4331ea05b047ac180f979bb71a9bcc26c8742978fd4a17e7fd0fe66fafc05c42

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30-04-2024 05:36

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General

Target

2024-04-30_c4faa8b2083798be3f08151f27e8da9e_cryptolocker.exe
Size

67KB
MD5

c4faa8b2083798be3f08151f27e8da9e
SHA1

9c2ee4b89cab68ffafcb417b9a6448efd5250c9a
SHA256

4331ea05b047ac180f979bb71a9bcc26c8742978fd4a17e7fd0fe66fafc05c42
SHA512

4197b7eb6041b3908c8fa40f2942bbeae4dad7052d2151f5158a813ebf64611df464cbab07226c9f9e044a7cc2f2162de55c58c2dbbe307c731eb27595df6290
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4wYPsED3VK2+ZtyOjgO4r9vFAg2rqk63Yg7:vj+jsMQMOtEvwDpj5HwYYTjipvF2hli

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023b8e-11.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023b8e-11.dat	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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-04-30_c4faa8b2083798be3f08151f27e8da9e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5080	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 3828 wrote to memory of 5080	3828	2024-04-30_c4faa8b2083798be3f08151f27e8da9e_cryptolocker.exe	85
PID 3828 wrote to memory of 5080	3828	2024-04-30_c4faa8b2083798be3f08151f27e8da9e_cryptolocker.exe	85
PID 3828 wrote to memory of 5080	3828	2024-04-30_c4faa8b2083798be3f08151f27e8da9e_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-30_c4faa8b2083798be3f08151f27e8da9e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_c4faa8b2083798be3f08151f27e8da9e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3828
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:5080

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
68KB

MD5
2bed230e0a11c558966420a2613b77d9

SHA1
26546b2703a253a14782478849f170ff870a37c9

SHA256
11fe75b151b0348d779f703fd98f92c552f774dd70e91e89245be4c86aaac734

SHA512
807dc7138d6c12968217a614b3c9fb155aaa03002eca14e61e6d6684838624276551ef0f5a1e100511aa849f3c73a05886b1228d6d7012a85e307c06540a2a99

Download Submit
memory/3828-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3828-1-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3828-7-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/5080-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5080-18-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download