705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481

Analysis

max time kernel
142s
max time network
130s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
12-10-2023 10:43

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General

Target

705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481.exe
Size

198KB
MD5

6365610d9760efe5ba91d3478f287496
SHA1

00c5874419628ef35e7683f07e0ef2a8226465db
SHA256

705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481
SHA512

592fb45d80bba43217a3620eba6c6c4df7e2d393c08579340141a0a40e5af793dae708dbdb455fdb1c40fe1dc4d9dd9565e7c753b96bb276069fe8844f6a9cb4
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOy:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXH

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2576	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2996	ayahost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481.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	2184	705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 2576	2184	705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481.exe	29
PID 2184 wrote to memory of 2576	2184	705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481.exe	29
PID 2184 wrote to memory of 2576	2184	705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481.exe	29
PID 2184 wrote to memory of 2576	2184	705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481.exe	29

C:\Users\Admin\AppData\Local\Temp\705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481.exe
"C:\Users\Admin\AppData\Local\Temp\705ca1f6407da098146a7cb5423e3d428132373b4f094c03a836803dcd0ee481.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\705CA1~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2576

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2996

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
198KB

MD5
eaf47765ae20f1b9e46a60d97ec21aea

SHA1
b60bd3b78afb72eb9e86eccdc1aeded4ebf9a581

SHA256
d40face18228781f232af7f302ea000ca1d63c77f59319bbe9baab9a9a618b52

SHA512
29b224a8e19686d930bfbe71d244410bfb9a75983a31aa81eb264baa2e0acae280214aef7d05b945a0ded859c4fc9de4b30eaabe40439048a41ce4a6478b3861

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