51a4341ce43d90df56468a4a2764fab298f5256312ffee16e80867528f335fd3

Analysis

max time kernel
152s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2024 17:26

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General

Target

2024-02-19_2143481eab83e07a291850099fe1c104_cryptolocker.exe
Size

34KB
MD5

2143481eab83e07a291850099fe1c104
SHA1

9db5987590aa9987c92c17697f4f7c8103849dd1
SHA256

51a4341ce43d90df56468a4a2764fab298f5256312ffee16e80867528f335fd3
SHA512

3080002bba98e59ebda6a74fe0e1b0ae28640fe9f7aede84228503dca70c39afe1f9c301d52bb2a3a782ce2b34b2cc7364dc4eaca49c4f33790f34d8007b1bcb
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUqMV6U8zKvGaLigYdO:bA74zYcgT/Ekd0ryfj86U8zbUYdO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002310c-12.dat	CryptoLocker_rule2

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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-19_2143481eab83e07a291850099fe1c104_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3460	hasfj.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 4432 wrote to memory of 3460	4432	2024-02-19_2143481eab83e07a291850099fe1c104_cryptolocker.exe	84
PID 4432 wrote to memory of 3460	4432	2024-02-19_2143481eab83e07a291850099fe1c104_cryptolocker.exe	84
PID 4432 wrote to memory of 3460	4432	2024-02-19_2143481eab83e07a291850099fe1c104_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_2143481eab83e07a291850099fe1c104_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_2143481eab83e07a291850099fe1c104_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4432
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3460

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\hasfj.exe

Filesize
34KB

MD5
d072812228e71236e81e2a44193f5902

SHA1
b4d7f1639f3833e0aba89ae0120d781440e6d9f3

SHA256
2d1a7d8ac358ecdbd3bdd85650421848ef5d59ca3dcf37ee65381a98e97f8742

SHA512
45dc7d6564f34e7dc9bba0589561172de1468d7a2f7dc135dec514aaabd781791a393f6665286b72d0bc9061d903082ece34193135edeb140ed8da5a906a2766

Download Submit
memory/3460-17-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/3460-18-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4432-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4432-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4432-2-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download