8e98ad871509d902dc77ce61aa493f732f6d96d5d0da81dbff681f7fea00c907

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 04:43

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General

Target

2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe
Size

41KB
MD5

e03fc59e8fd7e4d1da5886f17d891171
SHA1

01e118c8093508b5e79d38a89c76870d62232a0b
SHA256

8e98ad871509d902dc77ce61aa493f732f6d96d5d0da81dbff681f7fea00c907
SHA512

bf8ba12747f08a43b069d21b56254adef1e96e09a6e31fa9625250bfea941a11bdea5636436285ef179a27a620abc44b5f5849d4fdb1873516422a01a044769f
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/Eym:btB9g/WItCSsAGjX7e9N0hunKLYNm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002340a-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1496	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 388 wrote to memory of 1496	388	2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe	83
PID 388 wrote to memory of 1496	388	2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe	83
PID 388 wrote to memory of 1496	388	2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:388
- 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:1496

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
41KB

MD5
cf741f51e63611b0e42ee07f7c71e85d

SHA1
50dd2713059e8c0ca1c6ab1f41f6c2c1f5798e72

SHA256
b3f0236ac39d1e623a35a23e26a066241b2cae4b897a50fca089ae6028c7b788

SHA512
9e4a94ca9aa157c9bcc4b374d96eb910e074b19bff40dd72e9d8f9283a2480ab83fc6d8d6332a20bfc8a391661566aa4881f0388322171ef1989edeebcdface4

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
10ac4628cac99cd9052d5d523784ab01

SHA1
e6771f2f5422560c54d30500afadda2443f26c55

SHA256
d8caa618c32808b9b07f798bb408d59d97da8a00b324b624e15c51f06e3b1a87

SHA512
212e876251fbc93571bac9cb95bba6ea5d94bd2e54522dce12efc559d7c3d67b58768db223334de996bc939f98b329c4e7d3249c68b60e341418bdf0fab7cb13

Download Submit
memory/388-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/388-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/388-3-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1496-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download