c79bc5bbc85c58df4e10ddf62f32551070e9468c6b3afb2fa5eee1c35c818396

Analysis

max time kernel
150s
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
11/06/2024, 08:43

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General

Target

2024-06-11_c3b46045172f98d707cfde7a4c3ea865_cryptolocker.exe
Size

54KB
MD5

c3b46045172f98d707cfde7a4c3ea865
SHA1

5057a9d561fe5e7230f310cf0ca1f3180309f160
SHA256

c79bc5bbc85c58df4e10ddf62f32551070e9468c6b3afb2fa5eee1c35c818396
SHA512

7552717921c982b638ad29a8997f6f0c05d3df9c4eb38a86645a557441dd8bd36f642e633ac85ab07eda6983758d235fe69c7712c728b42ee33847f941ccdc98
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcaTIG:X6QFElP6n+gJBMOtEvwDpjBtExmlB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002326f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002326f-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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-06-11_c3b46045172f98d707cfde7a4c3ea865_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4696	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 4508 wrote to memory of 4696	4508	2024-06-11_c3b46045172f98d707cfde7a4c3ea865_cryptolocker.exe	80
PID 4508 wrote to memory of 4696	4508	2024-06-11_c3b46045172f98d707cfde7a4c3ea865_cryptolocker.exe	80
PID 4508 wrote to memory of 4696	4508	2024-06-11_c3b46045172f98d707cfde7a4c3ea865_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-06-11_c3b46045172f98d707cfde7a4c3ea865_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_c3b46045172f98d707cfde7a4c3ea865_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4696

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
d534346c307ffa9e26e2097b795e5f8f

SHA1
ef26caa359e46101bb304e688f80ac58b76e2749

SHA256
d3443e9bffc1bed4fa044e21dc5aa2c65bd91f1142a8eca40dbb4c74e6d2040d

SHA512
33a1b9add7baabe79579b6d8f89e3c49e6c8df35574fbdab3a56c747f00fac39e7aba71fef7a1127a27b330e82e5238aaea26ec52bd6a8498da2d7868f9c35d6

Download Submit
memory/4508-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4508-1-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4508-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4696-17-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4696-23-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download