1217ef4a62a195218248d9a5c1c191203b4a5a4d14859e6de5d62ff828fcc80e

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 06:33

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General

Target

2024-03-10_ea9ea9b2f9d4ed8479984a82000fd3a6_cryptolocker.exe
Size

57KB
MD5

ea9ea9b2f9d4ed8479984a82000fd3a6
SHA1

b2fe35579815e65dc183c79d171ea05a6743229d
SHA256

1217ef4a62a195218248d9a5c1c191203b4a5a4d14859e6de5d62ff828fcc80e
SHA512

7c2edf4fcbe6b0cdfe56996518c42017d9223c419547427b75278f74d188120a96663bfd3a870786b4364563d8b194d16e178555ffd01bdb32954a1e9192bba1
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLlH9xoI:X6a+SOtEvwDpjBrOd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-10_ea9ea9b2f9d4ed8479984a82000fd3a6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4076	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 2764 wrote to memory of 4076	2764	2024-03-10_ea9ea9b2f9d4ed8479984a82000fd3a6_cryptolocker.exe	88
PID 2764 wrote to memory of 4076	2764	2024-03-10_ea9ea9b2f9d4ed8479984a82000fd3a6_cryptolocker.exe	88
PID 2764 wrote to memory of 4076	2764	2024-03-10_ea9ea9b2f9d4ed8479984a82000fd3a6_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-10_ea9ea9b2f9d4ed8479984a82000fd3a6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_ea9ea9b2f9d4ed8479984a82000fd3a6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2764
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4076

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
58KB

MD5
c0e5473cd46f25162b473832b98a294e

SHA1
0f4c386be03cbaaf1eeab2cfb630140640381e34

SHA256
85328e5423827a07c627eff733be969d85172d181c4095502b18a1df743ebe5e

SHA512
05abfa0f6e03d2e28dcd19ed9fa1617717d7a1bc990a787785bf7ce9011672aed84fab684d34fd62fa225d02a02e5dfd8b45d0a11e002e4cbcc2a2f99823d871

Download Submit
memory/2764-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2764-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2764-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4076-17-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4076-21-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download