3faac1b76b89d8b535da2716dae898fae5dd69864c4e7c8a846e450bd683a7bd

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 09:36

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General

Target

2024-02-01_b60750a38532f12adf69c02ef6aeb287_cryptolocker.exe
Size

46KB
MD5

b60750a38532f12adf69c02ef6aeb287
SHA1

dbd400c9b338738d9834c126498e4a48f34d3f50
SHA256

3faac1b76b89d8b535da2716dae898fae5dd69864c4e7c8a846e450bd683a7bd
SHA512

ad470dc07ddb586ba6db7d3c6839ded71b18209c647716cb6926028fece877a38c53e9e21c28611e668a5b951f727497fb153493bf8989897bd46b52a20d1c87
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLaHaMMm2X30E3ak:V6QFElP6n+gMQMOtEvwDpjyaHaXmk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023215-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023215-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-01_b60750a38532f12adf69c02ef6aeb287_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1988	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 2620 wrote to memory of 1988	2620	2024-02-01_b60750a38532f12adf69c02ef6aeb287_cryptolocker.exe	87
PID 2620 wrote to memory of 1988	2620	2024-02-01_b60750a38532f12adf69c02ef6aeb287_cryptolocker.exe	87
PID 2620 wrote to memory of 1988	2620	2024-02-01_b60750a38532f12adf69c02ef6aeb287_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-01_b60750a38532f12adf69c02ef6aeb287_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_b60750a38532f12adf69c02ef6aeb287_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1988

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
47KB

MD5
a0fe6392dac305076cc85bd31ae29436

SHA1
f8dffe7791627854d5cba276c0ea633daa6accbb

SHA256
f2d78d19c344fb24934ffcfaf4a2134ac1c03b2ce94f17c41f945ac415b6777f

SHA512
f95344c3382d8876818594ecc4acf8c061bb9c122b81b11d90d442e74597616afb462b9a299b8a49fd3e4bceee85815f0f3838ea11b3de32258a4c14cce39aa7

Download Submit
memory/1988-19-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/1988-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2620-0-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2620-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2620-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download