47310ac17cea45513eca9212aaf7fac07339d91cf1b14b6530000c6c5e3387a7

Analysis

max time kernel
143s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25-02-2024 12:45

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General

Target

2024-02-25_a1894a638a92e97193e3a026289ffd1f_cryptolocker.exe
Size

64KB
MD5

a1894a638a92e97193e3a026289ffd1f
SHA1

e8eba9c3d536f3c1ef5293fcf0c3bc4f3f88376b
SHA256

47310ac17cea45513eca9212aaf7fac07339d91cf1b14b6530000c6c5e3387a7
SHA512

51039699f17e34aded5b0a8e4fc4c881c89c33c5340b3433ee62dfe7188f65775e5ebe9a392df62aef8b908b782301d0616e0779d450d58e4f6cb65412e0d821
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xB:6j+1NMOtEvwDpjr8ox8UDEpN/H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4292-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023121-13.dat	CryptoLocker_rule2
behavioral2/memory/3344-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4292-21-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3344-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4292-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023121-13.dat	CryptoLocker_set1
behavioral2/memory/3344-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4292-21-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3344-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4292-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0006000000023121-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3344-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4292-21-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3344-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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	2024-02-25_a1894a638a92e97193e3a026289ffd1f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3344	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 4292 wrote to memory of 3344	4292	2024-02-25_a1894a638a92e97193e3a026289ffd1f_cryptolocker.exe	85
PID 4292 wrote to memory of 3344	4292	2024-02-25_a1894a638a92e97193e3a026289ffd1f_cryptolocker.exe	85
PID 4292 wrote to memory of 3344	4292	2024-02-25_a1894a638a92e97193e3a026289ffd1f_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-25_a1894a638a92e97193e3a026289ffd1f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_a1894a638a92e97193e3a026289ffd1f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4292
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3344

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
64KB

MD5
632943c834408f9855795a11fa9c0704

SHA1
cd645f1526c980adaa6014f5a3841a60c108d747

SHA256
fabe0d09a58c4fc3f6d1350ebc33b81506165b9fbb441c106a8a5629a804d565

SHA512
a68da7c64ff9eef963841745d8fc6adee983e8e2f5b49a66261e5d8c9630544517664a6fd4bd0a1e5f417fb86a32f667ab92d39bf6dd5a8e0e9b91e2c15614cd

Download Submit
memory/3344-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3344-19-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3344-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3344-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4292-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4292-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4292-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4292-3-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/4292-21-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download