darkcloud | 495ebfa4a23110b80b574a0dd8cf31022b207c50d2623ce9ac5156bc7660669e

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20251016-en
resource tags

arch:x64arch:x86image:win10v2004-20251016-enlocale:en-usos:windows10-2004-x64system
submitted
10/11/2025, 08:23

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General

Target
BBVA-PAGO.exe
Size 1.2MB
Sample251110-j98fssdn21
SHA256 495ebfa4a23110b80b574a0dd8cf31022b207c50d2623ce9ac5156bc7660669e
MD5 9ed0d8c88bffa379f5df36202d605cc4
SHA1 0819d433f5cab4de26c98ca3b0c3b087e7cb529a
SHA512 e0d045f6a9cc39be9aeae1cf61399f5384b351edd46eeb40746febf7dfca5e828f5cf879c373a8dc7747702d88db1fb9f206fbeae845c4f636a5c830d3042b19
SSDEEP 12288:avezD6ZtwCj87r4YSkIv8Xu0/9gZr4z8hsbG38hQY/pUjvz8+DY1GKQzSnMgwe+C:wqD64Cj8YD0e0y2i386YhUjYQgZQzJA
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

crypter discovery darkcloud darktortilla loader persistence spyware stealer

Malware Config

Signatures

DarkCloud
An information stealer written in Visual Basic.
stealer darkcloud
Darkcloud family
darkcloud
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
behavioral1/memory/4800-4-0x0000000003140000-0x0000000003180000-memory.dmp	darktortilla

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/memory/4800-4-0x0000000003140000-0x0000000003180000-memory.dmp	net_reactor

Executes dropped EXE 2 IoCs

pid	Process
2816	firebrats.exe
4968	firebrats.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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-1-5-21-1919182765-2457925700-1517026611-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\boort = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\firebrats.exe"	BBVA-PAGO.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4800 set thread context of 6056	4800	BBVA-PAGO.exe	87
PID 2816 set thread context of 4968	2816	firebrats.exe	102

System Location Discovery: System Language Discovery 1 TTPs 4 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	BBVA-PAGO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BBVA-PAGO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	firebrats.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	firebrats.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4800	BBVA-PAGO.exe
4800	BBVA-PAGO.exe
2816	firebrats.exe
2816	firebrats.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4800	BBVA-PAGO.exe
Token: SeDebugPrivilege	2816	firebrats.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
6056	BBVA-PAGO.exe
4968	firebrats.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 6056	4800	BBVA-PAGO.exe	87
PID 4800 wrote to memory of 6056	4800	BBVA-PAGO.exe	87
PID 4800 wrote to memory of 6056	4800	BBVA-PAGO.exe	87
PID 4800 wrote to memory of 6056	4800	BBVA-PAGO.exe	87
PID 4800 wrote to memory of 6056	4800	BBVA-PAGO.exe	87
PID 4800 wrote to memory of 6056	4800	BBVA-PAGO.exe	87
PID 4800 wrote to memory of 6056	4800	BBVA-PAGO.exe	87
PID 4800 wrote to memory of 6056	4800	BBVA-PAGO.exe	87
PID 2816 wrote to memory of 4968	2816	firebrats.exe	102
PID 2816 wrote to memory of 4968	2816	firebrats.exe	102
PID 2816 wrote to memory of 4968	2816	firebrats.exe	102
PID 2816 wrote to memory of 4968	2816	firebrats.exe	102
PID 2816 wrote to memory of 4968	2816	firebrats.exe	102
PID 2816 wrote to memory of 4968	2816	firebrats.exe	102
PID 2816 wrote to memory of 4968	2816	firebrats.exe	102
PID 2816 wrote to memory of 4968	2816	firebrats.exe	102

C:\Users\Admin\AppData\Local\Temp\BBVA-PAGO.exe
"C:\Users\Admin\AppData\Local\Temp\BBVA-PAGO.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Users\Admin\AppData\Local\Temp\BBVA-PAGO.exe
  "C:\Users\Admin\AppData\Local\Temp\BBVA-PAGO.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:6056

