43c59f4f7720d5da5c82b984e6141473bc7f9ad5001929b75b2e20c54a03b69a

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
27-04-2024 22:28

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General

Target

2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe
Size

61KB
MD5

418f204f70a8d1c08398321a34dbbfd2
SHA1

2fdcd596cf2bd96515059155cf3f262f1c8349b6
SHA256

43c59f4f7720d5da5c82b984e6141473bc7f9ad5001929b75b2e20c54a03b69a
SHA512

13c4ff065e526df17e446a6a2f6809e121365a097824792bc50c44f8b869f030db65523af2dd48e46a2bd3203c8e9041adc7d31e3de72950f035c582b41fce1e
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEO10KX:6j+1NMOtEvwDpjr8ox8UDEy0KX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3144-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral2/memory/1464-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3144-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1464-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3144-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral2/memory/1464-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3144-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1464-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3144-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
C:\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1464-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3144-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1464-27-0x0000000000500000-0x000000000050F000-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

Processes:

2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1464 misid.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1464	misid.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe

description	pid	process	target process
PID 3144 wrote to memory of 1464	3144	2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe	misid.exe
PID 3144 wrote to memory of 1464	3144	2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe	misid.exe
PID 3144 wrote to memory of 1464	3144	2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_418f204f70a8d1c08398321a34dbbfd2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3144

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:1464

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe
Filesize
62KB

MD5
7e202a718f20f65ea8c72ef407919943

SHA1
534914e23c7212c961635d5a3564b7742684f6e1

SHA256
fd48cb7fae6dcb26fa473f5122c25686a5cc7659bdbf8fbff675242ab14660f0

SHA512
a05a419b1fe535ea52ea8b77ab271a1ae57c24e76e51e3a3034ddd52a855dd727e0ab767ceb1b7506e48bc07feff9e5985794969c5cf4b4c3f9700a1244364e9

Download Submit
memory/1464-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1464-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1464-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1464-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3144-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3144-1-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/3144-2-0x0000000001F80000-0x0000000001F86000-memory.dmp

Filesize
24KB

Download
memory/3144-9-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/3144-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download