bc9e8bb9d22e34e36609a6a7ef13011307c2deffad2814fd8ec6731929863cf5

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 18:05

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General

Target

2024-02-21_f6cf463fd95a2db6b8b05434f3fd69d5_cryptolocker.exe
Size

60KB
MD5

f6cf463fd95a2db6b8b05434f3fd69d5
SHA1

31708de23e286e3a9d6cbcee02661253565b1d90
SHA256

bc9e8bb9d22e34e36609a6a7ef13011307c2deffad2814fd8ec6731929863cf5
SHA512

60e1c78a1b36a7eb634302d82e8c57e64196decb21305f3fd0e76a02f8aaf8d13016874e03674d106abdc1332d032ca89eb777d5646db7fc0fc1e213ae08c3d0
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHOL:btng54SMLr+/AO/kIhfoKMHdZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231ee-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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	2024-02-21_f6cf463fd95a2db6b8b05434f3fd69d5_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	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 3924 wrote to memory of 2820	3924	2024-02-21_f6cf463fd95a2db6b8b05434f3fd69d5_cryptolocker.exe	85
PID 3924 wrote to memory of 2820	3924	2024-02-21_f6cf463fd95a2db6b8b05434f3fd69d5_cryptolocker.exe	85
PID 3924 wrote to memory of 2820	3924	2024-02-21_f6cf463fd95a2db6b8b05434f3fd69d5_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-21_f6cf463fd95a2db6b8b05434f3fd69d5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_f6cf463fd95a2db6b8b05434f3fd69d5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3924
- 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:2820

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
3eb461d8606d1c51a847e11d997f0797

SHA1
bc2aba00944e499462d38e66340d8d8ca20442bd

SHA256
8460d90a507188c80893b2ddc94f0479b50fa37c42df2ea7a3e8f1a34587b519

SHA512
7c7bc89d43b16b692a7879c6beb4bcd849a6d82aa44248741e8a4881f80b7707c31ebc7fe7e4158cfa75fd1ad86f5f22e5a71836323572f6257a36fa38061e12

Download Submit
memory/2820-24-0x0000000002220000-0x0000000002226000-memory.dmp

Filesize
24KB

Download
memory/3924-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3924-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3924-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download