397b0dfa019e341c2c0483b74a8ad821cf9606e086d8eab054e759a7d6204b2a

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
07/05/2024, 03:46

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General

Target

2024-05-07_bc5a8e1c87c115056edefbf9490332c6_cryptolocker.exe
Size

44KB
MD5

bc5a8e1c87c115056edefbf9490332c6
SHA1

c704fae3c7ae695cc4da5dedfc1c6bc865aa1982
SHA256

397b0dfa019e341c2c0483b74a8ad821cf9606e086d8eab054e759a7d6204b2a
SHA512

d0f7895a09a26bd283b7a83e5377b0e17c6c6ccaab172de113b402304a1da192b8f0bdb18d8c26ca07de8d2ea3c1899092888793066dca2735695bce3aba745f
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunrkwIxZWQpyG:btB9g/WItCSsAGjX7e9N0hunrknljKrm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b7f-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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-05-07_bc5a8e1c87c115056edefbf9490332c6_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1104	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 1880 wrote to memory of 1104	1880	2024-05-07_bc5a8e1c87c115056edefbf9490332c6_cryptolocker.exe	83
PID 1880 wrote to memory of 1104	1880	2024-05-07_bc5a8e1c87c115056edefbf9490332c6_cryptolocker.exe	83
PID 1880 wrote to memory of 1104	1880	2024-05-07_bc5a8e1c87c115056edefbf9490332c6_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-07_bc5a8e1c87c115056edefbf9490332c6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-07_bc5a8e1c87c115056edefbf9490332c6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1880
- 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:1104

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
44KB

MD5
a34b57c3b1eb281e5e58878ad99e277d

SHA1
41b148fcaacb638c1c74aec62a2b1914d47bf173

SHA256
37b2672fb042248b9a9e7b1b1b127ee7214a8bd2fb4bfc01c0d25253294b5585

SHA512
a62d8d0774b89902c7398e7e637257535344c6fca60f11ff2c8b7295f58ec9e86eedc3a58c2d74b96d55dde3198a6201771cf0ad0de774c9a4464d38a88a262a

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

Filesize
185B

MD5
b1b68f7ee29e2ecab429bbe8225a38b8

SHA1
12ebb1892550d90360369195373f50fc9d4840cc

SHA256
d7dcbe265777a718469b073826d8803e79aa89bfcec26f2a5a9fe68371fe0132

SHA512
a9c188a35235d9e816147e05686af54f16c5881e17d90f11a8b1ec0d7b8adcefdb0c259978a769ae64b724da468106415a284d063c9f4866b16f3e4cd6409abc

Download Submit
memory/1104-25-0x00007FFE07970000-0x00007FFE07B65000-memory.dmp

Filesize
2.0MB

Download
memory/1104-42-0x00007FFE07970000-0x00007FFE07B65000-memory.dmp

Filesize
2.0MB

Download
memory/1880-0-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/1880-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1880-8-0x00007FFE07970000-0x00007FFE07B65000-memory.dmp

Filesize
2.0MB

Download