3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7

General

Target

3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe
Size

346KB
MD5

c587fd4e8d313c623935d953ecbb3720
SHA1

92ba834ea60e115e8b50b092ce06d8a9655b1085
SHA256

3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7
SHA512

bc05fd0b15cd5adcac59b2ca4e6b49cb8c71ffddcd170a4791cae94103db29879b21752d65efd16d683f19beb3ef5af8e38dea82ffc3ff71314920a302403798
SSDEEP

6144:i75GR5GGCraK5GGCraByibSxbSuw5syJag558ag55c21rCag558jEqP9:itSIawIaBy8eM5syX5u5mMS5qV

Score

10^/10

adware discovery persistence stealer upx

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"	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\spools.exe	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Schedule\ImagePath = "C:\\Windows\\system32\\drivers\\spools.exe"	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe

ACProtect 1.3x - 1.4x DLL software 3 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000d000000023afa-9.dat	acprotect
behavioral2/memory/2308-12-0x0000000010000000-0x000000001010B000-memory.dmp	acprotect
behavioral2/memory/2308-14-0x0000000010000000-0x000000001010B000-memory.dmp	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2308	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.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\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\cftmon.exe"	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\cftmon.exe"	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe

Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}	reg.exe

Modifies WinLogon 2 TTPs 1 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\UIHost = "logonui.exe"	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ftpdll.dll	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000d000000023afa-9.dat	upx
behavioral2/memory/2308-12-0x0000000010000000-0x000000001010B000-memory.dmp	upx
behavioral2/memory/2308-14-0x0000000010000000-0x000000001010B000-memory.dmp	upx

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	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2308	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 2692	2308	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe	90
PID 2308 wrote to memory of 2692	2308	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe	90
PID 2308 wrote to memory of 2692	2308	3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe	90

C:\Users\Admin\AppData\Local\Temp\3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe
"C:\Users\Admin\AppData\Local\Temp\3726debd83b62c62b44cf71b978618df60107945c47ee428e3e1aa1bd2c3b6a7N.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Sets service image path in registry
- Loads dropped DLL
- Adds Run key to start application
- Modifies WinLogon
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  PID:2692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

Browser Extensions

Privilege Escalation

Boot or Logon Autostart Execution

4

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

2

T1547.004

Defense Evasion

Modify Registry

5

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:\Users\Admin\AppData\Local\cftmon.exe

Filesize
350KB

MD5
caa7ce0b5f6761084eef20a94bd3c29f

SHA1
901164f3da05c4fdef7ea5b108bffb8f3c8ff75a

SHA256
86d54c1ab1a098df1e4f892a9cdfdc222132a126a00bae218e642bf038a325ed

SHA512
6e3c8ef8ff26f2889cc0d890b7de2a39935100563796896face998bea85e878eacd52b766db3f38443e000f214756d3c1286e3ec25fd0691ef12ed20ea020d40

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

Filesize
5KB

MD5
d807aa04480d1d149f7a4cac22984188

SHA1
ffd5be65fd10017e34c11cecd105ebf4aa6c0cd9

SHA256
eddf092d901afe128322910c3ff41a3f242d33d6b4cdf91ece327076b324ccbb

SHA512
875543583c20ab164f37a4fb2587d234ce0a15d649d22b0d1dae5933f0a7683db170578746ea4458c51fec26e2243c6ec00dc10db8d4289789e50d5800cf863e

Download Submit
memory/2308-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2308-12-0x0000000010000000-0x000000001010B000-memory.dmp

Filesize
1.0MB

Download
memory/2308-13-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2308-14-0x0000000010000000-0x000000001010B000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads