4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e

General

Target

4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe
Size

65KB
MD5

70c35d668d0506e94a29f3cd95c3687a
SHA1

2d460c83d5d6fe3835ca595ce35b420b3b90443d
SHA256

4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e
SHA512

609837bf04451f65a072ecede018f99ef71fb696e6323b1542d6dc5fba28aeffbe13ce2864dc8bdd3fe935b4405fe73e3c8ede64e41d47dcbef3b28466812a64
SSDEEP

1536:ECq3yRuqrI01eArdW/O7JnI2e13XiLij40MkTUVqa/OuWppppppppppppppppppq:7WNqkOJWmo1HpM0MkTUmup

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

explorer.exesvchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	svchost.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Processes:

explorer.exesvchost.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Modifies Installed Components in the registry 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exeexplorer.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe

Executes dropped EXE 4 IoCs

Processes:

explorer.exespoolsv.exesvchost.exespoolsv.exe

pid process

2332 explorer.exe
2620 spoolsv.exe
2988 svchost.exe
2464 spoolsv.exe

pid	process
2332	explorer.exe
2620	spoolsv.exe
2988	svchost.exe
2464	spoolsv.exe

Loads dropped DLL 8 IoCs

Processes:

4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exeexplorer.exespoolsv.exesvchost.exe

pid	process
2128	4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe
2128	4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe
2332	explorer.exe
2332	explorer.exe
2620	spoolsv.exe
2620	spoolsv.exe
2988	svchost.exe
2988	svchost.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exeexplorer.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	explorer.exe

Drops file in Windows directory 6 IoCs

Processes:

spoolsv.exeexplorer.exesvchost.exe4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe

description	ioc	process
File opened for modification	\??\c:\windows\system\svchost.exe	spoolsv.exe
File opened for modification	\??\c:\windows\system\explorer.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe
File opened for modification	\??\c:\windows\system\explorer.exe	4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe
File opened for modification	\??\c:\windows\system\spoolsv.exe	explorer.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exeexplorer.exesvchost.exe

pid	process
2128	4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe
2332	explorer.exe
2332	explorer.exe
2332	explorer.exe
2988	svchost.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe
2332	explorer.exe
2988	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

Processes:

explorer.exesvchost.exe

pid process

2332 explorer.exe
2988 svchost.exe

pid	process
2332	explorer.exe
2988	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exeexplorer.exespoolsv.exesvchost.exespoolsv.exe

pid	process
2128	4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe
2128	4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe
2332	explorer.exe
2332	explorer.exe
2620	spoolsv.exe
2620	spoolsv.exe
2988	svchost.exe
2988	svchost.exe
2464	spoolsv.exe
2464	spoolsv.exe
2332	explorer.exe
2332	explorer.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exeexplorer.exespoolsv.exesvchost.exe

description	pid	process	target process
PID 2128 wrote to memory of 2332	2128	4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe	explorer.exe
PID 2128 wrote to memory of 2332	2128	4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe	explorer.exe
PID 2128 wrote to memory of 2332	2128	4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe	explorer.exe
PID 2128 wrote to memory of 2332	2128	4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe	explorer.exe
PID 2332 wrote to memory of 2620	2332	explorer.exe	spoolsv.exe
PID 2332 wrote to memory of 2620	2332	explorer.exe	spoolsv.exe
PID 2332 wrote to memory of 2620	2332	explorer.exe	spoolsv.exe
PID 2332 wrote to memory of 2620	2332	explorer.exe	spoolsv.exe
PID 2620 wrote to memory of 2988	2620	spoolsv.exe	svchost.exe
PID 2620 wrote to memory of 2988	2620	spoolsv.exe	svchost.exe
PID 2620 wrote to memory of 2988	2620	spoolsv.exe	svchost.exe
PID 2620 wrote to memory of 2988	2620	spoolsv.exe	svchost.exe
PID 2988 wrote to memory of 2464	2988	svchost.exe	spoolsv.exe
PID 2988 wrote to memory of 2464	2988	svchost.exe	spoolsv.exe
PID 2988 wrote to memory of 2464	2988	svchost.exe	spoolsv.exe
PID 2988 wrote to memory of 2464	2988	svchost.exe	spoolsv.exe
PID 2988 wrote to memory of 2252	2988	svchost.exe	at.exe
PID 2988 wrote to memory of 2252	2988	svchost.exe	at.exe
PID 2988 wrote to memory of 2252	2988	svchost.exe	at.exe
PID 2988 wrote to memory of 2252	2988	svchost.exe	at.exe
PID 2988 wrote to memory of 804	2988	svchost.exe	at.exe
PID 2988 wrote to memory of 804	2988	svchost.exe	at.exe
PID 2988 wrote to memory of 804	2988	svchost.exe	at.exe
PID 2988 wrote to memory of 804	2988	svchost.exe	at.exe
PID 2988 wrote to memory of 640	2988	svchost.exe	at.exe
PID 2988 wrote to memory of 640	2988	svchost.exe	at.exe
PID 2988 wrote to memory of 640	2988	svchost.exe	at.exe
PID 2988 wrote to memory of 640	2988	svchost.exe	at.exe

