5642051a1b5af939ee4ad18a246a9c2401269d24d08c9cae2bd154bb477d1f87

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
25/01/2024, 08:26

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General

Target

2024-01-25_3650aae2f689f1d012555549ff4b1e51_cryptolocker.exe
Size

61KB
MD5

3650aae2f689f1d012555549ff4b1e51
SHA1

a4a2e50ce88bf7b2d8233e6d675cf61324a89915
SHA256

5642051a1b5af939ee4ad18a246a9c2401269d24d08c9cae2bd154bb477d1f87
SHA512

9d5a8935ad5d8fb05575d2449deeb375615a85fb9a3c3a7730c5d8a17cfac2fd55b4cd1e5c382acf20db22f0b770773b5ac17889e5b6847ffb497bb42b0ae6c2
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVCbmhkQ:V6a+pOtEvwDpjvp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000231fd-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000231fd-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	2024-01-25_3650aae2f689f1d012555549ff4b1e51_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3968	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 1508 wrote to memory of 3968	1508	2024-01-25_3650aae2f689f1d012555549ff4b1e51_cryptolocker.exe	87
PID 1508 wrote to memory of 3968	1508	2024-01-25_3650aae2f689f1d012555549ff4b1e51_cryptolocker.exe	87
PID 1508 wrote to memory of 3968	1508	2024-01-25_3650aae2f689f1d012555549ff4b1e51_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-25_3650aae2f689f1d012555549ff4b1e51_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_3650aae2f689f1d012555549ff4b1e51_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3968

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
61KB

MD5
1094ba26385ba6060661d6fad01b739e

SHA1
f6b929d253e08b699944e40a32ddf60b46a9289e

SHA256
cc79a193a6c125c413079f39e90c1cb472e4af827b2a30fce5e7e33331809b96

SHA512
94fc83144077bc8e6fce90b20d920e149d67c69c532535ec920d00918e6641a69b0e43872cb9c40fec99b1fe10833cab7fabd9a5a7bf4aa67edd1539b743c15f

Download Submit
memory/1508-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1508-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1508-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3968-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3968-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download