63ed2aaa90a1ed308a83064a3e91340a78feca23d3d971112a68f8041a8d114a

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
05-05-2024 08:35

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General

Target

2024-05-05_a3073b1436e148d9cb8e336976efb304_cryptolocker.exe
Size

79KB
MD5

a3073b1436e148d9cb8e336976efb304
SHA1

0bf92921d0bfa4a19709f1b4e8661be2ad8f78e6
SHA256

63ed2aaa90a1ed308a83064a3e91340a78feca23d3d971112a68f8041a8d114a
SHA512

e4d68eed4f6ab22439bb1c95917b289a3756931f660ee5f2760b61a569529250ffda97ccc54565df6c4058f5e181c079376e807f67afefe8a4ee8f5737007a5d
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNluiCx:V6a+pOtEvwDpjvpq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b3d-11.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b3d-11.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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-05-05_a3073b1436e148d9cb8e336976efb304_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
700	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 4760 wrote to memory of 700	4760	2024-05-05_a3073b1436e148d9cb8e336976efb304_cryptolocker.exe	83
PID 4760 wrote to memory of 700	4760	2024-05-05_a3073b1436e148d9cb8e336976efb304_cryptolocker.exe	83
PID 4760 wrote to memory of 700	4760	2024-05-05_a3073b1436e148d9cb8e336976efb304_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-05_a3073b1436e148d9cb8e336976efb304_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-05_a3073b1436e148d9cb8e336976efb304_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:700

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
79KB

MD5
31a740c7dce309118765df4edfb208a2

SHA1
612664b5e9310a4dc24b783529cd0b8297fee4f7

SHA256
3b3a544ae185da9b11062e7be8f324de073c2428907a35a79bb6060950be25ba

SHA512
2c77df2b62c93bed45c8c2c2198493173332c848824466698208dd37da0035f20f3f020b986f5d1a6b5c83a44c39182369da0a1049027b395fa708bcb389ce05

Download Submit
memory/4760-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4760-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4760-8-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download