30d5344b1504183884046b7471cef93d479c98ef4f0b0e0af59a41ee627d1126

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 07:49

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General

Target

2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe
Size

97KB
MD5

78917d0a526ff965045806dcb654f642
SHA1

faf64f2bcba5a7782d6af7cd2396200838886c04
SHA256

30d5344b1504183884046b7471cef93d479c98ef4f0b0e0af59a41ee627d1126
SHA512

39a42041e0b205247cd13dbfc11ba9a9ae2facde1c5e0a51852431c73d4bbfcfd54937efaa9cbf3172276eb0b8680ad35cd2750d2d8e6232c6bc53ca3a6816cd
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJvfT302U:xj+VGMOtEvwDpjubwQEIiVmkf0Z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000224f7-13.dat	CryptoLocker_rule2
behavioral2/memory/4852-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3040-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3040-53-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00090000000224f7-13.dat	CryptoLocker_set1
behavioral2/memory/4852-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3040-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3040-53-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x00090000000224f7-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4852-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3040-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3040-53-0x0000000000500000-0x0000000000510000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
3040	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 4852 wrote to memory of 3040	4852	2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe	88
PID 4852 wrote to memory of 3040	4852	2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe	88
PID 4852 wrote to memory of 3040	4852	2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4852
- 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:3040

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
97KB

MD5
796fdd673a8273110bb4e02b78da3dd1

SHA1
aa628ec0bbcebbee8293ffce757a2cccc5df8e4c

SHA256
73c2c1de0e72188e9072c85a00506cc19e9654ef4d9e44bc2b2547f511bc255a

SHA512
7ad3f6ac2645f5461a1361f81c4fe35d9e650ce324533b18d1fc7398bfdab7231b3a76209cbdaeca1693c224253156d2962142b28288b6f8e3f5460bfdd9553e

Download Submit
memory/3040-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3040-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3040-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3040-53-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4852-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4852-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4852-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4852-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download