36cd73b201a2049e42601becf65aeb2366411b755c8f016b96d4a44d09b11d73

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23-04-2024 05:43

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General

Target

2024-04-23_f08f5b2185b6f06dc0838229a2fb895b_cryptolocker.exe
Size

84KB
MD5

f08f5b2185b6f06dc0838229a2fb895b
SHA1

3c1400d35bee799cff01a66504ae82e7b73d2e74
SHA256

36cd73b201a2049e42601becf65aeb2366411b755c8f016b96d4a44d09b11d73
SHA512

3315e69311a252ab8b8ab20be90ae3b573d1730fc3ff8ca5df3fd7dcf044819701dd230c6e778a730dc270bcded8767c0b38bb4f9eacce913579f5fd3cbc4cd8
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnYg:V6QFElP6n+gMQMOtEvwDpjyaLccVNl6g

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-23_f08f5b2185b6f06dc0838229a2fb895b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3824	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 3664 wrote to memory of 3824	3664	2024-04-23_f08f5b2185b6f06dc0838229a2fb895b_cryptolocker.exe	85
PID 3664 wrote to memory of 3824	3664	2024-04-23_f08f5b2185b6f06dc0838229a2fb895b_cryptolocker.exe	85
PID 3664 wrote to memory of 3824	3664	2024-04-23_f08f5b2185b6f06dc0838229a2fb895b_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-23_f08f5b2185b6f06dc0838229a2fb895b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_f08f5b2185b6f06dc0838229a2fb895b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3664
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3824

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
85KB

MD5
bcf0aaa576cbdc10843c72c073e33bf4

SHA1
f6086522c5c03afd5fc2a6a5166dbab2f58d3881

SHA256
9c710c83308a5c891589dd2f52f4b21b5e055bf8d599feae08f775ae15a8feba

SHA512
1a9389277bb81d24b244fde118bae8e2d4b1640941320ec91c9148b133eaca57211de1d9ab4d4a3c7937d0a5410de4afd0686342ed18f6a83aafa7544634216a

Download Submit
memory/3664-0-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/3664-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/3664-2-0x00000000021A0000-0x00000000021A6000-memory.dmp

Filesize
24KB

Download
memory/3824-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3824-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download