47e689ff82d1c53a570b1981cb80e5402c41daf84c729b36afe587f59f4418b4

Analysis

max time kernel
143s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 09:55

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General

Target

2024-02-28_82f7605e74b0ef95c48b40768c4867ee_cryptolocker.exe
Size

36KB
MD5

82f7605e74b0ef95c48b40768c4867ee
SHA1

dfff08f58e0bcb56a62dc16cf677a97c28b55fe5
SHA256

47e689ff82d1c53a570b1981cb80e5402c41daf84c729b36afe587f59f4418b4
SHA512

fe098e9e0e5ef938499f2d7562c0bf5f670fbff2d63939111702b68acf6836eb3ffe58063015ceef0191d73008f156041d8e6bbab3399f147bd0339f8a04d5ad
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCf:X6QFElP6n+gJQMOtEvwDpjBmzDUf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023241-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023241-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-02-28_82f7605e74b0ef95c48b40768c4867ee_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2460	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 576 wrote to memory of 2460	576	2024-02-28_82f7605e74b0ef95c48b40768c4867ee_cryptolocker.exe	97
PID 576 wrote to memory of 2460	576	2024-02-28_82f7605e74b0ef95c48b40768c4867ee_cryptolocker.exe	97
PID 576 wrote to memory of 2460	576	2024-02-28_82f7605e74b0ef95c48b40768c4867ee_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-02-28_82f7605e74b0ef95c48b40768c4867ee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_82f7605e74b0ef95c48b40768c4867ee_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:576
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2460

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4124 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:1844

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
37KB

MD5
7ed48084513e3bfdf56c5fbc6fe5857b

SHA1
b97732b178c9fc245bb7e2e4f057a4a01c3467f8

SHA256
1f4b16f6be8628019218576bfad71ccdb09cc924080481e1817a9523a82a0eee

SHA512
7d5403ace2944625f151a144c2761d7c30b0a86b403c2e13e858a7f533b7c653a9c38d840c97aa11defa5dcd292937f012204a35052b8da46690256c7a5d9400

Download Submit
memory/576-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/576-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/576-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2460-17-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/2460-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download