e4414c4a0f84283b4ce2e85b6e7485ee68f38eb6308068bd4c31471930a64b5a

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 03:26

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General

Target

2024-03-27_09608ccfd15b8c7e71204b441e4ec459_cryptolocker.exe
Size

43KB
MD5

09608ccfd15b8c7e71204b441e4ec459
SHA1

d61a213223064383d857fc119d6e9e96c800d989
SHA256

e4414c4a0f84283b4ce2e85b6e7485ee68f38eb6308068bd4c31471930a64b5a
SHA512

4fe08aaebfb6c70d6458917fe28cb843fe9056e2b4407633886926bbeff1eeaf24e4c775d5eff92d36d482b317339dd6f70fc374d19a7ed4e31034a58c50cde9
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqrwGuj5:bc/y2lkF0+Bjrdut

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002320b-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-27_09608ccfd15b8c7e71204b441e4ec459_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3532	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 4832 wrote to memory of 3532	4832	2024-03-27_09608ccfd15b8c7e71204b441e4ec459_cryptolocker.exe	89
PID 4832 wrote to memory of 3532	4832	2024-03-27_09608ccfd15b8c7e71204b441e4ec459_cryptolocker.exe	89
PID 4832 wrote to memory of 3532	4832	2024-03-27_09608ccfd15b8c7e71204b441e4ec459_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-27_09608ccfd15b8c7e71204b441e4ec459_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_09608ccfd15b8c7e71204b441e4ec459_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3532

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
4eac0b4f9d7ead749b621a6a0e3444cb

SHA1
7683bc5fe439b1a0044c8609b4a0bae55d215580

SHA256
728a75e8ac3cf4a9711512ffd75f9b51e8a8fd882adbbd020bdc1defcfba8fc0

SHA512
a0c9837667b36ce6e27a06a249afc2fa76e942a69708a5266404ab4a13fe2338177bdb1ead0570f9b42f1852a0bed9164b70cf024755e3a60f8a0f051ee387fb

Download Submit
memory/3532-21-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4832-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4832-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4832-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download