638db3fee9f051eb950c7a72638d924fed36b3c4189ff8cdd7e92869ce9739f9

Analysis

max time kernel
147s
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
10/05/2024, 05:33

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General

Target

2024-05-10_aadf20ce2229ee42dda6b1829a396918_cryptolocker.exe
Size

50KB
MD5

aadf20ce2229ee42dda6b1829a396918
SHA1

770e5959c55a6b5d60c1104d971643006141d726
SHA256

638db3fee9f051eb950c7a72638d924fed36b3c4189ff8cdd7e92869ce9739f9
SHA512

ca85cc4014f0e8b943294e98dcb8fc9b46526f70c3bd9972b9bad97d4511a231f462a64c29abe128b741db6131144b792191e443e01844323640bb08c22faa30
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZYO:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLiO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000232a4-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000232a4-12.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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-05-10_aadf20ce2229ee42dda6b1829a396918_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4804	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 3988 wrote to memory of 4804	3988	2024-05-10_aadf20ce2229ee42dda6b1829a396918_cryptolocker.exe	81
PID 3988 wrote to memory of 4804	3988	2024-05-10_aadf20ce2229ee42dda6b1829a396918_cryptolocker.exe	81
PID 3988 wrote to memory of 4804	3988	2024-05-10_aadf20ce2229ee42dda6b1829a396918_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-10_aadf20ce2229ee42dda6b1829a396918_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_aadf20ce2229ee42dda6b1829a396918_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3988
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4804

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
50KB

MD5
b7a5bf52f5c012569edd27dcd8e01455

SHA1
0f5f92e64aa16670b9961f84867fbddd00410447

SHA256
8f5812aaf3e3a0b6579d1318b052d41ea44c4bb316b9324253f11650e1d4330d

SHA512
db837abbeeea269f8a817314b18ca45a4fa1347bfb37ee5afe0944e32b6a0e90735a49ad5d641d96c424339379cf424fcfc4e52044310e442af593018493b6cf

Download Submit
memory/3988-0-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/3988-1-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/3988-8-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/4804-17-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4804-23-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download