f11ccb535657b25fc559bcf11c2651656715176528478f1a0eca0f2053fca469

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 13:41

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General

Target

2024-03-15_5dde0a380d252e4e51272f8754a983e1_cryptolocker.exe
Size

37KB
MD5

5dde0a380d252e4e51272f8754a983e1
SHA1

dae1b1c82a1c2d7ca421d1c5ba3879f2f35dc275
SHA256

f11ccb535657b25fc559bcf11c2651656715176528478f1a0eca0f2053fca469
SHA512

ac029ea5a14cfc9adb816ace9959d85c91ec521e7d90af8d702c545b5962660221202305d4e656e23c2e1c115cd15d05991041d87bbb1f16ad4f2fecbf068a66
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunIVpeNs23mAA6luXIy:bA74zYcgT/Ekd0ryfjPIunqpeNswmNXJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-15_5dde0a380d252e4e51272f8754a983e1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1308	hasfj.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 1252 wrote to memory of 1308	1252	2024-03-15_5dde0a380d252e4e51272f8754a983e1_cryptolocker.exe	89
PID 1252 wrote to memory of 1308	1252	2024-03-15_5dde0a380d252e4e51272f8754a983e1_cryptolocker.exe	89
PID 1252 wrote to memory of 1308	1252	2024-03-15_5dde0a380d252e4e51272f8754a983e1_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-15_5dde0a380d252e4e51272f8754a983e1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_5dde0a380d252e4e51272f8754a983e1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1252
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1308

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\hasfj.exe

Filesize
37KB

MD5
d9cd407afa65af131dd71bf0bab20f5c

SHA1
85b8f502e2efb24e303530c9387d65f54cc3b115

SHA256
bbc0f1e2107bd1e15f111fe456cf5a7a4a53d53063f19859dc08545d5141a728

SHA512
a22249ac5c5a19d656bd66e301a48d95628e8e1841ff345821082db9293b4821ecdc170a5cf712b7dd8a79e7be7a72f53f77abd0ce493b2e89e3071685178e65

Download Submit
memory/1252-0-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/1252-1-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/1252-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1308-18-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/1308-17-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download