633037235f0941cec3b853756d05bd07537d855a6a02e7ecbfcd7d16babfbc73

Analysis

max time kernel
93s
max time network
113s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 17:55

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General

Target

2024-02-22_da4bf998aa720be10330ef8eefc02705_cryptolocker.exe
Size

40KB
MD5

da4bf998aa720be10330ef8eefc02705
SHA1

df320eccab765094ddaeb9fac279d053868beab1
SHA256

633037235f0941cec3b853756d05bd07537d855a6a02e7ecbfcd7d16babfbc73
SHA512

88cb8aadf9555fcf6c3b88341527591afaf148be79fb78c2a59649069a82a3f3d06d2743d32f46bdcb8bb71be7b995b423455df7d2af870105daaac8753e55d7
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunrkwIxZnp1:btB9g/WItCSsAGjX7e9N0hunrknp1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00c300000001e848-12.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-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\International\Geo\Nation	2024-02-22_da4bf998aa720be10330ef8eefc02705_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
3468	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 3660 wrote to memory of 3468	3660	2024-02-22_da4bf998aa720be10330ef8eefc02705_cryptolocker.exe	90
PID 3660 wrote to memory of 3468	3660	2024-02-22_da4bf998aa720be10330ef8eefc02705_cryptolocker.exe	90
PID 3660 wrote to memory of 3468	3660	2024-02-22_da4bf998aa720be10330ef8eefc02705_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-22_da4bf998aa720be10330ef8eefc02705_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_da4bf998aa720be10330ef8eefc02705_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3660
- 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:3468

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
40KB

MD5
aecd35f3582b6856e403fefef8c9fffe

SHA1
b10f389f638bc4845363e4c072db3a1e32461a8e

SHA256
998208aa5c6cae99915729a5a0802461fa6b66b36a1495331e0e9b2af108f0be

SHA512
6ea1ef9bb8958673f0f0e55bf0889f67e6ba8b47cbfbfd6b8dccb45e1c97af5b86ae92b0c8e2dcd242c446e70fb6bedd8eb03f2ddc4bebe825c50fb1232a583d

Download Submit
memory/3468-23-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3660-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3660-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3660-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download