87f42297524630cdeb7301f5c37b71403b813a469bada5b68ccfb582fe8f7410

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 05:46

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General

Target

2024-02-28_fe720ca008bb9986768091ceb29a4c39_cryptolocker.exe
Size

84KB
MD5

fe720ca008bb9986768091ceb29a4c39
SHA1

835816b001c3ccaae1fa4cd6972001e69a4f5cbc
SHA256

87f42297524630cdeb7301f5c37b71403b813a469bada5b68ccfb582fe8f7410
SHA512

4a4bc44ffe615b64d48f5c2936943048b9c30b0ddc5cc222f941b00533fd8c649da4a02011eef6d5e76992ac2c4ce5825cbcb9059f80115bf4fff1b0e5cd76f2
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNlVSLQ89:V6a+pOtEvwDpjvpq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-02-28_fe720ca008bb9986768091ceb29a4c39_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4688	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 1492 wrote to memory of 4688	1492	2024-02-28_fe720ca008bb9986768091ceb29a4c39_cryptolocker.exe	91
PID 1492 wrote to memory of 4688	1492	2024-02-28_fe720ca008bb9986768091ceb29a4c39_cryptolocker.exe	91
PID 1492 wrote to memory of 4688	1492	2024-02-28_fe720ca008bb9986768091ceb29a4c39_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-02-28_fe720ca008bb9986768091ceb29a4c39_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_fe720ca008bb9986768091ceb29a4c39_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4688

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
84KB

MD5
2de74d3da52b15280535f5935bf9333b

SHA1
bb80955ce5543154e31dc10de341ae54f8c6d956

SHA256
31a0fab73c1366e5ddab7990878011a8a5292915ad638020d8810f0aa638215a

SHA512
222c417e4ea978305f2bea1db504d2118f1bbd090af3663eede2eed78b19f4f32bff1305b3978204cfb89a6f00cde9c9b4b201df7dac13fbc9e4981b70e69261

Download Submit
memory/1492-0-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/1492-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/1492-2-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/4688-17-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4688-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download