9c3a2fbdc44090253a701eff4bc92bb248ef35f76ad0c9bcb48ce041631d548d

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
07-08-2024 11:03

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General

Target

CustomWinApi.hpp
Size

2KB
MD5

cbecd4f646bdc33fdd5a51c6129e0d66
SHA1

3b30641b373f04d123a037246c0c28d50722045a
SHA256

3345ba28cdb24ca73b3e3d3b4aa72ad623cdd478b7bff31e0faccf57f362ec7b
SHA512

b68b39f99886b05d14d7888f1b8d0a56b941a3032462ef7cdc1b57aee73b521783eb3954cf6fd579a43158a3674ce4ff1e9c712d7a0ee85c8a05e24347614602

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 12 IoCs

Processes:

rundll32.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\hpp_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\hpp_auto_file\shell\open	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\hpp_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\hpp_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\hpp_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\hpp_auto_file\shell\edit	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\hpp_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\hpp_auto_file\shell\edit\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\.hpp	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\.hpp\ = "hpp_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\hpp_auto_file\shell\open\command	rundll32.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

Processes:

NOTEPAD.EXE

pid	Process
2640	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

cmd.exerundll32.exe

description	pid	Process	procid_target
PID 1664 wrote to memory of 2612	1664	cmd.exe	30
PID 1664 wrote to memory of 2612	1664	cmd.exe	30
PID 1664 wrote to memory of 2612	1664	cmd.exe	30
PID 2612 wrote to memory of 2640	2612	rundll32.exe	31
PID 2612 wrote to memory of 2640	2612	rundll32.exe	31
PID 2612 wrote to memory of 2640	2612	rundll32.exe	31

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\CustomWinApi.hpp
1⤵
- Suspicious use of WriteProcessMemory
PID:1664
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\CustomWinApi.hpp
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2612
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\CustomWinApi.hpp
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:2640

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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