73ec10bf7e4226d4b0a23bdbd968ac2324565542c25ab8e7a73b6af33905da73

Analysis

max time kernel
150s
max time network
150s
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 06:25

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General

Target

2024-06-11_3a7c970ac1725f461f7d5a3df94fa449_cryptolocker.exe
Size

52KB
MD5

3a7c970ac1725f461f7d5a3df94fa449
SHA1

e16e5a7a48532a0e6cda68ebf304c257c172af9c
SHA256

73ec10bf7e4226d4b0a23bdbd968ac2324565542c25ab8e7a73b6af33905da73
SHA512

4ddf4e82c80fbffac1572cd006e0ea368a79cd047d15978bea8019122959f633cf588d27e335f7131a05b3e303e9061461fa58374c69cf0858dab9b7c627c808
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRY+iyyh:6j+1NMOtEvwDpjr8hhXy+iyyh

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1768-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a00000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/4444-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1768-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4444-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1768-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a00000002328e-13.dat	CryptoLocker_set1
behavioral2/memory/4444-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1768-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4444-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/1768-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000a00000002328e-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4444-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1768-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4444-27-0x0000000000500000-0x000000000050F000-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_3a7c970ac1725f461f7d5a3df94fa449_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4444	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 1768 wrote to memory of 4444	1768	2024-06-11_3a7c970ac1725f461f7d5a3df94fa449_cryptolocker.exe	82
PID 1768 wrote to memory of 4444	1768	2024-06-11_3a7c970ac1725f461f7d5a3df94fa449_cryptolocker.exe	82
PID 1768 wrote to memory of 4444	1768	2024-06-11_3a7c970ac1725f461f7d5a3df94fa449_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-11_3a7c970ac1725f461f7d5a3df94fa449_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_3a7c970ac1725f461f7d5a3df94fa449_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4444

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
52KB

MD5
7c4c4ab2321e6487b675bedc770a8915

SHA1
d4d6383dd14b528bbd836edc88b2e25ed0bad359

SHA256
25a6c51f62f1c4ae552e5fc139745aa0caf711b16ca69c4dd49a15525ac50908

SHA512
4969d023bd5c0ba1f07909e70714cda5f3643874b2e6a9f86fbd11a5763fbadafe239e9a70f20b808e938aa5913f0a5016b603f3102216aae4bbdf8c13e177ff

Download Submit
memory/1768-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1768-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1768-3-0x0000000000820000-0x0000000000826000-memory.dmp

Filesize
24KB

Download
memory/1768-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1768-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4444-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4444-21-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4444-20-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4444-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download