45a647161750a5d17d7128011f9c456ce3118960c5d2630d1e0f6f1c7f6fdd7b

Analysis

max time kernel
94s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 05:54

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General

Target

2024-02-19_e1c3cda70cc6533feb72de4d729baaf0_cryptolocker.exe
Size

36KB
MD5

e1c3cda70cc6533feb72de4d729baaf0
SHA1

69de7857e3f52be27953517e2c84597baae86b98
SHA256

45a647161750a5d17d7128011f9c456ce3118960c5d2630d1e0f6f1c7f6fdd7b
SHA512

4ff9faa917512c25e5ab18bb2cbe7171240496ec5d619baf5afaf9f095d272da53ee4e54cc43c1fd7afff2bca1f01622f715b5e82cf84035062f3a6656c7d228
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKU4:btB9g/WItCSsAGjX7e9N0hunKU4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002322e-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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-19_e1c3cda70cc6533feb72de4d729baaf0_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4428	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 4364 wrote to memory of 4428	4364	2024-02-19_e1c3cda70cc6533feb72de4d729baaf0_cryptolocker.exe	84
PID 4364 wrote to memory of 4428	4364	2024-02-19_e1c3cda70cc6533feb72de4d729baaf0_cryptolocker.exe	84
PID 4364 wrote to memory of 4428	4364	2024-02-19_e1c3cda70cc6533feb72de4d729baaf0_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_e1c3cda70cc6533feb72de4d729baaf0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_e1c3cda70cc6533feb72de4d729baaf0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4364
- 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:4428

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
36KB

MD5
c128a2a1c47ce4abc130e8643e9d48e4

SHA1
f522d446032ba9002662e65d3bbd8fa8efccce33

SHA256
78fe24daa925d68fc6e4fbecc3f391beeb901b9c1c2147a923742f9950580374

SHA512
223226ae5e4181ffa59589c83e2279381bedf56404fb9932ba67d368792807aeb60f416199c63c1b5741c3c1fb36d0e00bb289197ec35e5ef159f7539b6e0e5a

Download Submit
memory/4364-0-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/4364-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/4364-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4428-22-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download