a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d

Analysis

max time kernel
140s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03-02-2024 19:32

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d.exe
Size

196KB
MD5

24ec9afcc75d281bfb45ed5f30e3cd46
SHA1

0c6569602492d19c68300c5e2d88b3efa67a48fd
SHA256

a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d
SHA512

8e1b2289705f3eef80bb568550a586741f54b91d9a224339700ffbb0495d7da9b1e7fb8e6c73f7d94a1a4ced94942f066dcfef493697918b911ea96aef0e5f98
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOs:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXX1

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2636	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1992	ayahost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\ayahost.exe	a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d.exe
File created	C:\Windows\Debug\ayahost.exe	a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d.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	1896	a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 2636	1896	a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d.exe	29
PID 1896 wrote to memory of 2636	1896	a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d.exe	29
PID 1896 wrote to memory of 2636	1896	a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d.exe	29
PID 1896 wrote to memory of 2636	1896	a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d.exe	29

C:\Users\Admin\AppData\Local\Temp\a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d.exe
"C:\Users\Admin\AppData\Local\Temp\a4a29fae7a85c0788468f7013791fc0b485d92828930f79130c03a80e3901b9d.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A4A29F~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2636

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1992

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

Loading Replay Monitor...

Downloads

C:\Windows\debug\ayahost.exe

Filesize
196KB

MD5
9cb46c4c7280d62fcb206cedc41c9fed

SHA1
882809bbc622360a23b53be7fe4d89f0dab90088

SHA256
a569e67dde3dcb736551faf58574f1a2639f574cbcf67745fd1459484a98f61c

SHA512
aee576dc44efb9aa54828913612cc260e9514e0f130db8367b0ea0110b30a2634d81eec5c2ffa2434c9987226752b4a2e2257bdf8cd62b3762f658dc28e6e666

Download Submit