4f014d528b56d1ebe19eec320ec3a140dca76c14ec1878154e3aeb2913aa8038

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 05:44

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General

Target

2024-04-20_ca34894e06b4ad6dc2f9f930f96002dc_cryptolocker.exe
Size

61KB
MD5

ca34894e06b4ad6dc2f9f930f96002dc
SHA1

a85a45e60ca280c9e3e961163fb1424b120120c0
SHA256

4f014d528b56d1ebe19eec320ec3a140dca76c14ec1878154e3aeb2913aa8038
SHA512

499cf4dd4b98ce42839f8d4410100a90ab8c1a91067cd4009159b0e4ff7ee4ec6d550157c6f687e0e604f66a2d430baca64402200c3dd21beb8e976bf9622148
SSDEEP

1536:ZzFbxmLPWQMOtEvwDpj38lD/cMAT+l/Nex4:ZVxkGOtEvwDpjo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_rule2

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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-20_ca34894e06b4ad6dc2f9f930f96002dc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
440	misid.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 4376 wrote to memory of 440	4376	2024-04-20_ca34894e06b4ad6dc2f9f930f96002dc_cryptolocker.exe	85
PID 4376 wrote to memory of 440	4376	2024-04-20_ca34894e06b4ad6dc2f9f930f96002dc_cryptolocker.exe	85
PID 4376 wrote to memory of 440	4376	2024-04-20_ca34894e06b4ad6dc2f9f930f96002dc_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-20_ca34894e06b4ad6dc2f9f930f96002dc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_ca34894e06b4ad6dc2f9f930f96002dc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:440

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\misid.exe

Filesize
61KB

MD5
43a9d0cf83f63895fe868529ca6347d9

SHA1
8d70224a8aaf0275a5b5119194ab2c5630836a21

SHA256
b590e9465ce57d09ff8e19f1ec5ea8cf145b08ac435629f3b7499ce4c8efc587

SHA512
c96d25aa441075a35373519ad3981825bfd59288cb385094966cb46988756df1fc2b2f1893266cadaceed34cfc060976e201acde62962f0d910b9db20c3a9948

Download Submit
memory/440-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/440-20-0x0000000000440000-0x0000000000480000-memory.dmp

Filesize
256KB

Download
memory/440-26-0x0000000000440000-0x0000000000480000-memory.dmp

Filesize
256KB

Download
memory/4376-0-0x0000000000480000-0x0000000000483000-memory.dmp

Filesize
12KB

Download
memory/4376-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4376-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4376-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4376-17-0x0000000000480000-0x0000000000483000-memory.dmp

Filesize
12KB

Download