c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611

Analysis

max time kernel
142s
max time network
128s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
04/10/2023, 14:54

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General

Target

c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611.exe
Size

199KB
MD5

22ae69154d99c2e8c5b9ace329f74b5b
SHA1

fd364b5a139d15ad0328f6adc3e0b2954220c478
SHA256

c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611
SHA512

291507c6b65513ce91800da6f576904ae5af94f23516da131d1bd692e7dc008d3a700be4ca14cc42be514e144efa55b1c12efc350108969a01575a46af3f140c
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOF:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXX8

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1352	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2092	ayahost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611.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	1692	c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 1352	1692	c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611.exe	29
PID 1692 wrote to memory of 1352	1692	c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611.exe	29
PID 1692 wrote to memory of 1352	1692	c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611.exe	29
PID 1692 wrote to memory of 1352	1692	c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611.exe	29

C:\Users\Admin\AppData\Local\Temp\c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611.exe
"C:\Users\Admin\AppData\Local\Temp\c4d36accd6fa7307e7aaa17633e44df901bc75446bf83de6ba06ab03722b1611.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\C4D36A~1.EXE > nul
  2⤵
  - Deletes itself
  PID:1352

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2092

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
199KB

MD5
477fa73fece1dc05e8c1deb3ac478324

SHA1
2a4091f2f1853b9973b336e1813e826ea6bdfe07

SHA256
f78f142c49d177023b81674c712d4d927d942a49e3baa673460f8c1606fb1882

SHA512
0cc0fde738d2f64311179ce6ec10d5393b3743a28a1e4f0ca0032f7cbc83070761e1cf4d89c71fde156357171d64fc3e1298ac636530fd51c0d34fe3513e2a9f

Download Submit
C:\Windows\debug\ayahost.exe

Filesize
199KB

MD5
477fa73fece1dc05e8c1deb3ac478324

SHA1
2a4091f2f1853b9973b336e1813e826ea6bdfe07

SHA256
f78f142c49d177023b81674c712d4d927d942a49e3baa673460f8c1606fb1882

SHA512
0cc0fde738d2f64311179ce6ec10d5393b3743a28a1e4f0ca0032f7cbc83070761e1cf4d89c71fde156357171d64fc3e1298ac636530fd51c0d34fe3513e2a9f

Download Submit