d2ec9d6c8d382fcbf5c5b1e0794be4b2659526bf82018bdfcf7efb41ea9cb8ed

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
15/09/2024, 04:31

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General

Target

2024-09-15_c0859861e27c632c6263820c2e318aa4_cryptolocker.exe
Size

44KB
MD5

c0859861e27c632c6263820c2e318aa4
SHA1

359bc52a17a7b6ffb49c869a69171b7a580a3acd
SHA256

d2ec9d6c8d382fcbf5c5b1e0794be4b2659526bf82018bdfcf7efb41ea9cb8ed
SHA512

c8587beae36589d760142a6b3a9f99ce40d90a69f49840985b1b3fa0d79ea10a4e9d748381d613387960f36746647ce663d99633919c1a7f9b0807bb22743d2a
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAmds:b/pYayGig5HjS3NPAmds

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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	2024-09-15_c0859861e27c632c6263820c2e318aa4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4388	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	2024-09-15_c0859861e27c632c6263820c2e318aa4_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 1824 wrote to memory of 4388	1824	2024-09-15_c0859861e27c632c6263820c2e318aa4_cryptolocker.exe	86
PID 1824 wrote to memory of 4388	1824	2024-09-15_c0859861e27c632c6263820c2e318aa4_cryptolocker.exe	86
PID 1824 wrote to memory of 4388	1824	2024-09-15_c0859861e27c632c6263820c2e318aa4_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-09-15_c0859861e27c632c6263820c2e318aa4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-15_c0859861e27c632c6263820c2e318aa4_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1824
- 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:4388

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
44KB

MD5
ec31e90920b6e78ae98f059af772ee6f

SHA1
5dcf517ec3b13070377a34ad83b2c2357d2a4b40

SHA256
77fb0b2da7c0d9793891e7fca12dd5da54d8db784253acd880b9ac21f5aed701

SHA512
d35dd6234f5f70113d758faa43feefb057288c4cd07fa1541eb3ec6329b8b64ef9ebeb8f5220fdbaaf4f4d5d80954e11624de4c54854c50202b7f3761d4533c1

Download Submit
memory/1824-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1824-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1824-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4388-19-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download