789dafa2e9efb72b7d767fcd2edc003031659dc670f60187f64ea2a97a0a7308

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 05:51

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General

Target

2024-05-10_981f688469e7bb0efbb9ee21dfa86c22_cryptolocker.exe
Size

41KB
MD5

981f688469e7bb0efbb9ee21dfa86c22
SHA1

89ca1339ee703b4c73d3c0d9d959e201776c770b
SHA256

789dafa2e9efb72b7d767fcd2edc003031659dc670f60187f64ea2a97a0a7308
SHA512

2a9539a12fcc4adcc9025671c949a11d2790393cc1f83a67c0be97583bfce7abe169241c019e27d9688781eda123bab05b54b5d8bd2d83301ad4217aef1574cd
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/ELn:btB9g/WItCSsAGjX7e9N0hunKLYAn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002328e-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-10_981f688469e7bb0efbb9ee21dfa86c22_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3828	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 4704 wrote to memory of 3828	4704	2024-05-10_981f688469e7bb0efbb9ee21dfa86c22_cryptolocker.exe	82
PID 4704 wrote to memory of 3828	4704	2024-05-10_981f688469e7bb0efbb9ee21dfa86c22_cryptolocker.exe	82
PID 4704 wrote to memory of 3828	4704	2024-05-10_981f688469e7bb0efbb9ee21dfa86c22_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-10_981f688469e7bb0efbb9ee21dfa86c22_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_981f688469e7bb0efbb9ee21dfa86c22_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4704
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  PID:3828

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
5f23acbd1ca20e0f06ec7c60978b0d43

SHA1
90ebdb55215430edf6602c9ca4032178282fa307

SHA256
b97e957025bc5234bc6f2fd9f91b97db2a2f93bdd21f1c1a4dfee2ce8be886cd

SHA512
e30b00a51cc4ed7b7c41e0a39fbe890ced35182a9e0ff24487695d638b356630f2a660e1d15b093f893e6f2cfbbd6b9e7b6167150e548ed112ab6221cc530123

Download Submit
memory/3828-25-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/4704-0-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/4704-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4704-8-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download