4a0d870518bacea1cb1e73759e15eab76b42adae14e3f205f3dccb30fdb6b5c2

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14/05/2024, 17:06

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General

Target

2024-05-14_679ee8d59962521d3f720d8e1fa76ce6_cryptolocker.exe
Size

44KB
MD5

679ee8d59962521d3f720d8e1fa76ce6
SHA1

366bac5a975c44d4c3abfd632bf2e5507cb3d765
SHA256

4a0d870518bacea1cb1e73759e15eab76b42adae14e3f205f3dccb30fdb6b5c2
SHA512

eb07396b558011b81617d555224f24dcdb8965b2619e507e01f978587146eb25a6f67bcfebc1d20abbdd45242ce0277f61fd5cdbde11f90a8ecebc0ec6fcd605
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqo:bc/y2lkF0+Beqo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000022f42-12.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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-14_679ee8d59962521d3f720d8e1fa76ce6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3388	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 4128 wrote to memory of 3388	4128	2024-05-14_679ee8d59962521d3f720d8e1fa76ce6_cryptolocker.exe	81
PID 4128 wrote to memory of 3388	4128	2024-05-14_679ee8d59962521d3f720d8e1fa76ce6_cryptolocker.exe	81
PID 4128 wrote to memory of 3388	4128	2024-05-14_679ee8d59962521d3f720d8e1fa76ce6_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-14_679ee8d59962521d3f720d8e1fa76ce6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_679ee8d59962521d3f720d8e1fa76ce6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4128
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3388

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
44KB

MD5
e310d63e71452a6783ea74a100bb9d9a

SHA1
2fd86152c67d86627e3db3e9d0010d319ec47319

SHA256
b5ceaf57cd6c4349cbf2f671db0f099f6e9d77e9b0fc2282f8997a326c098aed

SHA512
2ada54697032de6515cd172410ac2a89910bd4e5a6b49cbd80465a072b51018e1f75b57f120c2b7fb17d742ffcf27f1261e42ebbe18330673561df241e8beb94

Download Submit
memory/3388-25-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/4128-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4128-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4128-8-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download