ec5652bc55deca41c6ff947f0ed42ae4028725331844ff86f1c815b6d44d6d9f

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24/04/2024, 19:44

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General

Target

2024-04-24_8a58b38d1e045190220723d460ba0ec7_cryptolocker.exe
Size

39KB
MD5

8a58b38d1e045190220723d460ba0ec7
SHA1

e5ec1eb22ceead84f5d8dbb33184348b4eae8bfd
SHA256

ec5652bc55deca41c6ff947f0ed42ae4028725331844ff86f1c815b6d44d6d9f
SHA512

cbed0de15468e6fc1168e3b046087613cefab79fa995a69d5b27c8506a880626fd981e6592773ba8109196f2669d23db6804a268a6f0f1d23c0e8cdf01218a0a
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5axZmGRo:V6QFElP6n+gMQMOtEvwDpjyaYa/mmo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.dat	CryptoLocker_set1

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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-24_8a58b38d1e045190220723d460ba0ec7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
536	asih.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 2336 wrote to memory of 536	2336	2024-04-24_8a58b38d1e045190220723d460ba0ec7_cryptolocker.exe	86
PID 2336 wrote to memory of 536	2336	2024-04-24_8a58b38d1e045190220723d460ba0ec7_cryptolocker.exe	86
PID 2336 wrote to memory of 536	2336	2024-04-24_8a58b38d1e045190220723d460ba0ec7_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-24_8a58b38d1e045190220723d460ba0ec7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_8a58b38d1e045190220723d460ba0ec7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:536

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\asih.exe

Filesize
39KB

MD5
5ea1a6efa784b007a1b6d57331b216bb

SHA1
2f4df7a28228a7e23a11812b8d3dfc23f6f8e14e

SHA256
2aa6259ac63bff96e3833859212ad6389f062eb90a5b1767dd014e3c47543a85

SHA512
ab34b931e9c1621365f92ab73a9a1353af1c0b1309f9c653a8d06c2de9090f1e93c86d83d844e4988fee19ec1bc23487dc0c12de8ce085379358b7ed3ccb0292

Download Submit
memory/536-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/536-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2336-0-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2336-1-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2336-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download