aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3

General

Target

aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Size

76KB
MD5

99494e108b0f8680b9115477528eb9be
SHA1

78f25898425db8b1c2cd01b8560656988d81a822
SHA256

aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3
SHA512

c9029c5750a97376ffff722368629da4ae1572a335067780fadc2df056497486b78b71e89716c80807aaf5c9c16e53073d934c511ee9a84abf8d089f73248e63
SSDEEP

768:Ae8bNRqsuhlGOBnhgFwumSCbxTGy/BBGg4NKJJKqUThbJ32+ve7i40vN0TlT+Xk6:AnqJu3abBGy3G8V0iuoKz

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exehdsg.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	hdsg.exe

Modifies visibility of file extensions in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exehdsg.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	hdsg.exe

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

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exehdsg.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	hdsg.exe

Executes dropped EXE 1 IoCs

Processes:

hdsg.exe

pid process

820 hdsg.exe

pid	process
820	hdsg.exe

Loads dropped DLL 2 IoCs

Processes:

aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe

pid	process
1364	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
1364	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

hdsg.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	hdsg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VisualStyle = "c:\\windows\\system32\\Desktop.sysm"	hdsg.exe

Enumerates connected drives 3 TTPs 23 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:

hdsg.exe

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

Drops file in System32 directory 6 IoCs

Processes:

aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exehdsg.exe

description	ioc	process
File created	\??\c:\windows\SysWOW64\Windows 3D.scr	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
File opened for modification	\??\c:\windows\SysWOW64\maxtrox.txt	hdsg.exe
File opened for modification	\??\c:\windows\SysWOW64\Windows 3D.scr	hdsg.exe
File created	\??\c:\windows\SysWOW64\Desktop.sysm	hdsg.exe
File created	\??\c:\windows\SysWOW64\CommandPrompt.Sysm	hdsg.exe
File created	\??\c:\windows\SysWOW64\maxtrox.txt	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe

Drops file in Program Files directory 35 IoCs

Processes:

hdsg.exe

description	ioc	process
File opened for modification	\??\c:\Program Files\7-Zip\7zG.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Internet Explorer\iexplore.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\default-browser-agent.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\maintenanceservice.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpenc.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpnscfg.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmprph.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Internet Explorer\ielowutil.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\firefox.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Mail\wabmig.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\7-Zip\7zFM.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Internet Explorer\iediagcmd.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Internet Explorer\ieinstal.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\WMPDMC.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\ConfirmUnlock.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\crashreporter.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\minidump-analyzer.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\updater.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmplayer.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpnetwk.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\7-Zip\7z.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\7-Zip\Uninstall.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Defender\MpCmdRun.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Defender\MSASCui.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Journal\PDIALOG.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\pingsender.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmlaunch.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpshare.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\WMPSideShowGadget.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Sidebar\sidebar.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\plugin-container.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\plugin-hang-ui.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Mail\wab.exe	hdsg.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpconfig.exe	hdsg.exe

Modifies registry class 36 IoCs

Processes:

aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exehdsg.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\NeverShowExt	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\ = "System Mechanic"	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	hdsg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\NeverShowExt	hdsg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command	hdsg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command\ = "%1"	hdsg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon\ = "c:\\windows\\SysWow64\\rasphone.exe"	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command\ = "%1"	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\ = "Microsoft System Direct"	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command\ = "%1"	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon\ = "c:\\windows\\SysWow64\\netsetup.exe"	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\ = "Microsoft System Direct"	hdsg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\ = "System Mechanic"	hdsg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon	hdsg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd	hdsg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon	hdsg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon\ = "c:\\windows\\SysWow64\\rasphone.exe"	hdsg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm	hdsg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\NeverShowExt	hdsg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon\ = "c:\\windows\\SysWow64\\netsetup.exe"	hdsg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\NeverShowExt	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	hdsg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command\ = "%1"	hdsg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command	hdsg.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exehdsg.exe

pid process

1364 aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
820 hdsg.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe

description	pid	process	target process
PID 1364 wrote to memory of 820	1364	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe	hdsg.exe
PID 1364 wrote to memory of 820	1364	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe	hdsg.exe
PID 1364 wrote to memory of 820	1364	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe	hdsg.exe
PID 1364 wrote to memory of 820	1364	aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe	hdsg.exe

C:\Users\Admin\AppData\Local\Temp\aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe
"C:\Users\Admin\AppData\Local\Temp\aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3.exe"
1⤵
- Modifies system executable filetype association
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1364

\??\c:\Documents and Settings\Admin\Application Data\Microsoft\hdsg.exe
"c:\Documents and Settings\Admin\Application Data\Microsoft\hdsg.exe" aa342772b27ea9d5607a484f35721d721514f8f9ac360eb52ad6f14b77b9ead3
2⤵
- Modifies system executable filetype association
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:820

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
76KB

MD5
ff8bcaeb6ed20ff29f4462695144c870

SHA1
a3b399c60aced864602838eacfcb1a62611782b4

SHA256
f908bbd0fba5478edf323155894f19c021316bd67f51e8c05cd85ef3e0573aa9

SHA512
fa732e3ce7a92cb7e3cf1a104c6251def16796d0eb81095da1707b464c0a6e712b9240c219f59399484778d0971d81ecf9add57948b92d06db01605ea67f51b7

Download Submit
\??\c:\Documents and Settings\Admin\Application Data\Microsoft\hdsg.exe

Filesize
76KB

MD5
ff8bcaeb6ed20ff29f4462695144c870

SHA1
a3b399c60aced864602838eacfcb1a62611782b4

SHA256
f908bbd0fba5478edf323155894f19c021316bd67f51e8c05cd85ef3e0573aa9

SHA512
fa732e3ce7a92cb7e3cf1a104c6251def16796d0eb81095da1707b464c0a6e712b9240c219f59399484778d0971d81ecf9add57948b92d06db01605ea67f51b7

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

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

Filesize
8B

MD5
24865ca220aa1936cbac0a57685217c5

SHA1
37f687cafe79e91eae6cbdffbf2f7ad3975f5e83

SHA256
841e95fa333ed89085bfbab19bb658d96ed0c837d25721411233fa55c860c743

SHA512
c8d3f514c72f48fed5de9582c4252cf5466a9d32866d8df3631ba9274ed734bb95139e4909e8116a10947fc1afa1dbeb33809da6ec050e6e4eb83d5241aeb062

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\hdsg.exe

Filesize
76KB

MD5
ff8bcaeb6ed20ff29f4462695144c870

SHA1
a3b399c60aced864602838eacfcb1a62611782b4

SHA256
f908bbd0fba5478edf323155894f19c021316bd67f51e8c05cd85ef3e0573aa9

SHA512
fa732e3ce7a92cb7e3cf1a104c6251def16796d0eb81095da1707b464c0a6e712b9240c219f59399484778d0971d81ecf9add57948b92d06db01605ea67f51b7

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\hdsg.exe

Filesize
76KB

MD5
ff8bcaeb6ed20ff29f4462695144c870

SHA1
a3b399c60aced864602838eacfcb1a62611782b4

SHA256
f908bbd0fba5478edf323155894f19c021316bd67f51e8c05cd85ef3e0573aa9

SHA512
fa732e3ce7a92cb7e3cf1a104c6251def16796d0eb81095da1707b464c0a6e712b9240c219f59399484778d0971d81ecf9add57948b92d06db01605ea67f51b7

Download Submit
memory/820-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads