b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782

General

Target

b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe
Size

349KB
MD5

c4cb5c39de0044aa65fb2b3ea8263431
SHA1

0588d5b102526548095bf27645fc263161bce6e0
SHA256

b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782
SHA512

c84f27e86b82b2a19951ae58add524665131e5b93bff1402a7c477bbf314a2c2b3b63256d5b41cb54d15e318ce3f9b82a86f3a2b9543b7b9a8ed1a9db0cf0785
SSDEEP

6144:EVTQbSiexKAK4y6UvcZSeNH49qQQOH+ym4LLIoTqHSMaxzL:bSiOK4yjNQOGzoTCSMG

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
3048	svchost.exe

Loads dropped DLL 5 IoCs

pid	Process
2096	b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe
2096	b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe
2176	WerFault.exe
2176	WerFault.exe
2176	WerFault.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\33a5fcac = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\33a5fcac = "C:\\Windows\\apppatch\\svchost.exe"	b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\apppatch\svchost.exe	b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe
File created	C:\Windows\apppatch\svchost.exe	b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2176	3048	WerFault.exe	31

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	b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3048	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2096	b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 3048	2096	b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe	31
PID 2096 wrote to memory of 3048	2096	b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe	31
PID 2096 wrote to memory of 3048	2096	b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe	31
PID 2096 wrote to memory of 3048	2096	b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe	31
PID 3048 wrote to memory of 2176	3048	svchost.exe	32
PID 3048 wrote to memory of 2176	3048	svchost.exe	32
PID 3048 wrote to memory of 2176	3048	svchost.exe	32
PID 3048 wrote to memory of 2176	3048	svchost.exe	32

C:\Users\Admin\AppData\Local\Temp\b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe
"C:\Users\Admin\AppData\Local\Temp\b595e9f4106b2f7ef8c9af5e5110659e236d3d81266283f62dc25c3eb7bc6782.exe"
1⤵
- Loads dropped DLL
- Modifies WinLogon
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2096
- 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
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3048 -s 484
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Winlogon Helper DLL

2

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Winlogon Helper DLL

2

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\AppPatch\svchost.exe

Filesize
349KB

MD5
c8cacb4074ef1a8c7bdae831d6786476

SHA1
b5c33ab974099b081e548ce5ac25cbc67ce80d5a

SHA256
45f05e57117d8d2f9f08cdab517b88d471e8657c2f183d309843907509453ad4

SHA512
c74ea879a43574a9fc3eafa6ea825e9b00d401f19d1531eb43b03df31b5f2beb2860349ec2790b942ddc97bcf27f4be727be9683665b6dd2778af8e96efe40b6

Download Submit
memory/2096-13-0x0000000000DE0000-0x0000000000E49000-memory.dmp

Filesize
420KB

Download
memory/3048-20-0x0000000000390000-0x00000000003DA000-memory.dmp

Filesize
296KB

Download
memory/3048-22-0x0000000000390000-0x00000000003DA000-memory.dmp

Filesize
296KB

Download
memory/3048-14-0x0000000000390000-0x00000000003DA000-memory.dmp

Filesize
296KB

Download
memory/3048-18-0x0000000000390000-0x00000000003DA000-memory.dmp

Filesize
296KB

Download
memory/3048-16-0x0000000000390000-0x00000000003DA000-memory.dmp

Filesize
296KB

Download
memory/3048-25-0x0000000000450000-0x00000000004A8000-memory.dmp

Filesize
352KB

Download
memory/3048-26-0x0000000000450000-0x00000000004A8000-memory.dmp

Filesize
352KB

Download
memory/3048-28-0x0000000000450000-0x00000000004A8000-memory.dmp

Filesize
352KB

Download
memory/3048-35-0x0000000000450000-0x00000000004A8000-memory.dmp

Filesize
352KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads