f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30

Analysis

max time kernel
140s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08/09/2024, 01:27

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General

Target

f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30.exe
Size

198KB
MD5

b068ab7e5c3d0f15233adca6857f653c
SHA1

a0d616757aee6eebd2ae9ce22c79c75672ed927d
SHA256

f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30
SHA512

45f1de53a9804295c03197e8fb1e6d98d3c960ff3e7b4278d48f92e979d41b9d7b8c585c53fe64b56b6c0b7589dce43daf388662f4ef03cb328a19c55638327a
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOy:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXX3

Score

7^/10

defense_evasion discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2792	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2580	ayahost.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30.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 3 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	f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ayahost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ayahost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	ayahost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2724	f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 2792	2724	f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30.exe	31
PID 2724 wrote to memory of 2792	2724	f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30.exe	31
PID 2724 wrote to memory of 2792	2724	f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30.exe	31
PID 2724 wrote to memory of 2792	2724	f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30.exe	31

C:\Users\Admin\AppData\Local\Temp\f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30.exe
"C:\Users\Admin\AppData\Local\Temp\f19378fd5feff4ffeaf8c00fddc351125da2cccb3e3e88d272250cb6faa2ad30.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F19378~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2792

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\debug\ayahost.exe

Filesize
198KB

MD5
0f01b3fddb9f14edbbf7afd09ec520b0

SHA1
d1d75ac9ba18b8fc1719604cf4633ce72f22de71

SHA256
4737d64fc9572d177eace15e03b735b4d4916339fddb4561a048968f6da609de

SHA512
9259437a675cc65d65b03d493cbb9683233b08163f4d59b4c09e821623d49f8971d628aab8c6de9f38bb8ac289643c913d544e1ff433f2070af1907111303b8a

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