6cb228ba7df813145a0f1c4626ac8ce30de70800f8a0d0ecd094a7aae55f09f9

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
29/08/2024, 08:30

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General

Target

2024-08-29_3004a151c11d86657d257ee358faa36e_cryptolocker.exe
Size

54KB
MD5

3004a151c11d86657d257ee358faa36e
SHA1

d104e43764dd851568caf74192353d6bfa99de6a
SHA256

6cb228ba7df813145a0f1c4626ac8ce30de70800f8a0d0ecd094a7aae55f09f9
SHA512

28a2ae9f507f95989b92be72b9b225a3de3e23fb269397f115ffa0bbb4c08beb4791e95c61850e774d6965b13766f867e6204127a44f3f68530a7db484a605f0
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFPQ:b7/y28wZEjbnouy8G76iH/NLp2

Score

7^/10

discovery upx

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	2024-08-29_3004a151c11d86657d257ee358faa36e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3704	rewok.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3608-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x00090000000233e7-13.dat	upx

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	2024-08-29_3004a151c11d86657d257ee358faa36e_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3608 wrote to memory of 3704	3608	2024-08-29_3004a151c11d86657d257ee358faa36e_cryptolocker.exe	85
PID 3608 wrote to memory of 3704	3608	2024-08-29_3004a151c11d86657d257ee358faa36e_cryptolocker.exe	85
PID 3608 wrote to memory of 3704	3608	2024-08-29_3004a151c11d86657d257ee358faa36e_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-08-29_3004a151c11d86657d257ee358faa36e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-29_3004a151c11d86657d257ee358faa36e_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3608
- 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:3704

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
54KB

MD5
9d424ed9dd02b764cd330b6638ae196f

SHA1
cea709534b9800887d0ff6fd5e80f04266ab571d

SHA256
1c1a00e05679da9c2673c98fa275aaa4495364f257de05c869a8e586fcba3872

SHA512
d7c54c5048009ad3aeafe8178258bd8603c8481f6ec27af59286b2c7d5a8c819c1f24ec19cd39bb4eef64317e95313816e939338ba02f34a08d9148a7112dfe4

Download Submit
memory/3608-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3608-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3608-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3608-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3704-26-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download