b152826d330063f03226d8520edd8c2e9db54ce19a9bdfeca3d600ab7c1e730e

Analysis

max time kernel
157s
max time network
199s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/12/2023, 20:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

1118742a3ebb73e7bfc1d1ffa63bfb28.exe
Size

52KB
MD5

1118742a3ebb73e7bfc1d1ffa63bfb28
SHA1

060e2ad64e3fa0b9b116bf3e42d795db8810a845
SHA256

b152826d330063f03226d8520edd8c2e9db54ce19a9bdfeca3d600ab7c1e730e
SHA512

1f33ee91535b757250a1f431a764d6f9dcc493965baab3ff889f4c9b65b3ef11aa8f1e97e4a1f7c02f1d3e8f827311eb1a7a7149609cbd5e133bb81201271fd2
SSDEEP

384:2vEwuahc3YlWBrrbPrbkDOAuBBQARQk/DjmMkB6rHspHVZX/s:mFVcokBr7NBBQARQk/DCMHs/O

Score

10^/10

persistence

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\gsjdlbog.dll = "{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}"	1118742a3ebb73e7bfc1d1ffa63bfb28.exe

Loads dropped DLL 2 IoCs

pid	Process
4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe
4388	regsvr32.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Fonts\gsjdlbog.tmp	1118742a3ebb73e7bfc1d1ffa63bfb28.exe
File opened for modification	C:\Windows\Fonts\ZT27.nls	1118742a3ebb73e7bfc1d1ffa63bfb28.exe

Modifies registry class 46 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\TypeLib\ = "{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Zt2.zt2atl\CLSID\ = "{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}\ProgID\ = "Zt2.zt2atl.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Zt2.zt2atl.1\ = "zt2atl Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Zt2.zt2atl.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Zt2.zt2atl.1\CLSID\ = "{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Zt2.zt2atl\CurVer\ = "Zt2.zt2atl.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}\VersionIndependentProgID\ = "Zt2.zt2atl"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\ = "Izt2atl"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\ = "Izt2atl"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Zt2.zt2atl\ = "zt2atl Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Zt2.zt2atl\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\TypeLib\ = "{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}\1.0\0\win32\ = "C:\\Windows\\Fonts\\gsjdlbog.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Zt2.zt2atl\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}\InprocServer32\ = "C:\\Windows\\Fonts\\gsjdlbog.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Zt2.zt2atl.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}\1.0\HELPDIR\ = "C:\\Windows\\Fonts"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Zt2.zt2atl	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}\ = "zt2atl Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}\TypeLib\ = "{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{5A7F6439-9DA0-4936-AE06-789D2DFFC4A5}\1.0\ = "zt2 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{EF8ECB3C-7983-4F4A-8321-38A4AADDC74B}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{97D1F8D4-D518-48CA-A6BF-3A25D6B10020}\ProgID	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe
4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe
4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe
4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4248 wrote to memory of 4388	4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe	91
PID 4248 wrote to memory of 4388	4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe	91
PID 4248 wrote to memory of 4388	4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe	91
PID 4248 wrote to memory of 2584	4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe	97
PID 4248 wrote to memory of 2584	4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe	97
PID 4248 wrote to memory of 2584	4248	1118742a3ebb73e7bfc1d1ffa63bfb28.exe	97

C:\Users\Admin\AppData\Local\Temp\1118742a3ebb73e7bfc1d1ffa63bfb28.exe
"C:\Users\Admin\AppData\Local\Temp\1118742a3ebb73e7bfc1d1ffa63bfb28.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:4248
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32.exe /s "C:\Windows\Fonts\gsjdlbog.dll"
  2⤵
  - Loads dropped DLL
  - Modifies registry class
  PID:4388
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\111874~1.EXE > nul
  2⤵
  PID:2584

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

Loading Replay Monitor...

Downloads

C:\Windows\Fonts\gsjdlbog.dll

Filesize
32KB

MD5
222133c78b0bbfb8c2399cce86cc81bf

SHA1
2ed30f3dd20921ee1572ace5cc351515bd6824b5

SHA256
293b870f498ea3cdfe3f7c6a5c87ea7dfd252e91d06a3eb6de433d1a031b7883

SHA512
bebbd0909468530f577a95eba679cd92d2015bb61395e6b049c0c7220fc812d6db4e0f470af643abbdc6541a7721b46713f0bb1f5beeb9f1b147345295407791

Download Submit
memory/4248-8-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/4248-12-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/4388-7-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download