94248c32e66678cd527ac7143cf134e21e30366c53bd7118d812e7639ae43766

Analysis

max time kernel
117s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
22/08/2024, 16:26

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General

Target

$SYSDIR/gregn50.dll
Size

1.2MB
MD5

294802b3c032055ae12d16722ecfbc37
SHA1

a4cda5d1c43a5c7bfd0e37598a327b28b63a913b
SHA256

b0a11a9b4b81842bbe6fff441c6fe275bfa047ccc8471a497d8acaca152ba71d
SHA512

a7d136c512e1eab24cb7f73410b0dfa180ccee027a01829c018f2923820d154ca54a996d932e7d1785a9e6eecd9853f9a4cbe630d52b3f7deeb1319f3a760d5f
SSDEEP

24576:X31FdEDwifdLjl/9OizZyk3PaT+m2r02RC8Rh23X2TyGgzR3:bdBifNCizZZq9gQ8W3GgzR3

Score

7^/10

discovery upx

Malware Config

Signatures

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral11/memory/2236-0-0x0000000010000000-0x000000001027C000-memory.dmp	upx

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\{F803AE1D-B578-490A-A1FE-38976AD2B625}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4FA44042-1421-46DE-9ACA-A44753FF06C6}\ = "IGridppReport"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C4D3E1B2-EB0A-4D06-B2B2-B9A0E5E5708F}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{5C2FC87F-12F8-4A09-8A4A-792671C03C74}\TypeLib\Version = "5.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{04CEA260-DD00-4954-A81F-F0A201343CB9}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17B23325-7316-4098-9FE3-B5A1C24DB296}\TypeLib\Version = "5.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B753063D-AEBA-4E5E-B53A-F89B68F1F622}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\grpro.GRDisplayViewer.50\CLSID\ = "{613F3AE0-D4EB-4F9F-B750-576C09700351}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7FC1D3A0-693F-486E-BDF3-02E98F50F9F3}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{01056F48-F4AB-4D9F-BE45-614F3313717D}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{60EB191F-5E63-41E7-808F-C66EC7A8EF26}\ = "IGRE2XLSOption"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F5D15E31-FA9A-42BE-BE9C-8688E7D9D6A0}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B753063D-AEBA-4E5E-B53A-F89B68F1F622}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C04A6148-7500-41EF-8062-BD89A0A92D40}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BB12AEBD-5839-4A5E-9944-65B6798381C8}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E2F421D7-73FA-462F-9BF5-7DA3E512CA00}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{488B2328-67C0-42D1-A133-303FF60D8AE2}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C3112650-36D2-4928-9D6C-C0A21CCC1EBA}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C4D3E1B2-EB0A-4D06-B2B2-B9A0E5E5708F}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{273631DD-1CAC-49E9-92EE-584F48921A1E}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F623A5E8-4AE4-494E-975B-3C5404428625}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B753063D-AEBA-4E5E-B53A-F89B68F1F622}\TypeLib\Version = "5.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B753063D-AEBA-4E5E-B53A-F89B68F1F622}\ = "IGRGroupFooter"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E2F421D7-73FA-462F-9BF5-7DA3E512CA00}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{72A79692-2F9E-4FEC-92CC-6B4A7375A3D6}\TypeLib\Version = "5.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{36971202-D715-4AFC-83D4-7C0DDD8872E8}\ = "IGRGroupSection"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{C04A6143-7500-41EF-8062-BD89A0A92D40}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F623A5E8-4AE4-494E-975B-3C5404428625}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{81727F33-8D8C-45DC-B525-07ABDC5FB652}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A9E920A1-C722-4A81-9FCF-4D5EBFFA21F4}\ = "_IGRPrintViewerEvents"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6A246AC9-1715-40B6-A483-DE9F3E8DA43C}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{01056F48-F4AB-4D9F-BE45-614F3313717D}\TypeLib\Version = "5.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{60EB191F-5E63-41E7-807F-C66EC7A8EF26}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4ADC81A1-D181-45B7-9258-FB33B2125962}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7FC1D3A0-693F-486E-BDF3-02E98F50F9F3}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F4AA885F-AF9C-4032-A65A-F3DFD458C289}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{81727F33-8D8C-45DC-B525-07ABDC5FB652}\ = "IGRE2IMGOption"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{81727F33-8D8C-45DC-B525-07ABDC5FB652}\ = "IGRE2IMGOption"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{613F3AE0-D4EB-4F9F-B750-576C09700351}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{07120975-B963-4F85-9B4D-0AC979FEBB5D}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E66EBBF5-ED8D-44E7-8A6C-E6579ADCC7D4}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{42F6AF5F-5FC4-4F44-9812-1FBD9224CE2C}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{42F6AF5F-5FC4-4F44-9812-1FBD9224CE2C}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{488B2328-67C0-42D1-A133-303FF60D8AE2}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{A9E920A1-C722-4A81-9FCF-4D5EBFFA21F4}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{72A79692-2F9E-4FEC-92CC-6B4A7375A3D6}\TypeLib\Version = "5.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F00CE27D-D1E3-4EF6-9877-BF3233EBF551}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F82DF93F-5FF2-40A6-B50B-016666EC08CA}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{273631DD-1CAC-49E9-92EE-584F48921A1E}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{5C2FC87F-12F8-4A09-8A4A-792671C03C74}\TypeLib\Version = "5.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{48636E6A-758E-46C0-B37A-C2A2CAC9469A}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{28845384-ED9F-4D2E-986E-D52AC37A108F}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{CDAA7F5B-E100-49B7-93F2-6B66FC93BE55}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{17B23325-7316-4098-9FE3-B5A1C24DB296}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{273631DD-1CAC-49E9-92EE-584F48921A1E}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{330F80F5-4568-4F70-BFCB-683D3B90FEBB}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7FC1D3A0-693F-486E-BDF3-02E98F50F9F3}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3BB506AB-425B-43B0-BC82-28A61FCCF686}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F623A5E8-4AE4-494E-975B-3C5404428625}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{81727F33-8D8C-45DC-B525-07ABDC5FB652}\TypeLib\Version = "5.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C4ACA069-B92C-401A-B175-354E00D538D9}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EBF161F0-F347-441A-9C0D-0ACA7824793B}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{273631DD-1CAC-49E9-92EE-584F48921A1E}\TypeLib\ = "{715CBE0F-4F50-46EF-B009-CACED3A5C868}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{0574ABEB-B0DA-465D-9EB7-286C00F3628F}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 2236	2196	regsvr32.exe	30
PID 2196 wrote to memory of 2236	2196	regsvr32.exe	30
PID 2196 wrote to memory of 2236	2196	regsvr32.exe	30
PID 2196 wrote to memory of 2236	2196	regsvr32.exe	30
PID 2196 wrote to memory of 2236	2196	regsvr32.exe	30
PID 2196 wrote to memory of 2236	2196	regsvr32.exe	30
PID 2196 wrote to memory of 2236	2196	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\gregn50.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\$SYSDIR\gregn50.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2236

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

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Downloads

memory/2236-0-0x0000000010000000-0x000000001027C000-memory.dmp

Filesize
2.5MB

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