588b27ea79d8d6684c3a173a30e3f4aa2deb3a6f1a0fbc99de8e882e2983eaec

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 20:23

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General

Target

2024-02-21_0a63126f4b33c726c34bc5cbfc756420_cryptolocker.exe
Size

32KB
MD5

0a63126f4b33c726c34bc5cbfc756420
SHA1

97f6a6784fc2782fd7b16ff42a39b84d93022e3c
SHA256

588b27ea79d8d6684c3a173a30e3f4aa2deb3a6f1a0fbc99de8e882e2983eaec
SHA512

9cc7cc8268fd2769d2bd581783362cdb1bda8c51c8ec473f7ea474dc57f23307055b32a696752d962b4bfd847e03ce6329dc367e647665b341559840243ea1ab
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B+1MI:b7o/2n1TCraU6GD1a4Xt9g

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023228-12.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-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation	2024-02-21_0a63126f4b33c726c34bc5cbfc756420_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2648	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 372 wrote to memory of 2648	372	2024-02-21_0a63126f4b33c726c34bc5cbfc756420_cryptolocker.exe	84
PID 372 wrote to memory of 2648	372	2024-02-21_0a63126f4b33c726c34bc5cbfc756420_cryptolocker.exe	84
PID 372 wrote to memory of 2648	372	2024-02-21_0a63126f4b33c726c34bc5cbfc756420_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-21_0a63126f4b33c726c34bc5cbfc756420_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_0a63126f4b33c726c34bc5cbfc756420_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:372
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2648

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
1a90dae58302166e4a5b57e8272eb4b3

SHA1
68e16ab85f03e9baa5c568116057aa039030912d

SHA256
c871dc510e06faa5eb242e772ef3eea5f7885ff999b56f16354b9a94bf4bb054

SHA512
4b2fa3b82aad7341f331f1e1c7664198b059e805e999d51fd2691bea6e2455d8600177f5c2f0ee4e804ae4a4b3ce75fd2982d4eff4a87530de60ae70e59f549c

Download Submit
memory/372-0-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/372-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/372-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2648-20-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download