3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16

Analysis

max time kernel
35s
max time network
36s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20-09-2024 19:32

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General

Target

3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16.exe
Size

350KB
MD5

fb0cc0909058659349180cfd92fe1323
SHA1

d8954e8c280db8466f1ffdf1977c389429258f0d
SHA256

3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16
SHA512

c319b557ee1fefdc9726e920ada272062e761fe885f69386f551155fbe96535f64710dc3fdcaead5cf7edbf0461c3cfa7e4531961aafbf975ab514d8484d9ae3
SSDEEP

6144:gVTQySiuxLxeHs/4UvcZSeNH4ikRo6S5W3v71TLnOxV8SyuiNu:2SiieHs/KeoHkzxOxqSyj

Score

10^/10

discovery 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
2332	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\787d7980 = "C:\\Windows\\apppatch\\svchost.exe"	3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\787d7980 = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2060	2332	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2332	svchost.exe
2332	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3440	3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3440 wrote to memory of 2332	3440	3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16.exe	82
PID 3440 wrote to memory of 2332	3440	3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16.exe	82
PID 3440 wrote to memory of 2332	3440	3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16.exe	82

C:\Users\Admin\AppData\Local\Temp\3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16.exe
"C:\Users\Admin\AppData\Local\Temp\3133774f81b2ebd58279cad69210295a9ad12e757d078dd2734e9c241f9e7a16.exe"
1⤵
- Modifies WinLogon
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Windows\apppatch\svchost.exe
  "C:\Windows\apppatch\svchost.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Modifies WinLogon
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2332
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2332 -s 804
    3⤵
    - Program crash
    PID:2060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2332 -ip 2332
1⤵
PID:1068

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\apppatch\svchost.exe

Filesize
350KB

MD5
ce559c085fee20a8d782d035c97ea0f7

SHA1
d7b2423a973b181baf5b4ad758864118c0e600c4

SHA256
895cc9fb16e893d2fa257f4d6d7b64a9d747e3618b083feb71d7264fcc55aca0

SHA512
da0941c359719f7041db4bf04040acd811c9dcb8c1c26a2f30ea565c9e84cb8415f9c12dc2167ee2b37faa6d4c5b6cdb51a9f7ad4063f051ddb667bf72bdf93e

Download Submit
memory/2332-10-0x0000000002FA0000-0x0000000002FEA000-memory.dmp

Filesize
296KB

Download
memory/2332-13-0x0000000003340000-0x0000000003398000-memory.dmp

Filesize
352KB

Download
memory/2332-17-0x0000000003340000-0x0000000003398000-memory.dmp

Filesize
352KB

Download
memory/2332-14-0x0000000003340000-0x0000000003398000-memory.dmp

Filesize
352KB

Download
memory/2332-24-0x0000000003340000-0x0000000003398000-memory.dmp

Filesize
352KB

Download
memory/3440-9-0x0000000000E60000-0x0000000000EC9000-memory.dmp

Filesize
420KB

Download