c0ad73aea5ef4092736db44c301ddd6b2f4caa7ef051d67c9a4087eebca2db59

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
03/05/2024, 00:42

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General

Target
Release/Compilers/tinycc/include/fenv.h
Size 3KB
Sample240503-a2rnmscg34
SHA256 67a827acf4e09653afb5d18f2ecaa5fcdfb7471d8a5b8197c2f33d06e8462f84
MD5 deec7c35f77ec8e22074667641ca8851
SHA1 8cce6b663a9a04b3c13aa6621b0798e487a8a88e
SHA512 8de2b82b0579e6c37546a26bc1ab5d7603090e815d8ce728474b1405339ab4ef4f0794df19ff4cc3780aa7259288d4d93fd50b0e9c63d413ff22ad5e72bfcbe5
MD5 SHA1 SHA512

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\h_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\h_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\h_auto_file\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\h_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\h_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.h	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\h_auto_file\shell\edit	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\h_auto_file\shell\edit\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\h_auto_file\shell\open	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\h_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.h\ = "h_auto_file"	rundll32.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2652	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 2112	2340	cmd.exe	29
PID 2340 wrote to memory of 2112	2340	cmd.exe	29
PID 2340 wrote to memory of 2112	2340	cmd.exe	29
PID 2112 wrote to memory of 2652	2112	rundll32.exe	30
PID 2112 wrote to memory of 2652	2112	rundll32.exe	30
PID 2112 wrote to memory of 2652	2112	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Release\Compilers\tinycc\include\fenv.h
1⤵
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Release\Compilers\tinycc\include\fenv.h
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2112
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\Release\Compilers\tinycc\include\fenv.h
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:2652

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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