15dfb04d19ff941285c3012852f832ed3d080d4205261c70bf0ed4760c5c0dfb

Analysis

max time kernel
179s
max time network
187s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2023 18:16

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General

Target

33cdb46c0ce0649dddb8b5f03a305964.exe
Size

136KB
MD5

33cdb46c0ce0649dddb8b5f03a305964
SHA1

0b80103b7b665817e8cf18cca8c2f4d7e9d6ca4f
SHA256

15dfb04d19ff941285c3012852f832ed3d080d4205261c70bf0ed4760c5c0dfb
SHA512

ee3113d92d6e627ae5884d23e9c59fee9fb9938ae0ace5320765a49171b2c34df02df9528f6bd25ff5c500e3eb82037114b523c9ccb1e674367d18d52fb64f75
SSDEEP

1536:sl1PvGRTSehlnkBK+Hp2KBqB3VTPwQ1ChR/0nfFEOvz8Td49P878F4OS:CWROOlnSKk9Urwbj0nfFBb8p49VpS

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
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\dxtl21q14\\Qcsiuse.exe /Klaunchp"	Qcsiuse.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

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

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	33cdb46c0ce0649dddb8b5f03a305964.exe
File opened for modification	\??\PHYSICALDRIVE0	Qcsiuse.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

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3956	Qcsiuse.exe
3956	Qcsiuse.exe
3956	Qcsiuse.exe
3956	Qcsiuse.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1008	33cdb46c0ce0649dddb8b5f03a305964.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1008	33cdb46c0ce0649dddb8b5f03a305964.exe
Token: SeDebugPrivilege	1008	33cdb46c0ce0649dddb8b5f03a305964.exe
Token: SeDebugPrivilege	1008	33cdb46c0ce0649dddb8b5f03a305964.exe
Token: SeDebugPrivilege	3956	Qcsiuse.exe
Token: SeDebugPrivilege	3956	Qcsiuse.exe
Token: SeDebugPrivilege	3956	Qcsiuse.exe
Token: SeDebugPrivilege	3956	Qcsiuse.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1008	33cdb46c0ce0649dddb8b5f03a305964.exe
3956	Qcsiuse.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1008 wrote to memory of 3956	1008	33cdb46c0ce0649dddb8b5f03a305964.exe	93
PID 1008 wrote to memory of 3956	1008	33cdb46c0ce0649dddb8b5f03a305964.exe	93
PID 1008 wrote to memory of 3956	1008	33cdb46c0ce0649dddb8b5f03a305964.exe	93

C:\Users\Admin\AppData\Local\Temp\33cdb46c0ce0649dddb8b5f03a305964.exe
"C:\Users\Admin\AppData\Local\Temp\33cdb46c0ce0649dddb8b5f03a305964.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1008
- \??\c:\dxtl21q14\Qcsiuse.exe
  launch
  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 AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3956