1da0e6787758aec98878037fc50c542004891bf4a32ce921ebbcd96724eb229d

Analysis

max time kernel
141s
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
17/02/2024, 13:31

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General

Target

2024-02-17_4fae7dff0bb79d9fe25959451f7d9536_cryptolocker.exe
Size

35KB
MD5

4fae7dff0bb79d9fe25959451f7d9536
SHA1

5e6d394f2d784becb1e1156d4f3e8c321e3b0173
SHA256

1da0e6787758aec98878037fc50c542004891bf4a32ce921ebbcd96724eb229d
SHA512

db105f5d2e8483ca5b9511fe469881339326501108b05bacc1747a266194dc155ad54a8be09faea69854768840d05745ba354e073a924da89384e3fd303cf0e0
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiA0jgg18uuu3P:btB9g/WItCSsAGjX7e9NABf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023242-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	2024-02-17_4fae7dff0bb79d9fe25959451f7d9536_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2996	gewos.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 4228 wrote to memory of 2996	4228	2024-02-17_4fae7dff0bb79d9fe25959451f7d9536_cryptolocker.exe	84
PID 4228 wrote to memory of 2996	4228	2024-02-17_4fae7dff0bb79d9fe25959451f7d9536_cryptolocker.exe	84
PID 4228 wrote to memory of 2996	4228	2024-02-17_4fae7dff0bb79d9fe25959451f7d9536_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-17_4fae7dff0bb79d9fe25959451f7d9536_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_4fae7dff0bb79d9fe25959451f7d9536_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4228
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2996

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\gewos.exe

Filesize
35KB

MD5
fe0da40c6e072a7180c19686c7e20420

SHA1
6e0fc1cb0d5578026e7d5530c0bdc0b9be794011

SHA256
e0a7066ce83c0b0ba65bfb84053ed040f62039b938023521cee6a67749e4253a

SHA512
8db706205f59b4a21377d70acdc08cbee5b7891182e042746fc4ed12a4c836c1dd81da1ec8cb895734c7f0ccc454bc36845cf971643d8114fb957afa596bcb81

Download Submit
memory/2996-21-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4228-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4228-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4228-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download