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
4200	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\65136aa0 = "C:\\Windows\\apppatch\\svchost.exe"	7c98ca821480f4152d9e9cd6d92b8c40N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\65136aa0 = "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
1304	4200	WerFault.exe	92

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 2 IoCs

pid	Process
4200	svchost.exe
4200	svchost.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3740	7c98ca821480f4152d9e9cd6d92b8c40N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3740 wrote to memory of 4200	3740	7c98ca821480f4152d9e9cd6d92b8c40N.exe	92
PID 3740 wrote to memory of 4200	3740	7c98ca821480f4152d9e9cd6d92b8c40N.exe	92
PID 3740 wrote to memory of 4200	3740	7c98ca821480f4152d9e9cd6d92b8c40N.exe	92

C:\Users\Admin\AppData\Local\Temp\7c98ca821480f4152d9e9cd6d92b8c40N.exe
"C:\Users\Admin\AppData\Local\Temp\7c98ca821480f4152d9e9cd6d92b8c40N.exe"
1⤵
- Modifies WinLogon
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:3740
- 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:4200
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4200 -s 816
    3⤵
    - Program crash
    PID:1304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4200 -ip 4200
1⤵
PID:4336

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4448,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=4412 /prefetch:8
1⤵
PID:4348

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
244KB

MD5
f423b1bdc032198674aabc7fb5d51dab

SHA1
37c62f373d0738460921504f5860426e39952885

SHA256
681f141260795c9c42fbc80ed0919e1ccc81a8c98331ecaf567b140d0fa20f27

SHA512
99af2fa2b9d42d25ba42c362db886da2bf7d02ab228892f7fb4cea0d210589730c4f466682d77f05d9fbc7e9c09d230e70972ca9125a661666baa79d36a1b493

Download Submit
memory/3740-0-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/3740-1-0x0000000002080000-0x00000000020E8000-memory.dmp

Filesize
416KB

Download
memory/3740-2-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/3740-12-0x0000000002080000-0x00000000020E8000-memory.dmp

Filesize
416KB

Download
memory/3740-14-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/4200-16-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/4200-15-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/4200-17-0x00000000027A0000-0x00000000027EA000-memory.dmp

Filesize
296KB

Download
memory/4200-18-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/4200-19-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download
memory/4200-23-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download
memory/4200-21-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download
memory/4200-26-0x0000000002B40000-0x0000000002B98000-memory.dmp

Filesize
352KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads