812dd8a051185542bb236da4dcba8a203e2be3016d73224180f4937d029c1443

Analysis

max time kernel
148s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
02-05-2024 02:36

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General

Target

2024-05-02_d3b997e4c0d71cbadcea48754aa84faf_cryptolocker.exe
Size

45KB
MD5

d3b997e4c0d71cbadcea48754aa84faf
SHA1

a67565cb88f64f0a77a3ca18ac373f6f9c9632c7
SHA256

812dd8a051185542bb236da4dcba8a203e2be3016d73224180f4937d029c1443
SHA512

721b51683f29180df31bba75dbb6ac2c688a837f74c890df931878c848d1c12d28ab2eb8bbc22571e31b440b9e9ff2cc174f03ace717847ae691cd867333b7cb
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsBu:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3Wu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b36-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b36-12.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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-05-02_d3b997e4c0d71cbadcea48754aa84faf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3312	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 5204 wrote to memory of 3312	5204	2024-05-02_d3b997e4c0d71cbadcea48754aa84faf_cryptolocker.exe	83
PID 5204 wrote to memory of 3312	5204	2024-05-02_d3b997e4c0d71cbadcea48754aa84faf_cryptolocker.exe	83
PID 5204 wrote to memory of 3312	5204	2024-05-02_d3b997e4c0d71cbadcea48754aa84faf_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-02_d3b997e4c0d71cbadcea48754aa84faf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_d3b997e4c0d71cbadcea48754aa84faf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5204
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3312

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
45KB

MD5
59603a682aac220eef151763c06d72c6

SHA1
d5b66dc618e0c5433f4804c5f8b8f42961c665f6

SHA256
b395a2f9c633ddd205384f1a262470e13ab03c966c5963077c52751b1efdd3c6

SHA512
0de75da3c0d95de1dfec27987c2810fc81a37fecd96a1c280e79165b294f5617853863ec3a8646fdaaeb0bece38773ed808130f67906d5129383f0270098c85f

Download Submit
memory/3312-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3312-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/5204-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/5204-1-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/5204-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download