4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2

Analysis

max time kernel
120s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21/09/2024, 16:37

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General

Target

4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2N.exe
Size

150KB
MD5

1edd9fefd273e84373cfa1a1aed70150
SHA1

af7e8b870b6793b173d0508db6b31363c8fde15e
SHA256

4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2
SHA512

8cd0158cee08a6e090f45b864c476914f442beb8a05584e91e46d49d69fc7c239b5b3f858a73be0e74b92f8df713ccb0fda3bc68cadd0a129e03a207f46787e8
SSDEEP

3072:TuuczBGY3j4nLXhfRf70MCRRb85TFcMo7xQGHMOfAVTzXW:TlcEY3iLXXgvRG5TFZoFQaMrHX

Score

10^/10

discovery persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\apppatch\\svchost.exe,"	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4600	svchost.exe

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\f235c6d7 = "C:\\Windows\\apppatch\\svchost.exe"	4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\f235c6d7 = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\apppatch\svchost.exe	4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2N.exe
File created	C:\Windows\apppatch\svchost.exe	4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2N.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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe
4600	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2948	4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 4600	2948	4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2N.exe	82
PID 2948 wrote to memory of 4600	2948	4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2N.exe	82
PID 2948 wrote to memory of 4600	2948	4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2N.exe	82

C:\Users\Admin\AppData\Local\Temp\4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2N.exe
"C:\Users\Admin\AppData\Local\Temp\4c71a700f5ce3e4e0c1373a356307538df8ce4112eac9df643a8f27c0d9694f2N.exe"
1⤵
- Modifies WinLogon
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\apppatch\svchost.exe
  "C:\Windows\apppatch\svchost.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Modifies WinLogon
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\apppatch\svchost.exe

Filesize
150KB

MD5
1dd86c39ffb08af1fb1d0a9615bbd69d

SHA1
69243b0f5d8b8e6eecc6b84c6eddd67d6aac6c5b

SHA256
9e8cceb86b0329d343cdcb05ff5e3f0857728f5b528a6726de4d562c986256bc

SHA512
c99368c854123fbde495fb64d988dab16d76ea7e80e92273a3c1a4e68d989a997e4f5fbe86d66947c533afe6e20ee02f3aff26c8f12d9aacebc3188649f1d76c

Download Submit
memory/2948-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2948-1-0x0000000002190000-0x00000000021C9000-memory.dmp

Filesize
228KB

Download
memory/2948-2-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2948-0-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2948-15-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2948-14-0x0000000002190000-0x00000000021C9000-memory.dmp

Filesize
228KB

Download
memory/4600-16-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4600-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4600-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4600-18-0x0000000002730000-0x0000000002776000-memory.dmp

Filesize
280KB

Download
memory/4600-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4600-20-0x0000000002B00000-0x0000000002B4A000-memory.dmp

Filesize
296KB

Download
memory/4600-22-0x0000000002B00000-0x0000000002B4A000-memory.dmp

Filesize
296KB

Download
memory/4600-24-0x0000000002B00000-0x0000000002B4A000-memory.dmp

Filesize
296KB

Download
memory/4600-27-0x0000000002B00000-0x0000000002B4A000-memory.dmp

Filesize
296KB

Download