cda27fe4501ea7cd945e9ad630ae36b3e6c878a21da73fac75936956fdf83afd

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 18:37

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General

Target

2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe
Size

44KB
MD5

74a38fbfc415c852b600ae35b02789b1
SHA1

d135e0f4e198d4bc39b7f9915b11947151ba0e64
SHA256

cda27fe4501ea7cd945e9ad630ae36b3e6c878a21da73fac75936956fdf83afd
SHA512

af9884541105a891278dc8533c5e64be95e7a98ebb262ab187459e2f9e4cde12bcbb52c65b25c83fbfdcbd1f0a125977c31e689d5bf2d46ab3f4fafc976d8b4e
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIIF:bm74zYcgT/Ekn0ryfjUF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4408-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_rule2
behavioral2/memory/4408-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3312-26-0x0000000008000000-0x000000000800D000-memory.dmp	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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3312	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 4408 wrote to memory of 3312	4408	2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe	82
PID 4408 wrote to memory of 3312	4408	2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe	82
PID 4408 wrote to memory of 3312	4408	2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3312

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
44KB

MD5
6c102d363a0257b57a0dce8f7779606d

SHA1
0b59a114d6840eb1e3f3577d0c50e92b56b233b7

SHA256
7f20135c7a465a6abc1d7c4b24213107ed8ebc61b17b42554d04193031623c8c

SHA512
80ae3b2ede7701729e1e236a999cf84333dba7ff854194e6838bc453dc4bb4110638c39d7ef233815dac9e7d64f416e04d8190d737552a4959272c73674e0381

Download Submit
memory/3312-25-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/3312-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4408-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4408-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4408-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4408-9-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4408-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download