fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428

Analysis

max time kernel
141s
max time network
129s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13-02-2024 01:32

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General

Target

fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428.exe
Size

196KB
MD5

78eb77cd7907d64b666ad3b2bf07b4a3
SHA1

1da02a64662f1c1d05c5d277a9419c9579595ba4
SHA256

fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428
SHA512

15f332a9b90127ec5fc939e79d481601e5c9e6fe5c7df29c9bb05d4be9896b9f29a1d4c48093281cc71dfc84a4eeed6fb3c8eff7f0d94110711e54634f303f58
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOl:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXA

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2692	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2940	ayahost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428.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	2404	fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2692	2404	fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428.exe	29
PID 2404 wrote to memory of 2692	2404	fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428.exe	29
PID 2404 wrote to memory of 2692	2404	fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428.exe	29
PID 2404 wrote to memory of 2692	2404	fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428.exe	29

C:\Users\Admin\AppData\Local\Temp\fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428.exe
"C:\Users\Admin\AppData\Local\Temp\fdaed31b2f1c89e4aa5baa74788e58db200efbca07144904a308d41c61ce9428.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\FDAED3~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2692

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2940

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
196KB

MD5
05342e9643820bb8c65b050ce0d10ce8

SHA1
2e86458b694b9c45ad876a6bdebc981fa2e6a914

SHA256
2ed21cff0f5e1a87c4b13cfe309b8d2b22caa64a48fbe0b623cb2819614cf892

SHA512
5c27d4d43b75f94272d277ec64a239986b7614ceb50e75ed12e838d3636d6c8bb3f8edaefda07623225abe4f184c99a58994f676bef772dcc31c1a447b88c698

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