678cb015766ef42bfb1fb94f72dbe5c904aaea1ad99461b92d3447188c202fc8

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 02:27

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General

Target

2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe
Size

43KB
MD5

2220829d980abd0ac0e2efcc96e03306
SHA1

b7e945f0b4f49d2f71a78d06f3e8bface7acf59e
SHA256

678cb015766ef42bfb1fb94f72dbe5c904aaea1ad99461b92d3447188c202fc8
SHA512

c6d65ece8ccaa0d98746358a26f92602bfb2d550c0770227a5399f5589f9ad2f761105d5a3664f716ee77be1caab4469955a7766cc6e35bdf0180e7d5ec06296
SSDEEP

768:btB9g/WItCSsAGjX7r3BPOMHocM4vUUOmJ+96eg1lL:btB9g/xtCSKfxLIcMzUw96DL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023115-12.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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4988	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 4592 wrote to memory of 4988	4592	2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe	86
PID 4592 wrote to memory of 4988	4592	2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe	86
PID 4592 wrote to memory of 4988	4592	2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_2220829d980abd0ac0e2efcc96e03306_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4592
- 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:4988

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
43KB

MD5
bd5c09f7c2dc540c17b343483cc483f4

SHA1
07d8d9da799d0bbb903db9f05f47ae31968a49af

SHA256
20a3d29a322bb13daf9e908a91ed1e932b3c9e36e828a71e3b34a6b02e6d2e5e

SHA512
17811433959f6132810ea8b4e8f066a5a86ed07d9ecd5c128f25fde7e6f8a21b6a93e65fc6ebf9ee6f8395be68f92c0a7ebbeea3e745653b9447249083eedaf1

Download Submit
memory/4592-0-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/4592-1-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/4592-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4988-20-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download