b628148ce69e72e3911fecc6214f09ab7eaab36e040080b03e039ffa7294de67

Analysis

max time kernel
149s
max time network
121s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
11/03/2024, 14:38

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General

Target

c0d7a664b120d11300b9f786f3d78550.exe
Size

1.6MB
MD5

c0d7a664b120d11300b9f786f3d78550
SHA1

7721f1f2f50e310752501fc36f38024cd8f9ccdb
SHA256

b628148ce69e72e3911fecc6214f09ab7eaab36e040080b03e039ffa7294de67
SHA512

01aa25d7c3309945b6b8c4d6d470f9168ccdef021d20a729bed906fce3a69cf44d6f7cfc478bda359ca2805c94d3ea0afaa833244f60a07e91e45ff2dddf1be8
SSDEEP

12288:vu9MsBj7TbVc+MFdK8zWqiTSGIrzguvYDyph:NWXTBcFrK8zWqiS5gQXh

Score

10^/10

persistence

Malware Config

Signatures

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 = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	c0d7a664b120d11300b9f786f3d78550.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	services.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	c0d7a664b120d11300b9f786f3d78550.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	c0d7a664b120d11300b9f786f3d78550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	services.exe

Modifies Installed Components in the registry 2 TTPs 5 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\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	c0d7a664b120d11300b9f786f3d78550.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	c0d7a664b120d11300b9f786f3d78550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	services.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}	c0d7a664b120d11300b9f786f3d78550.exe

Deletes itself 1 IoCs

pid	Process
2692	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2376	fservice.exe
2744	services.exe

Loads dropped DLL 4 IoCs

pid	Process
2244	c0d7a664b120d11300b9f786f3d78550.exe
2244	c0d7a664b120d11300b9f786f3d78550.exe
2744	services.exe
2744	services.exe

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	c0d7a664b120d11300b9f786f3d78550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	services.exe

Drops file in System32 directory 8 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\fservice.exe	fservice.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	fservice.exe
File created	C:\Windows\SysWOW64\winkey.dll	services.exe
File created	C:\Windows\SysWOW64\reginv.dll	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	c0d7a664b120d11300b9f786f3d78550.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	c0d7a664b120d11300b9f786f3d78550.exe
File created	C:\Windows\SysWOW64\fservice.exe-up.txt	fservice.exe

Drops file in Windows directory 9 IoCs

description	ioc	Process
File created	C:\Windows\services.exe	fservice.exe
File opened for modification	C:\Windows\system\sservice.exe	fservice.exe
File created	C:\Windows\services.exe-up.txt	services.exe
File created	C:\Windows\system\sservice.exe	services.exe
File opened for modification	C:\Windows\system\sservice.exe	services.exe
File created	C:\Windows\system\sservice.exe	c0d7a664b120d11300b9f786f3d78550.exe
File opened for modification	C:\Windows\system\sservice.exe	c0d7a664b120d11300b9f786f3d78550.exe
File opened for modification	C:\Windows\services.exe	fservice.exe
File created	C:\Windows\system\sservice.exe	fservice.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe
2744	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2744	services.exe
2744	services.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2376	2244	c0d7a664b120d11300b9f786f3d78550.exe	28
PID 2244 wrote to memory of 2376	2244	c0d7a664b120d11300b9f786f3d78550.exe	28
PID 2244 wrote to memory of 2376	2244	c0d7a664b120d11300b9f786f3d78550.exe	28
PID 2244 wrote to memory of 2376	2244	c0d7a664b120d11300b9f786f3d78550.exe	28
PID 2244 wrote to memory of 2692	2244	c0d7a664b120d11300b9f786f3d78550.exe	29
PID 2244 wrote to memory of 2692	2244	c0d7a664b120d11300b9f786f3d78550.exe	29
PID 2244 wrote to memory of 2692	2244	c0d7a664b120d11300b9f786f3d78550.exe	29
PID 2244 wrote to memory of 2692	2244	c0d7a664b120d11300b9f786f3d78550.exe	29
PID 2376 wrote to memory of 2744	2376	fservice.exe	31
PID 2376 wrote to memory of 2744	2376	fservice.exe	31
PID 2376 wrote to memory of 2744	2376	fservice.exe	31
PID 2376 wrote to memory of 2744	2376	fservice.exe	31
PID 2744 wrote to memory of 2492	2744	services.exe	32
PID 2744 wrote to memory of 2492	2744	services.exe	32
PID 2744 wrote to memory of 2492	2744	services.exe	32
PID 2744 wrote to memory of 2492	2744	services.exe	32
PID 2744 wrote to memory of 2524	2744	services.exe	33
PID 2744 wrote to memory of 2524	2744	services.exe	33
PID 2744 wrote to memory of 2524	2744	services.exe	33
PID 2744 wrote to memory of 2524	2744	services.exe	33
PID 2492 wrote to memory of 2996	2492	NET.exe	36
PID 2492 wrote to memory of 2996	2492	NET.exe	36
PID 2492 wrote to memory of 2996	2492	NET.exe	36
PID 2492 wrote to memory of 2996	2492	NET.exe	36
PID 2524 wrote to memory of 2364	2524	NET.exe	37
PID 2524 wrote to memory of 2364	2524	NET.exe	37
PID 2524 wrote to memory of 2364	2524	NET.exe	37
PID 2524 wrote to memory of 2364	2524	NET.exe	37

