fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83

General

Target

fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe
Size

771KB
MD5

85e76c61c2e908a158bd8caad053e71c
SHA1

09ea37699137cf20101c418f4ace73cdfaf5656a
SHA256

fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83
SHA512

e1accd43abb2823381b2bc9959870a0aeb58afc638e75dddeb0f48eec2c3f1883dd11da95058a160e9a0982e333b31b2e0b0f341083032d6836a8b2311a8434f
SSDEEP

12288:inaKawSQQ+A1yS5BeM5sy/y/yS5syS5BeM5BeeeeRHZQ+AeDaBaaav:as0YeAaa2YeaeeeeDseDaBaaav

Score

10^/10

adware 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"	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral2/files/0x0005000000022ac0-9.dat	UPX
behavioral2/memory/4684-12-0x0000000010000000-0x000000001010B000-memory.dmp	UPX
behavioral2/memory/4684-15-0x0000000000400000-0x0000000000411000-memory.dmp	UPX

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\spools.exe	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.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"	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0005000000022ac0-9.dat	acprotect
behavioral2/memory/4684-12-0x0000000010000000-0x000000001010B000-memory.dmp	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4684	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0005000000022ac0-9.dat	upx
behavioral2/memory/4684-12-0x0000000010000000-0x000000001010B000-memory.dmp	upx

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\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\cftmon.exe"	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\cftmon.exe"	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.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\{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
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects	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"	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ftpdll.dll	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4684	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4684 wrote to memory of 4188	4684	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe	91
PID 4684 wrote to memory of 4188	4684	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe	91
PID 4684 wrote to memory of 4188	4684	fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe	91

C:\Users\Admin\AppData\Local\Temp\fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.exe
"C:\Users\Admin\AppData\Local\Temp\fd9dc525ad8fa70067716007d38857fc09d2cf4fbbc446d040672cc7930f0d83.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
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4684
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
  2⤵
  - Installs/modifies Browser Helper Object
  PID:4188

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
802KB

MD5
ae96580c30b885c00f30d38bbdf07db5

SHA1
3176765a0df448bedb6a31f321904a0d4ad2d730

SHA256
b5ff81f5005445f0b4905bedad504bae418b35a9916d2307c9094fa526e7f9d5

SHA512
0fa5ef14257bf3f1f7b01aeeff144ac262b73b89f6c47349dfaa5b4a91376d2cb3704e36cc0e941f0ad259e41542177d57156ef1c853d7fc5d26d69a011c270f

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

Filesize
5KB

MD5
d807aa04480d1d149f7a4cac22984188

SHA1
ffd5be65fd10017e34c11cecd105ebf4aa6c0cd9

SHA256
eddf092d901afe128322910c3ff41a3f242d33d6b4cdf91ece327076b324ccbb

SHA512
875543583c20ab164f37a4fb2587d234ce0a15d649d22b0d1dae5933f0a7683db170578746ea4458c51fec26e2243c6ec00dc10db8d4289789e50d5800cf863e

Download Submit
memory/4684-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4684-12-0x0000000010000000-0x000000001010B000-memory.dmp

Filesize
1.0MB

Download
memory/4684-15-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads