5e385b0ea90dc94c2b06a5d35dc260e6ef50a53724168a716858253daa337157

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 04:43

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General

Target

2024-02-13_559f52e32ecb3189d1349e061449f251_cryptolocker.exe
Size

36KB
MD5

559f52e32ecb3189d1349e061449f251
SHA1

ce16bc16556306a17fd9544a918ddb18a9e7d633
SHA256

5e385b0ea90dc94c2b06a5d35dc260e6ef50a53724168a716858253daa337157
SHA512

3825b1a2ba1d55cc3cff4ac33b83d1d8ce8011b4dd645c1b2f049b4dc6a83a0b3834a4e8ca22383300f5d3bc7be1550d3d8316042f15333682375ced49c40dc5
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBjb1iIJSFlWvm4:X6QFElP6n+gJQMOtEvwDpjBngHna

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023231-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023231-12.dat	CryptoLocker_set1

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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-13_559f52e32ecb3189d1349e061449f251_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1976	asih.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 2264 wrote to memory of 1976	2264	2024-02-13_559f52e32ecb3189d1349e061449f251_cryptolocker.exe	84
PID 2264 wrote to memory of 1976	2264	2024-02-13_559f52e32ecb3189d1349e061449f251_cryptolocker.exe	84
PID 2264 wrote to memory of 1976	2264	2024-02-13_559f52e32ecb3189d1349e061449f251_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-13_559f52e32ecb3189d1349e061449f251_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_559f52e32ecb3189d1349e061449f251_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1976

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\asih.exe

Filesize
36KB

MD5
ea6d5782a51ac826882e064b1d3e1648

SHA1
a193756a9236968857d6dca1f648ea35f7a09edd

SHA256
b1daa8b71a4f3f857f4d924b1a63f3ce6826901cd4e226bd6cc1fa010edeec6e

SHA512
d0c50bba58325de0d7a5b60d7d4089d47944d660d545f4e2a0e1cc6b6bdb5606fd6a7b007b1b953164847db91e3ea15df319745a2f4fbc437a739256c6d482c2

Download Submit
memory/1976-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1976-23-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2264-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/2264-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/2264-2-0x00000000021A0000-0x00000000021A6000-memory.dmp

Filesize
24KB

Download