7bde1d84bbbd30f095192dba263a0381d4ffd61273769a9951960469a295efb1

Analysis

max time kernel
147s
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
01/06/2024, 19:25

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General

Target

2024-06-01_8e230720d39b7725708ea4a1311f28b6_cryptolocker.exe
Size

40KB
MD5

8e230720d39b7725708ea4a1311f28b6
SHA1

5c3dcac4077d6c60523ade830bc4901675e1002a
SHA256

7bde1d84bbbd30f095192dba263a0381d4ffd61273769a9951960469a295efb1
SHA512

f323b61607fe18fe4ac97b1d7fb6c32dc9cddae75c3793cc7e4d2a021e6fdf4a95312073e5b03463a4cbc2f9656e269e72c620c6fde2e0be28c53b465ebc3b87
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY9hg:qDdFJy3QMOtEvwDpjjWMl7TJ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002342a-13.dat	CryptoLocker_rule2
behavioral2/memory/3592-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2180-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3592-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002342a-13.dat	CryptoLocker_set1
behavioral2/memory/3592-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2180-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3592-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002342a-13.dat	UPX
behavioral2/memory/3592-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2180-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3592-27-0x0000000000500000-0x0000000000510000-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-06-01_8e230720d39b7725708ea4a1311f28b6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3592	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000002342a-13.dat	upx
behavioral2/memory/3592-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2180-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3592-27-0x0000000000500000-0x0000000000510000-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 2180 wrote to memory of 3592	2180	2024-06-01_8e230720d39b7725708ea4a1311f28b6_cryptolocker.exe	82
PID 2180 wrote to memory of 3592	2180	2024-06-01_8e230720d39b7725708ea4a1311f28b6_cryptolocker.exe	82
PID 2180 wrote to memory of 3592	2180	2024-06-01_8e230720d39b7725708ea4a1311f28b6_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-01_8e230720d39b7725708ea4a1311f28b6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_8e230720d39b7725708ea4a1311f28b6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3592

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
40KB

MD5
ccd6997ea83d6a7472c7170758c23bac

SHA1
3bdf62b03be3ce16fd0a5df88afa2aed0d482201

SHA256
fb7819ab379093014f2f8f9483318a61373c251694ec1a75797b9f9e17af683e

SHA512
1c3978052a602cd0253d81f3670e5d6c47edda99b22480ebd7f0747dc647f2981b1b9b056fe7c50fca8208ff600e79e9f7971470058363d4ddccc7222483694c

Download Submit
memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2180-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2180-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2180-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2180-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3592-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3592-20-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/3592-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3592-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download