b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65

Analysis

max time kernel
142s
max time network
132s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
06/01/2024, 22:02

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General

Target

b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65.exe
Size

195KB
MD5

8b9fdd271b4db5d2ffdc23ed74703ef8
SHA1

5b05fb4aae2fdbb35e69cb12c508a549612f347c
SHA256

b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65
SHA512

1a57d7094a74636b9591ec75b519ddc7ddfd8b26b2ef87c53a573d7a7fe6edcb2ad3f81216b8c351bcbbc0994d0bd81f4f60c2ade9a1669b826fdee43a77fd9d
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOc:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXV

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2724	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2096	ayahost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65.exe

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

System Information Discovery
T1082

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	1968	b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2724	1968	b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65.exe	29
PID 1968 wrote to memory of 2724	1968	b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65.exe	29
PID 1968 wrote to memory of 2724	1968	b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65.exe	29
PID 1968 wrote to memory of 2724	1968	b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65.exe	29

C:\Users\Admin\AppData\Local\Temp\b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65.exe
"C:\Users\Admin\AppData\Local\Temp\b6385cc11f227df8250cb51335e9b4c664c563ea684cdd1c93d50f8fa12f0d65.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\B6385C~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2724

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2096

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

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Downloads

C:\Windows\debug\ayahost.exe

Filesize
195KB

MD5
ba49bd84561eacb12dc735f9fbb3e0f1

SHA1
66625973319a7a2f72840a4808a20ff6bad41275

SHA256
b0606bdd8e5bc08099e82742e9f393a828fb5d323242dca0d7102035b9f0e901

SHA512
2e40d11a74a254598da7715e343d84650bd203661d40e1bebf954a9f9aa3ea630cf4e5e8331946f4ad288f4b9efc99bf4a4d3c872adc2e9943f89659bfdc7e0c

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