8386743c8c51fe2aaff0c11bd0b47ee54a42f0e4510e2853f43547f798602077

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30/04/2024, 12:33

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General

Target

2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe
Size

43KB
MD5

30a8b65216b63728f9e97b1a33ecd63d
SHA1

b360b1997ec174eac75cc67b00ebe5461c6f3132
SHA256

8386743c8c51fe2aaff0c11bd0b47ee54a42f0e4510e2853f43547f798602077
SHA512

d786b47c6494cee72829af4256541efed6e110d464ef105b84a80529beb48e88a2e9a3bb8afe95edb2ea92174e87c7e4242372654b9023d3f739532b5a49161f
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqp:bc/y2lkF0+Beqp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023bd2-12.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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1504	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 4396 wrote to memory of 1504	4396	2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe	83
PID 4396 wrote to memory of 1504	4396	2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe	83
PID 4396 wrote to memory of 1504	4396	2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_30a8b65216b63728f9e97b1a33ecd63d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4396
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1504

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
43KB

MD5
93db196f0a1ef1c6f60a3942ebaa6a33

SHA1
ae0d9b9a720ca7229461f79e08d6bea638218635

SHA256
b677485e6c3050f42d815ea23ff89335356c0ec0f0b227084891b8e5b6843200

SHA512
5316f6f71e368f73b44ea9fc5133159bcd33383a008b9187c6646345515dfdccb5348d2600098621e30643e4855eb3e10a1f1f0365cb8333bc587387bb2db82b

Download Submit
memory/1504-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4396-0-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/4396-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4396-8-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download