04691a9de01210a6b1559ebf6083f23a4581218f4c31a8a45e77ab54d4793a68

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 18:43

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General

Target

2024-05-21_9491d7d55e1552c74695ee8a6261cc39_cryptolocker.exe
Size

50KB
MD5

9491d7d55e1552c74695ee8a6261cc39
SHA1

150764d6bb21ab634cc5ceb525e37646aad4b1c7
SHA256

04691a9de01210a6b1559ebf6083f23a4581218f4c31a8a45e77ab54d4793a68
SHA512

8c1ac708f83a88e46409139d3b30253b7b9226038702f71ee719724d9060222a83dd231611de5946edf1104e7b74360a4ad8c023eb9eb9d8ebeef997c009add1
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZUD:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLqD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002326e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002326e-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	2024-05-21_9491d7d55e1552c74695ee8a6261cc39_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5016	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 4984 wrote to memory of 5016	4984	2024-05-21_9491d7d55e1552c74695ee8a6261cc39_cryptolocker.exe	82
PID 4984 wrote to memory of 5016	4984	2024-05-21_9491d7d55e1552c74695ee8a6261cc39_cryptolocker.exe	82
PID 4984 wrote to memory of 5016	4984	2024-05-21_9491d7d55e1552c74695ee8a6261cc39_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-21_9491d7d55e1552c74695ee8a6261cc39_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_9491d7d55e1552c74695ee8a6261cc39_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4984
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5016

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
51KB

MD5
73f1e5860f09722c23560544bdb746f1

SHA1
026faff954a9063fd678ca3272a3360c2749b6db

SHA256
8a61b6746bfb682aa31bef013e16a192cf11e5d4180cc778dfa029c88614a486

SHA512
56d5ecf6d865f63191a4f033ada8403d5f2ddb5741d7d16cd6d2e3673986404188d77886da3463946a4046714f6557306a6b9a9e55174a2279ef4fb2665c423d

Download Submit
memory/4984-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4984-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4984-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/5016-17-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/5016-18-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download