d8064d3622ef41d83233138d87031c4620f6995355967bf5261c782a499a70fa

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26-03-2024 02:52

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General

Target

2024-03-26_a51649f863d55ffbfe4aeae5187800fb_cryptolocker.exe
Size

60KB
MD5

a51649f863d55ffbfe4aeae5187800fb
SHA1

f13f43b9f0e74f722eac6ecaa8f0d01dbb3dcaca
SHA256

d8064d3622ef41d83233138d87031c4620f6995355967bf5261c782a499a70fa
SHA512

00da97b928b1b77c0a40f8891737689ba99070c22fcad3658939be41eb547c56b62b570b58a1d071bb96d78ae9499c34e58ad89ff3aa940b7fc6062a4d9fd213
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHi:btng54SMLr+/AO/kIhfoKMHdv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-26_a51649f863d55ffbfe4aeae5187800fb_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1576	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 2720 wrote to memory of 1576	2720	2024-03-26_a51649f863d55ffbfe4aeae5187800fb_cryptolocker.exe	88
PID 2720 wrote to memory of 1576	2720	2024-03-26_a51649f863d55ffbfe4aeae5187800fb_cryptolocker.exe	88
PID 2720 wrote to memory of 1576	2720	2024-03-26_a51649f863d55ffbfe4aeae5187800fb_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-26_a51649f863d55ffbfe4aeae5187800fb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_a51649f863d55ffbfe4aeae5187800fb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2720
- 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:1576

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
60KB

MD5
021e506a432d0a589e2577be7c4eb7f1

SHA1
1fb6015071ca8e79f8b27fec403cd6854134f1d9

SHA256
4ed9c43dab603e0ee88720a8cff0c2313caf16a3336bab14f392faa5bc37ea48

SHA512
5d4fe3e29e76bf13d6f295c40a1af69b5eeb5716430dcccdb8160336ae7fd8f2bdf36264680b3b0cb37500cc34149db0f6e63c980af9cbe6d77e036e32d9f816

Download Submit
memory/1576-25-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/2720-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2720-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2720-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download