cc4bafdf471b56d9765d7d8982f5d23cb2ef0d439099e8d2751ab41678765244

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2024 16:32

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General

Target

2024-02-19_47c4247d2567fa83d57457635cde28f6_cryptolocker.exe
Size

97KB
MD5

47c4247d2567fa83d57457635cde28f6
SHA1

faef6e6e28b426d082d1165677e5ee0cf875320a
SHA256

cc4bafdf471b56d9765d7d8982f5d23cb2ef0d439099e8d2751ab41678765244
SHA512

a617bd2c46b93d405886df36c1acc9308ff7b82fd63a6dbd47798a127dca4b9073f71f4ea5ec623f269ab5b95a741ea1ab6b6919eebd87b11b07205877236eeb
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCJF:26a+2OtEvwDpjtzI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001100000002315e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x001100000002315e-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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-19_47c4247d2567fa83d57457635cde28f6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4896	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 2708 wrote to memory of 4896	2708	2024-02-19_47c4247d2567fa83d57457635cde28f6_cryptolocker.exe	85
PID 2708 wrote to memory of 4896	2708	2024-02-19_47c4247d2567fa83d57457635cde28f6_cryptolocker.exe	85
PID 2708 wrote to memory of 4896	2708	2024-02-19_47c4247d2567fa83d57457635cde28f6_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-19_47c4247d2567fa83d57457635cde28f6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_47c4247d2567fa83d57457635cde28f6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4896

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
97KB

MD5
085ddca8e72103f9a1e37b86d552f20f

SHA1
8f39dd835fa313141f8d5c7095fc41446a96dc1f

SHA256
47c813ae6863951d9b6ef6838f79fe20f221145b6783de31ba8709f7f4018202

SHA512
823e8b423b272d5f092f23618fa8b2dc03d3084de0697b48f8e4caa3dbff782331f0a986a94b16880aec96932efc5de969d3bd82f21606556468b14563c536c7

Download Submit
memory/2708-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2708-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2708-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/4896-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4896-19-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download