a385e1420aef90f610c066aec9b02ee460f751ec85d0dea8733637f0f7b63080

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/09/2024, 21:24

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-09-21_f3c76b50d67dfa9bf70ccbfde76ee83c_cryptolocker.exe
Size

39KB
MD5

f3c76b50d67dfa9bf70ccbfde76ee83c
SHA1

d526bdd7c80b4150bbb4aa02dcd20d80e7fbb71f
SHA256

a385e1420aef90f610c066aec9b02ee460f751ec85d0dea8733637f0f7b63080
SHA512

aa1f80ab8007e802c322ad8f24513d45e0a9d4d5f86669838faf261c004af7bb8ae391b151ee667a00a62db504b6292084cfc80bfd74609d6ae1e66cb555a226
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0Upah:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xd

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2556	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2028	2024-09-21_f3c76b50d67dfa9bf70ccbfde76ee83c_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-21_f3c76b50d67dfa9bf70ccbfde76ee83c_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hurok.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2028	2024-09-21_f3c76b50d67dfa9bf70ccbfde76ee83c_cryptolocker.exe
2556	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 2556	2028	2024-09-21_f3c76b50d67dfa9bf70ccbfde76ee83c_cryptolocker.exe	31
PID 2028 wrote to memory of 2556	2028	2024-09-21_f3c76b50d67dfa9bf70ccbfde76ee83c_cryptolocker.exe	31
PID 2028 wrote to memory of 2556	2028	2024-09-21_f3c76b50d67dfa9bf70ccbfde76ee83c_cryptolocker.exe	31
PID 2028 wrote to memory of 2556	2028	2024-09-21_f3c76b50d67dfa9bf70ccbfde76ee83c_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-09-21_f3c76b50d67dfa9bf70ccbfde76ee83c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_f3c76b50d67dfa9bf70ccbfde76ee83c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  PID:2556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
39KB

MD5
92b64963c234d2aacc38510382f4ed8e

SHA1
9e93905197491fe1c574952f2156b7b6c66869f2

SHA256
1377ccfdc23473afdf37c640c6d0c5a8e5a565300adf50244d804779f9c36793

SHA512
42be6ce8e8b1c8b2b728bd302afefe74bc78b8d0cd3a2d3a5d05ec682730acb6553961dca3cc0c4a2bc745e90c4555c5d7d43bf48465395d680fa859e26dc9f9

Download Submit
memory/2028-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2028-8-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2028-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2556-23-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download