c5fead6e01d1bcf573496897b4df39acefcbb29c0210b89bad7217850bacc0dc

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 12:31

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General

Target

2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe
Size

51KB
MD5

a53c22b4454dacefe71e4635f1753169
SHA1

de4057f6afc388cf5ecbff3a2a3c601b6437e4f0
SHA256

c5fead6e01d1bcf573496897b4df39acefcbb29c0210b89bad7217850bacc0dc
SHA512

c8d078e4f61602ef3fcb7e4fde9c67a61c880e9e0bd9c75c0fb50f44d30a3bcc9932efe84adb6d7d776f1c78a70e4d0ee2cc7dba99b27d5230d45e37e8c6302b
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Moc54:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ+4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2996-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000233fa-13.dat	CryptoLocker_rule2
behavioral2/memory/2996-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2648-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2648-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2996-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2648-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2648-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2996-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x00090000000233fa-13.dat	UPX
behavioral2/memory/2996-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2648-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2648-27-0x0000000000500000-0x0000000000510000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2648	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 2996 wrote to memory of 2648	2996	2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe	83
PID 2996 wrote to memory of 2648	2996	2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe	83
PID 2996 wrote to memory of 2648	2996	2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2648

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
f80df923336af4b21c0cb67951f7fa13

SHA1
9cc0d35ef1d0133f4caa0e0702b20342301c0c11

SHA256
21ab0876e668de8ded0960cfd702aeb5e27690b4cddf0c56a76123fe0a0c7757

SHA512
937c2a77a81ccdc32277051215365d10149e7e03afed2dd40f50b2934d0f871546f390ce4dae6629cc49acd7d91eeab01c99ff38c9938c677e745da7b0ed9610

Download Submit
memory/2648-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2648-21-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/2648-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2996-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2996-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2996-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/2996-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2996-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download