f4e5e13e0721f554e3e4b053d5019cbf94993cf623d77ba1c4a3f8eb293c6510

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
17/02/2024, 22:00

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General

Target

2024-02-17_d9bacd11d833a5fca4bc808635ececf5_cryptolocker.exe
Size

125KB
MD5

d9bacd11d833a5fca4bc808635ececf5
SHA1

3ae46020e34f5b984fc695b29df1555c0764d3fd
SHA256

f4e5e13e0721f554e3e4b053d5019cbf94993cf623d77ba1c4a3f8eb293c6510
SHA512

b3cf40582bf83585cd43dfc5574dff50493272e895093f10d7880deb23e7e7e783b9dd68b12a676481abb110855fafc66478112bcfa16f6ab926fd801ffe5e18
SSDEEP

1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBpG:vCA9OtEvwDpji

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000230f9-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000230f9-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-17_d9bacd11d833a5fca4bc808635ececf5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4244	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 1484 wrote to memory of 4244	1484	2024-02-17_d9bacd11d833a5fca4bc808635ececf5_cryptolocker.exe	85
PID 1484 wrote to memory of 4244	1484	2024-02-17_d9bacd11d833a5fca4bc808635ececf5_cryptolocker.exe	85
PID 1484 wrote to memory of 4244	1484	2024-02-17_d9bacd11d833a5fca4bc808635ececf5_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-17_d9bacd11d833a5fca4bc808635ececf5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_d9bacd11d833a5fca4bc808635ececf5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1484
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4244

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
126KB

MD5
fe0e8ab5dc8d82980199739585df589c

SHA1
344a82b1518a6e785a6c9d7cd37507688924be25

SHA256
324662e78dbce6bb06dad3ae8ba59c5787b8d9ecedab2a5b678c3487c0090c88

SHA512
7b133ad814a27996e976fc8577e4cf84cf43f670f7b5b290614f9c747cac003314a04383f3899ca13a429f0f0c688fb55fbb820a8b8c6913950521e8f41ce61b

Download Submit
memory/1484-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1484-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1484-2-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/4244-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4244-20-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download