03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3

Analysis

max time kernel
143s
max time network
152s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
11-10-2023 14:36

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General

Target

03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3.exe
Size

198KB
MD5

e599689fcff92da6b49f563da6e408b3
SHA1

478cf0fd82567d549b0d7915af1f09fa8d15ebe5
SHA256

03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3
SHA512

9e32022e38be6f86ea57ab1e4c7d93f0ea2eadbb0fda785aca94e44f70d5172726a465ef27b7047fb56984884d8d53840063c0c7b4bef76bd91d5213353013f0
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOI:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXB

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2616	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1304	ayahost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3.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	2676	03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2616	2676	03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3.exe	29
PID 2676 wrote to memory of 2616	2676	03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3.exe	29
PID 2676 wrote to memory of 2616	2676	03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3.exe	29
PID 2676 wrote to memory of 2616	2676	03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3.exe	29

C:\Users\Admin\AppData\Local\Temp\03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3.exe
"C:\Users\Admin\AppData\Local\Temp\03ea56e1b7a92aaf2719313de950fb07762bc04c89336d5d54d1deb7ce4f50f3.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\03EA56~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2616

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1304

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
198KB

MD5
bef0956cc06974da381b05e46de55b0b

SHA1
b1449f4581c31fd64be57445faa254708448955a

SHA256
a333d6a74b237658f6ed55fdf96bfa22640bc44377ee9b65c410cd08dd83549f

SHA512
88e7001623e7ecbb44de5bf25158e7f4cef81f08638b0748a36b74a7862c2b3beb3d0f10da47be5ffeda85f33d9c38c24abbc3b6104a42e73da5e5c84ba68be6

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