fadcca168144b46c27b149becadf60b2beee66c7c8c6d7309cc0d98c5e042f71

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 12:58

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General

Target

2024-02-23_cab80300cfa4d75aab70544913df5406_cryptolocker.exe
Size

62KB
MD5

cab80300cfa4d75aab70544913df5406
SHA1

489ac399521274d7aa1daea3cac0f058961d06ba
SHA256

fadcca168144b46c27b149becadf60b2beee66c7c8c6d7309cc0d98c5e042f71
SHA512

fa29750db4c86cf0eb7165614588db5fb9d250a6707b0e90cec4aa0bbffa74faa14a240328c2d46b9d860a74ddd7c579d46f0049f06ed72cd9a375c6184bf3c4
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mnVuT:zj+soPSMOtEvwDpj4kpmeLmncT

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4792-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000001e5ba-13.dat	CryptoLocker_rule2
behavioral2/memory/4792-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5040-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4792-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000900000001e5ba-13.dat	CryptoLocker_set1
behavioral2/memory/4792-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5040-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4792-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000900000001e5ba-13.dat	UPX
behavioral2/memory/4792-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/5040-25-0x0000000000500000-0x0000000000510000-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-1-5-21-3054445511-921769590-4013668107-1000\Control Panel\International\Geo\Nation	2024-02-23_cab80300cfa4d75aab70544913df5406_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5040	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4792-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000900000001e5ba-13.dat	upx
behavioral2/memory/4792-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/5040-25-0x0000000000500000-0x0000000000510000-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 4792 wrote to memory of 5040	4792	2024-02-23_cab80300cfa4d75aab70544913df5406_cryptolocker.exe	88
PID 4792 wrote to memory of 5040	4792	2024-02-23_cab80300cfa4d75aab70544913df5406_cryptolocker.exe	88
PID 4792 wrote to memory of 5040	4792	2024-02-23_cab80300cfa4d75aab70544913df5406_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-23_cab80300cfa4d75aab70544913df5406_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_cab80300cfa4d75aab70544913df5406_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:5040

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\misid.exe

Filesize
62KB

MD5
dbc8fb20a57afc0307b2a4ee433adc90

SHA1
7f8376d1f1f52d0c83ce064192fd86f9acbd6f12

SHA256
e24320f15f2bdae67cdd088074b2819d99498e28ff98dc0e9d29e56f0d1bdd26

SHA512
230e36c161696ecfd32b3293c506d02327fdcc4ceb568768b291ff361bf25f0a62b9d82abef06afa65981f78c435a1fb1710612533d3c486f89d125542807c8a

Download Submit
memory/4792-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4792-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4792-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4792-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4792-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5040-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download