797c3d51bb7e75222b51bf928f58781c55e92ba1fd654c310d852fb447c30322

Analysis

max time kernel
178s
max time network
160s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31/12/2023, 14:25

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General

Target

39bdc80974f59b6d3b892d15a83f65ed.exe
Size

13KB
MD5

39bdc80974f59b6d3b892d15a83f65ed
SHA1

4679f8509987ae0e9f82c94b38357374b68ed27e
SHA256

797c3d51bb7e75222b51bf928f58781c55e92ba1fd654c310d852fb447c30322
SHA512

4e6e624aa624f786eea81f3e7ed4fc0e01ae790fe4ce3764352d296773a9c0a2f66012a8c03cb064d1ab59897636ed56a35b8e3cfc4ba124209f949e28d9182f
SSDEEP

384:p9/kjXIS4GmRH4eGXWhpLbxEUanRNFLuGQh/iRvxwvKlpIt:pejzTmV4mpLaRXuGtxms

Score

10^/10

persistence upx

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\C:\Windows\Fonts\supkvwhj.dll = "{4F72F83A-1C16-444C-8821-D01FF4759555}"	39bdc80974f59b6d3b892d15a83f65ed.exe

Deletes itself 1 IoCs

pid	Process
2148	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
1716	39bdc80974f59b6d3b892d15a83f65ed.exe
2188	regsvr32.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1716-1-0x0000000000400000-0x0000000000410000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Fonts\supkvwhj.tmp	39bdc80974f59b6d3b892d15a83f65ed.exe
File opened for modification	C:\Windows\Fonts\SG09124.dat	39bdc80974f59b6d3b892d15a83f65ed.exe

Modifies registry class 46 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{558EDF92-57A1-438F-B8FF-97A8FE12F636}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{558EDF92-57A1-438F-B8FF-97A8FE12F636}\1.0\HELPDIR\ = "C:\\Windows\\Fonts"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Sg.sgatl.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Sg.sgatl\ = "sgatl Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}\ = "sgatl Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{558EDF92-57A1-438F-B8FF-97A8FE12F636}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{558EDF92-57A1-438F-B8FF-97A8FE12F636}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Sg.sgatl\CurVer\ = "Sg.sgatl.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}\TypeLib\ = "{558EDF92-57A1-438F-B8FF-97A8FE12F636}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{558EDF92-57A1-438F-B8FF-97A8FE12F636}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{558EDF92-57A1-438F-B8FF-97A8FE12F636}\1.0\ = "sg 1.0 Type Library"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{558EDF92-57A1-438F-B8FF-97A8FE12F636}\1.0\0\win32\ = "C:\\Windows\\Fonts\\supkvwhj.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\ = "Isgatl"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\ = "Isgatl"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Sg.sgatl.1\CLSID\ = "{4F72F83A-1C16-444C-8821-D01FF4759555}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Sg.sgatl	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{558EDF92-57A1-438F-B8FF-97A8FE12F636}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Sg.sgatl\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}\ProgID\ = "Sg.sgatl.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Sg.sgatl.1\ = "sgatl Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Sg.sgatl\CLSID\ = "{4F72F83A-1C16-444C-8821-D01FF4759555}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}\VersionIndependentProgID\ = "Sg.sgatl"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\TypeLib\ = "{558EDF92-57A1-438F-B8FF-97A8FE12F636}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Sg.sgatl.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{CDB466D0-56C2-4555-B4FA-3CF71C946FB8}\TypeLib\ = "{558EDF92-57A1-438F-B8FF-97A8FE12F636}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Sg.sgatl\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4F72F83A-1C16-444C-8821-D01FF4759555}\InprocServer32\ = "C:\\Windows\\Fonts\\supkvwhj.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{558EDF92-57A1-438F-B8FF-97A8FE12F636}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{558EDF92-57A1-438F-B8FF-97A8FE12F636}\1.0\0	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1716	39bdc80974f59b6d3b892d15a83f65ed.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1716	39bdc80974f59b6d3b892d15a83f65ed.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1716	39bdc80974f59b6d3b892d15a83f65ed.exe
1716	39bdc80974f59b6d3b892d15a83f65ed.exe
1716	39bdc80974f59b6d3b892d15a83f65ed.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 2188	1716	39bdc80974f59b6d3b892d15a83f65ed.exe	28
PID 1716 wrote to memory of 2188	1716	39bdc80974f59b6d3b892d15a83f65ed.exe	28
PID 1716 wrote to memory of 2188	1716	39bdc80974f59b6d3b892d15a83f65ed.exe	28
PID 1716 wrote to memory of 2188	1716	39bdc80974f59b6d3b892d15a83f65ed.exe	28
PID 1716 wrote to memory of 2188	1716	39bdc80974f59b6d3b892d15a83f65ed.exe	28
PID 1716 wrote to memory of 2188	1716	39bdc80974f59b6d3b892d15a83f65ed.exe	28
PID 1716 wrote to memory of 2188	1716	39bdc80974f59b6d3b892d15a83f65ed.exe	28
PID 1716 wrote to memory of 2148	1716	39bdc80974f59b6d3b892d15a83f65ed.exe	29
PID 1716 wrote to memory of 2148	1716	39bdc80974f59b6d3b892d15a83f65ed.exe	29
PID 1716 wrote to memory of 2148	1716	39bdc80974f59b6d3b892d15a83f65ed.exe	29
PID 1716 wrote to memory of 2148	1716	39bdc80974f59b6d3b892d15a83f65ed.exe	29

C:\Users\Admin\AppData\Local\Temp\39bdc80974f59b6d3b892d15a83f65ed.exe
"C:\Users\Admin\AppData\Local\Temp\39bdc80974f59b6d3b892d15a83f65ed.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32.exe /s "C:\Windows\Fonts\supkvwhj.dll"
  2⤵
  - Loads dropped DLL
  - Modifies registry class
  PID:2188
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\39BDC8~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2148

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Windows\Fonts\supkvwhj.dll

Filesize
32KB

MD5
9db41596c9d033be8f1bbc599316b5f4

SHA1
8982c6e20d88fcb0994fb505f7b124e14d315ae4

SHA256
711f43c374335a7b00abc248d4f28477e1bf0760e2b8c3f2345b65cd1bf39f71

SHA512
b9e6b2166419f4caa5d38db1d66ee62c0a43213bcb9970f900b91ddb7a424c4733418241e715732653d00042df859d2a7d392f146d0cf3dc3d8e253789ed08c7

Download Submit
memory/1716-1-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1716-11-0x0000000010000000-0x0000000010009000-memory.dmp

Filesize
36KB

Download
memory/1716-20-0x0000000010000000-0x0000000010009000-memory.dmp

Filesize
36KB

Download
memory/2188-9-0x0000000010000000-0x0000000010009000-memory.dmp

Filesize
36KB

Download