018604bd656297101c57401880fc21b1fa880e76a8e4b40d6e6e17f174d56f16

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
23/01/2024, 00:34

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General

Target

2024-01-23_b7078eef4b518f16c571f2a16526102d_cryptolocker.exe
Size

41KB
MD5

b7078eef4b518f16c571f2a16526102d
SHA1

a9a1ee0731de1dea49ba090dacf02ead3f586cf3
SHA256

018604bd656297101c57401880fc21b1fa880e76a8e4b40d6e6e17f174d56f16
SHA512

a82b9282f4f9bd86659434a156b71924df461ece1a3e1530b5b42e0ba716939128090621feb1eef6e872600761578ac0220e42dd0e8423b551653ec47404ce87
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMvcWH:bc/y2lkF0+B2d

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023224-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-23_b7078eef4b518f16c571f2a16526102d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2364	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 5040 wrote to memory of 2364	5040	2024-01-23_b7078eef4b518f16c571f2a16526102d_cryptolocker.exe	87
PID 5040 wrote to memory of 2364	5040	2024-01-23_b7078eef4b518f16c571f2a16526102d_cryptolocker.exe	87
PID 5040 wrote to memory of 2364	5040	2024-01-23_b7078eef4b518f16c571f2a16526102d_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-23_b7078eef4b518f16c571f2a16526102d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_b7078eef4b518f16c571f2a16526102d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2364

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
41KB

MD5
1bda938520242cd51e20d40dd52b412c

SHA1
f35f4089ef8587389dd3c8c8308ec7410a738c7e

SHA256
c2bbf5de6c00e5f40bf76d611b3f560eb984974eed5f213912c911a98181ca27

SHA512
84a3cdb174fe7c20b4b221f22552736812e8f40891d0d53a2161d587735fe096874228d5895d6f0cffb51d45e92108d9c2c995a0409f664d87bc239a206131b4

Download Submit
memory/2364-22-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/5040-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/5040-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/5040-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download