4b0e0cf8aa736fc191df5fb2c0cd4618174c32392ab339653fadef60ff0537c9

Analysis

max time kernel
132s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-09-2024 04:42

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General

Target

2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe
Size

75KB
MD5

885c87be990086ab99f1474351d94ed3
SHA1

574a7f5b9e6b08f70558f6abe490aa646022adae
SHA256

4b0e0cf8aa736fc191df5fb2c0cd4618174c32392ab339653fadef60ff0537c9
SHA512

55b07b64d2f04285c7ca91d696f03e74da3ac5d32dbe4d353f2e4bc2b2616604cc3d94c77ba9a69e4e7dc77f40130db47d802d0b356103153a85e566ae41f9f8
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdw:T6a+rdOOtEvwDpjNti

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2348	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3040	2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3040-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00080000000120f9-11.dat	upx
behavioral1/memory/2348-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3040-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2348-27-0x0000000000500000-0x0000000000510000-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	2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2348	3040	2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe	30
PID 3040 wrote to memory of 2348	3040	2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe	30
PID 3040 wrote to memory of 2348	3040	2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe	30
PID 3040 wrote to memory of 2348	3040	2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-28_885c87be990086ab99f1474351d94ed3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2348

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\asih.exe

Filesize
75KB

MD5
3ab69c0a2dbb4504958b20f7d09db2f5

SHA1
b5a85335ef3a829f20c69a4a8bafbf31aad54361

SHA256
40ec9acb6132442ca0ed6e07b7e60098644721d4bb4dd0ed95ec90fdefa23731

SHA512
b11eff828dda943c0bbbe06ff4378071f93d9fcd48332baaecd743e66da721c4f34cc8abe5006a7adb7059b2793e8f133b0506e626e1534a47fbc921acd93c85

Download Submit
memory/2348-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2348-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2348-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3040-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3040-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3040-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/3040-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3040-15-0x0000000000650000-0x0000000000660000-memory.dmp

Filesize
64KB

Download
memory/3040-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3040-26-0x0000000000650000-0x0000000000660000-memory.dmp

Filesize
64KB

Download