d8f7bc86befff6d49bc2a58cd3eb303fbe92ce532346bedaacb9257c651edc73

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
17-05-2024 05:42

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General

Target

2024-05-17_99ed29bc8e8608bee96640ab0a9e3779_cryptolocker.exe
Size

44KB
MD5

99ed29bc8e8608bee96640ab0a9e3779
SHA1

5f616fa8017d32484033a11f6698bfcb8b2ce0fa
SHA256

d8f7bc86befff6d49bc2a58cd3eb303fbe92ce532346bedaacb9257c651edc73
SHA512

bca8595b95363ea26520e75478b8a17afa700a448b900b800d622f93e89f9cc551fb7044c5065bebd1ed7c8b9ffa582942a7ffca7b77d37aa26ddd601f147553
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD9H5:X6QFElP6n+gJQMOtEvwDpjBmzDkWDt5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023276-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023276-12.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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-17_99ed29bc8e8608bee96640ab0a9e3779_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4848	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 1460 wrote to memory of 4848	1460	2024-05-17_99ed29bc8e8608bee96640ab0a9e3779_cryptolocker.exe	82
PID 1460 wrote to memory of 4848	1460	2024-05-17_99ed29bc8e8608bee96640ab0a9e3779_cryptolocker.exe	82
PID 1460 wrote to memory of 4848	1460	2024-05-17_99ed29bc8e8608bee96640ab0a9e3779_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-17_99ed29bc8e8608bee96640ab0a9e3779_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-17_99ed29bc8e8608bee96640ab0a9e3779_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4848

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
44KB

MD5
b8fb60fd97082809ac15f1612f211d9b

SHA1
7289cb5594c749e3723cacf18bd64d75cf4e1b14

SHA256
70a67907eeca8aa7ae96c911fc5c7b700450d0ae863ed16c0243fd3ade72e32d

SHA512
7bbe31aaeb39d67506f18cb28054ecb30e99f56daf4d46edc095d0d2c98fb57ddbdbe93cf549d4cd11e8c073acb9eead608a4e35ecc5ae7a9b63502960af7dd8

Download Submit
memory/1460-0-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/1460-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1460-8-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4848-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4848-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download