3dd75c19c512097ad03deea4f0dff1630a7f482a2593b420b60f9f4c4f887ee9

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
05/03/2024, 08:28

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General

Target

2024-03-05_36a002f05767d32ac7fdab4c03d46056_cryptolocker.exe
Size

47KB
MD5

36a002f05767d32ac7fdab4c03d46056
SHA1

0465f233c7fac22add73877bdb5513ecd7852283
SHA256

3dd75c19c512097ad03deea4f0dff1630a7f482a2593b420b60f9f4c4f887ee9
SHA512

08c5914c4cd635fa49ca67ebca81478bdf5707612e71eb2d2f785113293164c3682ae66e34bca0900a6a959323003c45c06f516be2a630ece7630534cc49d77c
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxe:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-05_36a002f05767d32ac7fdab4c03d46056_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3804	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 1336 wrote to memory of 3804	1336	2024-03-05_36a002f05767d32ac7fdab4c03d46056_cryptolocker.exe	90
PID 1336 wrote to memory of 3804	1336	2024-03-05_36a002f05767d32ac7fdab4c03d46056_cryptolocker.exe	90
PID 1336 wrote to memory of 3804	1336	2024-03-05_36a002f05767d32ac7fdab4c03d46056_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-05_36a002f05767d32ac7fdab4c03d46056_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_36a002f05767d32ac7fdab4c03d46056_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1336
- 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:3804

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
47KB

MD5
8a396df5947357573372dcd0b920c114

SHA1
7a2481d0d1e6ada4d6cd7249a015ac567f83339a

SHA256
f9e2e26fac146d99649bffd1e5bd1f1d3bfdb42d29322a8371d7b2c603052765

SHA512
55495c3b32d9d58396ea96ff7aea121ff0ddc7ff07827ab5f1a70b172a46b18d52a0e6e38989759ceba3c3e275cc445738cc7b7ad2dcde9ddc65894105e8492c

Download Submit
memory/1336-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/1336-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/1336-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3804-21-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download