9637dafc990f74d00d3bcfbb78cac076a8bf6d557ba6023c0ae4653f9c752730

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 19:37

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General

Target

2024-06-11_84e05df2e2eeb02f26bb9b5b71e8ea57_cryptolocker.exe
Size

45KB
MD5

84e05df2e2eeb02f26bb9b5b71e8ea57
SHA1

499b4b4d37511ff51a19d59ccfcc42cd3ea47b87
SHA256

9637dafc990f74d00d3bcfbb78cac076a8bf6d557ba6023c0ae4653f9c752730
SHA512

046a9196ea306a78fec48de02b7f99d09f1b2c8a004a123eb4335591a28bf90f884ef6e77d85b91e7dcef6378e7e02db5830788ae5d2536289009a684c04d410
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUk3d:bm74zYcgT/EkM0ryfjd3d

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3940-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000233f9-13.dat	CryptoLocker_rule2
behavioral2/memory/3940-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/812-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/812-26-0x0000000008000000-0x000000000800D000-memory.dmp	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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-06-11_84e05df2e2eeb02f26bb9b5b71e8ea57_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
812	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 3940 wrote to memory of 812	3940	2024-06-11_84e05df2e2eeb02f26bb9b5b71e8ea57_cryptolocker.exe	81
PID 3940 wrote to memory of 812	3940	2024-06-11_84e05df2e2eeb02f26bb9b5b71e8ea57_cryptolocker.exe	81
PID 3940 wrote to memory of 812	3940	2024-06-11_84e05df2e2eeb02f26bb9b5b71e8ea57_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-11_84e05df2e2eeb02f26bb9b5b71e8ea57_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_84e05df2e2eeb02f26bb9b5b71e8ea57_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3940
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:812

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
45KB

MD5
41852692c911a135413929d3fe1b08ad

SHA1
439410a3a992272a127bac25ad2574b8abbb1d4a

SHA256
5774a583b37ab23fde9968694ad1d3fc8d6fd5921eacadbb7b7c0fc86b2aeb62

SHA512
31627db1bd9f83498949b38f58d30353546f8f85dadca7586a89c979976868a32485ea5967763d352e911f9542d6f383165e6f8a8977b06f37cd49561b778308

Download Submit
memory/812-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/812-20-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/812-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3940-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3940-1-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3940-2-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/3940-9-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3940-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download