c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 23:34

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General

Target

c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe
Size

152KB
MD5

c68413ba02423ad3d7ae2cd9ebeda7a4
SHA1

1e76981b20ec3e2fa08d6d4b800a81f1034066e8
SHA256

c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc
SHA512

ad627d025b2c89f39851e509b779a4203cd2ee8214908d48b4ec36ccf605e81fb6d0f3534768ac4f38afd1ae6056adc1410bf0ec0bdd7ab3c08708fb0fceb36e
SSDEEP

3072:Fru5SkB2ca09lIqb5nr5JYpQ4O8k99K//RLbyVZtde:5oSkB2R09l9b5ntD4LKS/6de

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
4128	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\a24727bf = "C:\\Windows\\apppatch\\svchost.exe"	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\a24727bf = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4128	svchost.exe
4128	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1536	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1536 wrote to memory of 4128	1536	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe	89
PID 1536 wrote to memory of 4128	1536	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe	89
PID 1536 wrote to memory of 4128	1536	c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe	89

C:\Users\Admin\AppData\Local\Temp\c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe
"C:\Users\Admin\AppData\Local\Temp\c1c3d767c14a480f895a9a9b27f37403a5895e37a330a37c2243c0d91f08a7bc.exe"
1⤵
- Modifies WinLogon
- Drops file in Windows directory
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Windows\apppatch\svchost.exe
  "C:\Windows\apppatch\svchost.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Modifies WinLogon
  - Suspicious behavior: EnumeratesProcesses
  PID:4128

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
152KB

MD5
933c7bd13f69af800e7c825f8ad92416

SHA1
5b7203eeb1cacd2b0b946e1239d5489344bb323c

SHA256
169cee775f2a3245d19d6e72c5f400ee4b61464a9ed149a9e47c709020a6b17e

SHA512
aaba1ab54218b10e5f3f7f4908aff537449ba03f075b7e9376be2f5d1b697ac5c68cca2e10125df6f1b69ea5893813daf6601f572504e649ba88e70dfd9af7cf

Download Submit
memory/1536-0-0x00000000021A0000-0x00000000021D9000-memory.dmp

Filesize
228KB

Download
memory/1536-1-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/1536-11-0x00000000021A0000-0x00000000021D9000-memory.dmp

Filesize
228KB

Download
memory/1536-12-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/4128-13-0x0000000002960000-0x00000000029A6000-memory.dmp

Filesize
280KB

Download
memory/4128-14-0x0000000002AF0000-0x0000000002B3A000-memory.dmp

Filesize
296KB

Download
memory/4128-16-0x0000000002AF0000-0x0000000002B3A000-memory.dmp

Filesize
296KB

Download
memory/4128-17-0x0000000002AF0000-0x0000000002B3A000-memory.dmp

Filesize
296KB

Download
memory/4128-18-0x0000000002AF0000-0x0000000002B3A000-memory.dmp

Filesize
296KB

Download
memory/4128-21-0x0000000002AF0000-0x0000000002B3A000-memory.dmp

Filesize
296KB

Download
memory/4128-22-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download