b4fa08046ab8cb7f18cabf814c0185c89356b3dcac50fc2ff144a57d7b98f07e

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 23:33

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General

Target

2024-06-11_e20796e04f4dfa98899662d9acf3574f_cryptolocker.exe
Size

53KB
MD5

e20796e04f4dfa98899662d9acf3574f
SHA1

6d018c09782d3deda74dcd36826d7cc5ef6f4182
SHA256

b4fa08046ab8cb7f18cabf814c0185c89356b3dcac50fc2ff144a57d7b98f07e
SHA512

cb655179521ed374c966d8afc0063403b761c273b33dc4246c11a87c3c03c91d4ff12224a0741b31cf87ab53f01e4b9dc8a0007ff08ca876d360aeebf8db87a4
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRY+iyyD/dMlt:6j+1NMOtEvwDpjr8hhXy+iyyLqt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/4852-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4748-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4748-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_set1
behavioral2/memory/4852-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4748-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4748-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000002328e-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4852-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4748-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4748-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-11_e20796e04f4dfa98899662d9acf3574f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4748	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 4852 wrote to memory of 4748	4852	2024-06-11_e20796e04f4dfa98899662d9acf3574f_cryptolocker.exe	82
PID 4852 wrote to memory of 4748	4852	2024-06-11_e20796e04f4dfa98899662d9acf3574f_cryptolocker.exe	82
PID 4852 wrote to memory of 4748	4852	2024-06-11_e20796e04f4dfa98899662d9acf3574f_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-11_e20796e04f4dfa98899662d9acf3574f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_e20796e04f4dfa98899662d9acf3574f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4852
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4748

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
53KB

MD5
a81fa263620cf12f8dba572ae24fe220

SHA1
813acbf0cc24a5e2331ec3fb416f47a34082a103

SHA256
62a3fb98a4b0e872d8c1c850dbe5751fc1e4dd302d0b6a4a1aab9733b6953155

SHA512
bcf810f04d648e867a63245afdafbce35f48c38c70379a340d0c727e076fe54d59f2c399ab9c572d354699b833ca4e8a2df693c12694d5059d98d56762461508

Download Submit
memory/4748-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4748-20-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/4748-26-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/4748-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4852-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4852-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/4852-2-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4852-9-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/4852-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download