45e69a2a16da1324d0605be48b9aff343c1db7f2c62d8cd0192c5be535fd37e5

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2024, 08:46

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General

Target

2024-03-05_d1ef0ca7b81125e20aff13417bc7d9ab_cryptolocker.exe
Size

44KB
MD5

d1ef0ca7b81125e20aff13417bc7d9ab
SHA1

4d7186db9bc0a16e48ffe6be44fb539147e10883
SHA256

45e69a2a16da1324d0605be48b9aff343c1db7f2c62d8cd0192c5be535fd37e5
SHA512

5c5c0befe27cae73e4f869c913675a23896ea76d9a80e10f4b1294ffbad7c495cd4e7ba6eaf16afa1e6177f3ad79000fd9072775716b45895d1a90d3715920d8
SSDEEP

768:btB9g/WItCSsAGjX7r3BPOMHocM4vUUOmJ+96egYti:btB9g/xtCSKfxLIcMzUw968ti

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-05_d1ef0ca7b81125e20aff13417bc7d9ab_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4756	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 5028 wrote to memory of 4756	5028	2024-03-05_d1ef0ca7b81125e20aff13417bc7d9ab_cryptolocker.exe	89
PID 5028 wrote to memory of 4756	5028	2024-03-05_d1ef0ca7b81125e20aff13417bc7d9ab_cryptolocker.exe	89
PID 5028 wrote to memory of 4756	5028	2024-03-05_d1ef0ca7b81125e20aff13417bc7d9ab_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-05_d1ef0ca7b81125e20aff13417bc7d9ab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_d1ef0ca7b81125e20aff13417bc7d9ab_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5028
- 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:4756

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
f49974c7a1e2d18e4444b752fdae4e5b

SHA1
f30508bd470cb548aed2b2d6c9310e6fe46d03f6

SHA256
33621170bc3ad480180083d6b9f2376fd3e100e95c42dfb560c6b260587ef7e4

SHA512
0fbcfab250a5c73fe6c0e409baeeeff7c0404e0e11b699cdcd84c0a6a2a4117a02deaf8b727959a01aa570688658ccce9a5cb3a1e627cdf95662d508e7b620d7

Download Submit
memory/4756-20-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/5028-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/5028-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/5028-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download