29f91a377a9cf3e2627172813d38f71474f5680e8fa1262e83b9ae8b28d44b66

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
08/05/2024, 03:26

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General

Target

2024-05-08_2581d254d8a134113fccebd1c114ec0d_cryptolocker.exe
Size

93KB
MD5

2581d254d8a134113fccebd1c114ec0d
SHA1

fadbb95eaade8a401373776b42bf1331f0aef053
SHA256

29f91a377a9cf3e2627172813d38f71474f5680e8fa1262e83b9ae8b28d44b66
SHA512

1bc85f05f369ee3616520b8e47d021cd436be13391db242c304f7420892ddf1768f6c1c035fbeee838338af9bbe56e3bb31ddff3f4edc2298253c97185f0afa2
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMgNZt:V6a+pOtEvwDpjtzd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023b89-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023b89-12.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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-05-08_2581d254d8a134113fccebd1c114ec0d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
436	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 4040 wrote to memory of 436	4040	2024-05-08_2581d254d8a134113fccebd1c114ec0d_cryptolocker.exe	83
PID 4040 wrote to memory of 436	4040	2024-05-08_2581d254d8a134113fccebd1c114ec0d_cryptolocker.exe	83
PID 4040 wrote to memory of 436	4040	2024-05-08_2581d254d8a134113fccebd1c114ec0d_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-08_2581d254d8a134113fccebd1c114ec0d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-08_2581d254d8a134113fccebd1c114ec0d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4040
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:436

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
93KB

MD5
92580d336c7435b6033040135c69ed32

SHA1
253f588b477940cca131da6246bf4fc69470a765

SHA256
0fc3373817e620fe12ed829452af6d52a35df4b59c05b6de9084b8ff59500b1b

SHA512
046e328589445c875cc5ac8e27d9cae9849d25243b12eef462080212a530adc45b90a343da167e7149f995c6483dbdc4773679d46eef7f92e61df9648521e7e4

Download Submit
memory/436-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/436-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4040-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4040-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4040-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download