6052c88fc0e8c7e0f576331f0fd54fe022bf7ddf623bcfd08f6724f68b5b568e

General

Target

855c2109b17c86741a2efbb08a3ffa30N.exe
Size

349KB
MD5

855c2109b17c86741a2efbb08a3ffa30
SHA1

6519929da8262243725819873356ed3f22434f5b
SHA256

6052c88fc0e8c7e0f576331f0fd54fe022bf7ddf623bcfd08f6724f68b5b568e
SHA512

45c6467f92052c0227b7e0f81987624212f0acf59185f4282e8f6a1b6d36a7924fef96dab0d869f1f9e440a9348bf528e9a53a7752972100d34460856bf0e774
SSDEEP

6144:zVTQqSiexKAK4y6UvcZSeNH49qQQOH+ym4LLIoTqHSMaxzL:lSiOK4yjNQOGzoTCSMG

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
2796	svchost.exe

Loads dropped DLL 5 IoCs

pid	Process
1628	855c2109b17c86741a2efbb08a3ffa30N.exe
1628	855c2109b17c86741a2efbb08a3ffa30N.exe
2552	WerFault.exe
2552	WerFault.exe
2552	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\4a48e10e = "C:\\Windows\\apppatch\\svchost.exe"	855c2109b17c86741a2efbb08a3ffa30N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\4a48e10e = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	855c2109b17c86741a2efbb08a3ffa30N.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	855c2109b17c86741a2efbb08a3ffa30N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2552	2796	WerFault.exe	30

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	855c2109b17c86741a2efbb08a3ffa30N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2796	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1628	855c2109b17c86741a2efbb08a3ffa30N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 2796	1628	855c2109b17c86741a2efbb08a3ffa30N.exe	30
PID 1628 wrote to memory of 2796	1628	855c2109b17c86741a2efbb08a3ffa30N.exe	30
PID 1628 wrote to memory of 2796	1628	855c2109b17c86741a2efbb08a3ffa30N.exe	30
PID 1628 wrote to memory of 2796	1628	855c2109b17c86741a2efbb08a3ffa30N.exe	30
PID 2796 wrote to memory of 2552	2796	svchost.exe	31
PID 2796 wrote to memory of 2552	2796	svchost.exe	31
PID 2796 wrote to memory of 2552	2796	svchost.exe	31
PID 2796 wrote to memory of 2552	2796	svchost.exe	31

C:\Users\Admin\AppData\Local\Temp\855c2109b17c86741a2efbb08a3ffa30N.exe
"C:\Users\Admin\AppData\Local\Temp\855c2109b17c86741a2efbb08a3ffa30N.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:1628
- 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:2796
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 520
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2552

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

C:\Windows\AppPatch\svchost.exe

Filesize
349KB

MD5
e8a6782f84da7b07803921bc8aaba373

SHA1
7e840e99e932bee112751cc3409a4611760c13cb

SHA256
c6a2b430413b448b6d3c502ea1ae87889bfe9d8505b16342849995566da7387e

SHA512
2b92a641b39efb31173bf55c775e3448cb3f15e1b8e9d995cda029097e8c32b7b5f5e5a4fc2207b7591ce4efd35f2ece980bc2607b2bb84c7fd469a5e7f86564

Download Submit
memory/1628-12-0x0000000000040000-0x00000000000A9000-memory.dmp

Filesize
420KB

Download
memory/2796-18-0x0000000000380000-0x00000000003CA000-memory.dmp

Filesize
296KB

Download
memory/2796-22-0x0000000000380000-0x00000000003CA000-memory.dmp

Filesize
296KB

Download
memory/2796-21-0x0000000000380000-0x00000000003CA000-memory.dmp

Filesize
296KB

Download
memory/2796-16-0x0000000000380000-0x00000000003CA000-memory.dmp

Filesize
296KB

Download
memory/2796-14-0x0000000000380000-0x00000000003CA000-memory.dmp

Filesize
296KB

Download
memory/2796-25-0x0000000000480000-0x00000000004D8000-memory.dmp

Filesize
352KB

Download
memory/2796-28-0x0000000000480000-0x00000000004D8000-memory.dmp

Filesize
352KB

Download
memory/2796-26-0x0000000000480000-0x00000000004D8000-memory.dmp

Filesize
352KB

Download
memory/2796-35-0x0000000000480000-0x00000000004D8000-memory.dmp

Filesize
352KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads