e50598436ced893edd06e45175503a768af450b34559db324367dcff12655bf8

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04/02/2024, 21:00

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General

Target

90242a96e37b75f170b8db3e9fb3fec4.exe
Size

99KB
MD5

90242a96e37b75f170b8db3e9fb3fec4
SHA1

93b9029ec2acb8c06ff9d67bbdcbaa6b097212db
SHA256

e50598436ced893edd06e45175503a768af450b34559db324367dcff12655bf8
SHA512

a75cb6ea5b7e5008ea14d4f61568633f1e663c4d2eae5c0ec1a6e2e30195bee12022dee0a0639572e9d55c65d4ac37463ce8e38442f91623adfd9e2dfaf6fe71
SSDEEP

1536:xEFixcgoD1O7hMC+IAl03JyXtyiViiYHY0aYAlPci/pvGX14H75okX:yMxV17h1+/lmetyiUiY4WAl0iR9/

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\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\winsrv.exe"	90242a96e37b75f170b8db3e9fb3fec4.exe

Deletes itself 1 IoCs

pid	Process
2656	cmd.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\windows.hlp	90242a96e37b75f170b8db3e9fb3fec4.exe
File opened for modification	C:\Windows\SysWOW64\windows.hlp	90242a96e37b75f170b8db3e9fb3fec4.exe
File created	C:\Windows\SysWOW64\winsrv.exe	90242a96e37b75f170b8db3e9fb3fec4.exe
File opened for modification	C:\Windows\SysWOW64\winsrv.exe	90242a96e37b75f170b8db3e9fb3fec4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1700	90242a96e37b75f170b8db3e9fb3fec4.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 2656	1700	90242a96e37b75f170b8db3e9fb3fec4.exe	28
PID 1700 wrote to memory of 2656	1700	90242a96e37b75f170b8db3e9fb3fec4.exe	28
PID 1700 wrote to memory of 2656	1700	90242a96e37b75f170b8db3e9fb3fec4.exe	28
PID 1700 wrote to memory of 2656	1700	90242a96e37b75f170b8db3e9fb3fec4.exe	28

C:\Users\Admin\AppData\Local\Temp\90242a96e37b75f170b8db3e9fb3fec4.exe
"C:\Users\Admin\AppData\Local\Temp\90242a96e37b75f170b8db3e9fb3fec4.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\90242A~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2656

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

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Downloads

memory/1700-0-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1700-1-0x0000000000020000-0x0000000000021000-memory.dmp

Filesize
4KB

Download
memory/1700-6-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads