eb6d4170d83f3e3a505263511b775c5857a6f56d95432ac0195ca13c5885877f

General

Target

7c98ca821480f4152d9e9cd6d92b8c40N.exe
Size

244KB
MD5

7c98ca821480f4152d9e9cd6d92b8c40
SHA1

fceb685c57d861376f0a4b5a0acb758a796f1f31
SHA256

eb6d4170d83f3e3a505263511b775c5857a6f56d95432ac0195ca13c5885877f
SHA512

dbf9ed6925922c8958163db85d22dad0c1be4b0b4fd873c5090c0b84f7454b2ded4c88d8820d393549bdf2ce9370fed573b0a4a4dfbea361158fd0493832b9d2
SSDEEP

6144:REXlSylvFuWaS54hIAv/QhuA7HY8pPZ0FP6BzxM5EmX:CAylvv5YRwh9HYd61xhmX

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
1692	svchost.exe

Loads dropped DLL 7 IoCs

pid	Process
1708	7c98ca821480f4152d9e9cd6d92b8c40N.exe
1708	7c98ca821480f4152d9e9cd6d92b8c40N.exe
2100	WerFault.exe
2100	WerFault.exe
2100	WerFault.exe
2100	WerFault.exe
2100	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\f9645ac3 = "C:\\Windows\\apppatch\\svchost.exe"	7c98ca821480f4152d9e9cd6d92b8c40N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\f9645ac3 = "C:\\Windows\\apppatch\\svchost.exe"	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\apppatch\svchost.exe	7c98ca821480f4152d9e9cd6d92b8c40N.exe
File opened for modification	C:\Windows\apppatch\svchost.exe	7c98ca821480f4152d9e9cd6d92b8c40N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2100	1692	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	7c98ca821480f4152d9e9cd6d92b8c40N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1692	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1708	7c98ca821480f4152d9e9cd6d92b8c40N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 1692	1708	7c98ca821480f4152d9e9cd6d92b8c40N.exe	30
PID 1708 wrote to memory of 1692	1708	7c98ca821480f4152d9e9cd6d92b8c40N.exe	30
PID 1708 wrote to memory of 1692	1708	7c98ca821480f4152d9e9cd6d92b8c40N.exe	30
PID 1708 wrote to memory of 1692	1708	7c98ca821480f4152d9e9cd6d92b8c40N.exe	30
PID 1692 wrote to memory of 2100	1692	svchost.exe	31
PID 1692 wrote to memory of 2100	1692	svchost.exe	31
PID 1692 wrote to memory of 2100	1692	svchost.exe	31
PID 1692 wrote to memory of 2100	1692	svchost.exe	31

C:\Users\Admin\AppData\Local\Temp\7c98ca821480f4152d9e9cd6d92b8c40N.exe
"C:\Users\Admin\AppData\Local\Temp\7c98ca821480f4152d9e9cd6d92b8c40N.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:1708
- 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:1692
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1692 -s 436
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2100

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
244KB

MD5
4f6e790537b912873fe56e38100b8646

SHA1
4570c2c4f5664fe4e52a8dd8a83282d50244eb66

SHA256
118743503894bc46878e312c825fcdf7a639061fc2fd80a7e594cbc70cdf1fd4

SHA512
62edb233ec5bec257c7f77e1aed24b32a6f9222889202e62a3663aeaf34498c1bc0e4d5817d63627069eae4c32d74e395c387c9b76a0f0b3ee39dc71e188eb74

Download Submit
memory/1692-26-0x0000000000290000-0x00000000002DA000-memory.dmp

Filesize
296KB

Download
memory/1692-22-0x0000000000290000-0x00000000002DA000-memory.dmp

Filesize
296KB

Download
memory/1692-36-0x0000000002210000-0x0000000002268000-memory.dmp

Filesize
352KB

Download
memory/1692-34-0x0000000002210000-0x0000000002268000-memory.dmp

Filesize
352KB

Download
memory/1692-18-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1692-32-0x0000000002210000-0x0000000002268000-memory.dmp

Filesize
352KB

Download
memory/1692-20-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1692-21-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1692-31-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1692-28-0x0000000000290000-0x00000000002DA000-memory.dmp

Filesize
296KB

Download
memory/1692-30-0x0000000000290000-0x00000000002DA000-memory.dmp

Filesize
296KB

Download
memory/1692-24-0x0000000000290000-0x00000000002DA000-memory.dmp

Filesize
296KB

Download
memory/1708-0-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1708-2-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1708-17-0x00000000004E0000-0x0000000000548000-memory.dmp

Filesize
416KB

Download
memory/1708-19-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1708-1-0x00000000004E0000-0x0000000000548000-memory.dmp

Filesize
416KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads