604e68a3ee5bcf009897252bd0a4546203423310a32107f8782f70886b89650a

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
28/05/2024, 17:33

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General

Target

2024-05-28_bdd73ec7cc4c096c5f4fadda732cbd0b_cryptolocker.exe
Size

38KB
MD5

bdd73ec7cc4c096c5f4fadda732cbd0b
SHA1

7551f1d8d21743d64d6837947a20f714a63259bb
SHA256

604e68a3ee5bcf009897252bd0a4546203423310a32107f8782f70886b89650a
SHA512

753f13981461e43f34e59a2c812da5b6f93f1051b5a4c69a9147082bcd26cfc9ea8b71017bf9345eeed5e943baa92e4372df185cf1457afc5f5547222adbad0f
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mzH:bc/y2lLRU6zA6qzH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00050000000232a4-12.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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-05-28_bdd73ec7cc4c096c5f4fadda732cbd0b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1868	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 2772 wrote to memory of 1868	2772	2024-05-28_bdd73ec7cc4c096c5f4fadda732cbd0b_cryptolocker.exe	84
PID 2772 wrote to memory of 1868	2772	2024-05-28_bdd73ec7cc4c096c5f4fadda732cbd0b_cryptolocker.exe	84
PID 2772 wrote to memory of 1868	2772	2024-05-28_bdd73ec7cc4c096c5f4fadda732cbd0b_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-28_bdd73ec7cc4c096c5f4fadda732cbd0b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_bdd73ec7cc4c096c5f4fadda732cbd0b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1868

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
38KB

MD5
f749fc33b173a4007cc245dd29b351e0

SHA1
61348663b8162057ce83f248c9ae0957204cd6ab

SHA256
bd492e6fdffce867688ad3d5dfc44b6a41ba8b456f97a7954f8857ad0493428f

SHA512
9223c513fbc33e60df9c708253eebde61031d52b166641cc2da3f5c94e1bf7f99696980cbee37905548480ce7d5a3a0ae231b046655c5750b740f80c46929484

Download Submit
memory/1868-25-0x00000000020B0000-0x00000000020B6000-memory.dmp

Filesize
24KB

Download
memory/2772-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2772-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2772-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download