eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc

Analysis

max time kernel
152s
max time network
155s
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 12:47

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe
Size

79KB
MD5

02ed5b34d27c5738f15f182e640a9c45
SHA1

1e02d94bde700f6d1fdafc01e85761558425c2e9
SHA256

eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc
SHA512

fb9a9f74810cd158f6e5ef2eeb9929c41a750b4110f867b09730e924bb9966cc7651b6de9a859c4a7d14cfeaef1712ef54aec3d9f5df9d987f0a6a797c59abac
SSDEEP

1536:cul2Hb2ZRYj+FRNZyiGpP3ngsDegiv174Q6UL89VzLFWtg20:Jl6bqK+fCnVivR4Qo1LUA

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:

Nrwhu.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TFM0N = "c:\\qtu34dxuepp1dee2\\Nrwhu.exe"	Nrwhu.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:

Nrwhu.exe

description ioc process

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

Nrwhu.exe

description ioc process

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

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

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	Nrwhu.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:

Nrwhu.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Nrwhu.exe

pid process

1332 Nrwhu.exe
1332 Nrwhu.exe
1332 Nrwhu.exe
1332 Nrwhu.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe

pid process

4236 eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exeNrwhu.exe

pid process

4236 eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe
1332 Nrwhu.exe

pid	process
1332	Nrwhu.exe
1332	Nrwhu.exe
1332	Nrwhu.exe
1332	Nrwhu.exe

pid	process
4236	eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe

pid	process
4236	eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe
1332	Nrwhu.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe

description	pid	process	target process
PID 4236 wrote to memory of 1332	4236	eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe	Nrwhu.exe
PID 4236 wrote to memory of 1332	4236	eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe	Nrwhu.exe
PID 4236 wrote to memory of 1332	4236	eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe	Nrwhu.exe

C:\Users\Admin\AppData\Local\Temp\eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe
"C:\Users\Admin\AppData\Local\Temp\eb2df12a6da04bc839cbca70a865bb2e0d18ec8e673485b531effa9df2a9a7fc.exe"
1⤵
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4236

\??\c:\qtu34dxuepp1dee2\Nrwhu.exe
c:\qtu34dxuepp1dee2\Nrwhu.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:1332

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

Loading Replay Monitor...

Downloads

memory/1332-139-0x0000000000000000-mapping.dmp

Download
memory/1332-141-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1332-147-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4236-132-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4236-133-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4236-134-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4236-140-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download