5b475dc8c135e8620ed132a6a90cfd1b870deb60617383569dba08eeedbc4f25

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
16-05-2024 07:03

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General

Target

2024-05-16_91b2087185936f58c457f18b2f1e2217_cryptolocker.exe
Size

41KB
MD5

91b2087185936f58c457f18b2f1e2217
SHA1

b37431fbf4bc894aba6b1499e65acf954fd2fede
SHA256

5b475dc8c135e8620ed132a6a90cfd1b870deb60617383569dba08eeedbc4f25
SHA512

28ae40ac92873ac3399c8a6db7a77e57d1f63a1f737ce09c1d92c73083360b85e624f557ea9aee1d62b6761d01e6ac94c33bb5125c828044be9d09a024029f5a
SSDEEP

768:bAvJCYOOvbRPDEgXrNekd7l94i3pimGZ3E:bAvJCF+RQgJeab4sTsU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002341c-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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	2024-05-16_91b2087185936f58c457f18b2f1e2217_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	demka.exe

Executes dropped EXE 1 IoCs

pid	Process
1276	demka.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 2844 wrote to memory of 1276	2844	2024-05-16_91b2087185936f58c457f18b2f1e2217_cryptolocker.exe	83
PID 2844 wrote to memory of 1276	2844	2024-05-16_91b2087185936f58c457f18b2f1e2217_cryptolocker.exe	83
PID 2844 wrote to memory of 1276	2844	2024-05-16_91b2087185936f58c457f18b2f1e2217_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-16_91b2087185936f58c457f18b2f1e2217_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_91b2087185936f58c457f18b2f1e2217_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Users\Admin\AppData\Local\Temp\demka.exe
  "C:\Users\Admin\AppData\Local\Temp\demka.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1276

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\demka.exe

Filesize
41KB

MD5
0f7316619146b69f4ae4e611ce0c9a63

SHA1
91f7ad47cb35ed7efd8607fe7c016d25bbbbdafd

SHA256
fdc521d830253d9c327a09b1eabe87f8db0ac15838a486e7b161dd6cb4618d2b

SHA512
1f90d8d85bd9565e89346802fa5cc05d2ac50303e4ee4d62d6d9cc95b6ea27c0b01588d8e39d03dd0b1d594ffd17c171a8eb94aea5b2c1e37f492231b25d7d5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\medkem.exe

Filesize
186B

MD5
72c6c00c21a3904b07b91afe3cb2e586

SHA1
6e8b5efd921ca0584de340e44140a35177372453

SHA256
6d8249e87230c244a90a92da427ba9d728d8f74e55db94d3dc71656d2f742bde

SHA512
f3934326c6dc789ca640ced3e51efb2e7eb05f8da9d685810a274bc45a5f1b6cf7882a934f2a01fb024d6ffd94f1635755f74d856655a0e2739ef3705916d348

Download Submit
memory/1276-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2844-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2844-8-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2844-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download