0ee92fef514aa14fca66c81cfe4b1e21ac8d7ae3eedb79736362cb6a71bb1068

Analysis

max time kernel
135s
max time network
167s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14-02-2024 17:22

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General

Target

2024-02-14_a9f1b9d74ef025cd1ae2875e492755b6_cryptolocker.exe
Size

35KB
MD5

a9f1b9d74ef025cd1ae2875e492755b6
SHA1

3db4fbe4ee2df806d2eccf50432b92ce5e948801
SHA256

0ee92fef514aa14fca66c81cfe4b1e21ac8d7ae3eedb79736362cb6a71bb1068
SHA512

93dbc1f84551868e730fa79c474d71c4935a2063587e451adf88352d4db96d627c75049b80376b6843ef7833276be11e3247eb6a18a565dc445a9f9064d05250
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiA0jgg183F:btB9g/WItCSsAGjX7e9Nr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023108-13.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-14_a9f1b9d74ef025cd1ae2875e492755b6_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
656	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 4492 wrote to memory of 656	4492	2024-02-14_a9f1b9d74ef025cd1ae2875e492755b6_cryptolocker.exe	84
PID 4492 wrote to memory of 656	4492	2024-02-14_a9f1b9d74ef025cd1ae2875e492755b6_cryptolocker.exe	84
PID 4492 wrote to memory of 656	4492	2024-02-14_a9f1b9d74ef025cd1ae2875e492755b6_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-14_a9f1b9d74ef025cd1ae2875e492755b6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_a9f1b9d74ef025cd1ae2875e492755b6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4492
- 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:656

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
35KB

MD5
b384f8d1709dfc91bb653a9b9ef2cbd5

SHA1
ca753fccfa8ac9a5ef09b774f6f7a34e0b0b578d

SHA256
bbc0546b4d6a3b80f4db5f6a80098114d43396cbf02d54c43cf02b0dfd0f8f61

SHA512
096c043d9c604ede9af9ac9e749d9dea2976f954d988e22fa43e879f013c041d3c09765f96515b333288c944b0c1e7367bda2fe4cf34298ec6f93ad06a63d8f9

Download Submit
memory/656-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4492-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4492-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4492-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download