0a615ddfbb79398c0c6aab65140d21ae483bea6be8dacf549b8e869514cc579f

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28-01-2024 07:31

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General

Target

2024-01-28_64a3844070fdb5057c50da74464890ad_cryptolocker.exe
Size

43KB
MD5

64a3844070fdb5057c50da74464890ad
SHA1

cea3806561b5dc64dfe0eff39b90651bd2b33b8a
SHA256

0a615ddfbb79398c0c6aab65140d21ae483bea6be8dacf549b8e869514cc579f
SHA512

d294899ea8776700fe4b2c3e5106a51543f09d449e688af53c34b11a198b93936e218afc6cfa855132c8fd36c15d3ca8cc6c363e7340b7dd479d98306a76005d
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMpheo:bc/y2lkF0+Bel

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023177-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-28_64a3844070fdb5057c50da74464890ad_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3300	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 5020 wrote to memory of 3300	5020	2024-01-28_64a3844070fdb5057c50da74464890ad_cryptolocker.exe	87
PID 5020 wrote to memory of 3300	5020	2024-01-28_64a3844070fdb5057c50da74464890ad_cryptolocker.exe	87
PID 5020 wrote to memory of 3300	5020	2024-01-28_64a3844070fdb5057c50da74464890ad_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-28_64a3844070fdb5057c50da74464890ad_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_64a3844070fdb5057c50da74464890ad_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5020
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3300

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
578778cefdc9012cb6fdd27af26a2ce2

SHA1
36c216e4e0c14a8ebeab949862a20c146581b380

SHA256
d5851fa1ab4a7a03e3cd7ee3b70c5f65324aaf854c86f110c7babde08c91fde9

SHA512
1498b9544f1ce79662f2cadef53d76c507c8872adfd51bf97ed55141a9208a069a823aac9a87b912469e93810c90980a5ef9a49a005be405787370c979763de5

Download Submit
memory/3300-20-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/5020-0-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/5020-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5020-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download