3278b4ad21e9083f57b5c7e9aa8e9bcd7bd26944bbb013b1bd2f445a1819495e

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2024 04:37

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General

Target

2024-03-28_5617a90d13b7ea1863904bdbf36fd099_cryptolocker.exe
Size

40KB
MD5

5617a90d13b7ea1863904bdbf36fd099
SHA1

d0c67e6962d4c0062392fd293f1019304046915d
SHA256

3278b4ad21e9083f57b5c7e9aa8e9bcd7bd26944bbb013b1bd2f445a1819495e
SHA512

aaceabfdaf065dc9ea4921d5ae1f1e66bd0901470eb522a575c27018fecc7187e243fdc5fe30ffd18a16aa9cff8d492c32a10553184931b6f67425c4acd12141
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRs7:X6QFElP6n+gJQMOtEvwDpjBmzDkq7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c00000002316a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c00000002316a-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-28_5617a90d13b7ea1863904bdbf36fd099_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3724	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 3556 wrote to memory of 3724	3556	2024-03-28_5617a90d13b7ea1863904bdbf36fd099_cryptolocker.exe	84
PID 3556 wrote to memory of 3724	3556	2024-03-28_5617a90d13b7ea1863904bdbf36fd099_cryptolocker.exe	84
PID 3556 wrote to memory of 3724	3556	2024-03-28_5617a90d13b7ea1863904bdbf36fd099_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-03-28_5617a90d13b7ea1863904bdbf36fd099_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_5617a90d13b7ea1863904bdbf36fd099_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3556
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3724

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
40KB

MD5
5ebddbc29f7a7e1b8a91141e8095e59d

SHA1
d84e66882770a60bf138419aa23b73bf00a6d1b5

SHA256
6350efc14d8b20e32e64076b23fa70ea867ea6712a8c9a7774712be2b98ea02f

SHA512
1b281cfb0020ad912dbea1613d61c414439d81df3a364cad6b0399152394b6b2e546ebf788584789ee36870b720ad371a02b209ea56b3bfbaee0bf96b86d6fa0

Download Submit
memory/3556-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3556-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3556-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/3724-17-0x0000000000820000-0x0000000000826000-memory.dmp

Filesize
24KB

Download
memory/3724-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download