cdae91ddc322e438c907425abe815289d055b32a6656db7a8e1cfc9f70005a0c

Analysis

max time kernel
139s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 14:36

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General

Target

2024-02-18_727584a589cee1c561c3f2ccb108de6d_cryptolocker.exe
Size

62KB
MD5

727584a589cee1c561c3f2ccb108de6d
SHA1

68b433d9f871d5b5fc38c3b43be4ed76f2c0bbfa
SHA256

cdae91ddc322e438c907425abe815289d055b32a6656db7a8e1cfc9f70005a0c
SHA512

2a9349f5c316d472d1cc672405d5ba049e9f9eb83477192d58210aff895d07b0c18cd1a7ee86d0870ce78e3a12e8d254882c545e84a188fa4832374ba3203963
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299SQj:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7N

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023201-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023201-12.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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-18_727584a589cee1c561c3f2ccb108de6d_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3712	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 1448 wrote to memory of 3712	1448	2024-02-18_727584a589cee1c561c3f2ccb108de6d_cryptolocker.exe	84
PID 1448 wrote to memory of 3712	1448	2024-02-18_727584a589cee1c561c3f2ccb108de6d_cryptolocker.exe	84
PID 1448 wrote to memory of 3712	1448	2024-02-18_727584a589cee1c561c3f2ccb108de6d_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_727584a589cee1c561c3f2ccb108de6d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_727584a589cee1c561c3f2ccb108de6d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1448
- 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:3712

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
63KB

MD5
aadc42f6cc51fabe033abacf9491f8fa

SHA1
dcc47d3b6d43810ffa6becdf3c425d76e390cc88

SHA256
beb32e4b5bded518a0280c627d5a9caf54738f2f23e4ad5a097a30a396796eb6

SHA512
a658f990a20c405b2a3c40956f38b75303e5d75386599041df147a851a52ca3107e94abab3b3a3209a27fbdc3c813d29709678ff709b0bdc54d24e5046e425c5

Download Submit
memory/1448-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1448-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1448-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3712-20-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download