4d012851947c0d127d8b7b43694d3f02c36abcc39ab9d4cc4304161368882dfa

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 07:32

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General

Target

2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe
Size

40KB
MD5

71f75002a4873ea7360152acd11d1135
SHA1

83ebb969b50539ea5668c985944fd1259c20284b
SHA256

4d012851947c0d127d8b7b43694d3f02c36abcc39ab9d4cc4304161368882dfa
SHA512

95fbf5ba487b3128244bcbd9ba4adaa00e71d98e2641d00b3efb9ef35523d514a280abe191331811248fb5a5bff66d548612090fa2c4b9726f36378496424913
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/lM:6j+1NMOtEvwDpjrRy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/5092-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001b00000002251f-13.dat	CryptoLocker_rule2
behavioral2/memory/1964-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5092-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1964-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/5092-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x001b00000002251f-13.dat	CryptoLocker_set1
behavioral2/memory/1964-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5092-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1964-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/5092-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x001b00000002251f-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1964-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/5092-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1964-27-0x0000000000500000-0x000000000050F000-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-1-5-21-1790404759-2178872477-2616469472-1000\Control Panel\International\Geo\Nation	2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1964	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 5092 wrote to memory of 1964	5092	2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe	88
PID 5092 wrote to memory of 1964	5092	2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe	88
PID 5092 wrote to memory of 1964	5092	2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5092
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1964

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
41KB

MD5
f109cf79836e29c4d3c8692f20d4adce

SHA1
aeaad3011ccf2c8c8bb8f9bd05b7c407fdb2881d

SHA256
398a0fde9be05eb0b999cc76333ecbf70c9cfd096c3c94aff580e715e666b9fb

SHA512
43d0b538dbe1dca4e55419990cedb5d227688c5d9e271aca6d84a96fc91092669bca69be858a26874ee1b6833031b19cbda317197d1ea0f9cc6921b6dc973eb3

Download Submit
memory/1964-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1964-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1964-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1964-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5092-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5092-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/5092-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/5092-3-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/5092-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download