7c0c1711fb72096ea5bf2bf4e1ba7cf406149fba5a011d5f4ab6573b7cf5d60c

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 18:27

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General

Target

2024-04-20_15380fc451748e0b75e9fa778dbf0e66_cryptolocker.exe
Size

88KB
MD5

15380fc451748e0b75e9fa778dbf0e66
SHA1

3d7fac8da608577e1308f114e56ecf350ee562e1
SHA256

7c0c1711fb72096ea5bf2bf4e1ba7cf406149fba5a011d5f4ab6573b7cf5d60c
SHA512

8a0bde3ee726796e45ec834c46032f81745ed8fe250d135bbacab9198495836406bfd808af2bfd33eb718764d05584b34b3625ef9f0c12c836d552af0d9aae67
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAAE:n6a+1SEOtEvwDpjYYvQd2PT

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2772-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_rule2
behavioral2/memory/2772-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3260-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3260-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2772-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_set1
behavioral2/memory/2772-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3260-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3260-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2772-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x001c00000001e97e-13.dat	UPX
behavioral2/memory/2772-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3260-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3260-27-0x0000000000500000-0x0000000000510000-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-20_15380fc451748e0b75e9fa778dbf0e66_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3260	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2772-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x001c00000001e97e-13.dat	upx
behavioral2/memory/2772-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3260-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3260-27-0x0000000000500000-0x0000000000510000-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 2772 wrote to memory of 3260	2772	2024-04-20_15380fc451748e0b75e9fa778dbf0e66_cryptolocker.exe	89
PID 2772 wrote to memory of 3260	2772	2024-04-20_15380fc451748e0b75e9fa778dbf0e66_cryptolocker.exe	89
PID 2772 wrote to memory of 3260	2772	2024-04-20_15380fc451748e0b75e9fa778dbf0e66_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-20_15380fc451748e0b75e9fa778dbf0e66_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_15380fc451748e0b75e9fa778dbf0e66_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3260

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
89KB

MD5
7119496aa4fd3c72b7ab0a2223ec5f3c

SHA1
f0daf9e88ecc8d9161949c99ac9f8c2ceb7f9ab2

SHA256
60739bc700b9e68912c225fc522f0e081296b39c66260f9cfa7fee463dd5dcc9

SHA512
1bc88ee347c52f37c09244ec195703f647013a7cba456968cef03d192fd882b45ec6d49363c04592e63fdc957674ccf6bd2cfc6179e51f66bdae8ed309201d49

Download Submit
memory/2772-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2772-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2772-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2772-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2772-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3260-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3260-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/3260-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3260-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download