8fe1a5da028f033b33a4857fec455eed4a5b931c1a457bc2731e4cd9831d07eb

Analysis

max time kernel
147s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 21:39

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General

Target

2024-03-27_e4a48dec69d5fda079d9dfec608f2157_cryptolocker.exe
Size

44KB
MD5

e4a48dec69d5fda079d9dfec608f2157
SHA1

8ea20af19e3cd0b3a88220ead82d51afd824bedd
SHA256

8fe1a5da028f033b33a4857fec455eed4a5b931c1a457bc2731e4cd9831d07eb
SHA512

52624803dc5765d5f3a6a17f522d0eca16f95a96edc5e361dda1c9a5202cd1eea7c13e5784298ec8870ff6967fb1d2998a51ea9ba9f74ce059948735241d8b20
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPx9Unu/Jz:bIDOw9a0Dwo3P1ojvUSD4PIn4t

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023151-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-27_e4a48dec69d5fda079d9dfec608f2157_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2472	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 2636 wrote to memory of 2472	2636	2024-03-27_e4a48dec69d5fda079d9dfec608f2157_cryptolocker.exe	84
PID 2636 wrote to memory of 2472	2636	2024-03-27_e4a48dec69d5fda079d9dfec608f2157_cryptolocker.exe	84
PID 2636 wrote to memory of 2472	2636	2024-03-27_e4a48dec69d5fda079d9dfec608f2157_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-03-27_e4a48dec69d5fda079d9dfec608f2157_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_e4a48dec69d5fda079d9dfec608f2157_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2472

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
44KB

MD5
20fbb13d422368dc9fd210a812c60321

SHA1
5142b5cc3fa54253426718b04ccafbdbf5a5c10f

SHA256
fb81033bc52284aed81fdbddc96184b960a0582898ee1099700253518c035978

SHA512
92fe07f73142aa2a317a140a0a6cc91f55e59c157b76e8824556de95ff12d1cfd1978a0077033a3834ba261d5030e9d492254beca6e175a816aed6e0ec0718f9

Download Submit
memory/2472-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2472-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2636-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/2636-2-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/2636-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download