ea6ee7df81ff4f1285d19a7a4be13a26d378a02898386f9b9c37be7f531216c3

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 22:38

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General

Target

2024-02-22_ab6848fa8bd5eca065c94fadffe0701a_cryptolocker.exe
Size

40KB
MD5

ab6848fa8bd5eca065c94fadffe0701a
SHA1

fb20a0680a45bc584799e36e95912062d0535dbe
SHA256

ea6ee7df81ff4f1285d19a7a4be13a26d378a02898386f9b9c37be7f531216c3
SHA512

ccca35173336ffdd5f5b984ca478f949b635a01db190125a838aef9a2958fb7de13f5f3fb04b7e78e3fcc926b4ce88e0b21b03bae42e478376bd9eddd56bd02a
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFR1/:m5nkFNMOtEvwDpjG8hhX3/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4604-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320a-13.dat	CryptoLocker_rule2
behavioral2/memory/4604-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3996-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/4604-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3996-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4604-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000002320a-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4604-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3996-26-0x0000000000500000-0x000000000050E000-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-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation	2024-02-22_ab6848fa8bd5eca065c94fadffe0701a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3996	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 4604 wrote to memory of 3996	4604	2024-02-22_ab6848fa8bd5eca065c94fadffe0701a_cryptolocker.exe	86
PID 4604 wrote to memory of 3996	4604	2024-02-22_ab6848fa8bd5eca065c94fadffe0701a_cryptolocker.exe	86
PID 4604 wrote to memory of 3996	4604	2024-02-22_ab6848fa8bd5eca065c94fadffe0701a_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-22_ab6848fa8bd5eca065c94fadffe0701a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_ab6848fa8bd5eca065c94fadffe0701a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3996

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
40KB

MD5
3c209e9c921ba6059f1646fb90a08044

SHA1
f01bc46cb7ec2353df09e6d6cde1237d9aa85371

SHA256
41aad30e478e91dcf8f922ff1b7fc67620f4de52905cdd074c76b0b11a3c5909

SHA512
77c0965b9130f45d966c80af392d35d424522e24a720471c3fe058250b82165d42669fcecfc8a90e247518d82909bcbfcb2a05e4a21a7d5e505439ed149924d3

Download Submit
memory/3996-19-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/3996-22-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/3996-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4604-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4604-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4604-2-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4604-3-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/4604-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download