7bc4cec8f9919f01dfe5dd520c1aa3f8955c537f9042ca17079b21c6e411332a

Analysis

max time kernel
89s
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
06-04-2024 09:52

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General

Target

2024-04-06_d5ebebc3a7b46af84e4c36c39f52b110_cryptolocker.exe
Size

58KB
MD5

d5ebebc3a7b46af84e4c36c39f52b110
SHA1

4e80ecfd2a369e81d6aa7f85aa2c7a0eb31bddbe
SHA256

7bc4cec8f9919f01dfe5dd520c1aa3f8955c537f9042ca17079b21c6e411332a
SHA512

79c2b34e6108166e2a937a1d6a3e1c287f08ed393b0a512c494a11b2f38b0bc745b94127f76deda9eaba8a7dc5bb9a469e059f3d73ce7681ff251390155ecf91
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUH6+:btng54SMLr+/AO/kIhfoKMHd0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023214-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-04-06_d5ebebc3a7b46af84e4c36c39f52b110_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4080	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 5044 wrote to memory of 4080	5044	2024-04-06_d5ebebc3a7b46af84e4c36c39f52b110_cryptolocker.exe	84
PID 5044 wrote to memory of 4080	5044	2024-04-06_d5ebebc3a7b46af84e4c36c39f52b110_cryptolocker.exe	84
PID 5044 wrote to memory of 4080	5044	2024-04-06_d5ebebc3a7b46af84e4c36c39f52b110_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-06_d5ebebc3a7b46af84e4c36c39f52b110_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-06_d5ebebc3a7b46af84e4c36c39f52b110_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5044
- 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:4080

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
58KB

MD5
31d774a987edb9c93bac232e14fd6214

SHA1
5306b2680b1cfc666074acce9f5039928b388311

SHA256
9578af3fa78a241cba02034e19eeed5e422355b07e0d6a14837e4f5238ef02b5

SHA512
bfb1c4a690a35afa8b25c9db9a4d0063000e5f604077467ce37c1edd32cd5fd413c988d53da9d117b3b4db21dfe75e5cbe2d63f704430ee0796861488561be7a

Download Submit
memory/4080-20-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/5044-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/5044-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/5044-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download