848ee8fb930ec2d20d4eb2cb9108623ba53e5daaf7d3fadf1a8b8ec4d173d2a0

Analysis

max time kernel
150s
max time network
151s
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, 09:28

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General

Target

2024-03-06_4a967c8e2e2e4d7d755ebec57de3ca70_cryptolocker.exe
Size

51KB
MD5

4a967c8e2e2e4d7d755ebec57de3ca70
SHA1

1636c145b2fe2bc5e26a78f06a4c8202227014b9
SHA256

848ee8fb930ec2d20d4eb2cb9108623ba53e5daaf7d3fadf1a8b8ec4d173d2a0
SHA512

c6e1e7367ba7ae93a2ca94f4bd3e4c4734b8b1cb8d312ec62620db53482fe38f872162217cf1fa2013349815fa1d92582408ceac72f384f5bce4d44b4da09422
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPxyV4tFVgQ4c:bIDOw9a0Dwo3P1ojvUSD4PRtFVgPc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023211-12.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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-06_4a967c8e2e2e4d7d755ebec57de3ca70_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1736	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 1492 wrote to memory of 1736	1492	2024-03-06_4a967c8e2e2e4d7d755ebec57de3ca70_cryptolocker.exe	89
PID 1492 wrote to memory of 1736	1492	2024-03-06_4a967c8e2e2e4d7d755ebec57de3ca70_cryptolocker.exe	89
PID 1492 wrote to memory of 1736	1492	2024-03-06_4a967c8e2e2e4d7d755ebec57de3ca70_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-06_4a967c8e2e2e4d7d755ebec57de3ca70_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_4a967c8e2e2e4d7d755ebec57de3ca70_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1736

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
51KB

MD5
574200a6a28644a86e0a1ed7e683267a

SHA1
5db50766e96fb84f953cd989a91c2b3a88f4f909

SHA256
8ceb17e8a87c6338a7986b5582d7be023e730178bee6d779dd60c80356a49921

SHA512
df3c81cef49cc6af454bea24f8b330ce1df889abac3b16e8e804d7041c240c727a426f3bd9ce3e05daea4e49ad335ed5d3ed3675d49f1a519583f7558cf34159

Download Submit
memory/1492-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1492-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1492-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1736-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1736-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download