b6d4cf82034806b29865536b2ca876663f1cd886854f3995d0f0b4644d8d2404

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 02:22

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General

Target

2024-03-06_1cc2ebafab506bac0426d9b9d93e1494_cryptolocker.exe
Size

41KB
MD5

1cc2ebafab506bac0426d9b9d93e1494
SHA1

9d7fb01b1657faaa45f2d3532c70048781612a1f
SHA256

b6d4cf82034806b29865536b2ca876663f1cd886854f3995d0f0b4644d8d2404
SHA512

5b6ff39f1237cf01f245878b28665122b8824874185c0ae84b71c67adbc3bc60c3c7a6bcb928820c88bdfc61f4850c036d026412ae2e987f580c00b227e6c358
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8POKF:bIDOw9a0Dwo3P1ojvUSDhH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0004000000022747-12.dat	CryptoLocker_rule2

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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-06_1cc2ebafab506bac0426d9b9d93e1494_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
452	lossy.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 4820 wrote to memory of 452	4820	2024-03-06_1cc2ebafab506bac0426d9b9d93e1494_cryptolocker.exe	91
PID 4820 wrote to memory of 452	4820	2024-03-06_1cc2ebafab506bac0426d9b9d93e1494_cryptolocker.exe	91
PID 4820 wrote to memory of 452	4820	2024-03-06_1cc2ebafab506bac0426d9b9d93e1494_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-06_1cc2ebafab506bac0426d9b9d93e1494_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_1cc2ebafab506bac0426d9b9d93e1494_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:452

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\lossy.exe

Filesize
41KB

MD5
a988808c5a3c39538f81847164c71bb5

SHA1
2ca2bec7bcab4a8145f30b2f51e39f4d90bc22b0

SHA256
ebaa8ae56cbc81282205a082baf2f96f4a584289e641703e7b8b1cd434f68679

SHA512
0c8e1cf2de4457632e2e5ce72f5e7f253ac183c33cbee52c43140367927b691ce3c59df9ea94684954340c692aca12668635b2dd625c95fe448e76d817aa8a6e

Download Submit
memory/452-19-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/452-17-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/4820-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4820-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4820-2-0x0000000002170000-0x0000000002176000-memory.dmp

Filesize
24KB

Download