9e636850d823dbd7116d00ec6c0e2fea07c57fcc3770bcee35313bd2106e858b

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
13/05/2024, 12:37

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General

Target

2024-05-13_9b3acea8cf5b4c16fca77212f94d3193_cryptolocker.exe
Size

90KB
MD5

9b3acea8cf5b4c16fca77212f94d3193
SHA1

afc3c57870ddbf57e3c84cc48838625cef2e8b47
SHA256

9e636850d823dbd7116d00ec6c0e2fea07c57fcc3770bcee35313bd2106e858b
SHA512

feba2214253954b3dc9c044e63c41be3a01903de535754ecc3d40c354b0f94ffa8fafffba19bbc5d680a263a4bb57d0397ebe0cb774be1d08685d06677ff245a
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgIiJ:AnBdOOtEvwDpj6z3

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/5116-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002342a-13.dat	CryptoLocker_rule2
behavioral2/memory/5116-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2676-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/5116-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002342a-13.dat	CryptoLocker_set1
behavioral2/memory/5116-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2676-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/5116-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x000800000002342a-13.dat	UPX
behavioral2/memory/5116-19-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/2676-27-0x0000000000500000-0x000000000050F000-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-13_9b3acea8cf5b4c16fca77212f94d3193_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2676	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5116-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000800000002342a-13.dat	upx
behavioral2/memory/5116-19-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2676-27-0x0000000000500000-0x000000000050F000-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 5116 wrote to memory of 2676	5116	2024-05-13_9b3acea8cf5b4c16fca77212f94d3193_cryptolocker.exe	83
PID 5116 wrote to memory of 2676	5116	2024-05-13_9b3acea8cf5b4c16fca77212f94d3193_cryptolocker.exe	83
PID 5116 wrote to memory of 2676	5116	2024-05-13_9b3acea8cf5b4c16fca77212f94d3193_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-13_9b3acea8cf5b4c16fca77212f94d3193_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_9b3acea8cf5b4c16fca77212f94d3193_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5116
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2676

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
90KB

MD5
e9ccad62988bfd79a5f1abf5d9e5aab4

SHA1
606e7cbefdb956b1626964d566b8d4bbcf652f29

SHA256
5a687b992b493b8ae94ee753fc90bcfb81729a8d5ab446833ab30600a4eaea41

SHA512
afd39ecd015b047bab9db886466e6d03451e6d6117c248ba2b5ea7741eeac617e35079d7690b716fb1a176b6e864e788161cfdb98b4eb184a0668f32e16dc0b7

Download Submit
memory/2676-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2676-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2676-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5116-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5116-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/5116-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/5116-9-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/5116-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download