46c5c017b302ae8e88dc99cec480605c03269d5fa8a544302989ace41172d5e1

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
20-02-2024 06:03

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General

Target

2024-02-20_adb4a61a4a998162771fc571011e7524_cryptolocker.exe
Size

62KB
MD5

adb4a61a4a998162771fc571011e7524
SHA1

331e31c658049891a5163092730527a75cff3ecc
SHA256

46c5c017b302ae8e88dc99cec480605c03269d5fa8a544302989ace41172d5e1
SHA512

b1e0f314ac863cf6afb7ff4d36f94179f53e1eee88708f8acab25329e1ea0b37174f6367eeb3a985dcde20140eefaff21bf68adfb2e8a1caa743091c9d554f45
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEKIv:6j+1NMOtEvwDpjr8ox8UDEK4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2536-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a00000001224e-14.dat	CryptoLocker_rule2
behavioral1/memory/1736-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1736-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2536-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a00000001224e-14.dat	CryptoLocker_set1
behavioral1/memory/1736-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1736-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral1/memory/2536-8-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000a00000001224e-14.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1736-15-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1736-25-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
1736	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2536	2024-02-20_adb4a61a4a998162771fc571011e7524_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 1736	2536	2024-02-20_adb4a61a4a998162771fc571011e7524_cryptolocker.exe	28
PID 2536 wrote to memory of 1736	2536	2024-02-20_adb4a61a4a998162771fc571011e7524_cryptolocker.exe	28
PID 2536 wrote to memory of 1736	2536	2024-02-20_adb4a61a4a998162771fc571011e7524_cryptolocker.exe	28
PID 2536 wrote to memory of 1736	2536	2024-02-20_adb4a61a4a998162771fc571011e7524_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-20_adb4a61a4a998162771fc571011e7524_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_adb4a61a4a998162771fc571011e7524_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
63KB

MD5
789dbab670b29f793bae361284f38f35

SHA1
35e8819a269957cbe8cf9338e64f375e65258e13

SHA256
78c03aedc167597fc933b98b5525baba5ec56987a6f203af0f93d4050b02fb86

SHA512
4037660957814e85c08ad46ee40e3579e9f8c80a7d4a58e737dcaaaa490e87e8778d9a08f3047dedf03956699e88fa47b0802bf4af80eb825022b25a25e4d0aa

Download Submit
memory/1736-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1736-17-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1736-21-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1736-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2536-8-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2536-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2536-1-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2536-0-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download