636a5b4dfa8d48a06b1e33e4de4b552ccbe12d0658777549267416701edc121d

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 20:05

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General

Target

2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe
Size

83KB
MD5

d5e732b50ec7990179d597892adaa73a
SHA1

cf85d29a36b9d34ecf01fcb2c55812b9c8f293de
SHA256

636a5b4dfa8d48a06b1e33e4de4b552ccbe12d0658777549267416701edc121d
SHA512

aadf4bdbcbc901622a2c8607b276f8cca2241841e19c2bbd5c69da61cdbb40d88fcf207f93e147f61761cef09c7d8d9fa9a9a2de1406b485909a4a75d8e1d15b
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnJ:V6QFElP6n+gMQMOtEvwDpjyaLccVNlP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000001e5ba-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000001e5ba-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-1-5-21-3054445511-921769590-4013668107-1000\Control Panel\International\Geo\Nation	2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4480	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 4728 wrote to memory of 4480	4728	2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe	90
PID 4728 wrote to memory of 4480	4728	2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe	90
PID 4728 wrote to memory of 4480	4728	2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4728
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4480

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
83KB

MD5
25c552d7241a0687a5578a34de54c1f4

SHA1
3711c17bab505cd66bd7583c21245be3921869fb

SHA256
829264e0f38495ded80d25ddf4b1ca7114e2e276b3ec0ff79e33cec5e6237384

SHA512
fe9499f6f92001da8192cde93ddaaf41c203ffe221d6ff4fd1bf01b77d6c6e629a4166e1f9cace611de559a549b6711f597ec8f1edea569b673493cb192fce01

Download Submit
memory/4480-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4480-19-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4728-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4728-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4728-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download