237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64

Analysis

max time kernel
166s
max time network
186s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 13:35

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General

Target

237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe
Size

114KB
MD5

f83a3d1315baf689b92ad2f3a82e2a79
SHA1

5a72729fc386e71c4c732c5f01ca6292f9c25dee
SHA256

237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64
SHA512

b494fdbbf76ad0506b352303c6faf11f596157cb059a5080a98a18ea0b2ce64622e2596ca9a4c02f475cd619b26652af3c398a9c7f83ed5f93ba9e344301cf35
SSDEEP

3072:ft9izXjZqKehMDPfGzOKmNAthKFNHmJbU2out4:ft92X9qKeYHGMNAyFeU2oS4

Score

9^/10

upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0006000000022e5c-139.dat	acprotect
behavioral2/files/0x0006000000022e5c-140.dat	acprotect

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1552-132-0x0000000000400000-0x000000000043C000-memory.dmp	upx
behavioral2/files/0x0006000000022e5c-139.dat	upx
behavioral2/files/0x0006000000022e5c-140.dat	upx
behavioral2/memory/1552-141-0x0000000000400000-0x000000000043C000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
3376	regsvr32.exe
636	regsvr32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\mswinsck.ocx	237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\win.ini	237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe
File opened for modification	C:\Windows\sys.dat	237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe

Modifies registry class 64 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94A1ADBF-7F8D-4B8A-B3FA-48E69CB4C804}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ = "Microsoft WinSock Control, version 6.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ProgID\ = "MSWinsock.Winsock.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ToolboxBitmap32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3FAF77B7-5DD0-45E7-A92A-8C92F95D2964}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94A1ADBF-7F8D-4B8A-B3FA-48E69CB4C804}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock\CurVer\ = "MSWinsock.Winsock.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ = "IMSWinsockControl"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{52DAF8C9-8861-47A8-BC17-077666A2342A}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\~DFA448.tmp"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94A1ADBF-7F8D-4B8A-B3FA-48E69CB4C804}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Version	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories\{40FC6ED5-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{52DAF8C9-8861-47A8-BC17-077666A2342A}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{3FAF77B7-5DD0-45E7-A92A-8C92F95D2964}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94A1ADBF-7F8D-4B8A-B3FA-48E69CB4C804}\ = "Es58.P2P"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\ = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{52DAF8C9-8861-47A8-BC17-077666A2342A}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Es58.P2P	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Control	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\HELPDIR\	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{52DAF8C9-8861-47A8-BC17-077666A2342A}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Es58.P2P\Clsid\ = "{94A1ADBF-7F8D-4B8A-B3FA-48E69CB4C804}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock\CLSID\ = "{248DD896-BB45-11CF-9ABC-0080C7E7B78D}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus\1\ = "132497"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{52DAF8C9-8861-47A8-BC17-077666A2342A}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3FAF77B7-5DD0-45E7-A92A-8C92F95D2964}\ = "_P2P"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94A1ADBF-7F8D-4B8A-B3FA-48E69CB4C804}	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\ = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Es58.P2P\Clsid	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{3FAF77B7-5DD0-45E7-A92A-8C92F95D2964}\ = "P2P"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32\ = "C:\\Windows\\SysWow64\\mswinsck.ocx"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{52DAF8C9-8861-47A8-BC17-077666A2342A}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{3FAF77B7-5DD0-45E7-A92A-8C92F95D2964}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94A1ADBF-7F8D-4B8A-B3FA-48E69CB4C804}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\~DFA448.tmp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSWinsock.Winsock.1\ = "Microsoft WinSock Control, version 6.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib\ = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{52DAF8C9-8861-47A8-BC17-077666A2342A}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\0\win32\ = "C:\\Windows\\SysWow64\\mswinsck.ocx"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ = "IMSWinsockControl"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3FAF77B7-5DD0-45E7-A92A-8C92F95D2964}\TypeLib\ = "{52DAF8C9-8861-47A8-BC17-077666A2342A}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{3FAF77B7-5DD0-45E7-A92A-8C92F95D2964}\ProxyStubClsid\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{94A1ADBF-7F8D-4B8A-B3FA-48E69CB4C804}\Implemented Categories	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3FAF77B7-5DD0-45E7-A92A-8C92F95D2964}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories\{40FC6ED4-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32\ = "C:\\Windows\\SysWow64\\mswinsck.ocx"	regsvr32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1552	237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1552 wrote to memory of 3376	1552	237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe	83
PID 1552 wrote to memory of 3376	1552	237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe	83
PID 1552 wrote to memory of 3376	1552	237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe	83
PID 1552 wrote to memory of 636	1552	237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe	84
PID 1552 wrote to memory of 636	1552	237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe	84
PID 1552 wrote to memory of 636	1552	237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe	84

