3130faef8b360eb2f7a387465f8038cc30eaefbd0a868e654b2900b1b61e39af

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28/05/2024, 15:36

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General

Target

2024-05-28_81d81899174c5e9e5ff959ac5fbc1006_cryptolocker.exe
Size

54KB
MD5

81d81899174c5e9e5ff959ac5fbc1006
SHA1

27a02e9db7d794948a893dea3a9b6e4d8be49d2a
SHA256

3130faef8b360eb2f7a387465f8038cc30eaefbd0a868e654b2900b1b61e39af
SHA512

27327b7cd6988f12b7c64606806de39846864d5630feee70074b3afcca398aa4e3a8f2b9c74202ca418ce6c13be0b99484debd309f87f0ac450c030a4ae29041
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcaTI4:X6QFElP6n+gJBMOtEvwDpjBtExmlT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023289-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023289-12.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-28_81d81899174c5e9e5ff959ac5fbc1006_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4664	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 1688 wrote to memory of 4664	1688	2024-05-28_81d81899174c5e9e5ff959ac5fbc1006_cryptolocker.exe	84
PID 1688 wrote to memory of 4664	1688	2024-05-28_81d81899174c5e9e5ff959ac5fbc1006_cryptolocker.exe	84
PID 1688 wrote to memory of 4664	1688	2024-05-28_81d81899174c5e9e5ff959ac5fbc1006_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-28_81d81899174c5e9e5ff959ac5fbc1006_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_81d81899174c5e9e5ff959ac5fbc1006_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4664

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
54KB

MD5
f261000c9cf3c6d5d459dc26ad5af4ce

SHA1
592af5491de7b576a57e22e782410fa9234949dc

SHA256
6977735ee979fdc0c211e33735a11a5a8fc109aefaf144cfee57421061cd847c

SHA512
8f6edb202fbfbb81747a7a217eb27e498609a3e1fe4a328f1af0b3b41494bb0f382d08c136038f1830502e64b7916eb721991c3f65408738e269837157bccb1c

Download Submit
memory/1688-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1688-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1688-8-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4664-23-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4664-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download