f786c92b5c190dd6b1c6aff2740545249a2c8263f691f841bc0530d75fac8eb5

Analysis

max time kernel
89s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 17:57

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General

Target

2024-02-12_fc221d118c72bd719a556ec944fff770_cryptolocker.exe
Size

81KB
MD5

fc221d118c72bd719a556ec944fff770
SHA1

22d63224d2b654fb16e32da8cc3c6231712629e6
SHA256

f786c92b5c190dd6b1c6aff2740545249a2c8263f691f841bc0530d75fac8eb5
SHA512

4805cd1747200f84c639ba711b09aa12b5eae5544df7825d922ed4fe8c87dbb4c77628ccdf493728535eea670724ea0648f00e9b10201da91a037eac5fa6968a
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMAea:TCjsIOtEvwDpj5HE/OUHnSM4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2044-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral2/memory/2044-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3908-56-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2044-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral2/memory/2044-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3908-56-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

misid.exe2024-02-12_fc221d118c72bd719a556ec944fff770_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	misid.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-12_fc221d118c72bd719a556ec944fff770_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

3908 misid.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3908	misid.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_fc221d118c72bd719a556ec944fff770_cryptolocker.exe

description	pid	process	target process
PID 2044 wrote to memory of 3908	2044	2024-02-12_fc221d118c72bd719a556ec944fff770_cryptolocker.exe	misid.exe
PID 2044 wrote to memory of 3908	2044	2024-02-12_fc221d118c72bd719a556ec944fff770_cryptolocker.exe	misid.exe
PID 2044 wrote to memory of 3908	2044	2024-02-12_fc221d118c72bd719a556ec944fff770_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_fc221d118c72bd719a556ec944fff770_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_fc221d118c72bd719a556ec944fff770_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2044

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:3908

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
81KB

MD5
8b435c3764af6b06f2b07d2d6ea0151b

SHA1
966121b49d0bed48e145bfeb6fdbaf39234bc0fd

SHA256
4586cb484bdff4a69c2b45716de755850f82a397046d6dc05b056265704e4810

SHA512
0ed25008401fcc240c8583f7c4fb5b1386cf8cee4c3975bcf74a69291e39d98e50e56f7b8ab5aaacc2196498a98911b7b36d04895d46b97ad39813bd6c042b16

Download Submit
memory/2044-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2044-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2044-3-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/2044-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2044-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3908-19-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3908-25-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3908-56-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download