91384c1c79533cb492454157175f12a697cde889efb01912011e54ee542ce16d

Analysis

max time kernel
93s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01-05-2024 04:11

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General

Target

2024-05-01_5025c1b320a76283e91b9f3e143daf4b_cryptolocker.exe
Size

63KB
MD5

5025c1b320a76283e91b9f3e143daf4b
SHA1

82c312b4a57abca9d4307c04cb88ade72a5a219a
SHA256

91384c1c79533cb492454157175f12a697cde889efb01912011e54ee542ce16d
SHA512

7936c616e7c1c8609242e72da87b8b96df1a7bc53207c0b934f215a8a4518c968489ebf1e3865c4ab2149abf112c7af6d9d2e6d456d0e6992ad177a3a0c126b7
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHax2:btng54SMLr+/AO/kIhfoKMHdP2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000233c2-12.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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-01_5025c1b320a76283e91b9f3e143daf4b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4740	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 4284 wrote to memory of 4740	4284	2024-05-01_5025c1b320a76283e91b9f3e143daf4b_cryptolocker.exe	84
PID 4284 wrote to memory of 4740	4284	2024-05-01_5025c1b320a76283e91b9f3e143daf4b_cryptolocker.exe	84
PID 4284 wrote to memory of 4740	4284	2024-05-01_5025c1b320a76283e91b9f3e143daf4b_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-01_5025c1b320a76283e91b9f3e143daf4b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_5025c1b320a76283e91b9f3e143daf4b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4284
- 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:4740

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
7af5214375c3113cf3b0b4744346cc8b

SHA1
de9ebd5df0b53a9b60e470f9ec97fb674d404007

SHA256
10340964f7d7bf911f8358502ed567e025711db423e14e36da596e5102ca06ea

SHA512
95bb7a00b80f0966c68f08fce7011c46def09546aa3c971dad67e509e3a26a9796cf747781a5aabc80ddb91a7709f2379a32380062aac5a3db9b8b68b6bc7035

Download Submit
memory/4284-0-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/4284-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4284-8-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/4740-25-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download