ee0c0dc46fce3803603995d998a1a09618f743e88bf26f3a256b5555a72ef978

Analysis

max time kernel
152s
max time network
47s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/11/2022, 15:04

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General

Target

gonb1723/ConfusingClassLoader.class
Size

1KB
MD5

ad9258e3389c525641adf3f3e7e5ad02
SHA1

4096f6550c9a8e6620cab198bd67d0b289261955
SHA256

9e4892c717bd03a23db26722d6c8440a76422029110d53fb0301eeaffc2f25c2
SHA512

b3a1915f95bea868d26b9569206788b1d687d6a1720a0167710367ef5324a8a06520d7132c40b985a474892e4ae144b54b6abfdc222b18025892bcba2729733a

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
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_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-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.class	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\class_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
544	AcroRd32.exe
544	AcroRd32.exe
544	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 1448	1896	cmd.exe	29
PID 1896 wrote to memory of 1448	1896	cmd.exe	29
PID 1896 wrote to memory of 1448	1896	cmd.exe	29
PID 1448 wrote to memory of 544	1448	rundll32.exe	30
PID 1448 wrote to memory of 544	1448	rundll32.exe	30
PID 1448 wrote to memory of 544	1448	rundll32.exe	30
PID 1448 wrote to memory of 544	1448	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\gonb1723\ConfusingClassLoader.class
1⤵
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\gonb1723\ConfusingClassLoader.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1448
- - 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\gonb1723\ConfusingClassLoader.class"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:544

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/544-82-0x0000000076041000-0x0000000076043000-memory.dmp

Filesize
8KB

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memory/1896-54-0x000007FEFBB81000-0x000007FEFBB83000-memory.dmp

Filesize
8KB

Download