C:\Users\Admin\AppData\Local\Temp\4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe
"C:\Users\Admin\AppData\Local\Temp\4230c744b44b026252ec0961b884a77e164ceae1eec514e0b724c223afbdd90e.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2128

\??\c:\windows\system\explorer.exe
c:\windows\system\explorer.exe
2⤵
- Modifies WinLogon for persistence
- Modifies visiblity of hidden/system files in Explorer
- Modifies Installed Components in the registry
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2332

\??\c:\windows\system\spoolsv.exe
c:\windows\system\spoolsv.exe SE
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2620

\??\c:\windows\system\svchost.exe
c:\windows\system\svchost.exe
4⤵
- Modifies WinLogon for persistence
- Modifies visiblity of hidden/system files in Explorer
- Modifies Installed Components in the registry
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2988

\??\c:\windows\system\spoolsv.exe
c:\windows\system\spoolsv.exe PR
5⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2464

C:\Windows\SysWOW64\at.exe
at 22:10 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
5⤵
PID:2252

C:\Windows\SysWOW64\at.exe
at 22:11 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
5⤵
PID:804

C:\Windows\SysWOW64\at.exe
at 22:12 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
5⤵
PID:640

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

4

T1112

Hide Artifacts

1

T1564

Hidden Files and Directories

1

T1564.001

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\mrsys.exe
Filesize
65KB

MD5
7781fc28e9cfc7f5f8c7d8fbc251a2ab

SHA1
4b8aad8b58fd52145af92ba5bcfb8a0a779021ce

SHA256
78042b9696a997d75b4bab05d0f92ebf11c2a5f42dbd66df6f98784a27a3e48c

SHA512
da2179218a6d5785b133a521e782de3e867a8873fbb58d03a5c43b35399708023d014e711cbea6d17263610539f8379560ad147e9cd6debd4844c6183de25487

Download Submit
\Windows\system\explorer.exe
Filesize
65KB

MD5
f09373231e6c51abe0b5a30ba7f4a0bb

SHA1
58a7e8fec040f5864efa4dfb5a41495b809d061a

SHA256
cb84d83ef4c2afceb40e80dd74fd13871d7bfb31468bf38fc7af02db2c9f4c3f

SHA512
48d79cb81e868a984c472a4874d658ebd15a9ca7596b00653d39a7790d4c4df831a65727059609d849ba0c5d9f7462984983baf1927f86b133b01b15bfb46829

Download Submit
\Windows\system\spoolsv.exe
Filesize
65KB

MD5
5c0ed9fc4f492b8d1a5c882490a61761

SHA1
bfa69efcfe4bec7df58a2081db848edba7c22bfd

SHA256
fddf98e43ec69fc1c3ff32bf6c4d039f035fab3b86216f590db0681f1521177a

SHA512
1611905329d3cf617033b461cd5e97978887e4487074510b627d85b16594fc9611d3b045c69994e113a554a5751ae67934bfcafcd1ac3c7518d6107fc73418f5

Download Submit
\Windows\system\svchost.exe
Filesize
65KB

MD5
c09f87c68ecfcfa0315d144e9c3c3b1d

SHA1
c2a5884ba3f84e52240ebf5d0960dce90a09ea0f

SHA256
27956563961af274ed5a0c87071fab07bc9a58e1aaeab512daa619f313921755

SHA512
813db8860f634f9300310ff06d85d6511d559a066e4d78a8578ec33682f564a5bb8d99f299ad3cea922350232cbd0de94a0db726536c013184a16fe8aa935461

Download Submit
memory/2128-16-0x00000000023D0000-0x0000000002401000-memory.dmp

Filesize
196KB

Download
memory/2128-2-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2128-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2128-1-0x0000000000020000-0x0000000000024000-memory.dmp

Filesize
16KB

Download
memory/2128-4-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/2128-78-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2128-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2128-79-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/2128-62-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/2332-18-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2332-91-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2332-81-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2332-19-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2332-25-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2332-30-0x00000000032D0000-0x0000000003301000-memory.dmp

Filesize
196KB

Download
memory/2332-66-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2464-67-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2464-73-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2620-36-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2620-40-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2620-77-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2620-52-0x0000000001E90000-0x0000000001EC1000-memory.dmp

Filesize
196KB

Download
memory/2988-64-0x00000000024F0000-0x0000000002521000-memory.dmp

Filesize
196KB

Download
memory/2988-60-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2988-54-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2988-82-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2988-53-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads