56f39f6007c6a8f3010b3125308b2484537b81273fdbcb39204c1d9d3c5fe498

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23/04/2024, 02:42

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General

Target

2024-04-23_37ba41ff73fd34c8cc7ba1ca74f4f8d2_cryptolocker.exe
Size

40KB
MD5

37ba41ff73fd34c8cc7ba1ca74f4f8d2
SHA1

39b0029ac1b2c98bef1892d117d0c34dd3c59d10
SHA256

56f39f6007c6a8f3010b3125308b2484537b81273fdbcb39204c1d9d3c5fe498
SHA512

7a14bb6ab8b42d6046087bcb42027c3592693947e2591731b23462087d48e6db6abdd305221b232ff78ff1456251e65ef2a2136dbbf4e23c62f4c74ea8e3e541
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/ER:btB9g/WItCSsAGjX7e9N0hunKLYu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-23_37ba41ff73fd34c8cc7ba1ca74f4f8d2_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4872	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 4712 wrote to memory of 4872	4712	2024-04-23_37ba41ff73fd34c8cc7ba1ca74f4f8d2_cryptolocker.exe	87
PID 4712 wrote to memory of 4872	4712	2024-04-23_37ba41ff73fd34c8cc7ba1ca74f4f8d2_cryptolocker.exe	87
PID 4712 wrote to memory of 4872	4712	2024-04-23_37ba41ff73fd34c8cc7ba1ca74f4f8d2_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-23_37ba41ff73fd34c8cc7ba1ca74f4f8d2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_37ba41ff73fd34c8cc7ba1ca74f4f8d2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4712
- 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:4872

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
c7116518ac6f3471bdf34c79883bf258

SHA1
3e7c5a8f1b330af8863ec151ec76636a8129f9dd

SHA256
c87889dbf8affce4d3966d3a257e3bbc79a10579b9c4d6d3bbe5a2c3fe91e5f4

SHA512
8f79e79bda03f5b806743d4fb62bfa2cdc64474bf2a225fc1cb6ed2da8393f746f4261df896e10c9fe6bc9fbdb7dfdaddbe848217b7417c66119359f25eb2b58

Download Submit
memory/4712-0-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4712-1-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4712-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4872-24-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download