b67e3989f773c88e8aa4efd28cbbbb39f35e9a4f3eed9f800b36b1fba77696c8

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
12-02-2024 17:23

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General

Target

2024-02-12_0767a00152746bd4a3e448363b341a18_cryptolocker.exe
Size

74KB
MD5

0767a00152746bd4a3e448363b341a18
SHA1

baf9904e9ea1f0c4a13a21044360398ce445dbb2
SHA256

b67e3989f773c88e8aa4efd28cbbbb39f35e9a4f3eed9f800b36b1fba77696c8
SHA512

8c01e70368407c26e2dc04df0be00dc67dcbe5b315fa97225dee2d3d32753459c871a5cfaa0f3bbd22283d97eadb6eb05eabd882f24a52a0ece2d1bb626d965c
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1eWe:X6a+SOtEvwDpjBZYvQd2e

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002321f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002321f-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	2024-02-12_0767a00152746bd4a3e448363b341a18_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3720	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 4160 wrote to memory of 3720	4160	2024-02-12_0767a00152746bd4a3e448363b341a18_cryptolocker.exe	86
PID 4160 wrote to memory of 3720	4160	2024-02-12_0767a00152746bd4a3e448363b341a18_cryptolocker.exe	86
PID 4160 wrote to memory of 3720	4160	2024-02-12_0767a00152746bd4a3e448363b341a18_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-12_0767a00152746bd4a3e448363b341a18_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_0767a00152746bd4a3e448363b341a18_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4160
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3720

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
74KB

MD5
b95f69d3dc48e4332d25f36295374549

SHA1
99a20bd79326038b32ac1de98ff3c142c2356f95

SHA256
1bbdfdba6bf74159ca519b8c457e2f8a929eb1c705f80b40dcfa11c38ac0cbb4

SHA512
eadda33355084ae6327ba16301ef9a4041bc2a0e296ab3234a4b8517457967565500b9be73e3c80ba8eec8ffecc8bc3f2f9ceec09686f79b189117a0e8c31a76

Download Submit
memory/3720-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3720-19-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/4160-0-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4160-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4160-2-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download