59b570f03b00fc2e9d80940ddeb08359b0123db62996c3c36cd2eeca9b4ddda5

Analysis

max time kernel
139s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 10:04

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General

Target

2024-05-31_c85d20f02403dca176bea960ef97e0a7_cryptolocker.exe
Size

37KB
MD5

c85d20f02403dca176bea960ef97e0a7
SHA1

cd1e65a0bc2f687e3c9e969a06b56a45efc10198
SHA256

59b570f03b00fc2e9d80940ddeb08359b0123db62996c3c36cd2eeca9b4ddda5
SHA512

6aedd24077f3f3d194f1fe4dc440a2b19afa1f0b14d410613eb77cd1db173eca8167d88b37ad1bd4b8160c8d362f184dd4f715c5588916c8d4053757ab80475a
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSyV:btB9g/WItCSsAGjX7e9N0hunRvV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002328e-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	2024-05-31_c85d20f02403dca176bea960ef97e0a7_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
2092	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 3808 wrote to memory of 2092	3808	2024-05-31_c85d20f02403dca176bea960ef97e0a7_cryptolocker.exe	83
PID 3808 wrote to memory of 2092	3808	2024-05-31_c85d20f02403dca176bea960ef97e0a7_cryptolocker.exe	83
PID 3808 wrote to memory of 2092	3808	2024-05-31_c85d20f02403dca176bea960ef97e0a7_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-31_c85d20f02403dca176bea960ef97e0a7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_c85d20f02403dca176bea960ef97e0a7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3808
- 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:2092

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
37KB

MD5
40eaa80906634a1ad292ba18b92fb225

SHA1
632968ff81def43f5df7965f392e898f7fd2b4ad

SHA256
fa8284aa7bfdacd270ba8dc086ce203f1dca305504e5ac46a10358b68f6ff3fb

SHA512
b6e58a4a6aa22f64090b3edf3eb6c2d9a163d939fbcb16b5c64aeda47d31b29b44fcf4bb1e2fc429e978eb86957b8752650b544bc7394e5b8b2e477f3435beff

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

Filesize
185B

MD5
de0f92168cb9f1413f217a8944ed35eb

SHA1
2b12ae91712ab1cb71a6e5f06af197db6e363044

SHA256
256b85314ff0a5800c98121b29fdcb3308d1bdcd101008449fcbcbd8f4523ab0

SHA512
91bd229a78e816fcf7ee40012a76bb376db7faf0aabd67e44b5b01d62dd4de5d56de9204c442d93f9b8b8e872bb84e9e8051e0a3ed88cb8bbc48071af31153fc

Download Submit
memory/2092-25-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3808-0-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/3808-1-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/3808-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download