4deb94e53c007374f8623f7a310d3feeeebd02e19765c344a2d8d38c713bd2ff

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 07:02

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General

Target

2024-02-14_a0e0f0731de70bbe408ed883e0ed2221_cryptolocker.exe
Size

54KB
MD5

a0e0f0731de70bbe408ed883e0ed2221
SHA1

a88c76a76935c7fc7c867dd3a8679f4183ab32bd
SHA256

4deb94e53c007374f8623f7a310d3feeeebd02e19765c344a2d8d38c713bd2ff
SHA512

6a8cfb3815568d0a9e0a34ac626f1168c48a45c89e9c91faeb7e01e689d963bb0389ddc38134e640eda9f0f14afc0ab72e4dfdb76580b24d77ebbd11dc9e30a4
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CdMFbio:79mqyNhQMOtEvwDpjBPY7xv3g8ZFbH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/860-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023207-13.dat	CryptoLocker_rule2
behavioral2/memory/860-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/860-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023207-13.dat	CryptoLocker_set1
behavioral2/memory/860-17-0x0000000000500000-0x000000000050F000-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-14_a0e0f0731de70bbe408ed883e0ed2221_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4204	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 860 wrote to memory of 4204	860	2024-02-14_a0e0f0731de70bbe408ed883e0ed2221_cryptolocker.exe	83
PID 860 wrote to memory of 4204	860	2024-02-14_a0e0f0731de70bbe408ed883e0ed2221_cryptolocker.exe	83
PID 860 wrote to memory of 4204	860	2024-02-14_a0e0f0731de70bbe408ed883e0ed2221_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-14_a0e0f0731de70bbe408ed883e0ed2221_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_a0e0f0731de70bbe408ed883e0ed2221_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:860
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4204

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
54KB

MD5
700bb96da3ec9b05613b052a2efe2703

SHA1
e41ebe4f458d9ecfb27489c2a2bc11f381a69732

SHA256
22e8fb6dd0d522e995f76dd3cf76c1d70abb2d7d7387628c220e2a575a90fc22

SHA512
640d2918ff3f5e92b248e001d6ee3c874659aa74b02ddf409b4e6cb8cc2bd5c1e8449a41ac4d73c158045b3c991e1f9f54cb1d592ff35ac447c4a0014b79d324

Download Submit
memory/860-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/860-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/860-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/860-3-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/860-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4204-19-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/4204-21-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download