508f1bd504af39fb4026896e330a356d3ad1e121644979207f1a3d4bd86fa7d5

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 00:24

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-19_18dbd0e7fe640ba39121b69e0a8209e3_cryptolocker.exe
Size

36KB
MD5

18dbd0e7fe640ba39121b69e0a8209e3
SHA1

dd9b5a51a1e3e3648b3bd956b61bc1fdf62a1978
SHA256

508f1bd504af39fb4026896e330a356d3ad1e121644979207f1a3d4bd86fa7d5
SHA512

479bb5508bd8a7d679f15bc9714ce32125a40fa8c62cdb3429093a0db0f69e1f70b50555cddd47daab51a39d1971e1d9f5450ecc95c0c45e4939d704da3ae432
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBjb1iIJSFlWvmG:X6QFElP6n+gJQMOtEvwDpjBngHns

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f6-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f6-12.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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-19_18dbd0e7fe640ba39121b69e0a8209e3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4672	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 2100 wrote to memory of 4672	2100	2024-02-19_18dbd0e7fe640ba39121b69e0a8209e3_cryptolocker.exe	84
PID 2100 wrote to memory of 4672	2100	2024-02-19_18dbd0e7fe640ba39121b69e0a8209e3_cryptolocker.exe	84
PID 2100 wrote to memory of 4672	2100	2024-02-19_18dbd0e7fe640ba39121b69e0a8209e3_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_18dbd0e7fe640ba39121b69e0a8209e3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_18dbd0e7fe640ba39121b69e0a8209e3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4672

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
36KB

MD5
d291981241ee84cbbfcebd3c540d6eac

SHA1
b7417c82d985512e72e737405d7f7d01582426bd

SHA256
56277fc702c5ff249ce19fa0d8859c7190843565880575efa31bb42d0c924631

SHA512
da3fb1a65ed9a7874878bbc6155af4d8a527d76674fac5070a3fe209bfec3e49a18bea40c9525e85e2ac44df38d048aec3e928ed2d7be65233c1a4ddcbdcb57c

Download Submit
memory/2100-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2100-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2100-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4672-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4672-22-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download