bc1406c0f2b353ad994096c616eb269b760c443335b219a7a5a16b801ea16505

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 14:30

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General

Target

2024-03-25_9faf328f7b247ac8e9ed84164497285f_cryptolocker.exe
Size

80KB
MD5

9faf328f7b247ac8e9ed84164497285f
SHA1

736737666ae839a7cd5f176788cc5d516e039e2c
SHA256

bc1406c0f2b353ad994096c616eb269b760c443335b219a7a5a16b801ea16505
SHA512

710e296f4e768b4d213f387c214c8f20d0b53da97d958c4d1e501325ba2f6f32c4770466e91b2194aa507a53bcdb8330959b2c5097e8dabfa390ac0ed38ec747
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNlmnF:V6a+pOtEvwDpjvp0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023209-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023209-12.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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-25_9faf328f7b247ac8e9ed84164497285f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4948	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 2292 wrote to memory of 4948	2292	2024-03-25_9faf328f7b247ac8e9ed84164497285f_cryptolocker.exe	90
PID 2292 wrote to memory of 4948	2292	2024-03-25_9faf328f7b247ac8e9ed84164497285f_cryptolocker.exe	90
PID 2292 wrote to memory of 4948	2292	2024-03-25_9faf328f7b247ac8e9ed84164497285f_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-25_9faf328f7b247ac8e9ed84164497285f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_9faf328f7b247ac8e9ed84164497285f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4948

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
80KB

MD5
2f6e7675d5af9413f79badff5d5ff8d8

SHA1
5ce28a2c42c4d70ca6429926e6ae6cee372874c5

SHA256
f0b4f5814c89eaf457890e95b730f46bdcb163c33d598f897aecab2a4484f206

SHA512
84914be3a3646b6757412f147b68d5c1caaf5358c8311f4ef9c55a9c90a1d0260f4ad22816e9cd97627137e065c9b8f189fcd880a9bc5e26f6803c47753a6242

Download Submit
memory/2292-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2292-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2292-2-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4948-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download