ebace89d2f818de7df93bdf2961c654be44bc708509c36f41f2d8b3204fd6fdc

Analysis

max time kernel
148s
max time network
162s
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, 23:04

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General

Target

2024-05-30_7161875766663ba0b78a331841c0ce8a_cryptolocker.exe
Size

64KB
MD5

7161875766663ba0b78a331841c0ce8a
SHA1

701071de185fd977938b909e35bef2e30aca0d6e
SHA256

ebace89d2f818de7df93bdf2961c654be44bc708509c36f41f2d8b3204fd6fdc
SHA512

e6b989fdcc73df6a964680fa044583974cf5e585e7e95f547011defa66dc8ed32dfe0ed066484f41b33823a6950ec126904f48ea02376654459a145e7279f73e
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsiU:BbdDmjr+OtEvwDpjM8V

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/736-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000002328f-13.dat	CryptoLocker_rule2
behavioral2/memory/736-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/216-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/736-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/216-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/736-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000600000002328f-13.dat	UPX
behavioral2/memory/736-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/216-27-0x0000000000500000-0x0000000000510000-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_7161875766663ba0b78a331841c0ce8a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
216	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 736 wrote to memory of 216	736	2024-05-30_7161875766663ba0b78a331841c0ce8a_cryptolocker.exe	84
PID 736 wrote to memory of 216	736	2024-05-30_7161875766663ba0b78a331841c0ce8a_cryptolocker.exe	84
PID 736 wrote to memory of 216	736	2024-05-30_7161875766663ba0b78a331841c0ce8a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-30_7161875766663ba0b78a331841c0ce8a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_7161875766663ba0b78a331841c0ce8a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:736
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:216

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
65KB

MD5
ad7759ba2f66db8dd95d621ae25fd16b

SHA1
cd82687e0ce38145e76b175da71a0a9d9b087e86

SHA256
0790d498483b7c133538d235e94129f5e9b01b74ef7b23fa0621716b06f5ac40

SHA512
5314e92c0c0d2c797280863403b88acbc46e31e4d9e189c755005c4a8de6ec5f96914baf98fcbf910a1a77a2660d72ec4dedd01b3e1c0d63e94c2cd3eba137dd

Download Submit
memory/216-26-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/216-20-0x0000000001F80000-0x0000000001F86000-memory.dmp

Filesize
24KB

Download
memory/216-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/736-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/736-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/736-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/736-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/736-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download