98de44acecbe7e47fae6a9e9b43e72f68a74339ae028bf355c3b13296dd78e0c

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 04:35

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General

Target

2024-05-30_f6a4debd3bdc2aae9eb04b7c719f7f78_cryptolocker.exe
Size

60KB
MD5

f6a4debd3bdc2aae9eb04b7c719f7f78
SHA1

25f30ed59cc123ff5c074c19c81060422fea8caf
SHA256

98de44acecbe7e47fae6a9e9b43e72f68a74339ae028bf355c3b13296dd78e0c
SHA512

43eb43e4c0b209338b2eb037d7718c4cd2fe050d50645423e163506fee59d240315f997cbb11b307aa0e2181221869ce5c947980bc19240d4f3774d6f9f1c9cb
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pl:H6QFElP6n+gou9cvMOtEvwDpjCpVX7

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3624-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023278-13.dat	CryptoLocker_rule2
behavioral2/memory/3108-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3624-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3108-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3624-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023278-13.dat	CryptoLocker_set1
behavioral2/memory/3108-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3624-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3108-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3624-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0006000000023278-13.dat	UPX
behavioral2/memory/3108-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3624-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3108-27-0x0000000000500000-0x0000000000510000-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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-30_f6a4debd3bdc2aae9eb04b7c719f7f78_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3108	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3624-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0006000000023278-13.dat	upx
behavioral2/memory/3108-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3624-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3108-27-0x0000000000500000-0x0000000000510000-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 3624 wrote to memory of 3108	3624	2024-05-30_f6a4debd3bdc2aae9eb04b7c719f7f78_cryptolocker.exe	83
PID 3624 wrote to memory of 3108	3624	2024-05-30_f6a4debd3bdc2aae9eb04b7c719f7f78_cryptolocker.exe	83
PID 3624 wrote to memory of 3108	3624	2024-05-30_f6a4debd3bdc2aae9eb04b7c719f7f78_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-30_f6a4debd3bdc2aae9eb04b7c719f7f78_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_f6a4debd3bdc2aae9eb04b7c719f7f78_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3624
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3108

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

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Downloads

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

Filesize
60KB

MD5
6d345ce8a4ba540b3a2019bfde680e87

SHA1
90ae5eba6953f22a34973718a484ec3082e85740

SHA256
979a5fe0de73a21eb32adbd67654d4587ce5e116d3886644c6d08093a54cc564

SHA512
dab79c778cb4070ceb4212766ebdc65cf63d30ffddf572bb7529fc9002dcd826f75138525abd132f71592be33461a1c4f5a98245e70d2bb0b963cd8e5128d4d5

Download Submit
memory/3108-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3108-20-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3108-26-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/3108-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3624-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3624-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3624-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3624-9-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3624-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download