a9b0fa55ad4dcf1528d63aea12accf96c483f410b1406564785f60e8c548d1e3

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
11/02/2024, 19:52

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General

Target

2024-02-11_a6bd9dbe291ec9b73f9bd5ce9da384e2_cryptolocker.exe
Size

48KB
MD5

a6bd9dbe291ec9b73f9bd5ce9da384e2
SHA1

4871fd7a0dbde10037467ab721ee19a61be33dd1
SHA256

a9b0fa55ad4dcf1528d63aea12accf96c483f410b1406564785f60e8c548d1e3
SHA512

e5072d40d4b11181752abef33be40afdfc13f8ccd5eeacd44bbd899565f59a1e46b9b7e3a6ee930e76332faeb74c985bf98af75958922b66d62ea721e00d7c37
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIKld5CAZ:bgGYcA/53GAA6y37Q6dI+d5j

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023214-12.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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-11_a6bd9dbe291ec9b73f9bd5ce9da384e2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1360	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 1272 wrote to memory of 1360	1272	2024-02-11_a6bd9dbe291ec9b73f9bd5ce9da384e2_cryptolocker.exe	86
PID 1272 wrote to memory of 1360	1272	2024-02-11_a6bd9dbe291ec9b73f9bd5ce9da384e2_cryptolocker.exe	86
PID 1272 wrote to memory of 1360	1272	2024-02-11_a6bd9dbe291ec9b73f9bd5ce9da384e2_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-11_a6bd9dbe291ec9b73f9bd5ce9da384e2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-11_a6bd9dbe291ec9b73f9bd5ce9da384e2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1272
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1360

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
48KB

MD5
a43742579ce5650ee15fb0d9f1901ad2

SHA1
8e87c1b9e5d06847239a1277fbd9e507ed52791d

SHA256
cb14632d4736a3270214494b47b164da5457d6e9da17abaad5db42bb0c640cca

SHA512
bbbf81fdbbed9a44aa077902cec0d247fee22f28911fb58a2cd1a652a56e4a24b157434417bc995eb37a193639206a155881aa5cefeadddebceee5c05dddae06

Download Submit
memory/1272-0-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/1272-1-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/1272-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1360-17-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download