remcos | f9885b704de7e7af77423e2130f749661abf41d109c774ff5a47db0cfd07c3d4

General

Target

Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
Size

476KB
MD5

4b665d364bee62dc7c1f74e93b0d660b
SHA1

c22cb71c3c0ea98edaeaec8077988abc51296fcb
SHA256

417022af236bc97978cd14c5ffb8e5ced3392987a8b73ae3a5f1906367419abd
SHA512

e8e025fed9f4a633d65b9a4b8f9f23984e76ff35fcd73020d3e5f7f9df514c9c1c6161796569668a715a44d765c14effc51b8732a32e1b853c72a9f6b9c9d2b8

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

1700 PXServiceNet.exe
4468 PXServiceNet.exe
1372 PXServiceNet.exe

pid	process
1700	PXServiceNet.exe
4468	PXServiceNet.exe
1372	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:

Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exeWScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\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:

Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exePXServiceNet.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows\CurrentVersion\Run\	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MServices = "\"C:\\Users\\Admin\\AppData\\Roaming\\System32\\PXServiceNet.exe\""	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows\CurrentVersion\Run\	PXServiceNet.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MServices = "\"C:\\Users\\Admin\\AppData\\Roaming\\System32\\PXServiceNet.exe\""	PXServiceNet.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exePXServiceNet.exe

description	pid	process	target process
PID 1684 set thread context of 5000	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
PID 1700 set thread context of 1372	1700	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:

Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000_Classes\Local Settings	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exePXServiceNet.exe

pid	process
1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
1700	PXServiceNet.exe
1700	PXServiceNet.exe
1700	PXServiceNet.exe
1700	PXServiceNet.exe
1700	PXServiceNet.exe
1700	PXServiceNet.exe
1700	PXServiceNet.exe
1700	PXServiceNet.exe
1700	PXServiceNet.exe
1700	PXServiceNet.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exePXServiceNet.exe

description	pid	process
Token: SeDebugPrivilege	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
Token: SeDebugPrivilege	1700	PXServiceNet.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

PXServiceNet.exe

pid process

1372 PXServiceNet.exe

pid	process
1372	PXServiceNet.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exeCobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exeWScript.execmd.exePXServiceNet.exe

description	pid	process	target process
PID 1684 wrote to memory of 5000	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
PID 1684 wrote to memory of 5000	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
PID 1684 wrote to memory of 5000	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
PID 1684 wrote to memory of 5000	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
PID 1684 wrote to memory of 5000	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
PID 1684 wrote to memory of 5000	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
PID 1684 wrote to memory of 5000	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
PID 1684 wrote to memory of 5000	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
PID 1684 wrote to memory of 5000	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
PID 1684 wrote to memory of 5000	1684	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
PID 5000 wrote to memory of 4892	5000	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	WScript.exe
PID 5000 wrote to memory of 4892	5000	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	WScript.exe
PID 5000 wrote to memory of 4892	5000	Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe	WScript.exe
PID 4892 wrote to memory of 2164	4892	WScript.exe	cmd.exe
PID 4892 wrote to memory of 2164	4892	WScript.exe	cmd.exe
PID 4892 wrote to memory of 2164	4892	WScript.exe	cmd.exe
PID 2164 wrote to memory of 1700	2164	cmd.exe	PXServiceNet.exe
PID 2164 wrote to memory of 1700	2164	cmd.exe	PXServiceNet.exe
PID 2164 wrote to memory of 1700	2164	cmd.exe	PXServiceNet.exe
PID 1700 wrote to memory of 4468	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 4468	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 4468	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 1372	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 1372	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 1372	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 1372	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 1372	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 1372	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 1372	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 1372	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 1372	1700	PXServiceNet.exe	PXServiceNet.exe
PID 1700 wrote to memory of 1372	1700	PXServiceNet.exe	PXServiceNet.exe

C:\Users\Admin\AppData\Local\Temp\Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1684

C:\Users\Admin\AppData\Local\Temp\Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Cobro Juridico_02734551495093835_5034123_466184020757220845_830988_48109555117189306190_39876829_70731030598_pdf.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5000

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:4892

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:2164

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:1700

C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
"C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe"
6⤵
- Executes dropped EXE
PID:4468

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:1372

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

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
476KB

MD5
4b665d364bee62dc7c1f74e93b0d660b

SHA1
c22cb71c3c0ea98edaeaec8077988abc51296fcb

SHA256
417022af236bc97978cd14c5ffb8e5ced3392987a8b73ae3a5f1906367419abd

SHA512
e8e025fed9f4a633d65b9a4b8f9f23984e76ff35fcd73020d3e5f7f9df514c9c1c6161796569668a715a44d765c14effc51b8732a32e1b853c72a9f6b9c9d2b8

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
Filesize
476KB

MD5
4b665d364bee62dc7c1f74e93b0d660b

SHA1
c22cb71c3c0ea98edaeaec8077988abc51296fcb

SHA256
417022af236bc97978cd14c5ffb8e5ced3392987a8b73ae3a5f1906367419abd

SHA512
e8e025fed9f4a633d65b9a4b8f9f23984e76ff35fcd73020d3e5f7f9df514c9c1c6161796569668a715a44d765c14effc51b8732a32e1b853c72a9f6b9c9d2b8

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
Filesize
476KB

MD5
4b665d364bee62dc7c1f74e93b0d660b

SHA1
c22cb71c3c0ea98edaeaec8077988abc51296fcb

SHA256
417022af236bc97978cd14c5ffb8e5ced3392987a8b73ae3a5f1906367419abd

SHA512
e8e025fed9f4a633d65b9a4b8f9f23984e76ff35fcd73020d3e5f7f9df514c9c1c6161796569668a715a44d765c14effc51b8732a32e1b853c72a9f6b9c9d2b8

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PXServiceNet.exe
Filesize
476KB

MD5
4b665d364bee62dc7c1f74e93b0d660b

SHA1
c22cb71c3c0ea98edaeaec8077988abc51296fcb

SHA256
417022af236bc97978cd14c5ffb8e5ced3392987a8b73ae3a5f1906367419abd

SHA512
e8e025fed9f4a633d65b9a4b8f9f23984e76ff35fcd73020d3e5f7f9df514c9c1c6161796569668a715a44d765c14effc51b8732a32e1b853c72a9f6b9c9d2b8

Download Submit
memory/1372-152-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1372-153-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1372-148-0x0000000000000000-mapping.dmp

Download
memory/1684-130-0x0000000000D90000-0x0000000000E0E000-memory.dmp

Filesize
504KB

Download
memory/1684-134-0x0000000006320000-0x00000000063BC000-memory.dmp

Filesize
624KB

Download
memory/1684-133-0x0000000005840000-0x000000000584A000-memory.dmp

Filesize
40KB

Download
memory/1684-132-0x0000000005860000-0x00000000058F2000-memory.dmp

Filesize
584KB

Download
memory/1684-131-0x0000000005D70000-0x0000000006314000-memory.dmp

Filesize
5.6MB

Download
memory/1700-143-0x0000000000000000-mapping.dmp

Download
memory/2164-142-0x0000000000000000-mapping.dmp

Download
memory/4468-146-0x0000000000000000-mapping.dmp

Download
memory/4892-139-0x0000000000000000-mapping.dmp

Download
memory/5000-140-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/5000-138-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/5000-136-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/5000-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads