809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6

Analysis

max time kernel
142s
max time network
139s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
04/11/2023, 08:36

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General

Target

809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6.exe
Size

193KB
MD5

98a7a9bfa7080f96ddf437cc1e66d3d2
SHA1

91238833ab01f0e1ef78306ed441770789fac04e
SHA256

809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6
SHA512

1cf4f2c8bd44c90f750384831985c343ae1e0a53e25b0aed0045fcccac07337048b9c7d890d64f7500b4f46564af8a14ea3c9ab4f8e8a7a7181050b057c4c795
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOh:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXs

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2148	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2528	ayahost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6.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	2552	809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 2148	2552	809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6.exe	29
PID 2552 wrote to memory of 2148	2552	809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6.exe	29
PID 2552 wrote to memory of 2148	2552	809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6.exe	29
PID 2552 wrote to memory of 2148	2552	809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6.exe	29

C:\Users\Admin\AppData\Local\Temp\809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6.exe
"C:\Users\Admin\AppData\Local\Temp\809852ffea8c153ff88ddcad0299224e9177535e293ec0d580c61747b9248bf6.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\809852~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2148

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2528

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
193KB

MD5
dcaa696e8b9661d979bffaa9cb2399dc

SHA1
412580813e802241624d9e56d150d315e66fc444

SHA256
b620a84f84d4f1315537f0062df6edef2746a93b36e51cca4639d8fe0f63e30f

SHA512
c8526e642aff18dbb8e5e02ca4ba89c426210a1ac918b7ddebb842fada229668477717ab3d361f1faf7d797862a3ef691e0f003d0f47a91446d73d16e6d329fa

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