6fa1eec5bc2918cb05ac5009b1e7ecd2812d8e1524fdc35da8ddbf3b5ad96a5b

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
18/02/2024, 23:32

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General

Target

2024-02-18_764eaeb108085ea160212539bea9e362_cryptolocker.exe
Size

47KB
MD5

764eaeb108085ea160212539bea9e362
SHA1

f13094b0075911578a757fd28d23c38ec16e44ae
SHA256

6fa1eec5bc2918cb05ac5009b1e7ecd2812d8e1524fdc35da8ddbf3b5ad96a5b
SHA512

b6f92daae61dfdee0332e9ab940570959ad2302ac2bc1359d5d9b832a79c5ff1e143dee4334409a0a8a256d5896169590fca25e37dbfb1d6c5184e0aeb8ae369
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55SSOzO:X6QFElP6n+gJQMOtEvwDpjB0GIWStzO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0010000000023155-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0010000000023155-12.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-18_764eaeb108085ea160212539bea9e362_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2972	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 3152 wrote to memory of 2972	3152	2024-02-18_764eaeb108085ea160212539bea9e362_cryptolocker.exe	85
PID 3152 wrote to memory of 2972	3152	2024-02-18_764eaeb108085ea160212539bea9e362_cryptolocker.exe	85
PID 3152 wrote to memory of 2972	3152	2024-02-18_764eaeb108085ea160212539bea9e362_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-18_764eaeb108085ea160212539bea9e362_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_764eaeb108085ea160212539bea9e362_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2972

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
47KB

MD5
98ac63d31867bf2626fb5d933fc7ad57

SHA1
c78b8847f8e2da01cf5862b89e7c2d02772631c5

SHA256
5f6b9800eac0854195273ebbe83b1cd83850e734d66702ddb7c49f0372631e66

SHA512
8c81041f653f778c569bb98d2be18d088ae731ee2b3a91d8549f02465f47841860c689610689a7ffef9333182788624508e19282c0d44f6c9a5755b26311d4c0

Download Submit
memory/2972-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/2972-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3152-0-0x0000000002220000-0x0000000002226000-memory.dmp

Filesize
24KB

Download
memory/3152-1-0x0000000002220000-0x0000000002226000-memory.dmp

Filesize
24KB

Download
memory/3152-2-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download