70a48c44636e1277ea62293f31a2ee6e6f79d8cfe0bce9f080186a359e1ccfdc

Analysis

max time kernel
150s
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 08:23

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General

Target

2024-02-19_0ca7f1028db436a98c4836822123539d_cryptolocker.exe
Size

40KB
MD5

0ca7f1028db436a98c4836822123539d
SHA1

d3ca9f09855a2c82549efa6d7a1ed9111b520b13
SHA256

70a48c44636e1277ea62293f31a2ee6e6f79d8cfe0bce9f080186a359e1ccfdc
SHA512

dd4571ca160c46f703630af11272cc85ada549121a68bc7e415c7ae389d973611b6b5c9162cf732f132d8e11a3eb75cb296859af9a70f3d14272d7feb22a714b
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMvcWR:bc/y2lkF0+B2b

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023218-12.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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-19_0ca7f1028db436a98c4836822123539d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3860	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 4828 wrote to memory of 3860	4828	2024-02-19_0ca7f1028db436a98c4836822123539d_cryptolocker.exe	84
PID 4828 wrote to memory of 3860	4828	2024-02-19_0ca7f1028db436a98c4836822123539d_cryptolocker.exe	84
PID 4828 wrote to memory of 3860	4828	2024-02-19_0ca7f1028db436a98c4836822123539d_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_0ca7f1028db436a98c4836822123539d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_0ca7f1028db436a98c4836822123539d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4828
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3860

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
40KB

MD5
f96e6a68ce4eae7eb395c3ba0faf66fa

SHA1
e40c7c26ce768a77b552775bf05a58bc40c040fc

SHA256
701bd3ac290ca90e996dd6bc71c725eafed70e0e1fc287a644a18e2a928dd657

SHA512
b70b72126c53503ab25a0202b77f9f8150be7dacb9344160404095b3d74c348a1071e1b5d32ccde0b64449aa417b579b70058723e75f06acb23a640b2601cf46

Download Submit
memory/3860-20-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/4828-0-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4828-1-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4828-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download