5a75ccc9563ff04c7c500995e71346ef48ca21b9681bb2181557444cb2cf8f9c

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 12:52

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General

Target

2024-04-20_92c6b4461e33f77241e8fe4ef5ed28e6_cryptolocker.exe
Size

83KB
MD5

92c6b4461e33f77241e8fe4ef5ed28e6
SHA1

ddbdb0f91e26cf2e0152bfb221b726640102c2bf
SHA256

5a75ccc9563ff04c7c500995e71346ef48ca21b9681bb2181557444cb2cf8f9c
SHA512

77d54ff5ad0393595f591d739d82bbf16635319613fd618a98c52b1d5e48c51a874c99a4cf38e469dc19aaa91f21b7424e309a8840ff3ce4197f93de653650e1
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrCs:TCjsIOtEvwDpj5HE/OUHnSMp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1800-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e97c-13.dat	CryptoLocker_rule2
behavioral2/memory/1800-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/740-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1800-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e97c-13.dat	CryptoLocker_set1
behavioral2/memory/1800-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/740-26-0x0000000000500000-0x000000000050E000-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-20_92c6b4461e33f77241e8fe4ef5ed28e6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
740	misid.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 1800 wrote to memory of 740	1800	2024-04-20_92c6b4461e33f77241e8fe4ef5ed28e6_cryptolocker.exe	85
PID 1800 wrote to memory of 740	1800	2024-04-20_92c6b4461e33f77241e8fe4ef5ed28e6_cryptolocker.exe	85
PID 1800 wrote to memory of 740	1800	2024-04-20_92c6b4461e33f77241e8fe4ef5ed28e6_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-20_92c6b4461e33f77241e8fe4ef5ed28e6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_92c6b4461e33f77241e8fe4ef5ed28e6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:740

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
83KB

MD5
4a036a3bbe404564c5003103cf006083

SHA1
60f62ea7da4c99bfebf0c158ec5f4231fed9d629

SHA256
b78548b8a5665301751cc3173e2076114b22feb4aa7aa285e3c166b5fa05d20c

SHA512
090e13471b7207de634fe5d03caa415120336e3111e1f882551190e42e6a9c36c2e470a262838d88d8ef3eb47fbbfbbac47564804c9fde51031b0fdb9b329c23

Download Submit
memory/740-20-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/740-19-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/740-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1800-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1800-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1800-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1800-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1800-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download