c4bf1f3e07b7a88b828b2a5e6dc2607df81426814698c3fd1b8578ae06ec90ad

Analysis

max time kernel
93s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 20:54

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General

Target

2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe
Size

63KB
MD5

dcca372632b971aa18ab6086f57f12c1
SHA1

e9a75dd10328322b30eb0894ced189c23c750f9c
SHA256

c4bf1f3e07b7a88b828b2a5e6dc2607df81426814698c3fd1b8578ae06ec90ad
SHA512

4574100e39f2c5b5b80f8a19b1a99ebe664e43b0a7926af13887669e82fdf019e2d54030cddec560ebb2a4aeb03a61dc5b2bfcafbec51c9f0851b6cd0ea34334
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnx9:btng54SMLr+/AO/kIhfoKMHdaL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002344b-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4072	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 2888 wrote to memory of 4072	2888	2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe	82
PID 2888 wrote to memory of 4072	2888	2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe	82
PID 2888 wrote to memory of 4072	2888	2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2888
- 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:4072

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
63KB

MD5
5f9b896c72bffaf037e0201d2f6399bf

SHA1
b04d50b06b02b8d89807e9b809299a993299131e

SHA256
80148aae380ad888ba992ab311400b44627dd65abe7a8ed71458282595bdd1f3

SHA512
74dfb1878157ec453c0eefd0c5798c14f2ab9fb5454b0fb8353924254864bf00e784fa11a88c2ccd15da2f5857d9bfd0ea25b90562621053db73a5bc954e1745

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
155870028d5617fab8a4513c8a1e67e9

SHA1
d61cd64e1bd13c8a18c350a7e6f5882d8e5a6ed3

SHA256
2c55ea1ae3f0002d6e44dc9ba4008eeaf337698a9f8d80ec345cca839cbaa0ef

SHA512
c6ade10b7caa4b7015c1717f194bce25d1868aa55f2161cf14f492e78ce595bf208f9fa9d8e5f24416da80cfc68e262babf221b02cd68059f0826d7982e3d457

Download Submit
memory/2888-0-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2888-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2888-8-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4072-25-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download