darktortilla | 5ea572bc60e811027a4cb1098794eb2dc6bdeae545d8eb27b66c0b48b1688efe

Analysis

max time kernel
150s
max time network
149s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
20/05/2026, 17:44

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General

Target
PROFORMA_INVOICE.exe
Size 540KB
Sample260520-wbb16ae16p
SHA256 5ea572bc60e811027a4cb1098794eb2dc6bdeae545d8eb27b66c0b48b1688efe
MD5 e46c6772ad83c5bde17092d0b013c363
SHA1 35e02fa0d957d7f70a339d69231b69fbc90909e0
SHA512 0635b2a9e8ae8e4fc5dfeb5a1847240582d73c09786307ce43f6ac2cba66405e390faf31ea6794f05dc8df9b8f0260d09b47edeed94df2e9eed41385b9af3c29
SSDEEP 12288:qf+mzSvmyE4neC/YOm41RBUXypPDbFsIFE0+ThX:uPzSeyEUT9RBU8FNch
TLSH
T1F2C4BE4D23E85A94F9BE2F70957442985B71B91BAD33D32E1B8476FA0F227428D107B3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

collection crypter discovery darktortilla masslogger loader persistence spyware stealer

Malware Config

Extracted

Family

masslogger

Attributes

exfiltration_mode
#SMTPEnabled
expire_time_date
2025-02-19
host_password
goodGod2024
host_port
587
host_receiver
[email protected]
host_sender
[email protected]
host_server
mail.mzgold.ir
ssl_slate
True

Signatures

Family: Darktortilla
DarkTortilla is a highly configurable .NET based crypter that delivers a wide range of information stealers.
loader crypter darktortilla
Family: MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

Detects Darktortilla crypter. 1 IoCs

resource	yara_rule
behavioral2/memory/5040-5-0x00000000052B0000-0x00000000052D6000-memory.dmp	darktortilla

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2654269261-3199571979-4291878722-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\skype\\skype.exe,"	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2654269261-3199571979-4291878722-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\skype\\skype.exe,"	reg.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
3292	skype.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2654269261-3199571979-4291878722-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-2654269261-3199571979-4291878722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-2654269261-3199571979-4291878722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	checkip.dyndns.org
1	reallyfreegeoip.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3292 set thread context of 3456	3292	skype.exe	98

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 13 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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skype.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skype.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PROFORMA_INVOICE.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 7 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4232	PING.EXE
2524	PING.EXE
1188	cmd.exe
1940	PING.EXE
4016	cmd.exe
4428	PING.EXE
4572	cmd.exe

Runs ping.exe 1 TTPs 4 IoCs

Remote System Discovery

T1018

pid	Process
1940	PING.EXE
4428	PING.EXE
4232	PING.EXE
2524	PING.EXE

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
5040	PROFORMA_INVOICE.exe
5040	PROFORMA_INVOICE.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
4020	skype.exe
3292	skype.exe
3292	skype.exe
3292	skype.exe
3292	skype.exe
3292	skype.exe
3292	skype.exe
3292	skype.exe
3456	InstallUtil.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
5040	PROFORMA_INVOICE.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	5040	PROFORMA_INVOICE.exe
Token: SeDebugPrivilege	4020	skype.exe
Token: SeDebugPrivilege	3292	skype.exe
Token: SeDebugPrivilege	3456	InstallUtil.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 5040 wrote to memory of 1188	5040	PROFORMA_INVOICE.exe	81
PID 1188 wrote to memory of 1940	1188	cmd.exe	83
PID 5040 wrote to memory of 4020	5040	PROFORMA_INVOICE.exe	84
PID 4020 wrote to memory of 4016	4020	skype.exe	85
PID 4016 wrote to memory of 4428	4016	cmd.exe	87
PID 4020 wrote to memory of 4572	4020	skype.exe	88
PID 4572 wrote to memory of 4232	4572	cmd.exe	90
PID 1188 wrote to memory of 3136	1188	cmd.exe	91
PID 4016 wrote to memory of 1148	4016	cmd.exe	93
PID 4572 wrote to memory of 2524	4572	cmd.exe	94
PID 4572 wrote to memory of 3292	4572	cmd.exe	95
PID 3292 wrote to memory of 3600	3292	skype.exe	96
PID 3292 wrote to memory of 3600	3292	skype.exe	96
PID 3292 wrote to memory of 3600	3292	skype.exe	96
PID 3292 wrote to memory of 3600	3292	skype.exe	96
PID 3292 wrote to memory of 3600	3292	skype.exe	96
PID 3292 wrote to memory of 3812	3292	skype.exe	97
PID 3292 wrote to memory of 3812	3292	skype.exe	97
PID 3292 wrote to memory of 3812	3292	skype.exe	97
PID 3292 wrote to memory of 3812	3292	skype.exe	97
PID 3292 wrote to memory of 3812	3292	skype.exe	97
PID 3292 wrote to memory of 3456	3292	skype.exe	98
PID 3292 wrote to memory of 3456	3292	skype.exe	98
PID 3292 wrote to memory of 3456	3292	skype.exe	98
PID 3292 wrote to memory of 3456	3292	skype.exe	98
PID 3292 wrote to memory of 3456	3292	skype.exe	98

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2654269261-3199571979-4291878722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2654269261-3199571979-4291878722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\PROFORMA_INVOICE.exe
"C:\Users\Admin\AppData\Local\Temp\PROFORMA_INVOICE.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 13 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1188
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 13
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1940
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
    3⤵
    - Modifies WinLogon for persistence
    - System Location Discovery: System Language Discovery
    PID:3136
- C:\Users\Admin\AppData\Local\Temp\skype.exe
  "C:\Users\Admin\AppData\Local\Temp\skype.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4020
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c ping 127.0.0.1 -n 16 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:4016
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 16
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:4428
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
      4⤵
      Modifies WinLogon for persistence
      System Location Discovery: System Language Discovery
      PID:1148
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c ping 127.0.0.1 -n 25 > nul && copy "C:\Users\Admin\AppData\Local\Temp\skype.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe" && ping 127.0.0.1 -n 25 > nul && "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe"
    3⤵
    - Drops startup file
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:4572
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 25
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:4232
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 25
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2524
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3292
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
        5⤵
        
        PID:3600
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
        5⤵
        
        PID:3812
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
        5⤵
        Accesses Microsoft Outlook profiles
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        outlook_office_path
        outlook_win_path
        
        PID:3456

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

skype.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\skype.exe.log
Size 1KB
SHA256 45a879c023503d00fa6d64a36205f831864b8807e55ca3197f3ffbc4435f3f1a
MD5 eeaa39dd521efd4805ec884df1bf9ce2
SHA1 77369319ba75aeae5a87bfce7901b55cc8bced5a
SHA512 eb27d377825115c2a27a85bbef2552ec4756df75b8dc38fca50dc8f9c5045b08ac8124d4617ecec875cdc66724c12480ab9c2ce799d69750c952fe756c2ac6dc
TLSH
T193216D303231B5D84D422F5308586AC566FF0745BAB8DF6CB699235EDD2A047AB221F3
MD5 SHA1 SHA512 TLSH

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skype.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe
Size 540KB
SHA256 5ea572bc60e811027a4cb1098794eb2dc6bdeae545d8eb27b66c0b48b1688efe
MD5 e46c6772ad83c5bde17092d0b013c363
SHA1 35e02fa0d957d7f70a339d69231b69fbc90909e0
SHA512 0635b2a9e8ae8e4fc5dfeb5a1847240582d73c09786307ce43f6ac2cba66405e390faf31ea6794f05dc8df9b8f0260d09b47edeed94df2e9eed41385b9af3c29
SSDEEP 12288:qf+mzSvmyE4neC/YOm41RBUXypPDbFsIFE0+ThX:uPzSeyEUT9RBU8FNch
TLSH
T1F2C4BE4D23E85A94F9BE2F70957442985B71B91BAD33D32E1B8476FA0F227428D107B3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3292-19-0x00000000080F0000-0x00000000080F6000-memory.dmp

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memory/3292-18-0x00000000080C0000-0x00000000080DA000-memory.dmp

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memory/3456-21-0x00000000062F0000-0x0000000006340000-memory.dmp

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memory/3456-20-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4020-9-0x00000000051A0000-0x00000000051B0000-memory.dmp

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memory/4020-10-0x00000000051A0000-0x00000000051B0000-memory.dmp

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memory/5040-7-0x0000000007960000-0x0000000007E8C000-memory.dmp

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memory/5040-0-0x0000000000950000-0x00000000009DE000-memory.dmp

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memory/5040-6-0x00000000054C0000-0x00000000054CA000-memory.dmp

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memory/5040-5-0x00000000052B0000-0x00000000052D6000-memory.dmp

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memory/5040-4-0x0000000005690000-0x00000000056A0000-memory.dmp

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memory/5040-3-0x00000000054E0000-0x000000000557C000-memory.dmp

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memory/5040-2-0x0000000005310000-0x00000000053A2000-memory.dmp

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memory/5040-1-0x00000000059F0000-0x0000000005F96000-memory.dmp

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