02a0f24d817083029c7e417400b81df678a7fa7e18b7712bab2e8835683b60aa

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 09:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-18_2fde95a90fc5007b60a16e2650b12e65_cryptolocker.exe
Size

117KB
MD5

2fde95a90fc5007b60a16e2650b12e65
SHA1

3363412851a8e1e978533f9fc4a5f015e04d8643
SHA256

02a0f24d817083029c7e417400b81df678a7fa7e18b7712bab2e8835683b60aa
SHA512

18e4256ee4abda2eada53912606f3a1cb13275cb0e8ac9f9d1ee98813071476946841d27cc574d0bb0cb55ad9f46687d3473d3f0b10c6d2abbe5873a17465c32
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01b:z6a+CdOOtEvwDpjczJ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4192-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023201-13.dat	CryptoLocker_rule2
behavioral2/memory/3524-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4192-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3524-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4192-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023201-13.dat	CryptoLocker_set1
behavioral2/memory/3524-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4192-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3524-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/4192-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0007000000023201-13.dat	UPX
behavioral2/memory/3524-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4192-20-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3524-27-0x0000000000500000-0x0000000000510000-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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-18_2fde95a90fc5007b60a16e2650b12e65_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3524	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4192-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0007000000023201-13.dat	upx
behavioral2/memory/3524-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4192-20-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3524-27-0x0000000000500000-0x0000000000510000-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 4192 wrote to memory of 3524	4192	2024-02-18_2fde95a90fc5007b60a16e2650b12e65_cryptolocker.exe	84
PID 4192 wrote to memory of 3524	4192	2024-02-18_2fde95a90fc5007b60a16e2650b12e65_cryptolocker.exe	84
PID 4192 wrote to memory of 3524	4192	2024-02-18_2fde95a90fc5007b60a16e2650b12e65_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_2fde95a90fc5007b60a16e2650b12e65_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_2fde95a90fc5007b60a16e2650b12e65_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4192
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3524

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

Loading Replay Monitor...

Downloads

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

Filesize
117KB

MD5
9f40d0037f27a37e9992d523f2dde721

SHA1
f2e8e835d6a403cad61c7b31d02adad72620598f

SHA256
e45216532311da4273193f13c9b3053a4d3843e836027cdddc07285f491dca3c

SHA512
5ffac25578eeba45aad1c617e066143e05793de803580c3fab46cdedade1314083f306ead23394a47dc15ae93891f7ed5a8463252623656910c3afe3f6a1a365

Download Submit
memory/3524-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3524-21-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3524-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3524-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4192-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4192-1-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4192-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4192-3-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/4192-20-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download