0c2cc0a5b28c132015e7be60096eb6ddeac5e61e7ac1729b957994e5bade03ab

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14-03-2024 18:38

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General

Target

2024-03-14_78993b26f6d09379617618a44ad5a89f_cryptolocker.exe
Size

46KB
MD5

78993b26f6d09379617618a44ad5a89f
SHA1

9df3528cee124a73789d00be126cd471fb46756e
SHA256

0c2cc0a5b28c132015e7be60096eb6ddeac5e61e7ac1729b957994e5bade03ab
SHA512

253c5cf5f5558a3b70b40852553dd50ec381b99ca1cc55f66a1bb57072277b40c7a5f94e0a29faa4266a04117834a87ed292ebbde02eea4c6a2730c31b92cefa
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxW:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.dat	CryptoLocker_set1

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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-14_78993b26f6d09379617618a44ad5a89f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4920	hurok.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 1488 wrote to memory of 4920	1488	2024-03-14_78993b26f6d09379617618a44ad5a89f_cryptolocker.exe	89
PID 1488 wrote to memory of 4920	1488	2024-03-14_78993b26f6d09379617618a44ad5a89f_cryptolocker.exe	89
PID 1488 wrote to memory of 4920	1488	2024-03-14_78993b26f6d09379617618a44ad5a89f_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-14_78993b26f6d09379617618a44ad5a89f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_78993b26f6d09379617618a44ad5a89f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1488
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4920

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\hurok.exe

Filesize
46KB

MD5
74864057bea691d87c8cee00aed699c0

SHA1
63b8fab314d3f33544e21f9be1a19d25f3b5a704

SHA256
c0b26b4bbc710c3fba91e07cede6868d45dd752761bdb54aeba9413069beae2b

SHA512
d204656e6ef4988924e5bdff2bd43a38355636b68dba8d391ba245de1b37f5610dd93810cd130159fae6621fc7951bcb5f7b4dfff24fa792390b1703fbda58f8

Download Submit
memory/1488-0-0x0000000002030000-0x0000000002036000-memory.dmp

Filesize
24KB

Download
memory/1488-1-0x0000000002030000-0x0000000002036000-memory.dmp

Filesize
24KB

Download
memory/1488-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4920-25-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download