69e5dc7ebd328cb441c5b1f48f3100287397b920f13c6af28761d7d87ba7d513

Analysis

max time kernel
93s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 20:30

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General

Target

2024-02-24_7e739fd9ee9eab9ba3c9b18d6af20079_cryptolocker.exe
Size

45KB
MD5

7e739fd9ee9eab9ba3c9b18d6af20079
SHA1

f4dde6bfa4dbb5773a352e755793b8df678fbcf0
SHA256

69e5dc7ebd328cb441c5b1f48f3100287397b920f13c6af28761d7d87ba7d513
SHA512

778bfae3c6c0c9628b583e0545b210fca6d232da3c2b94928792cb924cb59aef6871aaa10423617fdc782bcc0f40959e10157a556eb06137eee5198ca8d91bbd
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx+:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023100-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023100-12.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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	2024-02-24_7e739fd9ee9eab9ba3c9b18d6af20079_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4072	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 4960 wrote to memory of 4072	4960	2024-02-24_7e739fd9ee9eab9ba3c9b18d6af20079_cryptolocker.exe	89
PID 4960 wrote to memory of 4072	4960	2024-02-24_7e739fd9ee9eab9ba3c9b18d6af20079_cryptolocker.exe	89
PID 4960 wrote to memory of 4072	4960	2024-02-24_7e739fd9ee9eab9ba3c9b18d6af20079_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-24_7e739fd9ee9eab9ba3c9b18d6af20079_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_7e739fd9ee9eab9ba3c9b18d6af20079_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4960
- 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:4072

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
45KB

MD5
64ba043e6d802e4b411f2b2da7e395f0

SHA1
2a40f02c401d701e83bf5685a14b5e77f549ab0f

SHA256
bde771a81d315b1a8bb54bce77c12c47bb475becbbcc118d5050f41b6f9cf4e9

SHA512
8117360ee780e66f8fbfb92b326ea3fb621e718124ffa7147b70a8ec67c6c0f521b3de7fc4eb59e18469fcff504ec45f21600400cfd26504ae5e53e396bb068f

Download Submit
memory/4072-25-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4960-0-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4960-1-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4960-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download