12cecbe552814cd51ae358516efea9a12397545516559d032c4c062e5b352d8b

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 06:48

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General

Target

2024-04-20_d6e3d195185b775c8ad6640e3fb24567_cryptolocker.exe
Size

50KB
MD5

d6e3d195185b775c8ad6640e3fb24567
SHA1

7e1d562fb4878cac3eca86c917a5eed5dcd5cd00
SHA256

12cecbe552814cd51ae358516efea9a12397545516559d032c4c062e5b352d8b
SHA512

f8102131aef5a0f9ef1f72dd3d48abd48ba236ae6171d4cd59d8abe2c875eeca7e8848f084a72ab76ee63acd7498ecd228014e08a7f5493375d2d6c28f61e5bc
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTHGfO:79mqyNhQMOtEvwDpjBxe8GGfO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4200-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_rule2
behavioral2/memory/4200-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4200-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_set1
behavioral2/memory/4200-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-20_d6e3d195185b775c8ad6640e3fb24567_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3980	asih.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 4200 wrote to memory of 3980	4200	2024-04-20_d6e3d195185b775c8ad6640e3fb24567_cryptolocker.exe	91
PID 4200 wrote to memory of 3980	4200	2024-04-20_d6e3d195185b775c8ad6640e3fb24567_cryptolocker.exe	91
PID 4200 wrote to memory of 3980	4200	2024-04-20_d6e3d195185b775c8ad6640e3fb24567_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-20_d6e3d195185b775c8ad6640e3fb24567_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_d6e3d195185b775c8ad6640e3fb24567_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4200
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3980

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\asih.exe

Filesize
50KB

MD5
c259e2366d0caa1bcb01930cb908866c

SHA1
65ba0f53e894dacf2e93fb3bb6f0acf5cd31dfb3

SHA256
a3768f6952758ea58b42bd1f586e0897974f0c19168ebac5bd903a52e8947e35

SHA512
1e06f8d48c5e8fb4e33150e436eab7d38dfc6cc6533c6530c700a4649e8b1804e6680fc73a45b4cbc4c0c566effe882392838138184af5920d4a16b081fdeb1c

Download Submit
memory/3980-19-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/3980-21-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/4200-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4200-1-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4200-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4200-3-0x0000000000800000-0x0000000000806000-memory.dmp

Filesize
24KB

Download
memory/4200-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download