0ef6c40c1a9b7972cd632467d993a91bcabadcc5e0dc625b9f745e3f1a565201

Analysis

max time kernel
148s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
08/01/2024, 08:11

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General

Target

0ef6c40c1a9b7972cd632467d993a91bcabadcc5e0dc625b9f745e3f1a565201.dll
Size

219KB
MD5

4a79fc9416269b4f193bdf7229a46b3f
SHA1

6c5cb8d7f5eddfe0cb71c2aa38df9bbf602e0c63
SHA256

0ef6c40c1a9b7972cd632467d993a91bcabadcc5e0dc625b9f745e3f1a565201
SHA512

4aab11fd506261d132afcf165b706162b9dfad0e18d326136f232ede2509a1a0fdad320f66ca4cef962ca1e4d724d6cb4b3570f602c5c3d27d90d6e709fb8a5c
SSDEEP

6144:2C4zkyByodbSJ0l02WCL9BV+UdvrEFp7hKum:2C4tDdbSJ0CCL9BjvrEH7I

Score

8^/10

persistence upx

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000800000001e712-2.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3936	regsvr32.exe

Modifies system executable filetype association 2 TTPs 6 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\lnkfile\shellex\ContextMenuHandlers\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\Glary Utilities	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\Glary Utilities\ = "{B3C418F8-922B-4faf-915E-59BC14448CF7}"	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\lnkfile\shellex	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\lnkfile\shellex\	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\lnkfile\shellex\ContextMenuHandlers	regsvr32.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000800000001e712-2.dat	upx
behavioral2/memory/3936-5-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3936-9-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	regsvr32.exe

Modifies registry class 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B3C418F8-922B-4faf-915E-59BC14448CF7}\ = "CContextMenu Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B3C418F8-922B-4faf-915E-59BC14448CF7}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52C0F28-8D4C-4886-965C-0A772490064E}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{FD50332F-185B-4D3C-B921-E0B65E547F28}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{FD50332F-185B-4D3C-B921-E0B65E547F28}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\*\shellex\	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\*\shellex\ContextMenuHandlers\	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ContextHandler.CContextMenu.1\CLSID\ = "{B3C418F8-922B-4faf-915E-59BC14448CF7}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shellex\ContextMenuHandlers\	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shellex\	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\lnkfile\shellex\ContextMenuHandlers	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52C0F28-8D4C-4886-965C-0A772490064E}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52C0F28-8D4C-4886-965C-0A772490064E}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52C0F28-8D4C-4886-965C-0A772490064E}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{FD50332F-185B-4D3C-B921-E0B65E547F28}\TypeLib\ = "{B52C0F28-8D4C-4886-965C-0A772490064E}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shellex	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shellex\ContextMenuHandlers\Glary Utilities	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ContextHandler.CContextMenu\ = "CContextMenu Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ContextHandler.CContextMenu\CLSID\ = "{B3C418F8-922B-4faf-915E-59BC14448CF7}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B3C418F8-922B-4faf-915E-59BC14448CF7}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52C0F28-8D4C-4886-965C-0A772490064E}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52C0F28-8D4C-4886-965C-0A772490064E}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{FD50332F-185B-4D3C-B921-E0B65E547F28}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shellex\ContextMenuHandlers\	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\lnkfile\shellex\ContextMenuHandlers\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ContextHandler.CContextMenu.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ContextHandler.CContextMenu	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\lnkfile\shellex	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ContextHandler.CContextMenu.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ContextHandler.CContextMenu.1\ = "CContextMenu Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shellex\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ContextHandler.CContextMenu\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ContextHandler.CContextMenu\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B3C418F8-922B-4faf-915E-59BC14448CF7}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52C0F28-8D4C-4886-965C-0A772490064E}\1.0\ = "ContextHandler 1.0 ÀàÐÍ¿â"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52C0F28-8D4C-4886-965C-0A772490064E}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B3C418F8-922B-4faf-915E-59BC14448CF7}\ProgID\ = "ContextHandler.CContextMenu.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{FD50332F-185B-4D3C-B921-E0B65E547F28}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{FD50332F-185B-4D3C-B921-E0B65E547F28}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\lnkfile\shellex\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\Glary Utilities	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B52C0F28-8D4C-4886-965C-0A772490064E}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0ef6c40c1a9b7972cd632467d993a91bcabadcc5e0dc625b9f745e3f1a565201.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shellex\ContextMenuHandlers\Glary Utilities\ = "{B3C418F8-922B-4faf-915E-59BC14448CF7}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shellex\ContextMenuHandlers\Glary Utilities\ = "{B3C418F8-922B-4faf-915E-59BC14448CF7}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\ContextHandler.DLL	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B3C418F8-922B-4faf-915E-59BC14448CF7}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{FD50332F-185B-4D3C-B921-E0B65E547F28}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{FD50332F-185B-4D3C-B921-E0B65E547F28}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B3C418F8-922B-4faf-915E-59BC14448CF7}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{FD50332F-185B-4D3C-B921-E0B65E547F28}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shellex\ContextMenuHandlers	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{A805009D-B902-439A-8E64-26EE3507A12E}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\ContextHandler.DLL\AppID = "{A805009D-B902-439A-8E64-26EE3507A12E}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B3C418F8-922B-4faf-915E-59BC14448CF7}\VersionIndependentProgID\ = "ContextHandler.CContextMenu"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B3C418F8-922B-4faf-915E-59BC14448CF7}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B3C418F8-922B-4faf-915E-59BC14448CF7}\TypeLib\ = "{B52C0F28-8D4C-4886-965C-0A772490064E}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\Glary Utilities\ = "{B3C418F8-922B-4faf-915E-59BC14448CF7}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ContextHandler.CContextMenu\CurVer\ = "ContextHandler.CContextMenu.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B3C418F8-922B-4faf-915E-59BC14448CF7}\Programmable	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\*\shellex\ContextMenuHandlers	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shellex\ContextMenuHandlers\Glary Utilities	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\Glary Utilities\ = "{B3C418F8-922B-4faf-915E-59BC14448CF7}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{FD50332F-185B-4D3C-B921-E0B65E547F28}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\*\shellex	regsvr32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3936	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4092 wrote to memory of 3936	4092	regsvr32.exe	90
PID 4092 wrote to memory of 3936	4092	regsvr32.exe	90
PID 4092 wrote to memory of 3936	4092	regsvr32.exe	90

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0ef6c40c1a9b7972cd632467d993a91bcabadcc5e0dc625b9f745e3f1a565201.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4092
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\0ef6c40c1a9b7972cd632467d993a91bcabadcc5e0dc625b9f745e3f1a565201.dll
  2⤵
  - Loads dropped DLL
  - Modifies system executable filetype association
  - Drops file in Program Files directory
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  PID:3936

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

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/3936-1-0x0000000075250000-0x0000000075273000-memory.dmp

Filesize
140KB

Download
memory/3936-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3936-6-0x0000000075250000-0x0000000075273000-memory.dmp

Filesize
140KB

Download
memory/3936-7-0x0000000075250000-0x0000000075273000-memory.dmp

Filesize
140KB

Download
memory/3936-9-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads