18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d

Analysis

max time kernel
141s
max time network
127s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
22/01/2024, 22:32

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General

Target

18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d.exe
Size

196KB
MD5

90f34d5c5abfbfcdb99c2a66bcbffd34
SHA1

b38bf3a05616a368df682b7b5a5cb5dcef2f715f
SHA256

18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d
SHA512

93090a244b37207b49722e41d2533f61ec19e3a76b2ca99eb039ce9853f96ff23bdcc2d51a531bc9a71bb7e06d5fe18eec8d05e938146c207cda30331e3e4267
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOq:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXT

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2336	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2088	ayahost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	ayahost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ayahost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2208	18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2336	2208	18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d.exe	29
PID 2208 wrote to memory of 2336	2208	18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d.exe	29
PID 2208 wrote to memory of 2336	2208	18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d.exe	29
PID 2208 wrote to memory of 2336	2208	18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d.exe	29

C:\Users\Admin\AppData\Local\Temp\18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d.exe
"C:\Users\Admin\AppData\Local\Temp\18ce007b4fab622ce129b994b437cfd819d66f07f54dfb5aa4f9c4719bfe5a1d.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\18CE00~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2336

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2088

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
196KB

MD5
f224007c48be0d1fedff530ee65bbe0c

SHA1
4ae0afee5d9c4a0ca5c58094a2faaae102cdd73c

SHA256
a41a2f319231f962c5764dc5635fd23d4baf00cd05660b1145a533d6938a72fc

SHA512
3517a3288ff8ae53f5c04bb2a6dd87272003574c8a0bfe35f7bc1a71d94db0f09387fdeb2b6965ae9987d86f1b10f5f099c5541ac8d4fc954a7f2d57a688397f

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