36a759f40a499c83c1f133e880e4c3bc101ac01ab22ca9bb45f924812e86cac9

Analysis

max time kernel
149s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
03-05-2024 02:32

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General

Target

2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe
Size

35KB
MD5

f34bbc5a223544d1122e2d1078d3fcc1
SHA1

c277124dd88218163418fc3a3c7cf0ec892c0dbf
SHA256

36a759f40a499c83c1f133e880e4c3bc101ac01ab22ca9bb45f924812e86cac9
SHA512

bf9bec8323c7b72dfa5becf7fbdfbfd328b25d79d930065abb5ef8df83ecb0bac7471385044ab0be90c49720fcb905edabe91f27fa20e4d1d69cf5efc043f26e
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qZ59:btB9g/WItCSsAGjX7r3BTZ59

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b99-12.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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4264	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 4696 wrote to memory of 4264	4696	2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe	84
PID 4696 wrote to memory of 4264	4696	2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe	84
PID 4696 wrote to memory of 4264	4696	2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4696
- 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:4264

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
36KB

MD5
0042c0d54eccd714b0a92891c922598c

SHA1
bd994ec266df6fb2389d20070f83d4bcd4882c7f

SHA256
f0c5e6f7fb2b48a807fe3e2cd6b6eebd66319afc68bcb2fc2b0882da17342b44

SHA512
7934d7bb91585e22d8bd7c09a22a4f2f1f4cff54bb7dc503e4c43b921a17e5aa5cbb974b5a9acbf3f52b7747f3ad0971a673e1c309677cc9e3f6868204ee7249

Download Submit
memory/4264-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4696-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4696-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4696-8-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download