ec2b2cfd2b85ae12ddbf0f0257fee0dea36fefd1809273b2c671e6530c1a36c7

Analysis

max time kernel
169s
max time network
178s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-01-2024 06:07

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General

Target

2024-01-11_ec624a77a501423d733906a39800a50e_cryptolocker.exe
Size

37KB
MD5

ec624a77a501423d733906a39800a50e
SHA1

20b199a9635f4cb4fcf65fef5f3368a51c317120
SHA256

ec2b2cfd2b85ae12ddbf0f0257fee0dea36fefd1809273b2c671e6530c1a36c7
SHA512

8314b38bac47de6181c2e20d3a42d6fb277ee63517f3bf3299ea9bf61dab85250f831561a34b9ad83f31623c507f4bdbc8b4a95064b7ac3a490e3e0e728c4212
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlc5:b/yC4GyNM01GuQMNXw2PSjHPbSuYlc5

Score

7^/10

Malware Config

Signatures

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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-01-11_ec624a77a501423d733906a39800a50e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4624	retln.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 3152 wrote to memory of 4624	3152	2024-01-11_ec624a77a501423d733906a39800a50e_cryptolocker.exe	91
PID 3152 wrote to memory of 4624	3152	2024-01-11_ec624a77a501423d733906a39800a50e_cryptolocker.exe	91
PID 3152 wrote to memory of 4624	3152	2024-01-11_ec624a77a501423d733906a39800a50e_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-01-11_ec624a77a501423d733906a39800a50e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-11_ec624a77a501423d733906a39800a50e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4624

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\retln.exe

Filesize
37KB

MD5
2369cb947b3614aa5a843e22a6a2acaf

SHA1
e704d8fde03a6a6d090d56fb0c83f39f09ade7bc

SHA256
07cfd6e46151ccc894f9ce08ea27f816e977f68aa58f309ea1807074882a1a2b

SHA512
607f61c137f907f1401d6b10c990df177f1441b5204bcf23f137efaaa25cb54f398f2432b7d92784c03d87ea949df0c8adb83307280c3955c19949e1e9d59d70

Download Submit
memory/3152-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/3152-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/3152-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4624-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download