fa9e969d2f594f9a2c2e327ffd1669885e26f6618a344f9da4475a58bdcfa29a

Analysis

max time kernel
144s
max time network
146s
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 17:48

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General

Target

2024-02-12_bd89eb7965cc95bff805374fdb0ee26a_cryptolocker.exe
Size

60KB
MD5

bd89eb7965cc95bff805374fdb0ee26a
SHA1

c1dd5f74f915239cc6563755687c79379e873155
SHA256

fa9e969d2f594f9a2c2e327ffd1669885e26f6618a344f9da4475a58bdcfa29a
SHA512

ad5502e3b6bce644b042c9cd895365e4f6418a2351660b474def0b377a30db3f06c462b147db4b88111d64ebef0ec97cd54075fd56d4b86643445046a211a8a7
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7GoFwDlo:xj+VGMOtEvwDpjubEgywa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2804-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral2/memory/2804-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1924-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2804-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral2/memory/2804-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1924-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2804-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
C:\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2804-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1924-54-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

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:

2024-02-12_bd89eb7965cc95bff805374fdb0ee26a_cryptolocker.exemisid.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-12_bd89eb7965cc95bff805374fdb0ee26a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1924 misid.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1924	misid.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_bd89eb7965cc95bff805374fdb0ee26a_cryptolocker.exe

description	pid	process	target process
PID 2804 wrote to memory of 1924	2804	2024-02-12_bd89eb7965cc95bff805374fdb0ee26a_cryptolocker.exe	misid.exe
PID 2804 wrote to memory of 1924	2804	2024-02-12_bd89eb7965cc95bff805374fdb0ee26a_cryptolocker.exe	misid.exe
PID 2804 wrote to memory of 1924	2804	2024-02-12_bd89eb7965cc95bff805374fdb0ee26a_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_bd89eb7965cc95bff805374fdb0ee26a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_bd89eb7965cc95bff805374fdb0ee26a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2804

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:1924

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
61KB

MD5
ed75eca6127304eb76a254cc2d69263c

SHA1
7f9691d2e26c9e16d1204b1a3dedc45eb6cac0dc

SHA256
f085fb4c1ce5683fee5b8f3f43b39c0c90752390a893924697d02c1f3d6219ea

SHA512
3c6de860b1d51fee3da85072c3516c3c63bed1d58903eb486939d180d930953850dbda8cc241a21278b5783d34f11fc4be060ff39fabdaf1cff0b612d218bac3

Download Submit
memory/1924-19-0x0000000000820000-0x0000000000826000-memory.dmp

Filesize
24KB

Download
memory/1924-21-0x0000000000800000-0x0000000000806000-memory.dmp

Filesize
24KB

Download
memory/1924-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2804-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2804-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2804-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2804-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2804-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download