C:\Users\Admin\AppData\Local\Temp\237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe
"C:\Users\Admin\AppData\Local\Temp\237c756d6926401fc9852102050604d87ce9e05e6d82b50148335150d4092f64.exe"
1⤵
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1552
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32 /s "C:\Windows\system32\mswinsck.ocx"
  2⤵
  - Loads dropped DLL
  - Modifies registry class
  PID:3376
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32 /s "C:\Users\Admin\AppData\Local\Temp\~DFA448.tmp"
  2⤵
  - Loads dropped DLL
  - Modifies registry class
  PID:636

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\~DFA448.tmp

Filesize
48KB

MD5
73e40295ab0e0c740b114b9251042b87

SHA1
e057bc7de709e34e9ae666fdb713708f038af819

SHA256
1c208796cd09557fe2d0a375f30a2feb49b45af8661798ab0046883cd68d54fd

SHA512
883171d6108e1d2a62437a2a37b84b9d33b22737eaead2355bdeccf028e0fbb5491e45087f7c397f58adf4837e43fd3a410c47d78426bf90669d71025e4a6b98

Download Submit
C:\Users\Admin\AppData\Local\Temp\~DFA448.tmp

Filesize
48KB

MD5
73e40295ab0e0c740b114b9251042b87

SHA1
e057bc7de709e34e9ae666fdb713708f038af819

SHA256
1c208796cd09557fe2d0a375f30a2feb49b45af8661798ab0046883cd68d54fd

SHA512
883171d6108e1d2a62437a2a37b84b9d33b22737eaead2355bdeccf028e0fbb5491e45087f7c397f58adf4837e43fd3a410c47d78426bf90669d71025e4a6b98

Download Submit
C:\Windows\SysWOW64\mswinsck.ocx

Filesize
105KB

MD5
9484c04258830aa3c2f2a70eb041414c

SHA1
b242a4fb0e9dcf14cb51dc36027baff9a79cb823

SHA256
bf7e47c16d7e1c0e88534f4ef95e09d0fd821ed1a06b0d95a389b35364b63ff5

SHA512
9d0e9f0d88594746ba41ea4a61a53498619eda596e12d8ec37d01cfe8ceb08be13e3727c83d630a6d9e6d03066f62444bb94ea5a0d2ed9d21a270e612db532a0

Download Submit
C:\Windows\SysWOW64\mswinsck.ocx

Filesize
105KB

MD5
9484c04258830aa3c2f2a70eb041414c

SHA1
b242a4fb0e9dcf14cb51dc36027baff9a79cb823

SHA256
bf7e47c16d7e1c0e88534f4ef95e09d0fd821ed1a06b0d95a389b35364b63ff5

SHA512
9d0e9f0d88594746ba41ea4a61a53498619eda596e12d8ec37d01cfe8ceb08be13e3727c83d630a6d9e6d03066f62444bb94ea5a0d2ed9d21a270e612db532a0

Download Submit
memory/1552-132-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1552-141-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download