darktortilla | 691939843feb83cbbeb6802fccb8d7ac8e6cbd7f7c676e5a9eb549353691db88

Analysis

max time kernel
149s
max time network
125s
platform
windows11-21h2_x64
resource
win11-20251015-en
resource tags

arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
submitted
16/10/2025, 06:43

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General

Target
SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
Size 1.3MB
Sample251016-hg2bcadj3t
SHA256 691939843feb83cbbeb6802fccb8d7ac8e6cbd7f7c676e5a9eb549353691db88
MD5 19125edc1d7688ba984abfeccf34b93e
SHA1 bc1a40df5d28d274bd6d1dfaf1dacea5391ef0c2
SHA512 4f45cdef3faee579c1b97fb265da04bacd1f54b5102127c507cd2be3218b49fc54704efb324489cc5df15ff251a7231db3f330ff783970d8a371843404897e48
SSDEEP 24576:INF1icYGpoDcMCnRveYepqMKDmfC4KOSSn2c6G:OF181DgRveYkqM3fC41p2e
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

es xworm crypter discovery darktortilla remcos loader persistence rat

Malware Config

Extracted

Family

remcos

Version

3.8.0 Pro

Botnet

ES XWORM

rency.ydns.eu:2404
wqo9.firewall-gateway.de:4045
code1.ydns.eu:9302

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
System.exe
copy_folder
MicroSoft Outlook
delete_file
false
hide_file
true
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
TCWd3hQ5LP1Fcm2U5B0fn3xuWp5u5rQsC2Y-DJRO57
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
MicroSoft
take_screenshot_option
false
take_screenshot_time
5

Signatures

Darktortilla
DarkTortilla is a highly configurable .NET based crypter that delivers a wide range of information stealers.
loader crypter darktortilla
Darktortilla family
darktortilla

Detects Darktortilla crypter. 1 IoCs

resource	yara_rule
behavioral2/memory/5884-6-0x0000000005020000-0x0000000005062000-memory.dmp	darktortilla

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Executes dropped EXE 4 IoCs

pid	Process
4964	Services.exe
5616	Services.exe
4040	Services.exe
5840	Services.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3261906842-2611857369-1513979305-1000\Software\Microsoft\Windows\CurrentVersion\Run\Services = "C:\\Users\\Admin\\AppData\\Roaming\\Services.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4964 set thread context of 4040	4964	Services.exe	95
PID 5616 set thread context of 5840	5616	Services.exe	97

System Location Discovery: System Language Discovery 1 TTPs 10 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	Services.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.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	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Services.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Services.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 5 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
5112	PING.EXE
1664	cmd.exe
704	PING.EXE
4524	cmd.exe
2348	PING.EXE

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
704	PING.EXE
2348	PING.EXE
5112	PING.EXE

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
4964	Services.exe
4964	Services.exe
4964	Services.exe
5616	Services.exe
5616	Services.exe
5616	Services.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
Token: SeDebugPrivilege	4964	Services.exe
Token: SeDebugPrivilege	5616	Services.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4040	Services.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 5884 wrote to memory of 1664	5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe	78
PID 5884 wrote to memory of 1664	5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe	78
PID 5884 wrote to memory of 1664	5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe	78
PID 1664 wrote to memory of 704	1664	cmd.exe	80
PID 1664 wrote to memory of 704	1664	cmd.exe	80
PID 1664 wrote to memory of 704	1664	cmd.exe	80
PID 5884 wrote to memory of 4524	5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe	81
PID 5884 wrote to memory of 4524	5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe	81
PID 5884 wrote to memory of 4524	5884	SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe	81
PID 4524 wrote to memory of 2348	4524	cmd.exe	83
PID 4524 wrote to memory of 2348	4524	cmd.exe	83
PID 4524 wrote to memory of 2348	4524	cmd.exe	83
PID 1664 wrote to memory of 3676	1664	cmd.exe	84
PID 1664 wrote to memory of 3676	1664	cmd.exe	84
PID 1664 wrote to memory of 3676	1664	cmd.exe	84
PID 4524 wrote to memory of 5112	4524	cmd.exe	92
PID 4524 wrote to memory of 5112	4524	cmd.exe	92
PID 4524 wrote to memory of 5112	4524	cmd.exe	92
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4964 wrote to memory of 4040	4964	Services.exe	95
PID 4524 wrote to memory of 5616	4524	cmd.exe	96
PID 4524 wrote to memory of 5616	4524	cmd.exe	96
PID 4524 wrote to memory of 5616	4524	cmd.exe	96
PID 5616 wrote to memory of 5840	5616	Services.exe	97
PID 5616 wrote to memory of 5840	5616	Services.exe	97
PID 5616 wrote to memory of 5840	5616	Services.exe	97
PID 5616 wrote to memory of 5840	5616	Services.exe	97
PID 5616 wrote to memory of 5840	5616	Services.exe	97
PID 5616 wrote to memory of 5840	5616	Services.exe	97
PID 5616 wrote to memory of 5840	5616	Services.exe	97
PID 5616 wrote to memory of 5840	5616	Services.exe	97
PID 5616 wrote to memory of 5840	5616	Services.exe	97
PID 5616 wrote to memory of 5840	5616	Services.exe	97
PID 5616 wrote to memory of 5840	5616	Services.exe	97
PID 5616 wrote to memory of 5840	5616	Services.exe	97

