e7a2f03a7ccced997875d4d76a12ef875c0fcd4bb6bd0cbcec5d802b4c507187

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 03:50

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General

Target

2024-02-18_b6ab4e4873f5729772d622d7b2c45a05_cryptolocker.exe
Size

51KB
MD5

b6ab4e4873f5729772d622d7b2c45a05
SHA1

4e5129e02c24ad075cea7d7f2028fa01df464075
SHA256

e7a2f03a7ccced997875d4d76a12ef875c0fcd4bb6bd0cbcec5d802b4c507187
SHA512

500b3f7db8854fb800c0608b15849a22ab1a5888317117ab30845d73105094af81f4d7ff8d329a304f8b0519889ce2561bca8601e258af58866d6e5800949e81
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRc:79mqyNhQMOtEvwDpjBxe8TpXRc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4640-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002321b-13.dat	CryptoLocker_rule2
behavioral2/memory/4640-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4640-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002321b-13.dat	CryptoLocker_set1
behavioral2/memory/4640-17-0x0000000000500000-0x000000000050F000-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-18_b6ab4e4873f5729772d622d7b2c45a05_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1696	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 4640 wrote to memory of 1696	4640	2024-02-18_b6ab4e4873f5729772d622d7b2c45a05_cryptolocker.exe	85
PID 4640 wrote to memory of 1696	4640	2024-02-18_b6ab4e4873f5729772d622d7b2c45a05_cryptolocker.exe	85
PID 4640 wrote to memory of 1696	4640	2024-02-18_b6ab4e4873f5729772d622d7b2c45a05_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-18_b6ab4e4873f5729772d622d7b2c45a05_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_b6ab4e4873f5729772d622d7b2c45a05_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4640
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1696

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
51KB

MD5
54c4d381a40b5460ac05a9cc3b70a574

SHA1
c993720ef949f79cc605325052c2ea103cc54bad

SHA256
f9b7b00ed64f00aa42eede685d44cd0351a9bcea30549f362355ebaccc0593e6

SHA512
4bd115c0941dc23e6b5a432a14f424444bb98254a4a7822de853e20afdd65589d90b555faedaddb9acb5185bbeb0c5df025191e156c9d43fac25faa1d3781a6a

Download Submit
memory/1696-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1696-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4640-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4640-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4640-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4640-3-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/4640-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download