e0359200bbd9beb7a6d4a28d16a0bfd53c6cdab5963b5eddff44e89cc37ad63d

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 19:27

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General

Target

2024-05-09_73f0367beb66d47825bb3cb4624de96a_cryptolocker.exe
Size

39KB
MD5

73f0367beb66d47825bb3cb4624de96a
SHA1

c903936bcf74482df012d347afffbc119da60de0
SHA256

e0359200bbd9beb7a6d4a28d16a0bfd53c6cdab5963b5eddff44e89cc37ad63d
SHA512

45c3853b475be27ed411f8c930b43bc44c140f3040b6867e38161f6abfba11b366ce6e692095bd7491f53094cdc9901200cc784772b4846036c345e9386aec61
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYau:qDdFJy3QMOtEvwDpjjWMl7Tdu

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4696-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002341c-13.dat	CryptoLocker_rule2
behavioral2/memory/944-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4696-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/944-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4696-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002341c-13.dat	CryptoLocker_set1
behavioral2/memory/944-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4696-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/944-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/4696-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002341c-13.dat	UPX
behavioral2/memory/944-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4696-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/944-28-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-09_73f0367beb66d47825bb3cb4624de96a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
944	asih.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4696-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000002341c-13.dat	upx
behavioral2/memory/944-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4696-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/944-28-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 4696 wrote to memory of 944	4696	2024-05-09_73f0367beb66d47825bb3cb4624de96a_cryptolocker.exe	83
PID 4696 wrote to memory of 944	4696	2024-05-09_73f0367beb66d47825bb3cb4624de96a_cryptolocker.exe	83
PID 4696 wrote to memory of 944	4696	2024-05-09_73f0367beb66d47825bb3cb4624de96a_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-09_73f0367beb66d47825bb3cb4624de96a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_73f0367beb66d47825bb3cb4624de96a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4696
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:944

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
39KB

MD5
b3463ff6f76b0a4544b1a5a9a18cbcc6

SHA1
6c5ed8af7adf163e94d059a7b8181813f68ee359

SHA256
8a8f0e4a1faf13e35af40697b72c1d353fc0377f3e6106c17210716d6c352a7a

SHA512
abd55e7040e769633effe75b61d74e33c6cb536f5712375fe0f8e8cc4f752ded5b8eb0d2caa325f25437c4353c5b029c0097515d2ee27ffbd09acaf4aeba13f9

Download Submit
memory/944-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/944-20-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/944-27-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/944-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4696-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4696-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4696-2-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4696-9-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4696-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download