8337d35b8e17501bf27dbf8b2561a9b72cfd59ff2bcf42c12342b68a46c277ea

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:26

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General

Target

2024-05-23_30b87cee1220b8afa29d21779c1f88a9_cryptolocker.exe
Size

32KB
MD5

30b87cee1220b8afa29d21779c1f88a9
SHA1

8497317ee689b100d960e7f200c999dc5796fede
SHA256

8337d35b8e17501bf27dbf8b2561a9b72cfd59ff2bcf42c12342b68a46c277ea
SHA512

52e8390ebad241ebdf5eb7a5dbaa0a0d2c99e2ab220c8e209a485509964e97042a2a6822f52aa9f2b4651be3cf8079368c9ec55214c7a967d0e18c2c022a59f9
SSDEEP

384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cJ3v7T:bAvJCYOOvbRPDEgXRcJn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\demka.exe	CryptoLocker_rule2

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:

2024-05-23_30b87cee1220b8afa29d21779c1f88a9_cryptolocker.exedemka.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-23_30b87cee1220b8afa29d21779c1f88a9_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	demka.exe

Executes dropped EXE 1 IoCs

Processes:

demka.exe

pid process

1480 demka.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1480	demka.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_30b87cee1220b8afa29d21779c1f88a9_cryptolocker.exe

description	pid	process	target process
PID 4812 wrote to memory of 1480	4812	2024-05-23_30b87cee1220b8afa29d21779c1f88a9_cryptolocker.exe	demka.exe
PID 4812 wrote to memory of 1480	4812	2024-05-23_30b87cee1220b8afa29d21779c1f88a9_cryptolocker.exe	demka.exe
PID 4812 wrote to memory of 1480	4812	2024-05-23_30b87cee1220b8afa29d21779c1f88a9_cryptolocker.exe	demka.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_30b87cee1220b8afa29d21779c1f88a9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_30b87cee1220b8afa29d21779c1f88a9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4812

C:\Users\Admin\AppData\Local\Temp\demka.exe
"C:\Users\Admin\AppData\Local\Temp\demka.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:1480

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\demka.exe
Filesize
32KB

MD5
0bfca550927165886d605abe6f8f9929

SHA1
5a2e3b02c4c16d5c3c8d881ba3a97b80c8f3d341

SHA256
5fedf89f14c12c53a08cb6d2b184c815e78825f62b7609d7041f98014c73a9c7

SHA512
d7c204c088aadd05f72afb7cad79769c4955ead89a72f08573ce3a29d7b7d264144d21b69ed13f47cc7ba85a032149b66156c50e776fabd0ed1f6f547796dcf4

Download Submit
C:\Users\Admin\AppData\Local\Temp\medkem.exe
Filesize
186B

MD5
48f8f3a4bea90e6693552bd07285565a

SHA1
595de43c83cda6aef540c88db4c819a72935641e

SHA256
1be80f44ebed59cb63bca05030c1ef3fd6b8c88a012878851531a60d9b29bf30

SHA512
7b8217adadd38d969d68ac164a365d5f1df5433a866672b119c01a06e3161528b9e36b26828687ef221d02ce4013f842d2f1202509f83c9245564fc736e13380

Download Submit
memory/1480-25-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4812-0-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/4812-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4812-8-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download