28bc61ed8f6d854616b27b17b338bc6ee7ddfe17b97c61abc3aed0c683d6a28d

Analysis

max time kernel
151s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13-02-2024 17:38

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General

Target

2024-02-13_3db5534d3b6963e665e81f528fe05399_cryptolocker.exe
Size

33KB
MD5

3db5534d3b6963e665e81f528fe05399
SHA1

15f54fe8215f34a8c04f5aac0dfac7265fde9269
SHA256

28bc61ed8f6d854616b27b17b338bc6ee7ddfe17b97c61abc3aed0c683d6a28d
SHA512

125fc56346d26232e7aa5cabc3af262f4243f37f3d97381ff1a7d9f7e070e23829c8b6f18a692a99b3a3f708b9fa031d30dafc37766fc632436a10be56890039
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunexRlSrxV+:bA74zYcgT/Ekd0ryfjPIunYwg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002322a-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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-13_3db5534d3b6963e665e81f528fe05399_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
876	hasfj.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 3548 wrote to memory of 876	3548	2024-02-13_3db5534d3b6963e665e81f528fe05399_cryptolocker.exe	84
PID 3548 wrote to memory of 876	3548	2024-02-13_3db5534d3b6963e665e81f528fe05399_cryptolocker.exe	84
PID 3548 wrote to memory of 876	3548	2024-02-13_3db5534d3b6963e665e81f528fe05399_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-13_3db5534d3b6963e665e81f528fe05399_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_3db5534d3b6963e665e81f528fe05399_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3548
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:876

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\hasfj.exe

Filesize
34KB

MD5
931657782235feaf64ecb2d2181dab50

SHA1
b2c138128a34a3616d9da7f2f553bd8ae87c782d

SHA256
c724b68a985112a34941a69b3d45044ad685d022ad2be6cf16454e9e52d3305d

SHA512
85716ee818c75ce86a016bdf92af46c8da0b09e50f0930bc35b7ceded54d643707671b6bbef0b65c0a7dcc260b9dc930d5a6d69d103bc5289cc4ed9bff1ccb6f

Download Submit
memory/876-18-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/876-17-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3548-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3548-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3548-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download