25510d20b983dbfc0443684dd1674192cb32b9ab06a2ab9e67e2db6f99ead154

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2024, 14:46

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General

Target

b4f52848c48aea663e5344e33a1b087a.exe
Size

609KB
MD5

b4f52848c48aea663e5344e33a1b087a
SHA1

952e076be5498fcbb41123070c5a297c329e2395
SHA256

25510d20b983dbfc0443684dd1674192cb32b9ab06a2ab9e67e2db6f99ead154
SHA512

5e78c19e2084ae3c9f90be86e4458ded13cea66f2185bc26637a2b00f8ff57d5d1da09ed99f47b981e59815ef63ee7d10ffb506157b178e95fa56356e8dc997e
SSDEEP

12288:BLcKp2Adls/rnjs7RLKslAmJSv4KMwUU9d8Kb6a:CK2GsD4RLTlzJSv4sGKGa

Score

10^/10

persistence upx

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\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\system32\\sdra64.exe,"	b4f52848c48aea663e5344e33a1b087a.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/5008-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/5008-6-0x0000000000400000-0x0000000000437000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\sdra64.exe	b4f52848c48aea663e5344e33a1b087a.exe
File created	C:\Windows\SysWOW64\sdra64.exe	b4f52848c48aea663e5344e33a1b087a.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5008 set thread context of 1884	5008	b4f52848c48aea663e5344e33a1b087a.exe	88

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1884	b4f52848c48aea663e5344e33a1b087a.exe
1884	b4f52848c48aea663e5344e33a1b087a.exe
1884	b4f52848c48aea663e5344e33a1b087a.exe
1884	b4f52848c48aea663e5344e33a1b087a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1884	b4f52848c48aea663e5344e33a1b087a.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5008	b4f52848c48aea663e5344e33a1b087a.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 1884	5008	b4f52848c48aea663e5344e33a1b087a.exe	88
PID 5008 wrote to memory of 1884	5008	b4f52848c48aea663e5344e33a1b087a.exe	88
PID 5008 wrote to memory of 1884	5008	b4f52848c48aea663e5344e33a1b087a.exe	88
PID 5008 wrote to memory of 1884	5008	b4f52848c48aea663e5344e33a1b087a.exe	88
PID 5008 wrote to memory of 1884	5008	b4f52848c48aea663e5344e33a1b087a.exe	88
PID 5008 wrote to memory of 1884	5008	b4f52848c48aea663e5344e33a1b087a.exe	88
PID 5008 wrote to memory of 1884	5008	b4f52848c48aea663e5344e33a1b087a.exe	88
PID 5008 wrote to memory of 1884	5008	b4f52848c48aea663e5344e33a1b087a.exe	88
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5
PID 1884 wrote to memory of 632	1884	b4f52848c48aea663e5344e33a1b087a.exe	5

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:632

C:\Users\Admin\AppData\Local\Temp\b4f52848c48aea663e5344e33a1b087a.exe
"C:\Users\Admin\AppData\Local\Temp\b4f52848c48aea663e5344e33a1b087a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Users\Admin\AppData\Local\Temp\b4f52848c48aea663e5344e33a1b087a.exe
  C:\Users\Admin\AppData\Local\Temp\b4f52848c48aea663e5344e33a1b087a.exe
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1884

