61d6a12a61b3136a89d22eb3d4ee03e5456e64d7c7ada5381142f8e275d52ba9

Analysis

max time kernel
176s
max time network
37s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
29/11/2022, 12:48

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General

Target

eteyvfyhrefyscymb/fjfmjalkpfpjmgwtcbpmb.class
Size

3KB
MD5

e6f0bbcf2c33fee74559cac1c4e4e053
SHA1

36832b6f1cc452565daa85a51094e8b261968a1c
SHA256

3f04a1d659b57a4228a5b21e9fe44838993ea9e85cda9a5dd3df783bf99ad0eb
SHA512

3b6da9aaa6f7e30bb75a234a2a5f0555781867dc97adafda0946e9aa168253662e49ae1e00b84c8b38cb9a8122f375d25708beb998ee1fbbfbe392ff6d812547

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-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\class_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\.class	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\class_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\class_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1808	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1808	AcroRd32.exe
1808	AcroRd32.exe
1808	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 320	2020	cmd.exe	29
PID 2020 wrote to memory of 320	2020	cmd.exe	29
PID 2020 wrote to memory of 320	2020	cmd.exe	29
PID 320 wrote to memory of 1808	320	rundll32.exe	30
PID 320 wrote to memory of 1808	320	rundll32.exe	30
PID 320 wrote to memory of 1808	320	rundll32.exe	30
PID 320 wrote to memory of 1808	320	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\eteyvfyhrefyscymb\fjfmjalkpfpjmgwtcbpmb.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\eteyvfyhrefyscymb\fjfmjalkpfpjmgwtcbpmb.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:320
- - 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\eteyvfyhrefyscymb\fjfmjalkpfpjmgwtcbpmb.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1808

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/1808-82-0x0000000074FD1000-0x0000000074FD3000-memory.dmp

Filesize
8KB

Download
memory/2020-54-0x000007FEFBB11000-0x000007FEFBB13000-memory.dmp

Filesize
8KB

Download