5eef8c4e6fcac8e19c228d77e2848548ea25047852b5494cd14b14ae5894830f

Analysis

max time kernel
144s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2024, 00:34

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General

Target

2024-01-27_8b72cc23762a5f215489a1cb003b70f7_cryptolocker.exe
Size

34KB
MD5

8b72cc23762a5f215489a1cb003b70f7
SHA1

fa9a79e50be0968a671b8fe1ab17ff501f5bcb52
SHA256

5eef8c4e6fcac8e19c228d77e2848548ea25047852b5494cd14b14ae5894830f
SHA512

340a59b740dcecc437ce71ddc8fe3d5a2e8ba2659475a73cdc22866bdd277f7d34eece310b13a2fac58d7009c54424cf8b37dc01790851320146a799709543c5
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qd:btB9g/WItCSsAGjX7r3BTd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023224-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-27_8b72cc23762a5f215489a1cb003b70f7_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4244	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 2852 wrote to memory of 4244	2852	2024-01-27_8b72cc23762a5f215489a1cb003b70f7_cryptolocker.exe	86
PID 2852 wrote to memory of 4244	2852	2024-01-27_8b72cc23762a5f215489a1cb003b70f7_cryptolocker.exe	86
PID 2852 wrote to memory of 4244	2852	2024-01-27_8b72cc23762a5f215489a1cb003b70f7_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-27_8b72cc23762a5f215489a1cb003b70f7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_8b72cc23762a5f215489a1cb003b70f7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2852
- 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:4244

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
34KB

MD5
37cfdb7d38b7b632dc8737da024ef322

SHA1
68c82e5b5e705338ab779516d26767ce4e37cfbd

SHA256
064a994a3a29404d70ac3babd40459280a0534a048894d6153142f2d53a7253c

SHA512
33d24d9411825f74e604f555ccef7e861706334bc2b21a6a0173eefb5729408769080f1503ef72fed9ea2f653179a23c75dd0a03ef029ac7545043c8f1d2dc7b

Download Submit
memory/2852-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2852-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2852-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4244-19-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download