zloader | 0889271c721391d625a19391275f0e6bf244a5548a1a6eb673c6e16a48e960e1

Analysis

max time kernel
145s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-10-2024 02:56

Target

0889271c721391d625a19391275f0e6bf244a5548a1a6eb673c6e16a48e960e1.dll
Size

170KB
MD5

7339d426a3968dbfcd9f1f6043f2d91f
SHA1

af40aa784ab77899200410ea45809cac3db909a0
SHA256

0889271c721391d625a19391275f0e6bf244a5548a1a6eb673c6e16a48e960e1
SHA512

04ec77928e5a4b62bf75a4613ba105e43a2a58458cb8d07a32055014987b14f0c8b5e72d48ca664c5efbc34270b549a9ca08e7b36487a6c574feacc920b83bfa
SSDEEP

3072:CM6/5WHoRkeQilLJWs+XSpo66ftDdgf6Q7e7Ca4vR1ECBLMK9pb6r9BhMTvPhbQn:kYHriRJeeo6st9Ae7HI1iKHUnudrW

Score

10^/10

Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader

Adds Run key to start application 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

Processes:

msiexec.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobo = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Koobru\\caaq.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

regsvr32.exe

description pid process target process

PID 668 set thread context of 4800 668 regsvr32.exe msiexec.exe

description	pid	process	target process
PID 668 set thread context of 4800	668	regsvr32.exe	msiexec.exe

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.

System Language Discovery

Processes:

regsvr32.exemsiexec.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 4800 msiexec.exe
Token: SeSecurityPrivilege 4800 msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	4800	msiexec.exe
Token: SeSecurityPrivilege	4800	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

regsvr32.exeregsvr32.exe

description	pid	process	target process
PID 1772 wrote to memory of 668	1772	regsvr32.exe	regsvr32.exe
PID 1772 wrote to memory of 668	1772	regsvr32.exe	regsvr32.exe
PID 1772 wrote to memory of 668	1772	regsvr32.exe	regsvr32.exe
PID 668 wrote to memory of 4800	668	regsvr32.exe	msiexec.exe
PID 668 wrote to memory of 4800	668	regsvr32.exe	msiexec.exe
PID 668 wrote to memory of 4800	668	regsvr32.exe	msiexec.exe
PID 668 wrote to memory of 4800	668	regsvr32.exe	msiexec.exe
PID 668 wrote to memory of 4800	668	regsvr32.exe	msiexec.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0889271c721391d625a19391275f0e6bf244a5548a1a6eb673c6e16a48e960e1.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1772
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\0889271c721391d625a19391275f0e6bf244a5548a1a6eb673c6e16a48e960e1.dll
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:668
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4800