C:\Users\Admin\AppData\Local\Temp\c0d7a664b120d11300b9f786f3d78550.exe
"C:\Users\Admin\AppData\Local\Temp\c0d7a664b120d11300b9f786f3d78550.exe"
1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Modifies Installed Components in the registry
- Loads dropped DLL
- Modifies WinLogon
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\SysWOW64\fservice.exe
  C:\Windows\system32\fservice.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2376
- - C:\Windows\services.exe
    C:\Windows\services.exe -XP
    3⤵
    - Modifies WinLogon for persistence
    - Adds policy Run key to start application
    - Modifies Installed Components in the registry
    - Executes dropped EXE
    - Loads dropped DLL
    - Modifies WinLogon
    - Drops file in System32 directory
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2744
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2492
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP srservice
        5⤵
        
        PID:2996
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2524
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        
        PID:2364
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\c0d7a664b120d11300b9f786f3d78550.exe.bat
  2⤵
  - Deletes itself
  PID:2692

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

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\c0d7a664b120d11300b9f786f3d78550.exe.bat

Filesize
133B

MD5
81405f3a78124620c48a11783e805a7d

SHA1
77eec4d59be0a5c967cdaf47d03673535c8c158c

SHA256
d77830f2bf89e840506e06d5bb1a01a8a75c577c78093583a6e28e5c6fad09ea

SHA512
8f81f06218537f11671fcbc11dd9088476052908724a2eee3bda42955d89e58eb00fcb49ff540630a39831edb39f4c634f6454ea5766b8f8c4ca86774ac3bb84

Download Submit
C:\Windows\SysWOW64\reginv.dll

Filesize
36KB

MD5
d4a3f90e159ffbcbc4f9740de4b7f171

SHA1
0542f5d1e2c23dca8d90766b3a8537dc3880e5c9

SHA256
2200dd5f83d2fb8c5d3994206a4fa9ff34b4cbfe56ed39a9a03c954cf45d8f77

SHA512
5493beb50b5f7d8ec52f32718d01696916ae173456005d0c1294ce695161ce5004aff58ee3892bf5db0f9b23720146a6d3ae8ffbcbbd81f84d894fdc8cf75a94

Download Submit
C:\Windows\system\sservice.exe

Filesize
1.5MB

MD5
22b206d84a55101032dffb2eabfd98c0

SHA1
26b045b2ded9fb92e7a65a26e2c81d910bf4a095

SHA256
5696644b5d6ff92e34e8310ae2338bb7e996578bb7582b25e2479dc22f7c6e9e

SHA512
e577cd85ce1c46dda00797b7f2e881b7edd6e3e52160d3e674dfb2a8e744403965f2357960be1faa97739e3ce685b9ee9ad083d34d9b349a0a3eb36fecbf0cf0

Download Submit
\Windows\SysWOW64\fservice.exe

Filesize
1.6MB

MD5
c0d7a664b120d11300b9f786f3d78550

SHA1
7721f1f2f50e310752501fc36f38024cd8f9ccdb

SHA256
b628148ce69e72e3911fecc6214f09ab7eaab36e040080b03e039ffa7294de67

SHA512
01aa25d7c3309945b6b8c4d6d470f9168ccdef021d20a729bed906fce3a69cf44d6f7cfc478bda359ca2805c94d3ea0afaa833244f60a07e91e45ff2dddf1be8

Download Submit
\Windows\SysWOW64\winkey.dll

Filesize
24KB

MD5
43e7d9b875c921ba6be38d45540fb9dd

SHA1
f22a73fc0d4aa3ea6c0b8f61d974b028f308acc4

SHA256
f1b2b0abe844e6ba812c7f8709a463a7f6c56fa6ac38d376a0739cc3469f795b

SHA512
2e74e23c0875b69b82319391c392132f28f4eb45aa412805130382498ae48969a06a2b3a7528b626fa7d7ddb6b006f19f0ef8d73cf73cb9a0c0df44a21077622

Download Submit
memory/2244-24-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2244-8-0x0000000003410000-0x0000000003627000-memory.dmp

Filesize
2.1MB

Download
memory/2244-15-0x0000000003410000-0x0000000003627000-memory.dmp

Filesize
2.1MB

Download
memory/2244-0-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2244-7-0x0000000000640000-0x0000000000641000-memory.dmp

Filesize
4KB

Download
memory/2244-1-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2376-37-0x0000000003440000-0x0000000003657000-memory.dmp

Filesize
2.1MB

Download
memory/2376-36-0x0000000000640000-0x0000000000641000-memory.dmp

Filesize
4KB

Download
memory/2376-38-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2376-35-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2376-17-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-59-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-64-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-45-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-58-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-39-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-60-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-61-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-62-0x0000000000640000-0x0000000000641000-memory.dmp

Filesize
4KB

Download
memory/2744-63-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-46-0x0000000000640000-0x0000000000641000-memory.dmp

Filesize
4KB

Download
memory/2744-65-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-66-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-67-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-68-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-69-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-70-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-71-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-72-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download
memory/2744-73-0x0000000000400000-0x0000000000617000-memory.dmp

Filesize
2.1MB

Download