6fbeaf8c2148da058c61cd64612202444318cdcd80718a9f2c292270c1cb6ece

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 05:31

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General

Target

2024-09-19_8b0f3cf2eb1c4df8df083e1ac585b1cc_cryptolocker.exe
Size

43KB
MD5

8b0f3cf2eb1c4df8df083e1ac585b1cc
SHA1

d4014bb3da4a23518d14924faa3d586be88ec1c2
SHA256

6fbeaf8c2148da058c61cd64612202444318cdcd80718a9f2c292270c1cb6ece
SHA512

14dd3d958c6d37a20269afa166cf1cf39da74f80c76587afa85c8ca3f6e006f40314309508eb9e40f059b3633b10139f523a4ce2c9848a04c858bab39d773592
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAL:b/pYayGig5HjS3NPAL

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	2024-09-19_8b0f3cf2eb1c4df8df083e1ac585b1cc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4000	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	2024-09-19_8b0f3cf2eb1c4df8df083e1ac585b1cc_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3228 wrote to memory of 4000	3228	2024-09-19_8b0f3cf2eb1c4df8df083e1ac585b1cc_cryptolocker.exe	82
PID 3228 wrote to memory of 4000	3228	2024-09-19_8b0f3cf2eb1c4df8df083e1ac585b1cc_cryptolocker.exe	82
PID 3228 wrote to memory of 4000	3228	2024-09-19_8b0f3cf2eb1c4df8df083e1ac585b1cc_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_8b0f3cf2eb1c4df8df083e1ac585b1cc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_8b0f3cf2eb1c4df8df083e1ac585b1cc_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3228
- 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:4000

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\retln.exe

Filesize
43KB

MD5
0e18d4d535f4319090e53e326a38843b

SHA1
6f70e7a92582cef66684f73514f4f4ab158562f0

SHA256
ea463e3788da4ea081381ef4310129548ab14b17f4e6ca7c8cfe4999f5116bef

SHA512
596d54b0d37ffda38aff5482d9b43a85f60e31950d5d48935f110343c9ec8867c27b0b775e2e7f18f2d5f0bc4cf94c0e17411993a40c44ab23525b6a2dd9696e

Download Submit
memory/3228-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3228-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3228-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4000-19-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download