36afe97717751600e706943570c68abc1ce52c5ae74553a9a763f426ca09627d

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 08:43

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General

Target

2024-05-21_33aae13b63eccf63a03fe77fb1956d8e_cryptolocker.exe
Size

62KB
MD5

33aae13b63eccf63a03fe77fb1956d8e
SHA1

7ffcb21e233879e05ee5a9c69b9366f583934237
SHA256

36afe97717751600e706943570c68abc1ce52c5ae74553a9a763f426ca09627d
SHA512

0221d6ddc0c054a9cd4f3813c7ee5d7e91e684c73ddd3270ba17c40e14f5c9b46282f1a8a29bfe9520bad61ddeafaa4f3ba68b6dfbb257b5b983d62a32c0c978
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnxi:btng54SMLr+/AO/kIhfoKMHdag

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023270-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-21_33aae13b63eccf63a03fe77fb1956d8e_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4940	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 3228 wrote to memory of 4940	3228	2024-05-21_33aae13b63eccf63a03fe77fb1956d8e_cryptolocker.exe	81
PID 3228 wrote to memory of 4940	3228	2024-05-21_33aae13b63eccf63a03fe77fb1956d8e_cryptolocker.exe	81
PID 3228 wrote to memory of 4940	3228	2024-05-21_33aae13b63eccf63a03fe77fb1956d8e_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-21_33aae13b63eccf63a03fe77fb1956d8e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_33aae13b63eccf63a03fe77fb1956d8e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3228
- 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:4940

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

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Downloads

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

Filesize
62KB

MD5
f3e5b745c9740091a065105e61f0c566

SHA1
ec5ccb6c89bfcf9bdc71b1e6d8d3305bac161582

SHA256
7714b388db5eb1bee6b6ea2378d52765319a0e4fc0be2bb9e034481b448f8133

SHA512
1c44c2d583db2eec07d337001ad5e694761a110eeb68c6af878a659ff1731622fbcdd598b40e4b12fb4c00811034d8f3877ac104f3b70244f1c51c50ee012560

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

Filesize
185B

MD5
208fe836b168c20ad66a51306c3c78b5

SHA1
0a619d3505dd43affae8e456463418e220867e04

SHA256
0c8e95228637b48ca9657c612bacfa67cdbe6f294dcd25ac5fe64ecbd8bc198e

SHA512
0b4d3606c7b2133bd9ae93aa446b04e5ce303bd1f68644454093e2ef36c9ce2bd43860e2ae1c044f9fc6721c44ab175880f70a3388c8bc9377d50ab48ccac40a

Download Submit
memory/3228-0-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/3228-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3228-8-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/4940-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download