a37f93d8194ad80c0753d13418202414039f365b6b43d8eadfd871b2a8f3635f

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/09/2024, 12:26

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General

Target

2024-09-05_18734cfda423f0725bad0e296d986c1c_cryptolocker.exe
Size

46KB
MD5

18734cfda423f0725bad0e296d986c1c
SHA1

18b533d42f4c85bb80d29435304958cceb1c24af
SHA256

a37f93d8194ad80c0753d13418202414039f365b6b43d8eadfd871b2a8f3635f
SHA512

209dbe6a1d6e19f7b13ea4e3529f50a9bf42749a1558be8f66e0ca350abce1e0129d7eaa2894abbf70e8438ff39a63d6158cb24a57a171b3656378443cccf680
SSDEEP

768:bao/2n1TCraU6GD1a4X1XOQ69zbjlAAX5e9zA:bF/y2lFizbR9XwzA

Score

7^/10

discovery

Malware Config

Signatures

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	2024-09-05_18734cfda423f0725bad0e296d986c1c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5064	rewok.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-05_18734cfda423f0725bad0e296d986c1c_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 5064	4960	2024-09-05_18734cfda423f0725bad0e296d986c1c_cryptolocker.exe	85
PID 4960 wrote to memory of 5064	4960	2024-09-05_18734cfda423f0725bad0e296d986c1c_cryptolocker.exe	85
PID 4960 wrote to memory of 5064	4960	2024-09-05_18734cfda423f0725bad0e296d986c1c_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-05_18734cfda423f0725bad0e296d986c1c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_18734cfda423f0725bad0e296d986c1c_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:5064

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
46KB

MD5
b270d461b3a6e40687d078c88063ef2f

SHA1
a02046ef76fcd1d32139ce0a7b453a9f01dbeb1d

SHA256
b22a391d78e1f52d8e3517b7fbdfbdd0cfd0ac841791f5830b7dcee048b72697

SHA512
108fccfa7b80e8e579d613bcf755b102123cd88967404fde007326b660e5cb5c004b072dd3a48b66c2ef6f84635c4f42c45ab4ce892bcfc17b4e582ae6d9d3d3

Download Submit
memory/4960-0-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4960-1-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4960-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5064-19-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download