188df6f3dde722f403acd4dfe3f9fb21189aeeb0a0b0b8e98e3a9e2f33c0c4d2

Analysis

max time kernel
134s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
04-05-2024 20:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe
Size

36KB
MD5

3f90aab4fdb30c7927f339d14d1b5e84
SHA1

4ff3caa8629bc78b68b96fc5359e12f063a7c72c
SHA256

188df6f3dde722f403acd4dfe3f9fb21189aeeb0a0b0b8e98e3a9e2f33c0c4d2
SHA512

ba1c9971b96fb7c9a4e9eb49cca7ebf08358efc818e07501936d810a04768c436de96409a268643c6afb0863b5f5eab3beae430d42a090bd4bc0060d338835e4
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0C:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023af1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023af1-12.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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2036	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 3400 wrote to memory of 2036	3400	2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe	83
PID 3400 wrote to memory of 2036	3400	2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe	83
PID 3400 wrote to memory of 2036	3400	2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3400
- 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:2036

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
36KB

MD5
bb66502a25d9ac8335f30040eb9d61c6

SHA1
dc3ab7fde4a765ee23baabad154688994ee3141a

SHA256
15f05432fe56d5b0a3492b203fe6193a25ba5e1fc6b4e9c9a21c7bac2db81e40

SHA512
b2fc89bf3aa4b03a985a4d36e9143a95b08e9c421d73041241aada537e02ebd7fc9d755d3988840e8cb4284c94ebb5c165bb109e09a06022728c87d90ce2cc9b

Download Submit
memory/2036-25-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download
memory/3400-0-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3400-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3400-8-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download