fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49

Analysis

max time kernel
140s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 11:15

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General

Target

fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe
Size

80KB
MD5

dd30fe7b51840df7de308a86517d1330
SHA1

c9e13327569cf4f3876617dff07c1ec9577e7023
SHA256

fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49
SHA512

91dea4db833214af9c9510ceeb830705b3edbd7e6aac76c422527c8239042c2fc95e6afa237700369e01ca53377d335856a008d8508cb228b931ac84296d5993
SSDEEP

1536:chOJ+ecv1HIxsY+N25tCoMZfQT2kGx+x+1R9LwqrA6zSsHDk:mk+bv1He15tt2+x+1LHusjk

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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Oxvnt.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TFM0N = "c:\\d33q1ldxt74um7x3\\Oxvnt.exe"	Oxvnt.exe

Enumerates connected drives 3 TTPs 2 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:

Oxvnt.exe

description ioc process

File opened (read-only) \??\a: Oxvnt.exe
File opened (read-only) \??\b: Oxvnt.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:

Oxvnt.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 Oxvnt.exe

description	ioc	process
File opened (read-only)	\??\a:	Oxvnt.exe
File opened (read-only)	\??\b:	Oxvnt.exe

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	Oxvnt.exe

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

Processes:

Oxvnt.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Oxvnt.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Oxvnt.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

Oxvnt.exe

pid	process
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe
4596	Oxvnt.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe

pid process

1048 fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exeOxvnt.exe

pid process

1048 fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe
4596 Oxvnt.exe

pid	process
1048	fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe

pid	process
1048	fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe
4596	Oxvnt.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe

description	pid	process	target process
PID 1048 wrote to memory of 4596	1048	fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe	Oxvnt.exe
PID 1048 wrote to memory of 4596	1048	fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe	Oxvnt.exe
PID 1048 wrote to memory of 4596	1048	fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe	Oxvnt.exe

C:\Users\Admin\AppData\Local\Temp\fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe
"C:\Users\Admin\AppData\Local\Temp\fc95fa8dfe20ab0bad6449e9f31562582cc2d98cdf23f1b41a177da3aed49e49.exe"
1⤵
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1048
- \??\c:\d33q1ldxt74um7x3\Oxvnt.exe
  c:\d33q1ldxt74um7x3\Oxvnt.exe
  2⤵
  - Adds Run key to start application
  - Enumerates connected drives
  - Writes to the Master Boot Record (MBR)
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:4596

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1048-132-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1048-133-0x0000000000030000-0x0000000000033000-memory.dmp

Filesize
12KB

Download
memory/1048-134-0x0000000010000000-0x000000001001A000-memory.dmp

Filesize
104KB

Download
memory/1048-140-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4596-139-0x0000000000000000-mapping.dmp

Download
memory/4596-146-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download