20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30/04/2024, 19:49

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General

Target

20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe
Size

204KB
MD5

75f8ce733b4af79554b4b84c643980ad
SHA1

4531f769404ed38bdf19195a1354e4a0ac8b4064
SHA256

20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12
SHA512

b35e4ab5a9d48fb71c8e66d225b4613c4ed0dddf765f6884faeefea03412a1b0ae65c0dfb16cbd247371a182100b2e1f9dffbbfd7b70b06ecc91f20a41cc326d
SSDEEP

3072:UdGaTPrrIGvvyy8dHSi+OcGMrOpOVKdOyMbkrWRdg+E2uEPczTinJhV+p9GEVFU/:OGazIc6TVBMrOpzeJEsuirSGEMpgE

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1508	svchost.exe

Modifies WinLogon 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\7fbc8e3a = "C:\\Windows\\apppatch\\svchost.exe"	20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000_Classes\Local Settings\MuiCache	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe
1508	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1296	20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1296	20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe
Token: SeSecurityPrivilege	1296	20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe
Token: SeSecurityPrivilege	1508	svchost.exe
Token: SeSecurityPrivilege	1508	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 1508	1296	20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe	84
PID 1296 wrote to memory of 1508	1296	20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe	84
PID 1296 wrote to memory of 1508	1296	20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe	84

C:\Users\Admin\AppData\Local\Temp\20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe
"C:\Users\Admin\AppData\Local\Temp\20bf75ec79b517943833f117a12421ff8b31cd4dd1c818f463bb35f0e1753c12.exe"
1⤵
- Modifies WinLogon
- Drops file in Windows directory
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1296
- C:\Windows\apppatch\svchost.exe
  "C:\Windows\apppatch\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1508

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
204KB

MD5
c272d827f33ff53faecdabba68ec4045

SHA1
074b64b71d4fcdb938354a3fa9235391bfed849f

SHA256
09a450b9eb4931904d00881d6bcc298085bde79d5901e1aaf7de16f73dfc24c8

SHA512
9b6bf8e496eceb076d6110631f2b3d1434b2249c8ff4111159cd0d197cfad61405b2deb710db1d1c44cef28cec5a7a93b24ee7b4ab9e82e701508385ed209e58

Download Submit
memory/1296-0-0x00000000021D0000-0x0000000002222000-memory.dmp

Filesize
328KB

Download
memory/1296-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1296-15-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1296-14-0x00000000021D0000-0x0000000002222000-memory.dmp

Filesize
328KB

Download
memory/1508-16-0x0000000002470000-0x000000000251A000-memory.dmp

Filesize
680KB

Download
memory/1508-17-0x0000000002C40000-0x0000000002CF7000-memory.dmp

Filesize
732KB

Download
memory/1508-21-0x0000000002C40000-0x0000000002CF7000-memory.dmp

Filesize
732KB

Download
memory/1508-19-0x0000000002C40000-0x0000000002CF7000-memory.dmp

Filesize
732KB

Download
memory/1508-22-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download