289333beb8bcdd62d1f1c936e558ec33eacc5db29a16f0a9a975e60f58502b19

Analysis

max time kernel
165s
max time network
49s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04/02/2023, 20:13

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General

Target

Gravels Hammers v4 1.1 RP/blocks.json
Size

83B
MD5

c8d70d463d0593e839dd77a405ddf992
SHA1

10b307952cba71abaa15c986955c6b5f56585f77
SHA256

d636af371b6f77c86b0d844a64952bee38d30888825edc0c11396fc9d2bb3345
SHA512

444ffff351784300e15c20f16f1b29c0c6cd7c76a9dfa911fd4e16b69559988c74339c2055afff8dcb83c3a67891059259b8ff48c24a94bb7d97424f30b0ef9a

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\json_auto_file\shell\Read\command	rundll32.exe
Key created	\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_auto_file\shell\Read	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	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
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

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1336	AcroRd32.exe
1336	AcroRd32.exe
1336	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 940 wrote to memory of 1212	940	cmd.exe	29
PID 940 wrote to memory of 1212	940	cmd.exe	29
PID 940 wrote to memory of 1212	940	cmd.exe	29
PID 1212 wrote to memory of 1336	1212	rundll32.exe	30
PID 1212 wrote to memory of 1336	1212	rundll32.exe	30
PID 1212 wrote to memory of 1336	1212	rundll32.exe	30
PID 1212 wrote to memory of 1336	1212	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Gravels Hammers v4 1.1 RP\blocks.json"
1⤵
- Suspicious use of WriteProcessMemory
PID:940
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Gravels Hammers v4 1.1 RP\blocks.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1212
- - 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\Gravels Hammers v4 1.1 RP\blocks.json"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1336

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/940-54-0x000007FEFC2C1000-0x000007FEFC2C3000-memory.dmp

Filesize
8KB

Download
memory/1336-82-0x00000000756B1000-0x00000000756B3000-memory.dmp

Filesize
8KB

Download