7c4bd5af90cb4de9499ca4bbabdf124d71842437e6415c1211f02f9064e31813

Analysis

max time kernel
133s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 03:38

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General

Target

2024-06-03_4a7a77b785db123cae23640bd483e8f8_cryptolocker.exe
Size

38KB
MD5

4a7a77b785db123cae23640bd483e8f8
SHA1

6357aa1c336afbbdb885dbe29ec50c4afa739ee4
SHA256

7c4bd5af90cb4de9499ca4bbabdf124d71842437e6415c1211f02f9064e31813
SHA512

deac7fbbe7e48d178e1d0227f8195ca81a15d0e58f1d0e449fc7c923c7a9879ef90614c36dc86caaae3a29be8f6bdc5ecc242d945af423cfd3abaa3685c74a84
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0U7:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-03_4a7a77b785db123cae23640bd483e8f8_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
348	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 1636 wrote to memory of 348	1636	2024-06-03_4a7a77b785db123cae23640bd483e8f8_cryptolocker.exe	82
PID 1636 wrote to memory of 348	1636	2024-06-03_4a7a77b785db123cae23640bd483e8f8_cryptolocker.exe	82
PID 1636 wrote to memory of 348	1636	2024-06-03_4a7a77b785db123cae23640bd483e8f8_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-03_4a7a77b785db123cae23640bd483e8f8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_4a7a77b785db123cae23640bd483e8f8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1636
- 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:348

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
38KB

MD5
c536cff1cfcb4bf613044aa0bb62b845

SHA1
310cd313be9b28f879724749bc3183bb87221dc3

SHA256
18c1778faeb1243bfbbe16345604e0f6dd8300479e1b922b4efd0dc1d74a863a

SHA512
0a9242cbc0af7b087cc08026d2fa85614bd88724925b76f9062ef21b2066eaec066960c0c7fe58e8ba4475f712a4a58f1310a4fa9f03bbd2af7f24d24300c1af

Download Submit
memory/348-25-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/1636-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1636-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1636-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download