e82f015d9c72806bfe9ea17dd380078571c3faf72977e6e6974f8314e205fcdd

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
19/05/2024, 22:33

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General

Target

2024-05-19_f38f89d12847d1b34bff8d82f15ada4e_cryptolocker.exe
Size

55KB
MD5

f38f89d12847d1b34bff8d82f15ada4e
SHA1

722544c3b2e37689467d0e13407e341e8e0ae144
SHA256

e82f015d9c72806bfe9ea17dd380078571c3faf72977e6e6974f8314e205fcdd
SHA512

0a6ce13950d46337817f9e2cb7f0fcdceced97afcf8f9b87c67b404d2f495e073a74f69317193695744854ee0573958d5220b5111154dbc4c1edebef824328d3
SSDEEP

768:b7o/2n1TCraU6GD1a4Xcn62tH/1/Lp17zJIfeVEuUr61q:bc/y2lm6iH/NLp17zrV9u

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002327d-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-19_f38f89d12847d1b34bff8d82f15ada4e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
972	rewok.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 2208 wrote to memory of 972	2208	2024-05-19_f38f89d12847d1b34bff8d82f15ada4e_cryptolocker.exe	83
PID 2208 wrote to memory of 972	2208	2024-05-19_f38f89d12847d1b34bff8d82f15ada4e_cryptolocker.exe	83
PID 2208 wrote to memory of 972	2208	2024-05-19_f38f89d12847d1b34bff8d82f15ada4e_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-19_f38f89d12847d1b34bff8d82f15ada4e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-19_f38f89d12847d1b34bff8d82f15ada4e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:972

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\rewok.exe

Filesize
55KB

MD5
9ee979d59630c1b56a11b4ce176623aa

SHA1
4ba6b329996637b9efc52e10e5a73789b1c05e69

SHA256
5f593fc0bcea8efa21b588afe3dafcf3ddc3a224920956af2962e5bfa96343f5

SHA512
ec2f2297fd90841912fc500b20234fb3b7fe0b58b7f2c2143aa1b365976bfaf5fc7b91db55ff11380384e87077be79a119e4c1caffd44a0d92bc277dbab94ec7

Download Submit
memory/972-25-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/2208-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2208-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2208-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download