d2febd149b9558dacf694e6c1a8e3d06bf05bd4d848a7a13083a429cd2b78543

Analysis

max time kernel
150s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
08-05-2024 05:31

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General

Target

e48282011b4d855bcd15b6a938726270_NEIKI.exe
Size

66KB
MD5

e48282011b4d855bcd15b6a938726270
SHA1

1772c8bfee0be0a4b8b86df0a215ff0d429ec2af
SHA256

d2febd149b9558dacf694e6c1a8e3d06bf05bd4d848a7a13083a429cd2b78543
SHA512

5ba1331939911ea157667cf5b5a5815eb6d6a1ee175fc50c095785c0b6f9008a2929488554c865406f496e2bd11330bb38969cc7ff70c33d312ab268d3f91436
SSDEEP

1536:EHfetdklPp+07gDSrB8Xru2zGeJxgawTzpXzrDJrXik:IeklMMYJhqezw/pXzH9ik

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

Detects BazaLoader malware 1 IoCs

BazaLoader is a trojan that transmits logs to the Command and Control (C2) server, encoding them in BASE64 format through GET requests.

trojan

resource	yara_rule
behavioral2/memory/1648-38-0x0000000075600000-0x000000007575D000-memory.dmp	BazaLoader

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

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

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000\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

description	ioc	Process
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
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

Executes dropped EXE 4 IoCs

pid	Process
5020	explorer.exe
3720	spoolsv.exe
1648	svchost.exe
4348	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
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
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

Drops file in Windows directory 6 IoCs

description	ioc	Process
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	e48282011b4d855bcd15b6a938726270_NEIKI.exe
File opened for modification	\??\c:\windows\system\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	spoolsv.exe
File opened for modification	\??\c:\windows\system\explorer.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

pid	Process
1596	e48282011b4d855bcd15b6a938726270_NEIKI.exe
1596	e48282011b4d855bcd15b6a938726270_NEIKI.exe
5020	explorer.exe
5020	explorer.exe
5020	explorer.exe
5020	explorer.exe
5020	explorer.exe
5020	explorer.exe
1648	svchost.exe
1648	svchost.exe
1648	svchost.exe
1648	svchost.exe
5020	explorer.exe
5020	explorer.exe
1648	svchost.exe
1648	svchost.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
1648	svchost.exe
5020	explorer.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
1648	svchost.exe
5020	explorer.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
5020	explorer.exe
1648	svchost.exe
1648	svchost.exe
5020	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1648	svchost.exe
5020	explorer.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1596	e48282011b4d855bcd15b6a938726270_NEIKI.exe
1596	e48282011b4d855bcd15b6a938726270_NEIKI.exe
5020	explorer.exe
5020	explorer.exe
3720	spoolsv.exe
3720	spoolsv.exe
1648	svchost.exe
1648	svchost.exe
4348	spoolsv.exe
4348	spoolsv.exe
5020	explorer.exe
5020	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 5020	1596	e48282011b4d855bcd15b6a938726270_NEIKI.exe	84
PID 1596 wrote to memory of 5020	1596	e48282011b4d855bcd15b6a938726270_NEIKI.exe	84
PID 1596 wrote to memory of 5020	1596	e48282011b4d855bcd15b6a938726270_NEIKI.exe	84
PID 5020 wrote to memory of 3720	5020	explorer.exe	85
PID 5020 wrote to memory of 3720	5020	explorer.exe	85
PID 5020 wrote to memory of 3720	5020	explorer.exe	85
PID 3720 wrote to memory of 1648	3720	spoolsv.exe	86
PID 3720 wrote to memory of 1648	3720	spoolsv.exe	86
PID 3720 wrote to memory of 1648	3720	spoolsv.exe	86
PID 1648 wrote to memory of 4348	1648	svchost.exe	87
PID 1648 wrote to memory of 4348	1648	svchost.exe	87
PID 1648 wrote to memory of 4348	1648	svchost.exe	87
PID 1648 wrote to memory of 4916	1648	svchost.exe	88
PID 1648 wrote to memory of 4916	1648	svchost.exe	88
PID 1648 wrote to memory of 4916	1648	svchost.exe	88
PID 1648 wrote to memory of 512	1648	svchost.exe	109
PID 1648 wrote to memory of 512	1648	svchost.exe	109
PID 1648 wrote to memory of 512	1648	svchost.exe	109
PID 1648 wrote to memory of 4480	1648	svchost.exe	123
PID 1648 wrote to memory of 4480	1648	svchost.exe	123
PID 1648 wrote to memory of 4480	1648	svchost.exe	123

