23a973803319125f2ddb44255a9c43fa6fa5a1cf155dbf589487baeb85c0d223

Analysis

max time kernel
120s
max time network
101s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
15/07/2024, 01:15

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General

Target

550d2c292fd1c231f902c31571e507b0N.exe
Size

156KB
MD5

550d2c292fd1c231f902c31571e507b0
SHA1

daf17108fb77c91874df6b19aafc875e0f7e14ec
SHA256

23a973803319125f2ddb44255a9c43fa6fa5a1cf155dbf589487baeb85c0d223
SHA512

e1f20ec423a22dd6c086e07e89d9375ac94183eefa70081e71d07171ddb1b0c6f7eafca785441cb597a59ea791127befc2b962920dd6e671871647bff695cce0
SSDEEP

3072:QkvF+OOUYjo0i2JdvIArAVMBWfvgfJYraeL/qHQl:TF+Fo2JxeMw3g42HQl

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
2900	svchost.exe

Loads dropped DLL 2 IoCs

pid	Process
2584	550d2c292fd1c231f902c31571e507b0N.exe
2584	550d2c292fd1c231f902c31571e507b0N.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\d698a263 = "C:\\Windows\\apppatch\\svchost.exe"	550d2c292fd1c231f902c31571e507b0N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\d698a263 = "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	550d2c292fd1c231f902c31571e507b0N.exe
File created	C:\Windows\apppatch\svchost.exe	550d2c292fd1c231f902c31571e507b0N.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe
2900	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2584	550d2c292fd1c231f902c31571e507b0N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2584 wrote to memory of 2900	2584	550d2c292fd1c231f902c31571e507b0N.exe	29
PID 2584 wrote to memory of 2900	2584	550d2c292fd1c231f902c31571e507b0N.exe	29
PID 2584 wrote to memory of 2900	2584	550d2c292fd1c231f902c31571e507b0N.exe	29
PID 2584 wrote to memory of 2900	2584	550d2c292fd1c231f902c31571e507b0N.exe	29

C:\Users\Admin\AppData\Local\Temp\550d2c292fd1c231f902c31571e507b0N.exe
"C:\Users\Admin\AppData\Local\Temp\550d2c292fd1c231f902c31571e507b0N.exe"
1⤵
- Loads dropped DLL
- Modifies WinLogon
- Drops file in Windows directory
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2584
- C:\Windows\apppatch\svchost.exe
  "C:\Windows\apppatch\svchost.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Modifies WinLogon
  - Suspicious behavior: EnumeratesProcesses
  PID:2900

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

\Windows\AppPatch\svchost.exe

Filesize
156KB

MD5
1499f8ff4d8852c6f0688ecd8ddbb93d

SHA1
8b2f397a12c1b6397d5701030a5f432ec857c0b0

SHA256
0f5fa8f9040ef211355ae9b7b268d5ece7e47d625c7d2d86b1c281705c3a8c1c

SHA512
80085d464135be9bce00d4ac16929249e4be3bc96a49df3a13f8fb4b660e1027c88e6c6c91a313b4bd5bfc10d0f968259a75201ffcd8ee5d694891b90e182e55

Download Submit
memory/2584-13-0x0000000000BC0000-0x0000000000BF0000-memory.dmp

Filesize
192KB

Download
memory/2900-22-0x00000000002C0000-0x0000000000306000-memory.dmp

Filesize
280KB

Download
memory/2900-24-0x00000000002C0000-0x0000000000306000-memory.dmp

Filesize
280KB

Download
memory/2900-20-0x00000000002C0000-0x0000000000306000-memory.dmp

Filesize
280KB

Download
memory/2900-18-0x00000000002C0000-0x0000000000306000-memory.dmp

Filesize
280KB

Download
memory/2900-16-0x00000000002C0000-0x0000000000306000-memory.dmp

Filesize
280KB

Download
memory/2900-14-0x00000000002C0000-0x0000000000306000-memory.dmp

Filesize
280KB

Download
memory/2900-25-0x0000000000330000-0x000000000037A000-memory.dmp

Filesize
296KB

Download
memory/2900-27-0x0000000000330000-0x000000000037A000-memory.dmp

Filesize
296KB

Download
memory/2900-29-0x0000000000330000-0x000000000037A000-memory.dmp

Filesize
296KB

Download
memory/2900-32-0x0000000000330000-0x000000000037A000-memory.dmp

Filesize
296KB

Download
memory/2900-34-0x0000000000330000-0x000000000037A000-memory.dmp

Filesize
296KB

Download
memory/2900-35-0x0000000000330000-0x000000000037A000-memory.dmp

Filesize
296KB

Download