960e7dccb75cf125de772590900be6127e76d230b288c1d97cd1e77ea65ac781

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2024, 06:22

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General

Target

2024-10-03_02c2a5dc6b25c3e16a87b883ef1d3d8a_cryptolocker.exe
Size

54KB
MD5

02c2a5dc6b25c3e16a87b883ef1d3d8a
SHA1

2df8063e7af27ed92638a443c8818aab415c5603
SHA256

960e7dccb75cf125de772590900be6127e76d230b288c1d97cd1e77ea65ac781
SHA512

d1f024ce95c2885a37eac51adba7be4bef91a2351963a744b4fcdfad1836b167b990488dfbd5e383358e31e4b1a4c97378c27ada786152b2447b112271fd9c86
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFPD:b7/y28wZEjbnouy8G76iH/NLp5

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	2024-10-03_02c2a5dc6b25c3e16a87b883ef1d3d8a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2860	rewok.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4124-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x0009000000023458-13.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	2024-10-03_02c2a5dc6b25c3e16a87b883ef1d3d8a_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 4124 wrote to memory of 2860	4124	2024-10-03_02c2a5dc6b25c3e16a87b883ef1d3d8a_cryptolocker.exe	83
PID 4124 wrote to memory of 2860	4124	2024-10-03_02c2a5dc6b25c3e16a87b883ef1d3d8a_cryptolocker.exe	83
PID 4124 wrote to memory of 2860	4124	2024-10-03_02c2a5dc6b25c3e16a87b883ef1d3d8a_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-10-03_02c2a5dc6b25c3e16a87b883ef1d3d8a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-03_02c2a5dc6b25c3e16a87b883ef1d3d8a_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4124
- 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:2860

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

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Downloads

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

Filesize
55KB

MD5
555cee08a665e56b6421870955ca7baf

SHA1
9d29471989dd537ab82fd98a183c46cab78b78a0

SHA256
c0723d3e667d15b4d7e72662f748d1b132b69c92efa1e7263b110abf9eeedb02

SHA512
eb2f8af763036588d773270f6eb8dcdebe9d6b7a36a8784aeff3d8b5775b2481ceb47db4490dfe4c241e220bea080253d5265000f57c68804e5e3eb6cdbed46c

Download Submit
memory/2860-26-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/4124-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4124-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4124-2-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4124-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download