a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39

Analysis

max time kernel
141s
max time network
128s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
12-10-2023 04:45

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General

Target

a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39.exe
Size

198KB
MD5

d597ff2a4e5f1b55f5dc643f3123f355
SHA1

25cf20d0a2dc8a3ccb2441a7d99307564a90b9b1
SHA256

a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39
SHA512

007fffc0a85a31331766a09917e98f51b01bb02c40109c577ff545a1c1cf3a8e900b4a781ce503287fc83872a97696fae54abaa2dc646f1a21e77639e9915f1f
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCO6:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXX7

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2080	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2448	ayahost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39.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	2224	a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2080	2224	a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39.exe	29
PID 2224 wrote to memory of 2080	2224	a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39.exe	29
PID 2224 wrote to memory of 2080	2224	a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39.exe	29
PID 2224 wrote to memory of 2080	2224	a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39.exe	29

C:\Users\Admin\AppData\Local\Temp\a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39.exe
"C:\Users\Admin\AppData\Local\Temp\a270dc3271a28e2cda736feaad5f2df9d0cd036be12d1600d4d246e6bd737a39.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A270DC~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2080

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2448

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
198KB

MD5
8d7d2289e6011bcf693d1ff16fb7538f

SHA1
cea96c0e625efc92ac81dc5ac3361f6a1df6b96f

SHA256
ed174047d21ded29c75a74e9a028ed5d49466159db450c8e37babf4245bff4b7

SHA512
5fbc0f229b50f761d64fcdf8b52550c554af343cb98bfcbe6fd26effd0fd19c97e2ba5cbb5f4516a869f61a9b5eacbf738b905b5160d36b9bb8139cff42a084d

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