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\firebrats.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\firebrats.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:2816
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\firebrats.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\firebrats.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4968

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

LoginData

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\ONVRCCGL-Admin\LoginData
Size 56KB
SHA256 bb923abf471bb79086ff9ace293602e1ad882d9af7946dda17ff1c3a7e19f45b
MD5 1c832d859b03f2e59817374006fe1189
SHA1 a4994a54e9f46a6c86ff92280c6dabe2bcd4cc42
SHA512 c4d3be414fa5dd30151cde9f6d808d56c26b031ff3f6446d21a15d071053787b6ba337b12909a56af7bb420f858dba5213f08e64ca9f836f52c98a18762b4bef
SSDEEP 96:QkS/KLPeymOcVizhGNOnfXG38tyvFbn8MouB6w9f/nP:04cVizhGNOnu/7Iw9fP
MD5 SHA1 SHA512 SSDEEP

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WebData

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\ONVRCCGL-Admin\WebData
Size 228KB
SHA256 3a07b3003758a79a574aa73032076567870389751f2a959537257070da3a10d8
MD5 ee463e048e56b687d02521cd12788e2c
SHA1 ee26598f8e8643df84711960e66a20ecbc6321b8
SHA512 42b395bf6bd97da800385b9296b63a4b0edd7b3b50dc92f19e61a89235a42d37d204359b57d506e6b25ab95f16625cce035ed3b55ef2d54951c82332498dab0f
SSDEEP 192:J1mo3fT8a0QQnGzaW6qt8K+dJIhPJyiqzX1i+VpdssMV7due8FPu:r73fQrQQnyn6qt8K+dJIhPJyvzl5cYP
MD5 SHA1 SHA512 SSDEEP

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firebrats.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\firebrats.exe
Size 1.2MB
SHA256 495ebfa4a23110b80b574a0dd8cf31022b207c50d2623ce9ac5156bc7660669e
MD5 9ed0d8c88bffa379f5df36202d605cc4
SHA1 0819d433f5cab4de26c98ca3b0c3b087e7cb529a
SHA512 e0d045f6a9cc39be9aeae1cf61399f5384b351edd46eeb40746febf7dfca5e828f5cf879c373a8dc7747702d88db1fb9f206fbeae845c4f636a5c830d3042b19
SSDEEP 12288:avezD6ZtwCj87r4YSkIv8Xu0/9gZr4z8hsbG38hQY/pUjvz8+DY1GKQzSnMgwe+C:wqD64Cj8YD0e0y2i386YhUjYQgZQzJA
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2816-31-0x0000000005860000-0x0000000005870000-memory.dmp

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memory/2816-30-0x0000000007700000-0x0000000007716000-memory.dmp

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memory/2816-29-0x0000000005860000-0x0000000005870000-memory.dmp

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memory/2816-28-0x0000000005860000-0x0000000005870000-memory.dmp

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memory/4800-5-0x00000000057C0000-0x00000000057D0000-memory.dmp

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memory/4800-7-0x00000000057C0000-0x00000000057D0000-memory.dmp

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memory/4800-9-0x00000000099B0000-0x00000000099B6000-memory.dmp

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memory/4800-10-0x00000000057C0000-0x00000000057D0000-memory.dmp

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memory/4800-11-0x00000000057C0000-0x00000000057D0000-memory.dmp

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memory/4800-1-0x0000000005AE0000-0x0000000006084000-memory.dmp

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memory/4800-2-0x0000000005530000-0x00000000055C2000-memory.dmp

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memory/4800-8-0x0000000006DD0000-0x0000000006DE6000-memory.dmp

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memory/4800-6-0x0000000005620000-0x000000000562A000-memory.dmp

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memory/4800-0-0x0000000000B40000-0x0000000000C7C000-memory.dmp

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memory/4800-4-0x0000000003140000-0x0000000003180000-memory.dmp

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memory/4800-3-0x0000000005670000-0x000000000570C000-memory.dmp

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memory/6056-13-0x0000000000400000-0x0000000000477000-memory.dmp

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memory/6056-12-0x0000000000400000-0x0000000000477000-memory.dmp

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