3adb3c420b1eabe03c6043068cc49e5e101330a5a6a3667852dec727301fcd37

Analysis

max time kernel
138s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
02/05/2024, 22:25

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General

Target

2024-05-02_5a242b7318b2ddca727be8c8b21b5ca1_cryptolocker.exe
Size

38KB
MD5

5a242b7318b2ddca727be8c8b21b5ca1
SHA1

4b5a55ba284a413ffad88d66af793ac355cafe63
SHA256

3adb3c420b1eabe03c6043068cc49e5e101330a5a6a3667852dec727301fcd37
SHA512

15086dbcb4cec6eb1c90b2c786732ca4e19bda25188a31488cb5412dad0af8109b0ac4137f10b582257abca12cb372cd69a94ccc46a25cedcccd20d9bc84f315
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSyHmYvV8s:btB9g/WItCSsAGjX7e9N0hunRvGIV8s

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b7f-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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-05-02_5a242b7318b2ddca727be8c8b21b5ca1_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4012	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 2636 wrote to memory of 4012	2636	2024-05-02_5a242b7318b2ddca727be8c8b21b5ca1_cryptolocker.exe	86
PID 2636 wrote to memory of 4012	2636	2024-05-02_5a242b7318b2ddca727be8c8b21b5ca1_cryptolocker.exe	86
PID 2636 wrote to memory of 4012	2636	2024-05-02_5a242b7318b2ddca727be8c8b21b5ca1_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-05-02_5a242b7318b2ddca727be8c8b21b5ca1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_5a242b7318b2ddca727be8c8b21b5ca1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2636
- 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:4012

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
38KB

MD5
4a202dc5d73e9b45b8a75dc28f8a549e

SHA1
6947c1f6ec7f7321b5d3e41e05d50abf0d12ec5f

SHA256
f8aa68c32aa39a2362abc77ef488a97ca70e7451620a5fe746f19ad9d4795558

SHA512
e7f33acfd326a0c09071797172938d2c2c131e72f4cfd4282ec0fbbef382999e31615211d47b7f8023945e7931f5ec400e087b5a9bbfc772bfa6bdd71481dfb2

Download Submit
memory/2636-0-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/2636-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2636-8-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/4012-25-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download