570aeb950430c19f3ab771889813253f2fa3e78dc55fecd1222ec816712dbd9c

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2024 03:52

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General

Target

2024-02-19_b14b40af5402882e3b3d9b01d762da18_cryptolocker.exe
Size

35KB
MD5

b14b40af5402882e3b3d9b01d762da18
SHA1

41b26d07692274ed468aa4d3824590d23b0c8b12
SHA256

570aeb950430c19f3ab771889813253f2fa3e78dc55fecd1222ec816712dbd9c
SHA512

eeee4e9859680ffc1f5131304563ea937a8d450c46118c5bdd2b2f440e77f05df203ff0beb8bb8004deef6cf99307de88554cf594ea02397c91bbc6f0a90f864
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiA0jgg18uuuW:btB9g/WItCSsAGjX7e9NABW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320a-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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-19_b14b40af5402882e3b3d9b01d762da18_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
3760	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 3500 wrote to memory of 3760	3500	2024-02-19_b14b40af5402882e3b3d9b01d762da18_cryptolocker.exe	84
PID 3500 wrote to memory of 3760	3500	2024-02-19_b14b40af5402882e3b3d9b01d762da18_cryptolocker.exe	84
PID 3500 wrote to memory of 3760	3500	2024-02-19_b14b40af5402882e3b3d9b01d762da18_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_b14b40af5402882e3b3d9b01d762da18_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_b14b40af5402882e3b3d9b01d762da18_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3500
- 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:3760

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
4afb7d39c50cd24ba0b72ec5f773e5a7

SHA1
cf8cc99c22f1b7cefd3a206d25e5d4fd41dceb62

SHA256
c42c8b715038fa4ed448434f4d9c14d169d0d0398185c1b52d97bf65c7c47613

SHA512
93a4e4abea53f6c570dfb374a30b333181c4eb87bc43932efe1d429d287671493a5ac48315c1c6d394357155e49286f08a133c9077bd62d95b866497ce75ace9

Download Submit
memory/3500-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3500-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3500-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3760-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download