remcos | 6b52e8518788ffaa4883e8f310926bc7cdd9932ccffe1f31d54dbd10fc74a18e

General

Target

Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
Size

417KB
MD5

270c91e8e67e7466cc5c3ae37a90c4d5
SHA1

2c6b11dde610816886f4e5f0b64623b81a71ce0a
SHA256

c4282456cd93b45d7094b6b476079671781363ea67a9726a04704eee7391c627
SHA512

5ba608e7012516aa404c1708d4e071505aa6f7264b66f2b9995aecfc1af1f301275df6f31929536ea27b16746b01dad5970f642e65649a90e94cc357362d8234

Score

10^/10

remcos zonabancos1 persistence rat

Malware Config

Extracted

Family

remcos

Version

2.5.1 Pro

Botnet

ZonaBancos1

C2

recuperaciondecartera.website:6790

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
PXServiceNet.exe
copy_folder
System32
delete_file
false
hide_file
true
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
xlogs9.dat
keylog_flag
false
keylog_folder
Runtime5
keylog_path
%AppData%
mouse_option
false
mutex
remcos-WMUCYW
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
MServices
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Executes dropped EXE 3 IoCs

Processes:

PXServiceNet.exePXServiceNet.exePXServiceNet.exe

pid process

5028 PXServiceNet.exe
356 PXServiceNet.exe
204 PXServiceNet.exe

pid	process
5028	PXServiceNet.exe
356	PXServiceNet.exe
204	PXServiceNet.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exeWScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	WScript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exePXServiceNet.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows\CurrentVersion\Run\	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MServices = "\"C:\\Users\\Admin\\AppData\\Roaming\\System32\\PXServiceNet.exe\""	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows\CurrentVersion\Run\	PXServiceNet.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MServices = "\"C:\\Users\\Admin\\AppData\\Roaming\\System32\\PXServiceNet.exe\""	PXServiceNet.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exePXServiceNet.exe

description	pid	process	target process
PID 2480 set thread context of 4244	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
PID 5028 set thread context of 204	5028	PXServiceNet.exe	PXServiceNet.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000_Classes\Local Settings	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exePXServiceNet.exe

pid	process
2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
5028	PXServiceNet.exe
5028	PXServiceNet.exe
5028	PXServiceNet.exe
5028	PXServiceNet.exe
5028	PXServiceNet.exe
5028	PXServiceNet.exe
5028	PXServiceNet.exe
5028	PXServiceNet.exe
5028	PXServiceNet.exe
5028	PXServiceNet.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exePXServiceNet.exe

description	pid	process
Token: SeDebugPrivilege	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
Token: SeDebugPrivilege	5028	PXServiceNet.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

PXServiceNet.exe

pid process

204 PXServiceNet.exe

pid	process
204	PXServiceNet.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exeAdjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exeWScript.execmd.exePXServiceNet.exe

description	pid	process	target process
PID 2480 wrote to memory of 4244	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
PID 2480 wrote to memory of 4244	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
PID 2480 wrote to memory of 4244	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
PID 2480 wrote to memory of 4244	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
PID 2480 wrote to memory of 4244	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
PID 2480 wrote to memory of 4244	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
PID 2480 wrote to memory of 4244	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
PID 2480 wrote to memory of 4244	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
PID 2480 wrote to memory of 4244	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
PID 2480 wrote to memory of 4244	2480	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
PID 4244 wrote to memory of 3228	4244	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	WScript.exe
PID 4244 wrote to memory of 3228	4244	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	WScript.exe
PID 4244 wrote to memory of 3228	4244	Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe	WScript.exe
PID 3228 wrote to memory of 4752	3228	WScript.exe	cmd.exe
PID 3228 wrote to memory of 4752	3228	WScript.exe	cmd.exe
PID 3228 wrote to memory of 4752	3228	WScript.exe	cmd.exe
PID 4752 wrote to memory of 5028	4752	cmd.exe	PXServiceNet.exe
PID 4752 wrote to memory of 5028	4752	cmd.exe	PXServiceNet.exe
PID 4752 wrote to memory of 5028	4752	cmd.exe	PXServiceNet.exe
PID 5028 wrote to memory of 356	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 356	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 356	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 204	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 204	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 204	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 204	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 204	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 204	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 204	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 204	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 204	5028	PXServiceNet.exe	PXServiceNet.exe
PID 5028 wrote to memory of 204	5028	PXServiceNet.exe	PXServiceNet.exe

C:\Users\Admin\AppData\Local\Temp\Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2480

C:\Users\Admin\AppData\Local\Temp\Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Adjunto_Extracto_4523850339306068761894266441737657784_92344804604222287843581859556495_849221692036554261519_8167613218_pdf.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4244

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3228

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:4752

C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5028

C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
"C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe"
6⤵
- Executes dropped EXE
PID:356

C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
"C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe"
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:204

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs
Filesize
434B

MD5
d33aedaade0c88a1a0e2ab0df13b0664

SHA1
e044455e25cc9598045e24f79ddf7482f8f66765

SHA256
a7636b433c56dfb0e833c5354352e4f88bc01701eb81895c0cedc645eb2ae85c

SHA512
570f7d522896c053f96ad1d5c1da761468a66722cb2b09f914ae293312f69214b38b25767e90cfd36d5def0219c8b104757c08b56dc2a5b261e8d900344d8924

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
Filesize
417KB

MD5
270c91e8e67e7466cc5c3ae37a90c4d5

SHA1
2c6b11dde610816886f4e5f0b64623b81a71ce0a

SHA256
c4282456cd93b45d7094b6b476079671781363ea67a9726a04704eee7391c627

SHA512
5ba608e7012516aa404c1708d4e071505aa6f7264b66f2b9995aecfc1af1f301275df6f31929536ea27b16746b01dad5970f642e65649a90e94cc357362d8234

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
Filesize
417KB

MD5
270c91e8e67e7466cc5c3ae37a90c4d5

SHA1
2c6b11dde610816886f4e5f0b64623b81a71ce0a

SHA256
c4282456cd93b45d7094b6b476079671781363ea67a9726a04704eee7391c627

SHA512
5ba608e7012516aa404c1708d4e071505aa6f7264b66f2b9995aecfc1af1f301275df6f31929536ea27b16746b01dad5970f642e65649a90e94cc357362d8234

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
Filesize
417KB

MD5
270c91e8e67e7466cc5c3ae37a90c4d5

SHA1
2c6b11dde610816886f4e5f0b64623b81a71ce0a

SHA256
c4282456cd93b45d7094b6b476079671781363ea67a9726a04704eee7391c627

SHA512
5ba608e7012516aa404c1708d4e071505aa6f7264b66f2b9995aecfc1af1f301275df6f31929536ea27b16746b01dad5970f642e65649a90e94cc357362d8234

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
Filesize
417KB

MD5
270c91e8e67e7466cc5c3ae37a90c4d5

SHA1
2c6b11dde610816886f4e5f0b64623b81a71ce0a

SHA256
c4282456cd93b45d7094b6b476079671781363ea67a9726a04704eee7391c627

SHA512
5ba608e7012516aa404c1708d4e071505aa6f7264b66f2b9995aecfc1af1f301275df6f31929536ea27b16746b01dad5970f642e65649a90e94cc357362d8234

Download Submit
memory/204-153-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/204-152-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/204-148-0x0000000000000000-mapping.dmp

Download
memory/356-146-0x0000000000000000-mapping.dmp

Download
memory/2480-130-0x0000000000B10000-0x0000000000B7E000-memory.dmp

Filesize
440KB

Download
memory/2480-134-0x00000000057D0000-0x000000000586C000-memory.dmp

Filesize
624KB

Download
memory/2480-133-0x0000000005440000-0x000000000544A000-memory.dmp

Filesize
40KB

Download
memory/2480-132-0x00000000054B0000-0x0000000005542000-memory.dmp

Filesize
584KB

Download
memory/2480-131-0x0000000005A60000-0x0000000006004000-memory.dmp

Filesize
5.6MB

Download
memory/3228-139-0x0000000000000000-mapping.dmp

Download
memory/4244-140-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4244-138-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4244-136-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4244-135-0x0000000000000000-mapping.dmp

Download
memory/4752-142-0x0000000000000000-mapping.dmp

Download
memory/5028-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads