3f63b0136b5afb1e29d8dc6d9755d85139291355ce0889139164bcc87f2ddf38

Analysis

max time kernel
161s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 18:49

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General

Target

353d4e92b98f4ff46a1559f8f2f23e2d.exe
Size

150KB
MD5

353d4e92b98f4ff46a1559f8f2f23e2d
SHA1

525ebc52d796fd8d32a42844ebff603c37cc6641
SHA256

3f63b0136b5afb1e29d8dc6d9755d85139291355ce0889139164bcc87f2ddf38
SHA512

51f88883d1a08c520e747d24dd964440aa1c33250a125511820503ddaf1e5f6240ebf31d791e3a7ae70c3d9883fe86cb699f5b987d1c50794f207cfb55849c56
SSDEEP

3072:VuuczBGY3j4nLXhfRf70MCRRb85TFcMo7xQGHMOfAVTzXW:VlcEY3iLXXgvRG5TFZoFQaMrHX

Score

10^/10

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
1088	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\29aacd9 = "C:\\Windows\\apppatch\\svchost.exe"	353d4e92b98f4ff46a1559f8f2f23e2d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\29aacd9 = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	353d4e92b98f4ff46a1559f8f2f23e2d.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	353d4e92b98f4ff46a1559f8f2f23e2d.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe
1088	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
220	353d4e92b98f4ff46a1559f8f2f23e2d.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 220 wrote to memory of 1088	220	353d4e92b98f4ff46a1559f8f2f23e2d.exe	89
PID 220 wrote to memory of 1088	220	353d4e92b98f4ff46a1559f8f2f23e2d.exe	89
PID 220 wrote to memory of 1088	220	353d4e92b98f4ff46a1559f8f2f23e2d.exe	89

C:\Users\Admin\AppData\Local\Temp\353d4e92b98f4ff46a1559f8f2f23e2d.exe
"C:\Users\Admin\AppData\Local\Temp\353d4e92b98f4ff46a1559f8f2f23e2d.exe"
1⤵
- Modifies WinLogon
- Drops file in Windows directory
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:220
- C:\Windows\apppatch\svchost.exe
  "C:\Windows\apppatch\svchost.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Modifies WinLogon
  - Suspicious behavior: EnumeratesProcesses
  PID:1088

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\apppatch\svchost.exe

Filesize
150KB

MD5
a4498baa5b9733cd14438414d563a98e

SHA1
fed0f0659bccdc8b0ad63a2ea544392fd24e21d6

SHA256
a22cfa593082f6562e3e51a99cc7e7dcbc03ee195444a13c47fadd8f6238b980

SHA512
eddff648c7740098ba090fe902fccc72d327a5abea9c0432146a588eaf89e0df83c84e91c9cf855b2bce0b74a78acbc638af8adcb138d128b6ebe40083909bf8

Download Submit
memory/220-0-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/220-1-0x0000000002190000-0x00000000021C9000-memory.dmp

Filesize
228KB

Download
memory/220-2-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/220-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/220-13-0x0000000002190000-0x00000000021C9000-memory.dmp

Filesize
228KB

Download
memory/1088-17-0x0000000002B00000-0x0000000002B4A000-memory.dmp

Filesize
296KB

Download
memory/1088-15-0x0000000002740000-0x0000000002786000-memory.dmp

Filesize
280KB

Download
memory/1088-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1088-19-0x0000000002B00000-0x0000000002B4A000-memory.dmp

Filesize
296KB

Download
memory/1088-20-0x0000000002B00000-0x0000000002B4A000-memory.dmp

Filesize
296KB

Download
memory/1088-21-0x0000000002B00000-0x0000000002B4A000-memory.dmp

Filesize
296KB

Download
memory/1088-22-0x0000000002B00000-0x0000000002B4A000-memory.dmp

Filesize
296KB

Download
memory/1088-24-0x0000000002B00000-0x0000000002B4A000-memory.dmp

Filesize
296KB

Download
memory/1088-25-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1088-27-0x0000000002B00000-0x0000000002B4A000-memory.dmp

Filesize
296KB

Download