e3d7a884100ddada0b7ae3b9b4865b278ce965cc9d5795518c2731778f492997

Analysis

max time kernel
150s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-11-2024 08:09

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General

Target

Client2.exe
Size

561KB
MD5

aca8507a376976a952a82c43b992da6d
SHA1

7a42870b1f6ff373c1102603d814a1ae03832c6e
SHA256

e3d7a884100ddada0b7ae3b9b4865b278ce965cc9d5795518c2731778f492997
SHA512

f5ed7dca6e51d61c7630649a18db19179afb639da7d0c4cf66954b53641d171ecb587f9b3c61688addbe2ecbd47c06ba74a064b07f1b5785600a353eb67cdf15
SSDEEP

6144:eL/+3efykVMMfe5jIUJWj7vF5PfOwarYtVAM6/Ro6PYwpizdbXPitUF:eLp6kCBxIUJ0rfQMf8/G6ABB0UF

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\\WindowsDefender"	Client2.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Windows\\Windows Defender"	Client2.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\WindowsDefender	Client2.exe
File opened for modification	C:\Windows\WindowsDefender	Client2.exe
File created	C:\Windows\Windows Defender	Client2.exe
File opened for modification	C:\Windows\Windows Defender	Client2.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2832	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe
2844	Client2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2844	Client2.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2604	2844	Client2.exe	32
PID 2844 wrote to memory of 2604	2844	Client2.exe	32
PID 2844 wrote to memory of 2604	2844	Client2.exe	32
PID 2604 wrote to memory of 2832	2604	CMD.exe	34
PID 2604 wrote to memory of 2832	2604	CMD.exe	34
PID 2604 wrote to memory of 2832	2604	CMD.exe	34

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Client2.exe
"C:\Users\Admin\AppData\Local\Temp\Client2.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\system32\CMD.exe
  "CMD" /C SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "System" /tr "C:\Windows\WindowsDefender" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2604
- - C:\Windows\system32\schtasks.exe
    SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "System" /tr "C:\Windows\WindowsDefender"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2832

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:592

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2844-0-0x000007FEF5EE3000-0x000007FEF5EE4000-memory.dmp

Filesize
4KB

Download
memory/2844-1-0x0000000000DC0000-0x0000000000E52000-memory.dmp

Filesize
584KB

Download
memory/2844-58-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

Filesize
9.9MB

Download
memory/2844-72-0x0000000000440000-0x000000000044C000-memory.dmp

Filesize
48KB

Download
memory/2844-125-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

Filesize
9.9MB

Download