376317edfed56db388d025c457cf33cc78c0cbe8c58424452811e67c7d00987e

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2024, 01:04

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General

Target

2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe
Size

48KB
MD5

e51c8b7afa63779be5b9ae1f05fe10c7
SHA1

2c56b72618c731c67793109bb577f168a29694ab
SHA256

376317edfed56db388d025c457cf33cc78c0cbe8c58424452811e67c7d00987e
SHA512

4c9c6565bea03e88d7da64c36b4b5b8f73169daf5fb984f2dbb1226d3e3e3d4b37f260a3b95eb281f06f64427adb1e8a4562f1f93fc733f5027023f01537a05b
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakNfA:V6a+pOtEvwDpjH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002323e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002323e-12.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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2132	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 3976 wrote to memory of 2132	3976	2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe	88
PID 3976 wrote to memory of 2132	3976	2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe	88
PID 3976 wrote to memory of 2132	3976	2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_e51c8b7afa63779be5b9ae1f05fe10c7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3976
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2132

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
48KB

MD5
1ae9837f4b4cf003617b83a70b55905f

SHA1
b047fcb2f54ce5170c8339a19aabc4bfcdc17a59

SHA256
c0c403413af2028877c4e5392265319b1e7011b59fd10daac028c058b160ed39

SHA512
6c5826d41f25b89e6a727717aac53e59832a97054b642a1fa38459dcdfd42d8ed5f4310edece2307440b2075548648e5a1b4464471ba07ccc0a3b9d4d0f469f8

Download Submit
memory/2132-17-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/2132-23-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3976-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3976-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3976-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download