5c0e3e7cdb4158c01c4296739004a7120d9f5efc1c7b0c1c26666f44c6dbdbae

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13-03-2024 01:49

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-13_a5932b9d0b7213a43c0694c187714b77_cryptolocker.exe
Size

69KB
MD5

a5932b9d0b7213a43c0694c187714b77
SHA1

c0989d243c23363385b5582c24658961f7e2a419
SHA256

5c0e3e7cdb4158c01c4296739004a7120d9f5efc1c7b0c1c26666f44c6dbdbae
SHA512

6ae3378830c0919a0642205973d42fb0cfc125f48dc6b523e9b0544a301b3b491fa2a65628a9542e1759074ff6f1d581bbd5d7e4cc3d2f52d53626e0af683a54
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUsMx:DW60sllyWOtEvwDpjwF85n

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4712-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a00000002320e-13.dat	CryptoLocker_rule2
behavioral2/memory/4972-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4712-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4712-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a00000002320e-13.dat	CryptoLocker_set1
behavioral2/memory/4972-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4712-18-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-13_a5932b9d0b7213a43c0694c187714b77_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4972	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 4712 wrote to memory of 4972	4712	2024-03-13_a5932b9d0b7213a43c0694c187714b77_cryptolocker.exe	91
PID 4712 wrote to memory of 4972	4712	2024-03-13_a5932b9d0b7213a43c0694c187714b77_cryptolocker.exe	91
PID 4712 wrote to memory of 4972	4712	2024-03-13_a5932b9d0b7213a43c0694c187714b77_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-13_a5932b9d0b7213a43c0694c187714b77_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_a5932b9d0b7213a43c0694c187714b77_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4712
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4972

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
69KB

MD5
c5a0dbf3666257e1390a6a4ab17d592e

SHA1
6a7387416dc3adac4711c5bcbeabc3ae421d6b43

SHA256
39da94a51ce6cee81e9810250ff9550a382761934234300e394eb8e032b47076

SHA512
d4149b5e24b04ae33f4e2ddb7f488976db8935481058057e79053dc203bc9440033dfe1ada3e77eb7d67cf51f3ae5b93c99dae87f789e79311a972b1e6b8f2cb

Download Submit
memory/4712-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4712-1-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/4712-2-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/4712-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4712-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4972-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4972-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4972-21-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download