2eb6627ff0b9aba31c77e62d58f15744fe23578b10ef13efdda8c8395e7f852c

Analysis

max time kernel
142s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 14:54

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General

Target

2024-02-18_f4917d6e986bb9cb7bd39c2c0b92dcc6_cryptolocker.exe
Size

54KB
MD5

f4917d6e986bb9cb7bd39c2c0b92dcc6
SHA1

915b3e91c773777690c3be944fa7fbeb0921a8aa
SHA256

2eb6627ff0b9aba31c77e62d58f15744fe23578b10ef13efdda8c8395e7f852c
SHA512

81be055b1cfdb31bfbcf2d9fc6a3b4b28dae78f16652f95cea29f115d1588c0c22269ff7169786e474bec21d3ba74af85cd8a838c26e9910604a853f0e6b13b4
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccCGXlDd5:V6a+pOtEvwDpjvDN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f8-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f8-12.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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-18_f4917d6e986bb9cb7bd39c2c0b92dcc6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1016	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 636 wrote to memory of 1016	636	2024-02-18_f4917d6e986bb9cb7bd39c2c0b92dcc6_cryptolocker.exe	83
PID 636 wrote to memory of 1016	636	2024-02-18_f4917d6e986bb9cb7bd39c2c0b92dcc6_cryptolocker.exe	83
PID 636 wrote to memory of 1016	636	2024-02-18_f4917d6e986bb9cb7bd39c2c0b92dcc6_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-18_f4917d6e986bb9cb7bd39c2c0b92dcc6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_f4917d6e986bb9cb7bd39c2c0b92dcc6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:636
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1016

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
54KB

MD5
eb4676c55b77ed8e2e4e962ae6731058

SHA1
e1358be7a23ee136e81e681426edd8c0e8ccbbce

SHA256
922bb8d3463effaac35a3b3373b08c2e1b8667c17df4cee7aaab3328c442231f

SHA512
881f9536c7c06cef6a23d97919a5d9a7e4ba368c75610092475f82bfcbd40d7eec8ac18f214a5cc99645e3b98afd4eef8a2877360dee0f3780381a64975ffa20

Download Submit
memory/636-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/636-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/636-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1016-18-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1016-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download