ee44447b359781a3c438b6966a708ae4341bba557ff172aa4c084e6871288b7b

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 20:32

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General

Target

2024-04-10_cffe1c2fd3209d94b8238e8cd916fdeb_cryptolocker.exe
Size

38KB
MD5

cffe1c2fd3209d94b8238e8cd916fdeb
SHA1

965b6478687874c78683ae68f1b9edfbc1e5ce1e
SHA256

ee44447b359781a3c438b6966a708ae4341bba557ff172aa4c084e6871288b7b
SHA512

3fe42379f954fe1973b5d6b7ed9ec5b934ade04aed9f985d9418a0dd316309cf5ec82ebc9d6802268d13d748dffb1b4440d7c06cf84279076a840754ba7161f7
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/E3:btB9g/WItCSsAGjX7e9N0hunKLYc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023215-12.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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-04-10_cffe1c2fd3209d94b8238e8cd916fdeb_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4816	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 2756 wrote to memory of 4816	2756	2024-04-10_cffe1c2fd3209d94b8238e8cd916fdeb_cryptolocker.exe	83
PID 2756 wrote to memory of 4816	2756	2024-04-10_cffe1c2fd3209d94b8238e8cd916fdeb_cryptolocker.exe	83
PID 2756 wrote to memory of 4816	2756	2024-04-10_cffe1c2fd3209d94b8238e8cd916fdeb_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-10_cffe1c2fd3209d94b8238e8cd916fdeb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_cffe1c2fd3209d94b8238e8cd916fdeb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2756
- 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:4816

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
38KB

MD5
7826824da8e351c754d65f4e246b8a98

SHA1
d80895f4c7a6b1d3fab398acec98f5724fb7f8e9

SHA256
ae452c7f18d1100322e9f1ef4af9abe3e2b01a5c6efb41aced73055de5c8adf0

SHA512
b8896e4f996f584cb732f038a132f5cc4d055146fb2d129c989ec5f7a635ae6afdcabdda8721feeb7dd0194b8a36bb102a71541cb3c3f7294ff31033fb1583c8

Download Submit
memory/2756-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2756-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2756-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download