f10b8dc92701fd7b508a48e41ba420299ebfc1bf9d93d5e931c8ae094787d715

Analysis

max time kernel
117s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04-09-2024 23:37

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General

Target

6be493e835b83fa3fe2e7f48b6f25240N.exe
Size

76KB
MD5

6be493e835b83fa3fe2e7f48b6f25240
SHA1

ab3a27144f20de62e1d384cdd3c7011e4d4a200f
SHA256

f10b8dc92701fd7b508a48e41ba420299ebfc1bf9d93d5e931c8ae094787d715
SHA512

7cf022915904af0ee475f3989f15a5d0b92e908b64f01fad3d467e93288c71c93ba50a3f28094800e441cd91df7f0614f446e92c15e851d27b83b20ac746c881
SSDEEP

768:ie8bNRqsuhlGOBnhgFwumSCbxTGy/BBGg4NKJJKqUThbJ32+ve7i40vN0TlT+XkE:mnqJu3abBGy3G8V0iuoct

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	auxa.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	auxa.exe

Executes dropped EXE 1 IoCs

pid	Process
3232	auxa.exe

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	auxa.exe

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VisualStyle = "c:\\windows\\system32\\Desktop.sysm"	auxa.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

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

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	\??\c:\windows\SysWOW64\maxtrox.txt	6be493e835b83fa3fe2e7f48b6f25240N.exe
File created	\??\c:\windows\SysWOW64\Windows 3D.scr	6be493e835b83fa3fe2e7f48b6f25240N.exe
File opened for modification	\??\c:\windows\SysWOW64\maxtrox.txt	auxa.exe
File opened for modification	\??\c:\windows\SysWOW64\Windows 3D.scr	auxa.exe
File created	\??\c:\windows\SysWOW64\Desktop.sysm	auxa.exe
File created	\??\c:\windows\SysWOW64\CommandPrompt.Sysm	auxa.exe

Drops file in Program Files directory 27 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\Internet Explorer\ielowutil.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpconfig.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpnetwk.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmprph.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\setup_wm.exe	auxa.exe
File opened for modification	\??\c:\Program Files\7-Zip\7zFM.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\pingsender.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\private_browsing.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpnscfg.exe	auxa.exe
File opened for modification	\??\c:\Program Files\7-Zip\7z.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Internet Explorer\iediagcmd.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Internet Explorer\iexplore.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmlaunch.exe	auxa.exe
File opened for modification	\??\c:\Program Files\7-Zip\7zG.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\default-browser-agent.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\firefox.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpshare.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\maintenanceservice.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\updater.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Windows Mail\wabmig.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmplayer.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\crashreporter.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\minidump-analyzer.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\plugin-container.exe	auxa.exe
File opened for modification	\??\c:\Program Files\7-Zip\Uninstall.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Internet Explorer\ieinstal.exe	auxa.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	auxa.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6be493e835b83fa3fe2e7f48b6f25240N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	auxa.exe

Modifies registry class 36 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm	auxa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command\ = "%1"	auxa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon\ = "c:\\windows\\SysWow64\\rasphone.exe"	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\NeverShowExt	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon\ = "c:\\windows\\SysWow64\\netsetup.exe"	6be493e835b83fa3fe2e7f48b6f25240N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell	6be493e835b83fa3fe2e7f48b6f25240N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\NeverShowExt	6be493e835b83fa3fe2e7f48b6f25240N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\NeverShowExt	auxa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon\ = "c:\\windows\\SysWow64\\rasphone.exe"	auxa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\ = "System Mechanic"	auxa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon	auxa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd	6be493e835b83fa3fe2e7f48b6f25240N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command\ = "%1"	6be493e835b83fa3fe2e7f48b6f25240N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon	6be493e835b83fa3fe2e7f48b6f25240N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd	auxa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\ = "Microsoft System Direct"	6be493e835b83fa3fe2e7f48b6f25240N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell	6be493e835b83fa3fe2e7f48b6f25240N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open	6be493e835b83fa3fe2e7f48b6f25240N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm	6be493e835b83fa3fe2e7f48b6f25240N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	auxa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command\ = "%1"	auxa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon	auxa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	auxa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command	auxa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\NeverShowExt	auxa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command	auxa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\ = "System Mechanic"	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command\ = "%1"	6be493e835b83fa3fe2e7f48b6f25240N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\ = "Microsoft System Direct"	auxa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon\ = "c:\\windows\\SysWow64\\netsetup.exe"	auxa.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4488	6be493e835b83fa3fe2e7f48b6f25240N.exe
3232	auxa.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4488 wrote to memory of 3232	4488	6be493e835b83fa3fe2e7f48b6f25240N.exe	84
PID 4488 wrote to memory of 3232	4488	6be493e835b83fa3fe2e7f48b6f25240N.exe	84
PID 4488 wrote to memory of 3232	4488	6be493e835b83fa3fe2e7f48b6f25240N.exe	84

C:\Users\Admin\AppData\Local\Temp\6be493e835b83fa3fe2e7f48b6f25240N.exe
"C:\Users\Admin\AppData\Local\Temp\6be493e835b83fa3fe2e7f48b6f25240N.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Modifies system executable filetype association
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4488
- \??\c:\Documents and Settings\Admin\Application Data\Microsoft\auxa.exe
  "c:\Documents and Settings\Admin\Application Data\Microsoft\auxa.exe" 6be493e835b83fa3fe2e7f48b6f25240N
  2⤵
  - Modifies visibility of file extensions in Explorer
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Adds Run key to start application
  - Enumerates connected drives
  - Drops file in System32 directory
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  PID:3232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\auxa.exe

Filesize
76KB

MD5
59b268f80824c51d6501091560356c54

SHA1
765138e38978fbfb64c5e591fa10bf9a06a3d94e

SHA256
192f728af2a9aa5984d084fbe1f49d315d13e378694a4b01bd8aed3035fee153

SHA512
b9ebc0fbde9e515a3ea3dfd43c7ca59e3ff7cbe2c70cf6323fe94cbc82d8ae9b0754d9ac56064d0bbd9a084d6cada3e7874362e99461ac97992bb209ffa494ca

Download Submit
\??\c:\windows\SysWOW64\Windows 3D.scr

Filesize
76KB

MD5
eeb307d58e5a86f344f0981f5fcec2e6

SHA1
175458feaa3474f582526b15a8404fab1e94582f

SHA256
5f21c492b47a4f26df20af3ad721c3f1b0fe7d07d3960b7ca23abd5726d4ea22

SHA512
fac31d9ff15111650f1473c403bcddf6ee3f9e1a0877b7cb009aeb77194b65cc5c3b94f3574de07da385e172036108e4b0e85610f30b15fc4c41987662cf2b7f

Download Submit
\??\c:\windows\SysWOW64\maxtrox.txt

Filesize
8B

MD5
24865ca220aa1936cbac0a57685217c5

SHA1
37f687cafe79e91eae6cbdffbf2f7ad3975f5e83

SHA256
841e95fa333ed89085bfbab19bb658d96ed0c837d25721411233fa55c860c743

SHA512
c8d3f514c72f48fed5de9582c4252cf5466a9d32866d8df3631ba9274ed734bb95139e4909e8116a10947fc1afa1dbeb33809da6ec050e6e4eb83d5241aeb062

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads