22a704da2d2e6990accb6a5e4b150f747a2526e5f785502d1dbc9dc832b0d509

Analysis

max time kernel
156s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2024, 04:44

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General

Target

2024-01-24_ab7c068a2d3f19be2c448411fb854c4f_cryptolocker.exe
Size

38KB
MD5

ab7c068a2d3f19be2c448411fb854c4f
SHA1

596faa0cb30e955bd22853f4aa346dfcfc148548
SHA256

22a704da2d2e6990accb6a5e4b150f747a2526e5f785502d1dbc9dc832b0d509
SHA512

5d29eec8989ca3b2439fc7199e97a7d60e2352c2043e10002ff014da0218c125e11f2b726eac3c725c36326d1a59f30dddb7ea65da43782ba7e8e79d91a23030
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlno:b/yC4GyNM01GuQMNXw2PSjHPbSuYlno

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001500000001e2b4-12.dat	CryptoLocker_rule2

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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-24_ab7c068a2d3f19be2c448411fb854c4f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1408	retln.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3204 wrote to memory of 1408	3204	2024-01-24_ab7c068a2d3f19be2c448411fb854c4f_cryptolocker.exe	87
PID 3204 wrote to memory of 1408	3204	2024-01-24_ab7c068a2d3f19be2c448411fb854c4f_cryptolocker.exe	87
PID 3204 wrote to memory of 1408	3204	2024-01-24_ab7c068a2d3f19be2c448411fb854c4f_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-24_ab7c068a2d3f19be2c448411fb854c4f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_ab7c068a2d3f19be2c448411fb854c4f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:1408

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
38KB

MD5
c54a907277f31244d48ff3de1527ff89

SHA1
14b586533bed6ab98820a413a7addf5547b85ce1

SHA256
e4a67aecc40d47115a4d73996bed32083ed0b1cdc02b7fb563e6cf3e317fa063

SHA512
ab4a4e7d9f77c2fc157a92cedc99e7a8db9d98b5cfdc1092b3fa24ee412473f0905d29fdd2d967eaab8926edf6efddc42c4c90038f1226edb687b094f7e5b2b0

Download Submit
memory/1408-19-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/3204-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3204-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3204-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download