b54bbe058491f4a03c8f2a526820d9f2cf8311c941b4eb96ab7add84eaa977d8

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 04:00

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General

Target

2024-02-18_e893a67d04565238ddc85c5a1428e489_cryptolocker.exe
Size

94KB
MD5

e893a67d04565238ddc85c5a1428e489
SHA1

db3336ad6b18341a666d059f5faec6976bf11acb
SHA256

b54bbe058491f4a03c8f2a526820d9f2cf8311c941b4eb96ab7add84eaa977d8
SHA512

559eed363e41689f39d494e8b174929a5e411e1a81cd1d9fb421a20027cdb9543a298609fa309e0a90e5805e5f393d62efa517f27554a2f7590fb0502a66a82e
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp0y:V6a+pOtEvwDpjtza

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002321e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002321e-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-18_e893a67d04565238ddc85c5a1428e489_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4220	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 3624 wrote to memory of 4220	3624	2024-02-18_e893a67d04565238ddc85c5a1428e489_cryptolocker.exe	85
PID 3624 wrote to memory of 4220	3624	2024-02-18_e893a67d04565238ddc85c5a1428e489_cryptolocker.exe	85
PID 3624 wrote to memory of 4220	3624	2024-02-18_e893a67d04565238ddc85c5a1428e489_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-18_e893a67d04565238ddc85c5a1428e489_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_e893a67d04565238ddc85c5a1428e489_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3624
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4220

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
94KB

MD5
8fd945e55126175c7cbf2a36b720bba7

SHA1
a8c615a0a34a8e57b31321195ce235c2c01b2d77

SHA256
177e90d7d3f290b6aa38e7b494e107a66997b6afc7dd5315e1d3457daa93dcd4

SHA512
0822a39b1d72f14539259b5901e0043eb60344831b5a384326927b1f98b2c4842975e6f319e26aa72f12ddf1ac96a9d6b2559bdf47f68036049f4d181412228f

Download Submit
memory/3624-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3624-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3624-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4220-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4220-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download