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5884
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 6 > nul && REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Services" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Services.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1664
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 6
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:704
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Services" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Services.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:3676
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 12 > nul && copy "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.DarkTortillaNET.1.9751.32573.exe" "C:\Users\Admin\AppData\Roaming\Services.exe" && ping 127.0.0.1 -n 12 > nul && "C:\Users\Admin\AppData\Roaming\Services.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4524
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 12
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2348
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 12
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:5112
- - C:\Users\Admin\AppData\Roaming\Services.exe
    "C:\Users\Admin\AppData\Roaming\Services.exe"
    3⤵
    - 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:5616
  - - C:\Users\Admin\AppData\Roaming\Services.exe
      "C:\Users\Admin\AppData\Roaming\Services.exe"
      4⤵
      Executes dropped EXE
      PID:5840

C:\Users\Admin\AppData\Roaming\Services.exe
C:\Users\Admin\AppData\Roaming\Services.exe
1⤵
- 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:4964
- C:\Users\Admin\AppData\Roaming\Services.exe
  "C:\Users\Admin\AppData\Roaming\Services.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4040

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 102B
SHA256 687f887cf5626350c445ef7c3839ed096d1862724379f98b6f67651824a272fb
MD5 271ca2ecd319483c69edb5cfb1a21c9c
SHA1 5e11d6327bc68583a909ef8d50e6204ac0df66d8
SHA512 2b2bc72408e3c3a98ebe4a277446a52833f2c1de7a045c70bc978d589063043ee977d3546266d30b5c7ea61253f0b69b1184b6b5d96b2cd3ceada57022c41f02
MD5 SHA1 SHA512

Submit Download

Services.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Services.exe.log
Size 1KB
SHA256 b5e2d2dc85e12de6818fb7bc591a15b66a508610f2ecec1d92547907cb57a9be
MD5 d7dd8577a6c5a7779f2b89990673ceaf
SHA1 8ef5bac398ef64b111ff9ce59de164e859c4f057
SHA512 73ea6fb8fa9d0e36a56e832f9d484d139b298d2e74ea48c663a128aed74dcd397bda353b6bcab27ac1b164da1c0ebda4f9271676f28f68da108f410b1a8a8dba
MD5 SHA1 SHA512

Submit Download

Services.exe

Path C:\Users\Admin\AppData\Roaming\Services.exe
Size 1.3MB
SHA256 691939843feb83cbbeb6802fccb8d7ac8e6cbd7f7c676e5a9eb549353691db88
MD5 19125edc1d7688ba984abfeccf34b93e
SHA1 bc1a40df5d28d274bd6d1dfaf1dacea5391ef0c2
SHA512 4f45cdef3faee579c1b97fb265da04bacd1f54b5102127c507cd2be3218b49fc54704efb324489cc5df15ff251a7231db3f330ff783970d8a371843404897e48
SSDEEP 24576:INF1icYGpoDcMCnRveYepqMKDmfC4KOSSn2c6G:OF181DgRveYkqM3fC41p2e
MD5 SHA1 SHA512 SSDEEP

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memory/4040-27-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/4040-21-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/4040-47-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/4040-46-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/4040-39-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/4040-38-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/4040-26-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/4040-25-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/4040-24-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/4040-17-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/4040-20-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/4964-13-0x00000000073D0000-0x00000000073E6000-memory.dmp

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memory/4964-14-0x00000000073F0000-0x00000000073F6000-memory.dmp

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memory/5616-16-0x00000000065E0000-0x00000000065F6000-memory.dmp

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memory/5840-32-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/5884-4-0x0000000004F20000-0x0000000004F30000-memory.dmp

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memory/5884-0-0x0000000000340000-0x0000000000492000-memory.dmp

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memory/5884-2-0x0000000004F30000-0x0000000004FCC000-memory.dmp

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memory/5884-1-0x00000000055D0000-0x0000000005B76000-memory.dmp

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memory/5884-3-0x00000000050C0000-0x0000000005152000-memory.dmp

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memory/5884-7-0x0000000004F20000-0x0000000004F30000-memory.dmp

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memory/5884-6-0x0000000005020000-0x0000000005062000-memory.dmp

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memory/5884-5-0x0000000004FF0000-0x0000000004FFA000-memory.dmp

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