a0e113279489191f2264fd18cf2713bdf6b469c1d9466853cbcf350f3f5f9cc8

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/05/2024, 21:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-24_cb623c774f2d31308810a9f06469b77f_cryptolocker.exe
Size

90KB
MD5

cb623c774f2d31308810a9f06469b77f
SHA1

303478e3b97b01970fd9f920e52f3a4e48a0d2f1
SHA256

a0e113279489191f2264fd18cf2713bdf6b469c1d9466853cbcf350f3f5f9cc8
SHA512

ccac218253505d6acda0dc30d34e1e6f28dd9784e3c6636dcf79b33e95f3adda70a805d3062546d75db6c69627669147f96eb429fb77ad0e2b1fa3aeb0ae8d82
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAyj:n6a+1SEOtEvwDpjYYvQd2PW

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1464-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012671-11.dat	CryptoLocker_rule2
behavioral1/memory/2340-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1464-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2340-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1464-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012671-11.dat	CryptoLocker_set1
behavioral1/memory/2340-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1464-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2340-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1464-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012671-11.dat	UPX
behavioral1/memory/2340-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1464-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2340-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2340	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1464	2024-05-24_cb623c774f2d31308810a9f06469b77f_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1464-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012671-11.dat	upx
behavioral1/memory/2340-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1464-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2340-26-0x0000000000500000-0x0000000000510000-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 4 IoCs

description	pid	Process	procid_target
PID 1464 wrote to memory of 2340	1464	2024-05-24_cb623c774f2d31308810a9f06469b77f_cryptolocker.exe	28
PID 1464 wrote to memory of 2340	1464	2024-05-24_cb623c774f2d31308810a9f06469b77f_cryptolocker.exe	28
PID 1464 wrote to memory of 2340	1464	2024-05-24_cb623c774f2d31308810a9f06469b77f_cryptolocker.exe	28
PID 1464 wrote to memory of 2340	1464	2024-05-24_cb623c774f2d31308810a9f06469b77f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-24_cb623c774f2d31308810a9f06469b77f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_cb623c774f2d31308810a9f06469b77f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1464
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
90KB

MD5
0515a20e720ef9122f812ded222fc92c

SHA1
dd721c5425e9076da9fac0c6bc2ab6db0915f09a

SHA256
8f389dd14d634e023144ee9307b7ac5a10c0c286d7d9f0a04d28f016ce40ff1b

SHA512
723aeacbf5c500a5d68a2dc231ca112ec0b4d6896d2fa68327acfc235f3718217653280c1b8aa56a9ef2ecdfca8fdb189673188e4de843f688d2dd60ce096c89

Download Submit
memory/1464-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1464-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1464-9-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1464-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1464-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2340-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2340-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2340-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2340-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download