5138a02936bda5a9baa4e460fd692c7f938ca180733d6294bad765d89cddd0a8

Analysis

max time kernel
133s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 20:34

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General

Target

2024-03-15_ba0d127109b15161895ac01353c12084_cryptolocker.exe
Size

108KB
MD5

ba0d127109b15161895ac01353c12084
SHA1

4ee6ff93e1aa2f5e8b433a6cb4e16ace1215ff67
SHA256

5138a02936bda5a9baa4e460fd692c7f938ca180733d6294bad765d89cddd0a8
SHA512

cc3aa1392ad1b91391227030f9e88a48ff983a6855db3ff35692e127f78b1a18ba15865b66fca8bdd739fd7d9c49fc5d60761a8b11c28a480aa46ce31c9a119b
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6Gkszf8G:1nK6a+qdOOtEvwDpjN

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4832-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e9a0-13.dat	CryptoLocker_rule2
behavioral2/memory/4832-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2280-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4832-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e9a0-13.dat	CryptoLocker_set1
behavioral2/memory/4832-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/2280-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4832-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/files/0x000300000001e9a0-13.dat	UPX
behavioral2/memory/4832-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/2280-26-0x0000000000500000-0x000000000050F311-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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-15_ba0d127109b15161895ac01353c12084_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2280	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4832-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x000300000001e9a0-13.dat	upx
behavioral2/memory/4832-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/2280-26-0x0000000000500000-0x000000000050F311-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 4832 wrote to memory of 2280	4832	2024-03-15_ba0d127109b15161895ac01353c12084_cryptolocker.exe	88
PID 4832 wrote to memory of 2280	4832	2024-03-15_ba0d127109b15161895ac01353c12084_cryptolocker.exe	88
PID 4832 wrote to memory of 2280	4832	2024-03-15_ba0d127109b15161895ac01353c12084_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-15_ba0d127109b15161895ac01353c12084_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_ba0d127109b15161895ac01353c12084_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2280

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
108KB

MD5
38d92834d4f8e561aa13aeba618d082f

SHA1
d68d757c624f68521144348bd4574acc8beeb117

SHA256
83735d98368c5805eb6c5e46f0b2c183fea915f4b95a92b4d68a1c383347df4e

SHA512
248d96ebb355624c10c89e17551bda44cfb7e6867e1fbcf268a238d0acc515a7dcbcf9ff629db00f28df9c1bbbfa88286096bc05bc77b8bc4c367975d215241e

Download Submit
memory/2280-21-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2280-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/2280-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4832-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4832-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4832-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4832-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4832-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download