4b2bd1fde41b8f3178f874853bd08a949b858d97c6df2bd1587a0c8e65b42827

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/02/2024, 19:22

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General

Target

2024-02-12_25215e211c833719bd917b118c5e5c3a_cryptolocker.exe
Size

83KB
MD5

25215e211c833719bd917b118c5e5c3a
SHA1

11258a1cd600f3dfcf01f12592cf38d788eb651e
SHA256

4b2bd1fde41b8f3178f874853bd08a949b858d97c6df2bd1587a0c8e65b42827
SHA512

e457394e2c70f4e943d8333ea6e015073483be6180149621c8ba7c9509411a7e3462963cb958bc1a613d12fcdc0e45d68a501e3f66c1a8a55ef60570721a4c5f
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNlVSLQK:V6a+pOtEvwDpjvpM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023172-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023172-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-02-12_25215e211c833719bd917b118c5e5c3a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2708	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 2420 wrote to memory of 2708	2420	2024-02-12_25215e211c833719bd917b118c5e5c3a_cryptolocker.exe	85
PID 2420 wrote to memory of 2708	2420	2024-02-12_25215e211c833719bd917b118c5e5c3a_cryptolocker.exe	85
PID 2420 wrote to memory of 2708	2420	2024-02-12_25215e211c833719bd917b118c5e5c3a_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-12_25215e211c833719bd917b118c5e5c3a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_25215e211c833719bd917b118c5e5c3a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2708

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
2d668f4782104a7a235e794d83456ffe

SHA1
c0f6cefd8ca57bbc771220e87905f381329b83e6

SHA256
a60cb62befe4be24d7194385ce5a66257a948d08eaf4b7c0acee1751cf6f1e45

SHA512
e98aa15d69a24f64e16c8fbefe69dbd2a5c9d2b0ff03676ee645981a254fe614d407c58283ec9b2fadd20d58788513df583a0e228f889ea5dc69e912ecb418e9

Download Submit
memory/2420-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2420-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2420-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/2708-17-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/2708-19-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download