83d174b8e61792ebf45f7b530f86c7e0b04da27c03dcfd44352624d2d461bd71

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 09:23

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General

Target

2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe
Size

60KB
MD5

5cf62fe707503ca3d2548ccd180f7aa0
SHA1

aa4830a974886aa6242f129f8c2b8cbfb7229a77
SHA256

83d174b8e61792ebf45f7b530f86c7e0b04da27c03dcfd44352624d2d461bd71
SHA512

a6e5d2e1f5892fc3da5668af8e3b111d00581676691ee67657f204a484875441be9b0096b7e4a44d274d598993bb8c009d67ba6920c8a34675016b962720c5b2
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZp:btng54SMLr+/AO/kIhfoKMHdap

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023136-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
908	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 4316 wrote to memory of 908	4316	2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe	86
PID 4316 wrote to memory of 908	4316	2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe	86
PID 4316 wrote to memory of 908	4316	2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4316
- 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:908

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
acf515a97aacd64a271508c1a93af02f

SHA1
d836f739dba290c2fc8d4c8bcbfda4a4a37bb51d

SHA256
03c30dd83ac37c01a093501289c51d3f521addceaaaf6a677d1f8d911a5cdb6b

SHA512
09a3cb3f52159a1728391165b5d508c0d747e7b3c438b364225a10d9299ed2115f691c2eee8516eadeca8cb801060c43c776d189d75fa8b3aa09ebe335217aef

Download Submit
memory/908-21-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4316-0-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4316-1-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4316-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download