dfe67907ebbf9619cae3c5d888c60f78958325a9bbbcab48b11f5424b8fc7ffd

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/10/2024, 02:33

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General

Target

2024-10-06_48e459ac2abe5adeb4ec5735fbbbf88d_cryptolocker.exe
Size

34KB
MD5

48e459ac2abe5adeb4ec5735fbbbf88d
SHA1

350d85a54999e8dfe9ea78f2572951303cf8dc90
SHA256

dfe67907ebbf9619cae3c5d888c60f78958325a9bbbcab48b11f5424b8fc7ffd
SHA512

15674783c38dd7c23bf64f0bbd2698c5445941d881d60295e9e33fb9e57adf82e9068da6d4f2af02caa09b2c5493891dbd548dae252c2646bf816d427a7a7ff4
SSDEEP

768:bROjawZEjbhxnbcuyD7U9kXfn62tH/1/LpP+K:bRO2wZEjbnouy8Gv6iH/NLpD

Score

7^/10

discovery upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	2024-10-06_48e459ac2abe5adeb4ec5735fbbbf88d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3268	rewok.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4912-0-0x0000000000400000-0x000000000040D000-memory.dmp	upx
behavioral2/files/0x00090000000233c2-13.dat	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-06_48e459ac2abe5adeb4ec5735fbbbf88d_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 3268	4912	2024-10-06_48e459ac2abe5adeb4ec5735fbbbf88d_cryptolocker.exe	82
PID 4912 wrote to memory of 3268	4912	2024-10-06_48e459ac2abe5adeb4ec5735fbbbf88d_cryptolocker.exe	82
PID 4912 wrote to memory of 3268	4912	2024-10-06_48e459ac2abe5adeb4ec5735fbbbf88d_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-10-06_48e459ac2abe5adeb4ec5735fbbbf88d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-06_48e459ac2abe5adeb4ec5735fbbbf88d_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3268

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
34KB

MD5
b133f571ece53781569cf77948480e86

SHA1
915997d1c6280f71557f6961c921eb164e1736f4

SHA256
117e6ae0ebf3c330897d5636da043445041aa1b3cf6ca5343911f04bae58dbbe

SHA512
c448c9bd1d7c0af72aaf6a353ba354805a437760ed93be61e501bf00404995a146ca32928665dcb9852a80bb5d7af880e4382d5b9ddc64469d5a3ea389a0f46f

Download Submit
memory/3268-19-0x0000000002D50000-0x0000000002D56000-memory.dmp

Filesize
24KB

Download
memory/4912-0-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/4912-1-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/4912-2-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/4912-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download