61d6a12a61b3136a89d22eb3d4ee03e5456e64d7c7ada5381142f8e275d52ba9

Analysis

max time kernel
150s
max time network
47s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29/11/2022, 12:48

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General

Target

eteyvfyhrefyscymb/apgcbcnetns.class
Size

1KB
MD5

f4a14d3c35a1fde5b1f32afb55be1195
SHA1

1220e1410a7e95981fe70afee62e232d7109fe6f
SHA256

ec59fed294e35f5195dc3626b08068018c07476297917bc390d987126ba28f86
SHA512

600441986395ce786f7a9c0325a3238d8023899b4f9770cc0901ea7d7ded3d631947ef54c88b09b9e5c5beb2a1f0f6ccfcd97d719e1b68f522d3440851c48434

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-1-5-21-2292972927-2705560509-2768824231-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_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-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.class	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\class_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
756	AcroRd32.exe
756	AcroRd32.exe
756	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 864 wrote to memory of 2024	864	cmd.exe	28
PID 864 wrote to memory of 2024	864	cmd.exe	28
PID 864 wrote to memory of 2024	864	cmd.exe	28
PID 2024 wrote to memory of 756	2024	rundll32.exe	29
PID 2024 wrote to memory of 756	2024	rundll32.exe	29
PID 2024 wrote to memory of 756	2024	rundll32.exe	29
PID 2024 wrote to memory of 756	2024	rundll32.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\eteyvfyhrefyscymb\apgcbcnetns.class
1⤵
- Suspicious use of WriteProcessMemory
PID:864
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\eteyvfyhrefyscymb\apgcbcnetns.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2024
- - 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\apgcbcnetns.class"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:756

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/756-82-0x0000000075141000-0x0000000075143000-memory.dmp

Filesize
8KB

Download
memory/864-54-0x000007FEFB931000-0x000007FEFB933000-memory.dmp

Filesize
8KB

Download