558834638d21acf3c1aa70ff869eec4d594162f047e484ceb91fa48682264fdc

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 05:17

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General

Target

2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe
Size

36KB
MD5

edf2751c92fdb5e17a7e05001382dedc
SHA1

d2d8c7a59ab0ccb82074af123ba60070c5a0503f
SHA256

558834638d21acf3c1aa70ff869eec4d594162f047e484ceb91fa48682264fdc
SHA512

782df8f2a839dc580a5ac43a5d68a53643f7cac2c5cf4f3ba084feccfc7e822d4c3332b6481567f9b15d9f977a137d758701ae175bbda2c14e3d62cd7eb3fb2b
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKU8:btB9g/WItCSsAGjX7e9N0hunKU8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023203-12.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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1516	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 3364 wrote to memory of 1516	3364	2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe	84
PID 3364 wrote to memory of 1516	3364	2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe	84
PID 3364 wrote to memory of 1516	3364	2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3364
- 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:1516

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
36KB

MD5
d7dede30feef27b09ae2aa6d1ef9c8ad

SHA1
998ee68926e474712c9d091e96eb5ffb17b2ef0f

SHA256
0d365fdff9028f00eb7121c28802c919c7185c1a3f9cc602a367436ef2ece601

SHA512
d0bb823e5ea81c1cb97565c056838dc6c3a6d4e2e14885c8737be40ae691ee3caf22d4cbf2f2dc1f826a392de8d0b76be0cf4fd076d28e29a1d245f0846b5d02

Download Submit
memory/1516-20-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/3364-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3364-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3364-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download