a68cafd7d78d5c671c2560656653f2a4d83ab66d87a8728356a88fb1f477b3e6

Analysis

max time kernel
148s
max time network
111s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04/12/2022, 06:02

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General

Target

external_extensions.json
Size

99B
MD5

280a9277b0e605e905d7f18b6148eeb7
SHA1

fcaf575897048f55b422a6dbeba943b5d550a908
SHA256

a68cafd7d78d5c671c2560656653f2a4d83ab66d87a8728356a88fb1f477b3e6
SHA512

f31635bc74f9a4b0cf07be2aabab4ec883a6b8e9ac3701b27ebad6b0ca7a88c77699e69118db0ff55b37f73fb759b8f4271e6a5defbe44aab1f6981fb1179b07

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-1-5-21-3845472200-3839195424-595303356-1000_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\json_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\json_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.json	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\json_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\json_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2004	AcroRd32.exe
2004	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 768 wrote to memory of 1972	768	cmd.exe	28
PID 768 wrote to memory of 1972	768	cmd.exe	28
PID 768 wrote to memory of 1972	768	cmd.exe	28
PID 1972 wrote to memory of 2004	1972	rundll32.exe	30
PID 1972 wrote to memory of 2004	1972	rundll32.exe	30
PID 1972 wrote to memory of 2004	1972	rundll32.exe	30
PID 1972 wrote to memory of 2004	1972	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\external_extensions.json
1⤵
- Suspicious use of WriteProcessMemory
PID:768
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\external_extensions.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1972
- - 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\external_extensions.json"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2004

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/768-54-0x000007FEFC521000-0x000007FEFC523000-memory.dmp

Filesize
8KB

Download
memory/2004-82-0x0000000076871000-0x0000000076873000-memory.dmp

Filesize
8KB

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