646ec10d26d5a320d816d29d066cea893f1196339869770a8e0abef414368d79

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2024, 21:52

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General

Target

2024-04-17_b554e7ebb13e407120cb5e5183b4844b_cryptolocker.exe
Size

63KB
MD5

b554e7ebb13e407120cb5e5183b4844b
SHA1

2a22bcfee7a53dc6bd7c65a6bb749319bc0752e5
SHA256

646ec10d26d5a320d816d29d066cea893f1196339869770a8e0abef414368d79
SHA512

8b649331c1d9d91dac9e7cf33913b5fcf5f2e3ab62087cf22413e54ade19682af91c00d5e40f8e3206cca38b025e15943bd12807aa7044b36fec695ce861657f
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299r:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7D

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000001e6f5-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000001e6f5-12.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-1-5-21-4092317236-2027488869-1227795436-1000\Control Panel\International\Geo\Nation	2024-04-17_b554e7ebb13e407120cb5e5183b4844b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1960	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 4572 wrote to memory of 1960	4572	2024-04-17_b554e7ebb13e407120cb5e5183b4844b_cryptolocker.exe	88
PID 4572 wrote to memory of 1960	4572	2024-04-17_b554e7ebb13e407120cb5e5183b4844b_cryptolocker.exe	88
PID 4572 wrote to memory of 1960	4572	2024-04-17_b554e7ebb13e407120cb5e5183b4844b_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-17_b554e7ebb13e407120cb5e5183b4844b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_b554e7ebb13e407120cb5e5183b4844b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4572
- 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:1960

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
64KB

MD5
73fe297ae0ca391e13bcef69385d9887

SHA1
cc146f69202ddbda5a6fb48c3082eaa6cfbf944f

SHA256
42d4aeb80135c08457df03164f3d52f9e969dee824ca8c8e8131c93a4789617b

SHA512
8fffbdcfc531df38182d0787a6e9150788977cec47f9206e0de19bcbd2a1ecb979a7957e20cbea204010847ec9ecaee0ce2573e282a4119d330d733ee7aa3fed

Download Submit
memory/1960-21-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/4572-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4572-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4572-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download