407749c9862fa3fd6219065cb7ccd4f135a06dbcb7d69342b9badda9273fa292

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/09/2024, 00:41

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General

Target

$TEMP/windll.dll
Size

128KB
MD5

3752b12d253975e2e57d1019f0694c1b
SHA1

21540d83c8a5a411a2a8136945a742db396a5196
SHA256

7f0b77ee743f5ff9c3dc55c3215f2151fe57a3fdec710f8473fbe4c95120d2b9
SHA512

a85a9d7cda719cdd50409ddf7729f40193d87f0b853372989fd0a9803c0af3d3e441a7022a1dae4b35047ed35714ca295c17239b5acb3266b8f6d8f2957e5d50
SSDEEP

3072:ZY3Mxe4bs9QeFfo/ZLnuRfooq5lH+XbeQmjkUUZEDPUIQrYS0NY:ZY3Mxe4bPeJoBLnagoqLkeQNpeDPeR0q

Score

10^/10

discovery persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 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\ShellServiceObjectDelayLoad\MSOutlook = "{a1d295c9-a3ff-4974-b181-15fcf6638bc3}"	regsvr32.exe

Loads dropped DLL 1 IoCs

pid	Process
2188	regsvr32.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\MS\MSOutlook.dll	regsvr32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	regsvr32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a1d295c9-a3ff-4974-b181-15fcf6638bc3}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a1d295c9-a3ff-4974-b181-15fcf6638bc3}\InprocServer32\ = "C:\\Program Files (x86)\\Common Files\\MS\\MSOutlook.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a1d295c9-a3ff-4974-b181-15fcf6638bc3}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a1d295c9-a3ff-4974-b181-15fcf6638bc3}	regsvr32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2188	regsvr32.exe
2188	regsvr32.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2188	regsvr32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2188	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 2188	3020	regsvr32.exe	30
PID 3020 wrote to memory of 2188	3020	regsvr32.exe	30
PID 3020 wrote to memory of 2188	3020	regsvr32.exe	30
PID 3020 wrote to memory of 2188	3020	regsvr32.exe	30
PID 3020 wrote to memory of 2188	3020	regsvr32.exe	30
PID 3020 wrote to memory of 2188	3020	regsvr32.exe	30
PID 3020 wrote to memory of 2188	3020	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$TEMP\windll.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$TEMP\windll.dll
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2188

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Program Files (x86)\Common Files\MS\MSOutlook.dll

Filesize
128KB

MD5
3752b12d253975e2e57d1019f0694c1b

SHA1
21540d83c8a5a411a2a8136945a742db396a5196

SHA256
7f0b77ee743f5ff9c3dc55c3215f2151fe57a3fdec710f8473fbe4c95120d2b9

SHA512
a85a9d7cda719cdd50409ddf7729f40193d87f0b853372989fd0a9803c0af3d3e441a7022a1dae4b35047ed35714ca295c17239b5acb3266b8f6d8f2957e5d50

Download Submit
memory/2188-3-0x0000000000170000-0x0000000000190000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads