522b7d5cf67e7f8994118c269c035b35d7d2cb4d2ce95d135be7c149776ed7d9

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 07:56

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General

Target

2024-02-13_8540abb9a040a0a74b083e081b72f7d6_cryptolocker.exe
Size

32KB
MD5

8540abb9a040a0a74b083e081b72f7d6
SHA1

6296ecb5df9734f1c3575b7387802022ea659519
SHA256

522b7d5cf67e7f8994118c269c035b35d7d2cb4d2ce95d135be7c149776ed7d9
SHA512

c24dd1b0e26ac7bb1bb5a1c0d38e95f8da7ebf7e3d4eca8ff23e7a4703a19cd4577173bb7cb7606c4204e2708ab0304e3be1b158a2158b554c371e95cdc13bea
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qbSL:b7o/2n1TCraU6GD1a4Xt9bRU62L

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023202-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-13_8540abb9a040a0a74b083e081b72f7d6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1092	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 1156 wrote to memory of 1092	1156	2024-02-13_8540abb9a040a0a74b083e081b72f7d6_cryptolocker.exe	85
PID 1156 wrote to memory of 1092	1156	2024-02-13_8540abb9a040a0a74b083e081b72f7d6_cryptolocker.exe	85
PID 1156 wrote to memory of 1092	1156	2024-02-13_8540abb9a040a0a74b083e081b72f7d6_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-13_8540abb9a040a0a74b083e081b72f7d6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_8540abb9a040a0a74b083e081b72f7d6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1156
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1092

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
32KB

MD5
f67a8205a17075d18a16f6248835c821

SHA1
e5bd87a6f9a781c562229cec2efbe1f34af7449f

SHA256
0ecdfc0da566290a52e7ba81fa1402b4de472bfb8e761f7e2a3b58f6527dc709

SHA512
c8e1cfa97226ce435a429bfc3082d5a26eb2f8ca9fc3bd117c30f70ea61774e3e51270644e462fcd5bfe934c75a2b3e6cd59dce5b92468af0dc073c9e42e868f

Download Submit
memory/1092-21-0x0000000001FA0000-0x0000000001FA6000-memory.dmp

Filesize
24KB

Download
memory/1156-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/1156-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1156-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download