9cbbac9b01c257ca9cc1a51b5f12ae163140f6818da77b4945d318497e575090

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12-03-2024 14:27

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General

Target

2024-03-12_21c6b3a83ff7cadb557c4ff27b380f7f_cryptolocker.exe
Size

40KB
MD5

21c6b3a83ff7cadb557c4ff27b380f7f
SHA1

6bbb851e35c03f05095170396650edff17ace11a
SHA256

9cbbac9b01c257ca9cc1a51b5f12ae163140f6818da77b4945d318497e575090
SHA512

a7622be268c37672e124db869402647703dea493e4c8e7aaacc4fac25989ad8b724a85e85c6e6291e1ec449cb50f0d4c5634cf4aec45136adb99947835d2f086
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL/I:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4568-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001e59e-13.dat	CryptoLocker_rule2
behavioral2/memory/4568-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4568-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000001e59e-13.dat	CryptoLocker_set1
behavioral2/memory/4568-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-12_21c6b3a83ff7cadb557c4ff27b380f7f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4000	asih.exe

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 4568 wrote to memory of 4000	4568	2024-03-12_21c6b3a83ff7cadb557c4ff27b380f7f_cryptolocker.exe	89
PID 4568 wrote to memory of 4000	4568	2024-03-12_21c6b3a83ff7cadb557c4ff27b380f7f_cryptolocker.exe	89
PID 4568 wrote to memory of 4000	4568	2024-03-12_21c6b3a83ff7cadb557c4ff27b380f7f_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-12_21c6b3a83ff7cadb557c4ff27b380f7f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_21c6b3a83ff7cadb557c4ff27b380f7f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4568
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4000

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
40KB

MD5
3c7ab2d4409362bf47cf3a508c973a3a

SHA1
210646ceb09bfebaa58b2e36bd9ee8ba854dc83f

SHA256
f93d36df77e9033332287a19dbe09d48d80a958f69bb2c056d05e9bc7116fc7f

SHA512
3ae4633d0af6e9d43f522bd187a8f8d8ce8c0da2eefbf9f2d4edec5fc2c6b7846847948872579a1fbfa1125a89131d923acd599899340aa4e41ca1845647f50b

Download Submit
memory/4000-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4000-22-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4568-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4568-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4568-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4568-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4568-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download