4f7662013f2237517b64a1cc1705ad8bc828e204be944bf14260f95903ffbb4c

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07-03-2024 03:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe
Size

101KB
MD5

e81acb7ce0040a7a2c942b62ad354e59
SHA1

ca4ba90bf37d83b13a33429689792a1a1f05f990
SHA256

4f7662013f2237517b64a1cc1705ad8bc828e204be944bf14260f95903ffbb4c
SHA512

33568883d10882e50c99ad0fd8792b454985d8aab0daa6613f87c9ec6f1e54f77ceeaa59de0cdaf2abea171d38dd2a968ee29c17c5adb21e7c3294242352810e
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNu5aTU:i5nkFGMOtEvwDpjNbwQEIikgN8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3452-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e9a0-13.dat	CryptoLocker_rule2
behavioral2/memory/3452-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4912-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3452-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4912-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3452-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000300000001e9a0-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3452-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4912-26-0x0000000000500000-0x000000000050F000-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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4912	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 3452 wrote to memory of 4912	3452	2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe	90
PID 3452 wrote to memory of 4912	3452	2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe	90
PID 3452 wrote to memory of 4912	3452	2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_e81acb7ce0040a7a2c942b62ad354e59_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3452
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4912

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\misid.exe

Filesize
101KB

MD5
1d601a2fe3d9f5c51eb3416f569aada5

SHA1
bc01d458fdd58fdc7a7e22536a4634e173eaf333

SHA256
1188839bc0135ef9fe09afabd9d880fee6ba0e878e625b107976caf723f8120d

SHA512
5b8a46f18f11bee5097eb8b7a3daa477493c9a8f70968dea14b6c57dcfa9d6d99c8e7a2b287ef9abddf7cc424b94a42728d0c7b92b285686d592a9ae9251931f

Download Submit
memory/3452-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3452-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3452-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3452-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3452-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4912-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4912-22-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/4912-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download