a5d425977168e024e63fd262e5f32cf320af82cecca1aef7647ec552e2841050

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
01/05/2024, 00:31

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General

Target

2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe
Size

64KB
MD5

21a29e9083bbe49286141bc81d2a441d
SHA1

29f0b2a37d07d559662c66ae68e63762fa6706e1
SHA256

a5d425977168e024e63fd262e5f32cf320af82cecca1aef7647ec552e2841050
SHA512

231da1b80c241e6922a3a8a99ab878a3f34a6d5125009ef8c2a34cd0cf5c58a7c2e1a5571b1835657b924b8e745638ffb999c8a9165c4ce4972f69b1f860f2a0
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHaxi:btng54SMLr+/AO/kIhfoKMHdPi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b3e-12.dat	CryptoLocker_rule2

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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1212	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 2012 wrote to memory of 1212	2012	2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe	84
PID 2012 wrote to memory of 1212	2012	2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe	84
PID 2012 wrote to memory of 1212	2012	2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  PID:1212

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
64KB

MD5
a1daeb4cb0c05b792819036f0f967ff6

SHA1
7ab0dd8448e9ddcbf56fcc7ce4dd2fc6d97d41bd

SHA256
a76fe8169df039f62473cdfb2d8e24bd27273e8a95e3c60676d5284d68412d05

SHA512
e06c917e7c5922d20ef118ce350b3131117d19d0f96c68a9f2888a396e863181c62f9093d77f1ce40dcbcbef9191f48a8d0dfc1a82632ae0c23fada5d1257fdf

Download Submit
memory/1212-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2012-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/2012-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2012-8-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download