98e5961bdcc29753d67eb7f69a1b6de56b78de0025a2152e7d2baab177fc3d6f

Analysis

max time kernel
142s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 16:54

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General

Target

2024-02-21_b8bc225c89be73841012382e3b5effde_cryptolocker.exe
Size

73KB
MD5

b8bc225c89be73841012382e3b5effde
SHA1

2900d4be1cacf057ccdc30c570deed16619d81e4
SHA256

98e5961bdcc29753d67eb7f69a1b6de56b78de0025a2152e7d2baab177fc3d6f
SHA512

5e004523a95946719a59f9db41234b645da9d303e2b8b30d02bc0c428c46d2aa05652d98c7af10263a7405b4166c7e0886d048059b17434f3ee634e65420e780
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1sK:X6a+SOtEvwDpjBZYvQd29

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023129-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023129-12.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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-21_b8bc225c89be73841012382e3b5effde_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2864	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 2832 wrote to memory of 2864	2832	2024-02-21_b8bc225c89be73841012382e3b5effde_cryptolocker.exe	81
PID 2832 wrote to memory of 2864	2832	2024-02-21_b8bc225c89be73841012382e3b5effde_cryptolocker.exe	81
PID 2832 wrote to memory of 2864	2832	2024-02-21_b8bc225c89be73841012382e3b5effde_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-02-21_b8bc225c89be73841012382e3b5effde_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_b8bc225c89be73841012382e3b5effde_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2832
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2864

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
73KB

MD5
be46181037225301ad169341493af2d1

SHA1
72892f4987aeeb00e653748266ee479fa248b893

SHA256
81520fbe959a1864bcbfcdd1f0267aae31fc57fc5d317f6f40288589d0572542

SHA512
1bd19b4f1bf81a31551c6df5af47201d19bdc09d462c3a3c7192ef9fe9f2322ba85a6c3a16e6b69f9bb700afb5961aaf0495b3f308b4580e45cce27baf31a1e6

Download Submit
memory/2832-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/2832-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/2832-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/2864-17-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/2864-18-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download