dc80b61f9be0c91ee87b1f35c6feed0339feaa33910fc46ee51a26f0ff677a36

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29/09/2024, 18:32

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General

Target

2024-09-29_70815a7030d24598df9c0a6ffeef3910_cryptolocker.exe
Size

32KB
MD5

70815a7030d24598df9c0a6ffeef3910
SHA1

8cd1a705952b9365083035279cef3ba17177139e
SHA256

dc80b61f9be0c91ee87b1f35c6feed0339feaa33910fc46ee51a26f0ff677a36
SHA512

7fac033d2d89d5dd46d8e4218d6436fdd0bb1f77a4888ef5e9148bf9bf893852045f7dc479bf5fd70429a6b87537265dacfc57d9342ed45118059b0f1ca6f6bf
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznBSGcu2:b/yC4GyNM01GuQMNXw2PSj4u2

Score

7^/10

discovery

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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	2024-09-29_70815a7030d24598df9c0a6ffeef3910_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3188	retln.exe

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	retln.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-29_70815a7030d24598df9c0a6ffeef3910_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4448 wrote to memory of 3188	4448	2024-09-29_70815a7030d24598df9c0a6ffeef3910_cryptolocker.exe	82
PID 4448 wrote to memory of 3188	4448	2024-09-29_70815a7030d24598df9c0a6ffeef3910_cryptolocker.exe	82
PID 4448 wrote to memory of 3188	4448	2024-09-29_70815a7030d24598df9c0a6ffeef3910_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-29_70815a7030d24598df9c0a6ffeef3910_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-29_70815a7030d24598df9c0a6ffeef3910_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4448
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3188

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

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Downloads

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

Filesize
32KB

MD5
26249a268f9e8b6f8acb592709fdfe2e

SHA1
d3b4bcb957e9c8b739690851532a0de620613812

SHA256
076f42cef52d4c6f2ee850652fc0724b6f030c32003e1daf82929c5ae461d858

SHA512
50e6555c996a6da95590162147b4906d6fdfefe49691b405b5b2d37a352198bc6ddf1fd1ad1d166cbc223c9a112e20451706652712716b321bf5395b70909001

Download Submit
memory/3188-19-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/4448-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4448-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4448-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download