b895d789aa9ee36f15a0424555ffef86bbf8db6e897fdac0258741e3f6173130

Analysis

max time kernel
133s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25/05/2024, 04:06

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-25_be5b58a71a930bd45e84ad997694da34_cryptolocker.exe
Size

37KB
MD5

be5b58a71a930bd45e84ad997694da34
SHA1

3e1d7836e99336f6f98ada668850c3f20338d4dc
SHA256

b895d789aa9ee36f15a0424555ffef86bbf8db6e897fdac0258741e3f6173130
SHA512

29fff915f5ef6214f39fae99e364bec2476ac6f409e476e04ccb0dc779ea9bc638ab167d5e85669a421e296bfdf9ee7051dcfcccf321eaa1eab5bb51f45a6ea7
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSy9:btB9g/WItCSsAGjX7e9N0hunRv9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-25_be5b58a71a930bd45e84ad997694da34_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
3076	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 720 wrote to memory of 3076	720	2024-05-25_be5b58a71a930bd45e84ad997694da34_cryptolocker.exe	83
PID 720 wrote to memory of 3076	720	2024-05-25_be5b58a71a930bd45e84ad997694da34_cryptolocker.exe	83
PID 720 wrote to memory of 3076	720	2024-05-25_be5b58a71a930bd45e84ad997694da34_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-25_be5b58a71a930bd45e84ad997694da34_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_be5b58a71a930bd45e84ad997694da34_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:720
- 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:3076

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
37KB

MD5
ee265bf34ebb39fa225b7d74b8adeb76

SHA1
90a06942c434fc89c863b987c1ca95860351ae39

SHA256
47e84b04ed4add1d204b64c571879aaedccebd5050a69b3b6b6cd32017135b0e

SHA512
8522aa686ae07aaa0e04f4ba0fcda66436cbd77d5430703362ff8fe4db200ce3fd520a482cdc8fa7eb743b45c68a1e2987cb65538dc4bdcc439b64ceb253a6d7

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

Filesize
185B

MD5
12e2cc81294ddbc3c18465152262a1ed

SHA1
a4489668c0517ad8e8f6f3eb699a96689a77e7e2

SHA256
2d29510f2289be08a6e2322f1088220dea2bfa1d5f133eb20599f02a80c1b6cb

SHA512
3ec51f134d2109e6a32f776a3ebf46930ee930f4535d4bcddea018037ba4116f369605197bea32998f7cda34647d7980f2d94a130c8c5c604edd63104fdb5d7e

Download Submit
memory/720-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/720-8-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/720-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3076-25-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download