efd51fabae9ec6774612f6448d5bcf4d1a3c9dcea3373b037b0e8b2e9b9a6727

Analysis

max time kernel
93s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 01:31

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General

Target

2024-02-23_344310b03c131089e24d45897178333f_cryptolocker.exe
Size

62KB
MD5

344310b03c131089e24d45897178333f
SHA1

c4842ab709ecc77f68054b1c24f7cb184a8ef3c0
SHA256

efd51fabae9ec6774612f6448d5bcf4d1a3c9dcea3373b037b0e8b2e9b9a6727
SHA512

fd2eee59aa825391cfcdb05af24cfd7d26a318d0455bb9df9753c09c938392f56ffc63f7aedea5b8b719d330817157cc24613224f7c922af2abbf21a3f03e738
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSc92:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023235-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023235-12.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-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation	2024-02-23_344310b03c131089e24d45897178333f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1944	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 2060 wrote to memory of 1944	2060	2024-02-23_344310b03c131089e24d45897178333f_cryptolocker.exe	86
PID 2060 wrote to memory of 1944	2060	2024-02-23_344310b03c131089e24d45897178333f_cryptolocker.exe	86
PID 2060 wrote to memory of 1944	2060	2024-02-23_344310b03c131089e24d45897178333f_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-23_344310b03c131089e24d45897178333f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_344310b03c131089e24d45897178333f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2060
- 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:1944

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
62KB

MD5
ff5bceda15635580f6724426880a2ed0

SHA1
739a9dca5790c949f7d67a11e6beb87a70b90867

SHA256
04e3a47acead1e5e620dee55b706be4f5fd1b3afb1d1f05bc79a32019a28461b

SHA512
893a7d3046418c9403da1d28105e4717fef74da60e07f643d9d6dcfa06e8d90e78f8a74c7e3c784eea384b1811f97bef1baac37c932aecc475958b0600572056

Download Submit
memory/1944-25-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2060-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2060-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2060-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download