312f082ea8f64609d30ff62b11f564107bf7a4ec9e95944dfd3da57c6cdb4e94

General

Target

AntiVirusInstaller.exe
Size

816KB
MD5

7dfbfba1e4e64a946cb096bfc937fbad
SHA1

9180d2ce387314cd4a794d148ea6b14084c61e1b
SHA256

312f082ea8f64609d30ff62b11f564107bf7a4ec9e95944dfd3da57c6cdb4e94
SHA512

f47b05b9c294688811dd72d17f815cce6c90f96d78f6835804d5182e2f4bfbd2d6738de854b8a79dea6345f9372ba76a36920e51e6cb556ef4b38b620e887eb4
SSDEEP

12288:De/2dxVZ+ivtwdeOkD5YNfEp5UOc1+A4cMfZIYMlBlfwFyfr7BM9G/9V:6/iBFSkyNfI51cQFhMlvIofZRn

Score

7^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

AntiVirusInstaller.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows\CurrentVersion\Run	AntiVirusInstaller.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AntiVirus Pro 2017 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\AntiVirusInstaller.exe"	AntiVirusInstaller.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

AntiVirusInstaller.exe

description	ioc	process
File opened (read-only)	\??\X:	AntiVirusInstaller.exe
File opened (read-only)	\??\H:	AntiVirusInstaller.exe
File opened (read-only)	\??\T:	AntiVirusInstaller.exe
File opened (read-only)	\??\Q:	AntiVirusInstaller.exe
File opened (read-only)	\??\S:	AntiVirusInstaller.exe
File opened (read-only)	\??\Y:	AntiVirusInstaller.exe
File opened (read-only)	\??\O:	AntiVirusInstaller.exe
File opened (read-only)	\??\P:	AntiVirusInstaller.exe
File opened (read-only)	\??\J:	AntiVirusInstaller.exe
File opened (read-only)	\??\K:	AntiVirusInstaller.exe
File opened (read-only)	\??\L:	AntiVirusInstaller.exe
File opened (read-only)	\??\M:	AntiVirusInstaller.exe
File opened (read-only)	\??\R:	AntiVirusInstaller.exe
File opened (read-only)	\??\F:	AntiVirusInstaller.exe
File opened (read-only)	\??\G:	AntiVirusInstaller.exe
File opened (read-only)	\??\N:	AntiVirusInstaller.exe
File opened (read-only)	\??\U:	AntiVirusInstaller.exe
File opened (read-only)	\??\V:	AntiVirusInstaller.exe
File opened (read-only)	\??\W:	AntiVirusInstaller.exe
File opened (read-only)	\??\Z:	AntiVirusInstaller.exe
File opened (read-only)	\??\E:	AntiVirusInstaller.exe
File opened (read-only)	\??\I:	AntiVirusInstaller.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

AntiVirusInstaller.exe

description ioc process

File opened for modification \??\PhysicalDrive0 AntiVirusInstaller.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	\??\PhysicalDrive0	AntiVirusInstaller.exe

Suspicious use of FindShellTrayWindow 12 IoCs

Processes:

AntiVirusInstaller.exe

pid	process
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe

Suspicious use of SendNotifyMessage 10 IoCs

Processes:

AntiVirusInstaller.exe

pid	process
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe
3260	AntiVirusInstaller.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AntiVirusInstaller.exe

pid process

3260 AntiVirusInstaller.exe
3260 AntiVirusInstaller.exe

C:\Users\Admin\AppData\Local\Temp\AntiVirusInstaller.exe
"C:\Users\Admin\AppData\Local\Temp\AntiVirusInstaller.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:3260

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/3260-133-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-134-0x0000000000B60000-0x0000000000B61000-memory.dmp

Filesize
4KB

Download
memory/3260-135-0x00000000028E0000-0x00000000028E1000-memory.dmp

Filesize
4KB

Download
memory/3260-136-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-137-0x00000000028E0000-0x00000000028E1000-memory.dmp

Filesize
4KB

Download
memory/3260-138-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-139-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-140-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-141-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-142-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-143-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-144-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-145-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-146-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-147-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-148-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-149-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-150-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-151-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-152-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-153-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-161-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download
memory/3260-166-0x0000000000400000-0x0000000000A06000-memory.dmp

Filesize
6.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads