1448-82-0x00000000750A1000-0x00000000750A3000-memory.dmp

Filesize
8KB

Download