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

memory/632-168-0x000000002F800000-0x000000002F817000-memory.dmp

Filesize
92KB

Download
memory/632-178-0x000000002F840000-0x000000002F857000-memory.dmp

Filesize
92KB

Download
memory/632-313-0x000000002FBA0000-0x000000002FBB7000-memory.dmp

Filesize
92KB

Download
memory/632-308-0x000000002FB80000-0x000000002FB97000-memory.dmp

Filesize
92KB

Download
memory/632-28-0x000000002F480000-0x000000002F497000-memory.dmp

Filesize
92KB

Download
memory/632-33-0x000000002F4A0000-0x000000002F4B7000-memory.dmp

Filesize
92KB

Download
memory/632-38-0x000000002F4C0000-0x000000002F4D7000-memory.dmp

Filesize
92KB

Download
memory/632-43-0x000000002F4E0000-0x000000002F4F7000-memory.dmp

Filesize
92KB

Download
memory/632-48-0x000000002F500000-0x000000002F517000-memory.dmp

Filesize
92KB

Download
memory/632-53-0x000000002F520000-0x000000002F537000-memory.dmp

Filesize
92KB

Download
memory/632-58-0x000000002F540000-0x000000002F557000-memory.dmp

Filesize
92KB

Download
memory/632-63-0x000000002F560000-0x000000002F577000-memory.dmp

Filesize
92KB

Download
memory/632-68-0x000000002F580000-0x000000002F597000-memory.dmp

Filesize
92KB

Download
memory/632-73-0x000000002F5A0000-0x000000002F5B7000-memory.dmp

Filesize
92KB

Download
memory/632-78-0x000000002F5C0000-0x000000002F5D7000-memory.dmp

Filesize
92KB

Download
memory/632-83-0x000000002F5E0000-0x000000002F5F7000-memory.dmp

Filesize
92KB

Download
memory/632-88-0x000000002F600000-0x000000002F617000-memory.dmp

Filesize
92KB

Download
memory/632-173-0x000000002F820000-0x000000002F837000-memory.dmp

Filesize
92KB

Download
memory/632-98-0x000000002F640000-0x000000002F657000-memory.dmp

Filesize
92KB

Download
memory/632-103-0x000000002F660000-0x000000002F677000-memory.dmp

Filesize
92KB

Download
memory/632-108-0x000000002F680000-0x000000002F697000-memory.dmp

Filesize
92KB

Download
memory/632-113-0x000000002F6A0000-0x000000002F6B7000-memory.dmp

Filesize
92KB

Download
memory/632-118-0x000000002F6C0000-0x000000002F6D7000-memory.dmp

Filesize
92KB

Download
memory/632-123-0x000000002F6E0000-0x000000002F6F7000-memory.dmp

Filesize
92KB

Download
memory/632-128-0x000000002F700000-0x000000002F717000-memory.dmp

Filesize
92KB

Download
memory/632-133-0x000000002F720000-0x000000002F737000-memory.dmp

Filesize
92KB

Download
memory/632-138-0x000000002F740000-0x000000002F757000-memory.dmp

Filesize
92KB

Download
memory/632-143-0x000000002F760000-0x000000002F777000-memory.dmp

Filesize
92KB

Download
memory/632-148-0x000000002F780000-0x000000002F797000-memory.dmp

Filesize
92KB

Download
memory/632-153-0x000000002F7A0000-0x000000002F7B7000-memory.dmp

Filesize
92KB

Download
memory/632-158-0x000000002F7C0000-0x000000002F7D7000-memory.dmp

Filesize
92KB

Download
memory/632-163-0x000000002F7E0000-0x000000002F7F7000-memory.dmp

Filesize
92KB

Download
memory/632-23-0x000000002F460000-0x000000002F477000-memory.dmp

Filesize
92KB

Download
memory/632-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/632-93-0x000000002F620000-0x000000002F637000-memory.dmp

Filesize
92KB

Download
memory/632-183-0x000000002F860000-0x000000002F877000-memory.dmp

Filesize
92KB

Download
memory/632-188-0x000000002F880000-0x000000002F897000-memory.dmp

Filesize
92KB

Download
memory/632-193-0x000000002F8A0000-0x000000002F8B7000-memory.dmp

Filesize
92KB

Download
memory/632-198-0x000000002F8C0000-0x000000002F8D7000-memory.dmp

Filesize
92KB

Download
memory/632-203-0x000000002F8E0000-0x000000002F8F7000-memory.dmp

Filesize
92KB

Download
memory/632-208-0x000000002F900000-0x000000002F917000-memory.dmp

Filesize
92KB

Download
memory/632-213-0x000000002F920000-0x000000002F937000-memory.dmp

Filesize
92KB

Download
memory/632-218-0x000000002F940000-0x000000002F957000-memory.dmp

Filesize
92KB

Download
memory/632-223-0x000000002F960000-0x000000002F977000-memory.dmp

Filesize
92KB

Download
memory/632-228-0x000000002F980000-0x000000002F997000-memory.dmp

Filesize
92KB

Download
memory/632-233-0x000000002F9A0000-0x000000002F9B7000-memory.dmp

Filesize
92KB

Download
memory/632-238-0x000000002F9C0000-0x000000002F9D7000-memory.dmp

Filesize
92KB

Download
memory/632-243-0x000000002F9E0000-0x000000002F9F7000-memory.dmp

Filesize
92KB

Download
memory/632-248-0x000000002FA00000-0x000000002FA17000-memory.dmp

Filesize
92KB

Download
memory/632-253-0x000000002FA20000-0x000000002FA37000-memory.dmp

Filesize
92KB

Download
memory/632-258-0x000000002FA40000-0x000000002FA57000-memory.dmp

Filesize
92KB

Download
memory/632-263-0x000000002FA60000-0x000000002FA77000-memory.dmp

Filesize
92KB

Download
memory/632-268-0x000000002FA80000-0x000000002FA97000-memory.dmp

Filesize
92KB

Download
memory/632-273-0x000000002FAA0000-0x000000002FAB7000-memory.dmp

Filesize
92KB

Download
memory/632-278-0x000000002FAC0000-0x000000002FAD7000-memory.dmp

Filesize
92KB

Download
memory/632-283-0x000000002FAE0000-0x000000002FAF7000-memory.dmp

Filesize
92KB

Download
memory/632-288-0x000000002FB00000-0x000000002FB17000-memory.dmp

Filesize
92KB

Download
memory/632-293-0x000000002FB20000-0x000000002FB37000-memory.dmp

Filesize
92KB

Download
memory/632-298-0x000000002FB40000-0x000000002FB57000-memory.dmp

Filesize
92KB

Download
memory/632-303-0x000000002FB60000-0x000000002FB77000-memory.dmp

Filesize
92KB

Download
memory/1884-5-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1884-3-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1884-8-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/1884-9-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1884-3001-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5008-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/5008-6-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download