51004fe6dd61e9d7cf7e4e96f65e54aee496e3b35a8a4cebb0c380c5fc4748fb

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
15/10/2024, 04:47

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General

Target

2024-10-15_bc733398bd4d39c125f036e6976fe381_cryptolocker.exe
Size

47KB
MD5

bc733398bd4d39c125f036e6976fe381
SHA1

fdabca2819f8b7a5816273b79b0212d6e6848070
SHA256

51004fe6dd61e9d7cf7e4e96f65e54aee496e3b35a8a4cebb0c380c5fc4748fb
SHA512

b744456bbb66d650e934f2493799c90f63d7a71d4112a680d28223cc92839f789a49c8ce2220bbe191298fa5bb723829f0be219eb0bc00d8ad3f88ee2372a50b
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqO6ig:bODOw9acifH+Yzig

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2836	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2704	2024-10-15_bc733398bd4d39c125f036e6976fe381_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2704-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x00070000000120fb-11.dat	upx
behavioral1/memory/2836-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2704-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2836-27-0x0000000008000000-0x000000000800F000-memory.dmp	upx

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	2024-10-15_bc733398bd4d39c125f036e6976fe381_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 2836	2704	2024-10-15_bc733398bd4d39c125f036e6976fe381_cryptolocker.exe	30
PID 2704 wrote to memory of 2836	2704	2024-10-15_bc733398bd4d39c125f036e6976fe381_cryptolocker.exe	30
PID 2704 wrote to memory of 2836	2704	2024-10-15_bc733398bd4d39c125f036e6976fe381_cryptolocker.exe	30
PID 2704 wrote to memory of 2836	2704	2024-10-15_bc733398bd4d39c125f036e6976fe381_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-15_bc733398bd4d39c125f036e6976fe381_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-15_bc733398bd4d39c125f036e6976fe381_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2836

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

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Downloads

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

Filesize
47KB

MD5
4ca51fa84a933528ab39a80f87a576db

SHA1
106d4de9e65bd2cace2baa67cd4d93a99d655a3d

SHA256
ce59d85a3e04a3ff8056e5f636618143893b312fb1d131fa25d9b9508168f175

SHA512
6534f8ee3b853c0ac74e1b1740a13fec50e48df9f3937411145f6fb8ca5e7d983920d793ca97b783e34495850891ee439dd398251503dfcfe1049510bbbbea42

Download Submit
memory/2704-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2704-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2704-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2704-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2704-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2704-14-0x0000000002BB0000-0x0000000002BBF000-memory.dmp

Filesize
60KB

Download
memory/2836-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2836-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2836-19-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2836-27-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download