9b4929cdce64f143e5ede24a23ae400a158d8f23941a3ac1bcf55abee63e4951

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 04:39

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General

Target

2024-06-04_58dbff4b2b500f2da2715f437a70c7d7_cryptolocker.exe
Size

42KB
MD5

58dbff4b2b500f2da2715f437a70c7d7
SHA1

b2c7179428ce4519b425199d1a33c21cdbbe1ac8
SHA256

9b4929cdce64f143e5ede24a23ae400a158d8f23941a3ac1bcf55abee63e4951
SHA512

47875cc748f215aa70b1c489460f5bdb8933d2bcb2747530a5296ef3f92f5285440fa2d9fce554d36bb988040efab2d0f052fff66e271d91c9e4326d07fa0bb0
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCyD/95r:X6QFElP6n+gJQMOtEvwDpjBsYK/fbDFF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-04_58dbff4b2b500f2da2715f437a70c7d7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
836	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 1872 wrote to memory of 836	1872	2024-06-04_58dbff4b2b500f2da2715f437a70c7d7_cryptolocker.exe	82
PID 1872 wrote to memory of 836	1872	2024-06-04_58dbff4b2b500f2da2715f437a70c7d7_cryptolocker.exe	82
PID 1872 wrote to memory of 836	1872	2024-06-04_58dbff4b2b500f2da2715f437a70c7d7_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-04_58dbff4b2b500f2da2715f437a70c7d7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_58dbff4b2b500f2da2715f437a70c7d7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1872
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:836

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
42KB

MD5
26db79ad291a6a72dfff46dedf1be3aa

SHA1
733d80aea9d6c56df496f5686a3fc746c546b474

SHA256
a6427a5b23ae365e478c220c1225eba6d26917dae9a750ab0b162ad5298ac0b2

SHA512
ee73ad9f4f29f668b2c04a0804e4068eea0d780cf21f5c9b1c03f687bff7ab1e013dab491703fe2122c626611133f5987e5ea7ed454eda7df863ee1490ec6757

Download Submit
memory/836-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/836-18-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/1872-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1872-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1872-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download