7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2

Analysis

max time kernel
140s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04/04/2024, 19:58

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General

Target

7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2.exe
Size

197KB
MD5

01361cfebdf04c903c3c186e42d7cf8b
SHA1

0a5f087782afb26c2dba3e40616db0347b2f6e6e
SHA256

7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2
SHA512

baab9440548c83ee945793fc1d89c1dbfadda41a76c5af12d3728b0efee7b0f6c86ad639de7638c2e556d8f5cc725f700c01a3d5a8e2f92eab8806b3ea5a3e97
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCO2:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXX

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2136	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1708	ayahost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2.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	2844	7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2136	2844	7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2.exe	29
PID 2844 wrote to memory of 2136	2844	7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2.exe	29
PID 2844 wrote to memory of 2136	2844	7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2.exe	29
PID 2844 wrote to memory of 2136	2844	7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2.exe	29

C:\Users\Admin\AppData\Local\Temp\7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2.exe
"C:\Users\Admin\AppData\Local\Temp\7928bb0ddeb6d6d15af73e080c6ae2e25fd143964fb6d0f841dcfec655993bb2.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\7928BB~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2136

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1708

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

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Downloads

C:\Windows\debug\ayahost.exe

Filesize
197KB

MD5
8e582e37cc3e5c727d5bebc4c09255c1

SHA1
d90794a32da485814d16ad0c935312badcefd8e5

SHA256
61986bceff33e939f92a496beeafeac97c3b78743611aef0787bf9c1d08f89aa

SHA512
fb8f3721c68100eb1ce55d131f5335424fd4ffac29af194c93022a2be0269526e7b5b5da9b7ed7abcb9aebf2533860f30848de7d7fc6cc3ee0f0cdf12292cf7d

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