841a664c5b89efa53f10635fc97c65254c2557d3298c916964a1b87798664826

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-11-2024 06:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-11-02_111d4d9abad84e2325d0eab1bbe4dca1_cryptolocker.exe
Size

34KB
MD5

111d4d9abad84e2325d0eab1bbe4dca1
SHA1

34c77a5db1dd31a126b3456b6feae5ce07a5d810
SHA256

841a664c5b89efa53f10635fc97c65254c2557d3298c916964a1b87798664826
SHA512

97495f138850276ea77033fbff14292b78a023d53cc4e70fec4b66292075a071e11089da22c6cf230d23fbbb3e5f730abd5f8da453d065addc8cd457e3cb1876
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgYKO:b/yC4GyNM01GuQMNXw2PSjSKkcJYKO

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

Processes:

2024-11-02_111d4d9abad84e2325d0eab1bbe4dca1_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2024-11-02_111d4d9abad84e2325d0eab1bbe4dca1_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

retln.exe

pid process

5028 retln.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5028	retln.exe

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

Processes:

2024-11-02_111d4d9abad84e2325d0eab1bbe4dca1_cryptolocker.exeretln.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-02_111d4d9abad84e2325d0eab1bbe4dca1_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-11-02_111d4d9abad84e2325d0eab1bbe4dca1_cryptolocker.exe

description	pid	process	target process
PID 3624 wrote to memory of 5028	3624	2024-11-02_111d4d9abad84e2325d0eab1bbe4dca1_cryptolocker.exe	retln.exe
PID 3624 wrote to memory of 5028	3624	2024-11-02_111d4d9abad84e2325d0eab1bbe4dca1_cryptolocker.exe	retln.exe
PID 3624 wrote to memory of 5028	3624	2024-11-02_111d4d9abad84e2325d0eab1bbe4dca1_cryptolocker.exe	retln.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-02_111d4d9abad84e2325d0eab1bbe4dca1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-02_111d4d9abad84e2325d0eab1bbe4dca1_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3624

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:5028

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

Loading Replay Monitor...

Downloads

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

Filesize
35KB

MD5
0594592eee7383c84879e0ecff83f114

SHA1
564a3840beaf248c34b9c8c740afee1608a69db7

SHA256
2b518220fe8565cf09770c123cec5d4d6aa3c99ae838061fc2ba0c003c495891

SHA512
79b5973f14a99b3faf6b0cde9e745fd12a84e7ec0ac51b9b2d0e53da4f34ceb0b05610a394422f6403ed62e1d6efcd2638a1c5039dc4e901768bcdcb54276c7b

Download Submit
memory/3624-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3624-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3624-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5028-25-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download