ea177fef002041fbe30840d6eca4f049f127583d8cad9c3de39b291fe635d039

Analysis

max time kernel
140s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 06:33

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General

Target

2024-05-16_262cd9a9f77e75996770cfd47c142a2a_cryptolocker.exe
Size

58KB
MD5

262cd9a9f77e75996770cfd47c142a2a
SHA1

8a9c7d01c2ed4ff308e885cb887bc01268fd4321
SHA256

ea177fef002041fbe30840d6eca4f049f127583d8cad9c3de39b291fe635d039
SHA512

20747cee57a6783f126b145eaaf4242fd801e2d4bd1a105857a4ad90efbca5d89e8ab919105df9114740080091a765402a7aa08830626490edb3c142f19974e0
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUH6h:btng54SMLr+/AO/kIhfoKMHdX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023412-12.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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-16_262cd9a9f77e75996770cfd47c142a2a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1784	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 3420 wrote to memory of 1784	3420	2024-05-16_262cd9a9f77e75996770cfd47c142a2a_cryptolocker.exe	82
PID 3420 wrote to memory of 1784	3420	2024-05-16_262cd9a9f77e75996770cfd47c142a2a_cryptolocker.exe	82
PID 3420 wrote to memory of 1784	3420	2024-05-16_262cd9a9f77e75996770cfd47c142a2a_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-16_262cd9a9f77e75996770cfd47c142a2a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_262cd9a9f77e75996770cfd47c142a2a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3420
- 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:1784

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
58KB

MD5
bcb73f1e7a853b87c76132f5f018462f

SHA1
764c2bf378250cdf551e79e159908b12e0d21236

SHA256
2faabfc61b5d2d578b6a54b20b7da402cd03107a88c5f42be3b5fe4ee3fb22de

SHA512
58dfc25e0c5edfb712041a797ba3f2b399d5c74131c0cd9ed87c2c11118073f9e4a51625886bf26c8b6ca9edc95a00e44d1020b8e367ede53eba4fccc41c945a

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

Filesize
185B

MD5
f073576d78c0e1abc329f145d79db038

SHA1
d9cfe6364adc2206b4ce0fcee87e2d9c84c5520a

SHA256
dd2bfbc2d5f4e5ac21e1513d4a6ff0706fa0c27dd45535d33be7447368239767

SHA512
f72eda7523e6f8104a515fd89dfe6ddf6c91efcd8be29a787c77ed40f769e7794bc70b0e070d616f7d0a51355de75e66febc955820aa514c3f1ed0cea0af394b

Download Submit
memory/1784-25-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/3420-0-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download
memory/3420-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3420-8-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download