652463f1d78ffd467155482d9fd6058fb4a1647c18caafd4fbcb63450be49621

Analysis

max time kernel
148s
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
08/05/2024, 07:29

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General

Target

2024-05-08_9e8a366514167eec77cc72fa4d2bf940_cryptolocker.exe
Size

50KB
MD5

9e8a366514167eec77cc72fa4d2bf940
SHA1

132f0b8eddd4ac8d35336fa8dc37a58ead06928d
SHA256

652463f1d78ffd467155482d9fd6058fb4a1647c18caafd4fbcb63450be49621
SHA512

3409181c45f7cbf721743418614801c9f25f02f9c0578ec5080111b9dc2ecd078823215c42e4e286cd37a3bf5db3d87b782bb7909fbc4740bc304421eaa60366
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoccB:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023b48-13.dat	CryptoLocker_rule2
behavioral2/memory/4356-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1760-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4356-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4356-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1760-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4356-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000c000000023b48-13.dat	UPX
behavioral2/memory/4356-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1760-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4356-28-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-05-08_9e8a366514167eec77cc72fa4d2bf940_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4356	asih.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 1760 wrote to memory of 4356	1760	2024-05-08_9e8a366514167eec77cc72fa4d2bf940_cryptolocker.exe	85
PID 1760 wrote to memory of 4356	1760	2024-05-08_9e8a366514167eec77cc72fa4d2bf940_cryptolocker.exe	85
PID 1760 wrote to memory of 4356	1760	2024-05-08_9e8a366514167eec77cc72fa4d2bf940_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-08_9e8a366514167eec77cc72fa4d2bf940_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-08_9e8a366514167eec77cc72fa4d2bf940_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4356

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\asih.exe

Filesize
50KB

MD5
ea46547737ad7a396efda3ec4dade670

SHA1
3393cc467fa76d0dd795d64694df5132c48e64e3

SHA256
e86d127739ee22f24c49f7ba6e369e26987c03ba84b987c0ce64b05813f82c8d

SHA512
d089a9cfe369855bcad4466eb012396fe02f945ff219833bca00bd3ce6af20a3b910d738974857ca56f13ecd8e1244d0be0574ed533c436d49ba3b22b7373766

Download Submit
memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1760-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1760-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1760-9-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1760-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4356-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4356-27-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4356-22-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/4356-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download