5e2b7ee91606a8a2327f731f4d863c505daa70a9eb10ca0700529f6aa4fd61a8

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
01/08/2024, 21:33

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General

Target

acpdfcrdb.dll
Size

232KB
MD5

ea43d961edc402597368a89bc7ce9c4c
SHA1

d25a8028e8a4a398f6daec04ddea90e0fb27fb17
SHA256

14b3ce6f455b7cfe9aca5d5cc49cfaff19f04049d2a1867f1e0b8d048885b4ca
SHA512

41b42b1990f6bc2472112f69ac8b4f61266ce253ccb45895b43362f153c18eef5fabe0738749c9efd9ef847871b7188973f4510f1ab93c4a6463faf2b405ede1
SSDEEP

3072:fxTmR+uWzw8Djj9RfbzWa1vRpunZqqSgIcdo2dBGDzzD2y7:eWE8DjJZ/WaFRmCcHW7p7

Score

3^/10

discovery

Malware Config

Signatures

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 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C18ADCBB-34DE-4BA2-B14D-D887F51FC81A}\TypeLib\ = "{DCDF34D8-7739-4C0B-969F-429FF45E18E6}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{AE261443-1B8E-4E44-90A4-36144C0E0BEE}\ = "IacField"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acDatabase.1\CLSID\ = "{E18B94CE-8F98-46A6-82B2-50DBE4617BDA}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acTable.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{84AC6F6D-C381-4A35-9F2E-ABF7E9902ED2}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acList.1\ = "acList Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C359A73D-A3DE-4E1C-A884-331F20791396}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DCDF34D8-7739-4C0B-969F-429FF45E18E6}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9F9265B1-B6AB-44F5-8B70-9E2FD4824A6E}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acDatabase.1\ = "acDatabase Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7748F747-3381-4555-9235-E9DF1264A8E3}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acList\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C359A73D-A3DE-4E1C-A884-331F20791396}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DCDF34D8-7739-4C0B-969F-429FF45E18E6}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acField\ = "acField Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acList\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acSelectFieldDlg.1\CLSID\ = "{C359A73D-A3DE-4E1C-A884-331F20791396}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acDatabase\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E18B94CE-8F98-46A6-82B2-50DBE4617BDA}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E18B94CE-8F98-46A6-82B2-50DBE4617BDA}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{84AC6F6D-C381-4A35-9F2E-ABF7E9902ED2}\TypeLib\ = "{DCDF34D8-7739-4C0B-969F-429FF45E18E6}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acField	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C359A73D-A3DE-4E1C-A884-331F20791396}\ProgID\ = "AcPdfCrDb.acSelectFieldDlg.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6ACC5896-010E-4827-974C-9B9E29DE1DE4}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{AE261443-1B8E-4E44-90A4-36144C0E0BEE}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{AE261443-1B8E-4E44-90A4-36144C0E0BEE}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6ACC5896-010E-4827-974C-9B9E29DE1DE4}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acTable.1\CLSID\ = "{84AC6F6D-C381-4A35-9F2E-ABF7E9902ED2}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acTable\ = "acTable Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acTable\CurVer\ = "AcPdfCrDb.acTable.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5B0E413-0CF3-4CD2-8F4E-A13F3406A8C8}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5B0E413-0CF3-4CD2-8F4E-A13F3406A8C8}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C359A73D-A3DE-4E1C-A884-331F20791396}\VersionIndependentProgID\ = "AcPdfCrDb.acSelectFieldDlg"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DCDF34D8-7739-4C0B-969F-429FF45E18E6}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C18ADCBB-34DE-4BA2-B14D-D887F51FC81A}\ = "IacTable"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9F9265B1-B6AB-44F5-8B70-9E2FD4824A6E}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0AD8D6D3-1386-4EBF-90B5-AB52437C012C}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{84AC6F6D-C381-4A35-9F2E-ABF7E9902ED2}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DCDF34D8-7739-4C0B-969F-429FF45E18E6}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{AE261443-1B8E-4E44-90A4-36144C0E0BEE}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{AE261443-1B8E-4E44-90A4-36144C0E0BEE}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9F9265B1-B6AB-44F5-8B70-9E2FD4824A6E}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C18ADCBB-34DE-4BA2-B14D-D887F51FC81A}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0AD8D6D3-1386-4EBF-90B5-AB52437C012C}\ = "IacSelectFieldDlg"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acDatabase\CurVer\ = "AcPdfCrDb.acDatabase.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E18B94CE-8F98-46A6-82B2-50DBE4617BDA}\ = "acDatabase Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{84AC6F6D-C381-4A35-9F2E-ABF7E9902ED2}\VersionIndependentProgID\ = "AcPdfCrDb.acTable"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{84AC6F6D-C381-4A35-9F2E-ABF7E9902ED2}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C18ADCBB-34DE-4BA2-B14D-D887F51FC81A}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5B0E413-0CF3-4CD2-8F4E-A13F3406A8C8}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\acpdfcrdb.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6ACC5896-010E-4827-974C-9B9E29DE1DE4}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{AE261443-1B8E-4E44-90A4-36144C0E0BEE}\TypeLib\ = "{DCDF34D8-7739-4C0B-969F-429FF45E18E6}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E18B94CE-8F98-46A6-82B2-50DBE4617BDA}\VersionIndependentProgID\ = "AcPdfCrDb.acDatabase"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E18B94CE-8F98-46A6-82B2-50DBE4617BDA}\TypeLib\ = "{DCDF34D8-7739-4C0B-969F-429FF45E18E6}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acTable\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acField.1\ = "acField Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5B0E413-0CF3-4CD2-8F4E-A13F3406A8C8}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9F9265B1-B6AB-44F5-8B70-9E2FD4824A6E}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C359A73D-A3DE-4E1C-A884-331F20791396}\TypeLib\ = "{DCDF34D8-7739-4C0B-969F-429FF45E18E6}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DCDF34D8-7739-4C0B-969F-429FF45E18E6}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{DCDF34D8-7739-4C0B-969F-429FF45E18E6}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acTable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AcPdfCrDb.acTable\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{84AC6F6D-C381-4A35-9F2E-ABF7E9902ED2}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\acpdfcrdb.dll"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2976 wrote to memory of 2812	2976	regsvr32.exe	30
PID 2976 wrote to memory of 2812	2976	regsvr32.exe	30
PID 2976 wrote to memory of 2812	2976	regsvr32.exe	30
PID 2976 wrote to memory of 2812	2976	regsvr32.exe	30
PID 2976 wrote to memory of 2812	2976	regsvr32.exe	30
PID 2976 wrote to memory of 2812	2976	regsvr32.exe	30
PID 2976 wrote to memory of 2812	2976	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\acpdfcrdb.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2976
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\acpdfcrdb.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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