8944c12a53c1d67faeb1b2dad9c4ce7fc0cd6425d76bfa5befcec573ea631386

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06-03-2024 01:33

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General

Target

2024-03-06_2e3236d951d7426127b044013aa79b7c_cryptolocker.exe
Size

137KB
MD5

2e3236d951d7426127b044013aa79b7c
SHA1

4c3045acb638a35cd73531de9b8f80797eb0fa34
SHA256

8944c12a53c1d67faeb1b2dad9c4ce7fc0cd6425d76bfa5befcec573ea631386
SHA512

cf36c0b23068545ae32de0c01328bf64cefe68766af00e99d67dce0fff17fcd56308ed32c6e6dc7004845aa049909aee310b43e5c8563baad8bd612663ce9679
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwNgpwqWsviy6ixHL:u6a++OtEvwDpj6zQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-06_2e3236d951d7426127b044013aa79b7c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3284	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 3028 wrote to memory of 3284	3028	2024-03-06_2e3236d951d7426127b044013aa79b7c_cryptolocker.exe	89
PID 3028 wrote to memory of 3284	3028	2024-03-06_2e3236d951d7426127b044013aa79b7c_cryptolocker.exe	89
PID 3028 wrote to memory of 3284	3028	2024-03-06_2e3236d951d7426127b044013aa79b7c_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-06_2e3236d951d7426127b044013aa79b7c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_2e3236d951d7426127b044013aa79b7c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3284

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
137KB

MD5
14c3d133cf35d8bd4846db25077b5c54

SHA1
bde4cdec8a4f13288161535600f3ad3032782678

SHA256
9a322693b0bad1b207b504c692f1b94db285bee1c3ab04cb165da1074701ea9c

SHA512
aef93fa6e3b9a1ce2159d0c4bfec97b7b4c6e0de4775b53a503226c6ee6021e9d2ee284ee66d0f8887d51ba388411b36837fd2c5e8202fbe37bc1d0d02d21d45

Download Submit
memory/3028-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3028-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3028-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3284-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3284-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download