2480d7025b9f7db326bc3c5e7242f6c5fb1afa9d532522c0fb8886e7f18cc074

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23/05/2024, 20:52

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General

Target

2024-05-23_2daedc9104ad05d3189cccd79726850e_cryptolocker.exe
Size

52KB
MD5

2daedc9104ad05d3189cccd79726850e
SHA1

87e9ef4e7841c15d99af9b0c84ad68b5060b7452
SHA256

2480d7025b9f7db326bc3c5e7242f6c5fb1afa9d532522c0fb8886e7f18cc074
SHA512

ff0525d124769e4deb5a7a1c85a44ba995518674d23540f8072fc3369dd1cb96a33587aa5593fb71b4a48768cb286d11b07623251fc941d66b54f0422ea5b1f9
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTHGfS0:79mqyNhQMOtEvwDpjBxe8GGfz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/944-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023444-13.dat	CryptoLocker_rule2
behavioral2/memory/944-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/944-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023444-13.dat	CryptoLocker_set1
behavioral2/memory/944-17-0x0000000000500000-0x000000000050F000-memory.dmp	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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-23_2daedc9104ad05d3189cccd79726850e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2372	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 944 wrote to memory of 2372	944	2024-05-23_2daedc9104ad05d3189cccd79726850e_cryptolocker.exe	85
PID 944 wrote to memory of 2372	944	2024-05-23_2daedc9104ad05d3189cccd79726850e_cryptolocker.exe	85
PID 944 wrote to memory of 2372	944	2024-05-23_2daedc9104ad05d3189cccd79726850e_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-23_2daedc9104ad05d3189cccd79726850e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_2daedc9104ad05d3189cccd79726850e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:944
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2372

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
52KB

MD5
f182ee71095ddc9c7f0b4d7d37f20dde

SHA1
e6619013e05bd41753ad73c50c140d416bec5aa5

SHA256
fb94efc374e36d6ad8fdd6542b239423429eac613780cfa25bda41f947cf5ecc

SHA512
1ed63b91538372f9ec10750d5df31a08a8e044ae612afb0bd16498526d4d538aa8046e6e28f683cb203c6f51725c21a21bed5e20e3f5afc3a8fe34ac99aa4143

Download Submit
memory/944-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/944-1-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download
memory/944-2-0x0000000000870000-0x0000000000876000-memory.dmp

Filesize
24KB

Download
memory/944-9-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download
memory/944-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2372-19-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/2372-25-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download