035ed5fcdd134622ded390da86e37ffac971905351523824cfb9944a3a71d81d

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15/12/2024, 21:53

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General

Target

035ed5fcdd134622ded390da86e37ffac971905351523824cfb9944a3a71d81d.dll
Size

1.4MB
MD5

3b97ff9df423e25e55e619ab25aec98d
SHA1

3abf7065c456f1f0f731492b085709e17b8bad37
SHA256

035ed5fcdd134622ded390da86e37ffac971905351523824cfb9944a3a71d81d
SHA512

409635d198d5732094dd1e7b99d0386f8fe9d9fe710cfc6b5565de3a42c24b6ca7196f63192a34ef59969f5c52cd010944cd713e0af0f6f1fc52c0c3315893f5
SSDEEP

24576:SKit4aTOnCoUHbYbDzjJcvvNmIMlSE/p/SZjAygfc87LnwgT69gvmzmTWb:Bit7Onr8YVyNmdUEJSpkfvQgTsgvmB

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4576	regsvr32mgr.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\regsvr32mgr.exe	regsvr32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3564-1-0x00000000750E0000-0x000000007549A000-memory.dmp	upx
behavioral2/files/0x000c000000023b25-3.dat	upx
behavioral2/memory/4576-5-0x0000000000400000-0x000000000045B000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3688	4576	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 2 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32mgr.exe

Modifies registry class 62 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnErrorLookup.VesnErrorLookup.1.0\CLSID\ = "{653E37B1-9233-4435-96A2-60BAAD136F83}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnErrorLookup.VesnErrorLookup\CurVer\ = "VesnErrorLookup.VesnErrorLookup.1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\ExtendedErrors	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\035ed5fcdd134622ded390da86e37ffac971905351523824cfb9944a3a71d81d.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnDB.Net\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\VersionIndependentProgID\ = "VesnDB.Net Provider"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{844B00E1-3509-4380-9963-9D58E98E5AEC}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnErrorLookup.VesnErrorLookup.1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\035ed5fcdd134622ded390da86e37ffac971905351523824cfb9944a3a71d81d.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\TypeLib\ = "{844B00E1-3509-4380-9963-9D58E98E5AEC}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{844B00E1-3509-4380-9963-9D58E98E5AEC}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{844B00E1-3509-4380-9963-9D58E98E5AEC}\1.0\ = "VesnDBClient Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnErrorLookup.VesnErrorLookup	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnDB.Net	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\OLE DB Provider	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\OLE DB Provider\ = "VesnDB.Net Provider"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnDB.Net\CLSID\ = "{DB000001-1979-2001-2013-121388DB0001}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{844B00E1-3509-4380-9963-9D58E98E5AEC}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{DB000001-1979-2001-2013-121388DB000A}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\VesnDB.DLL	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnErrorLookup.VesnErrorLookup\CLSID\ = "{653E37B1-9233-4435-96A2-60BAAD136F83}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnDB.Net\ = "VesnDB.Net Provider"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnDB.Net\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnErrorLookup.VesnErrorLookup\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnDB.Net.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\ExtendedErrors\{653E37B1-9233-4435-96A2-60BAAD136F83}\ = "VesnDB.Net Provider Error Lookup Service"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{844B00E1-3509-4380-9963-9D58E98E5AEC}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{844B00E1-3509-4380-9963-9D58E98E5AEC}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\035ed5fcdd134622ded390da86e37ffac971905351523824cfb9944a3a71d81d.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\ProgID\ = "VesnErrorLookup.VesnErrorLookup.1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnDB.Net.1\ = "VesnDB.Net Provider"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{844B00E1-3509-4380-9963-9D58E98E5AEC}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\VesnDB.DLL\AppID = "{DB000001-1979-2001-2013-121388DB000A}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\ = "VesnErrorLookup Object"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnDB.Net.1\CLSID\ = "{DB000001-1979-2001-2013-121388DB0001}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{844B00E1-3509-4380-9963-9D58E98E5AEC}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnErrorLookup.VesnErrorLookup.1.0\ = "VesnErrorLookup Object"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnErrorLookup.VesnErrorLookup\ = "VesnErrorLookup Object"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnErrorLookup.VesnErrorLookup\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\VersionIndependentProgID\ = "VesnErrorLookup.VesnErrorLookup"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnErrorLookup.VesnErrorLookup.1.0\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\ = "VesnDB.Net"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\ExtendedErrors\{653E37B1-9233-4435-96A2-60BAAD136F83}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{DB000001-1979-2001-2013-121388DB000A}\ = "VesnDB"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\InprocServer32\ThreadingModel = "apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{653E37B1-9233-4435-96A2-60BAAD136F83}\AppID = "{844B00E1-3509-4380-9963-9D58E98E5AEC}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnDB.Net.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\AppID = "{844B00E1-3509-4380-9963-9D58E98E5AEC}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{844B00E1-3509-4380-9963-9D58E98E5AEC}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\VesnDB.Net\CurVer\ = "VesnDB.Net.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\ProgID\ = "VesnDB.Net.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DB000001-1979-2001-2013-121388DB0001}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{844B00E1-3509-4380-9963-9D58E98E5AEC}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3564	regsvr32.exe
3564	regsvr32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2588 wrote to memory of 3564	2588	regsvr32.exe	83
PID 2588 wrote to memory of 3564	2588	regsvr32.exe	83
PID 2588 wrote to memory of 3564	2588	regsvr32.exe	83
PID 3564 wrote to memory of 4576	3564	regsvr32.exe	84
PID 3564 wrote to memory of 4576	3564	regsvr32.exe	84
PID 3564 wrote to memory of 4576	3564	regsvr32.exe	84

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\035ed5fcdd134622ded390da86e37ffac971905351523824cfb9944a3a71d81d.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2588
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\035ed5fcdd134622ded390da86e37ffac971905351523824cfb9944a3a71d81d.dll
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3564
- - C:\Windows\SysWOW64\regsvr32mgr.exe
    C:\Windows\SysWOW64\regsvr32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4576
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4576 -s 264
      4⤵
      Program crash
      PID:3688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4576 -ip 4576
1⤵
PID:3188

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

C:\Windows\SysWOW64\regsvr32mgr.exe

Filesize
105KB

MD5
dfb5daabb95dcfad1a5faf9ab1437076

SHA1
4a199569a9b52911bee7fb19ab80570cc5ff9ed1

SHA256
54282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0

SHA512
5d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8

Download Submit
memory/3564-1-0x00000000750E0000-0x000000007549A000-memory.dmp

Filesize
3.7MB

Download
memory/4576-6-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/4576-5-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download