C:\Users\Admin\AppData\Local\Temp\e48282011b4d855bcd15b6a938726270_NEIKI.exe
"C:\Users\Admin\AppData\Local\Temp\e48282011b4d855bcd15b6a938726270_NEIKI.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1596
- \??\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
  - 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:5020
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3720
  - - \??\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
      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:1648
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:4348
    - - C:\Windows\SysWOW64\at.exe
        
        at 05:34 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4916
    - - C:\Windows\SysWOW64\at.exe
        
        at 05:35 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:512
    - - C:\Windows\SysWOW64\at.exe
        
        at 05:36 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\mrsys.exe

Filesize
66KB

MD5
44a2375bbbb5bfc0fe6c36a0e58ec8d2

SHA1
3a481d85886bc66ce88bb3d4481796c75e606848

SHA256
5d75298d2bba4fab94fcb938fb4ccc5883638e46c9a8faa92fcb6511eacb2199

SHA512
e98254895a7e062b39857d1bfd3e5eed499b7e59b1b31b155626f39350796080263bdf2220d514e9e6ff58784e522d0ad88c9ef050fdad6eae559ec7bebba34c

Download Submit
C:\Windows\System\explorer.exe

Filesize
66KB

MD5
3272249970ae7efbd50691dee89e84f1

SHA1
3a2eba2c68ad7829e2f314d6d9f0ca98f753ff75

SHA256
662dfa7c9337381e9c3cf564c120a64393fcfc8faf0ed39b8c9a9c858ffcab66

SHA512
8de3c91412f919c5f394285cdd94ef869a2e1a3c1f1a2d3e78e9a1d00bb7c66dcbeba79eae0c9ce429d2b19187e012642b25f1378b71daa7659ef69e977e7526

Download Submit
C:\Windows\System\spoolsv.exe

Filesize
66KB

MD5
8a90b73170c36a60cb30c21e69326071

SHA1
83e751e947e75e8c38933b3d65ec9204b3ca4080

SHA256
e7619a525b361b50f3ec113014d4ecb14962cc0cdc0e0092f33d5d476bf2d760

SHA512
47d7cfc164d7e2f02f0145181eb3d607804ca6a2657e58d67de71210a522fc33ffbe6007c11a1a0a8ca26455df928601ed71cb05260f3cbb61672da1d1ef3b48

Download Submit
C:\Windows\System\svchost.exe

Filesize
66KB

MD5
3caa0825ef2ef30e905717d9d7aac992

SHA1
0c880c85c92eecfaa0f0766c4641ae84f69f5d65

SHA256
aca4608c7f9672131c8174bc5e492775b5bd2a564451e24334a3852bbb84f3c0

SHA512
fa38cda23fe103721d1d86aa8cd845c5ea5b05ca1529f448185b7c49122b02f571df6841fb66bf334f8e5d75b5c0ac28d64e5c1f2dd9235d7b59ba9638cac856

Download Submit
memory/1596-5-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1596-1-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/1596-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1596-57-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1596-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1596-55-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1596-2-0x0000000075600000-0x000000007575D000-memory.dmp

Filesize
1.4MB

Download
memory/1648-37-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1648-60-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1648-38-0x0000000075600000-0x000000007575D000-memory.dmp

Filesize
1.4MB

Download
memory/1648-43-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3720-26-0x0000000075600000-0x000000007575D000-memory.dmp

Filesize
1.4MB

Download
memory/3720-29-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3720-54-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4348-53-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4348-45-0x0000000075600000-0x000000007575D000-memory.dmp

Filesize
1.4MB

Download
memory/5020-19-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5020-15-0x0000000075600000-0x000000007575D000-memory.dmp

Filesize
1.4MB

Download
memory/5020-13-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5020-58-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5020-14-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5020-69-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download