12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5

Analysis

max time kernel
181s
max time network
180s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
11/10/2023, 11:28

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General

Target

12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5.exe
Size

1.2MB
MD5

10c3c4a9e3fb6bf439987a94ceaa882a
SHA1

9d863bc591b8f7820c1e606453d3e5957276c3da
SHA256

12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5
SHA512

7c5411883f63e0f982099f1fbd2b889b8e203d83054879150f498db98241ac17876c1cf760f19683bc0a5c08392aad9c1f7f1dc267f63fbe926d49bed507e5dc
SSDEEP

24576:GHXXX/XXXFqIIIcXXX5j2XXXcXXXfXXXxXXXLIII+Ph2kkkkK4kXkkkkkkkkhLX3:G9qIIIUjfIIIAbazR0vKLXZ+

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2692	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2568	ayahost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5.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	2980	12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2980 wrote to memory of 2692	2980	12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5.exe	30
PID 2980 wrote to memory of 2692	2980	12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5.exe	30
PID 2980 wrote to memory of 2692	2980	12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5.exe	30
PID 2980 wrote to memory of 2692	2980	12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5.exe	30

C:\Users\Admin\AppData\Local\Temp\12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5.exe
"C:\Users\Admin\AppData\Local\Temp\12b5d45e85cb970e2d324a0a8427c91c7c2ed52c0fc6488ba9a1543e12f230a5.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\12B5D4~1.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:2568

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
1.2MB

MD5
558592bf7531a2aef3ed0471463071ac

SHA1
b7788e10fff246b4cd5fab5f7deeb43bcb320fa2

SHA256
6c4b5c1d0e3ee98dea3f2071005b9df9803a5051dbf072855369193f641550b5

SHA512
729d3b9dbc853cd4ffbba25e22593e4e8b9b2cee49e9f088b6611e002602d9e7fe12c73ed093f87bbfbef340b9b595f397170ac55fcdc7d6b5a857c61d5237aa

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