c464da8ec506468d21acea9c3e96ae8e6e5f1df9a00233319c692ca153d9daf0

Analysis

max time kernel
141s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24/04/2024, 00:49

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General

Target

2024-04-24_f5bed92f4292d792c3ad36265158c7e2_cryptolocker.exe
Size

63KB
MD5

f5bed92f4292d792c3ad36265158c7e2
SHA1

b2301ade35f0d38f398b72f0b0dacb37f9587a2d
SHA256

c464da8ec506468d21acea9c3e96ae8e6e5f1df9a00233319c692ca153d9daf0
SHA512

7ae9f8356d5240f1b2f3e70fab60ef6ef876101066cd63fd9ad557dcf5695c3d75b7dc0b653db093d1d63783fbc0bd6d7d61f7c57a7bb5825f3b3734dd1b13d8
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299847:aq7tdgI2MyzNORQtOflIwoHNV2XBFV73

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-24_f5bed92f4292d792c3ad36265158c7e2_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
412	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 4832 wrote to memory of 412	4832	2024-04-24_f5bed92f4292d792c3ad36265158c7e2_cryptolocker.exe	85
PID 4832 wrote to memory of 412	4832	2024-04-24_f5bed92f4292d792c3ad36265158c7e2_cryptolocker.exe	85
PID 4832 wrote to memory of 412	4832	2024-04-24_f5bed92f4292d792c3ad36265158c7e2_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-24_f5bed92f4292d792c3ad36265158c7e2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_f5bed92f4292d792c3ad36265158c7e2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4832
- 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:412

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
870b23112771a420943a195c7357ebb9

SHA1
fe66e1fdca5c6dc48b71755c936705fff434e363

SHA256
6cbf0f9731859daf584aafd21779f2e34e6ae71c99a5698f359faea287af06f3

SHA512
2171ad8b0d36be48843862c160d0400f4234036e62f9825dd94413dccc93393cfcef10d393c1e5cbf1fc85b8b3402c1a58a0ed44089e17baa1fd6cc09ae5aacf

Download Submit
memory/412-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4832-0-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4832-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4832-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download