remcos | ccd9176d26caf90647653816162ea4622ae24e253b7da139fdfacd74a555a8a1

General

Target

PO-PDF_PDF.exe
Size

498KB
MD5

56f2689631039e478d381c489cd9ee01
SHA1

619b93e5742153b2c667b55b3c90d33fce0a795e
SHA256

ccd9176d26caf90647653816162ea4622ae24e253b7da139fdfacd74a555a8a1
SHA512

aaa9b20393a09c3699baf86cbd58f0e056dcd6257dc98196a9064a5339f2ef9d8e57f1e707fffd413be0cc86c603eca053f0ba7847ef280bba3bcc0db90158be

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

nkosarevaocs.duckdns.org:7266

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Executes dropped EXE 2 IoCs

Processes:

remcos.exeremcos.exe

pid process

1148 remcos.exe
1064 remcos.exe
Loads dropped DLL 2 IoCs

Processes:

cmd.exe

pid process

780 cmd.exe
780 cmd.exe

pid	process
1148	remcos.exe
1064	remcos.exe

pid	process
780	cmd.exe
780	cmd.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

PO-PDF_PDF.exeremcos.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\	PO-PDF_PDF.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	PO-PDF_PDF.exe
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	remcos.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

PO-PDF_PDF.exeremcos.exe

description	pid	process	target process
PID 644 set thread context of 2040	644	PO-PDF_PDF.exe	PO-PDF_PDF.exe
PID 1148 set thread context of 1064	1148	remcos.exe	remcos.exe

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1972 schtasks.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

PO-PDF_PDF.exeremcos.exe

pid process

644 PO-PDF_PDF.exe
1148 remcos.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

remcos.exe

pid process

1064 remcos.exe

pid	process
1972	schtasks.exe

pid	process
644	PO-PDF_PDF.exe
1148	remcos.exe

pid	process
1064	remcos.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

PO-PDF_PDF.execmd.exePO-PDF_PDF.exeWScript.execmd.exeremcos.exe

description	pid	process	target process
PID 644 wrote to memory of 2024	644	PO-PDF_PDF.exe	cmd.exe
PID 644 wrote to memory of 2024	644	PO-PDF_PDF.exe	cmd.exe
PID 644 wrote to memory of 2024	644	PO-PDF_PDF.exe	cmd.exe
PID 644 wrote to memory of 2024	644	PO-PDF_PDF.exe	cmd.exe
PID 644 wrote to memory of 2040	644	PO-PDF_PDF.exe	PO-PDF_PDF.exe
PID 644 wrote to memory of 2040	644	PO-PDF_PDF.exe	PO-PDF_PDF.exe
PID 644 wrote to memory of 2040	644	PO-PDF_PDF.exe	PO-PDF_PDF.exe
PID 644 wrote to memory of 2040	644	PO-PDF_PDF.exe	PO-PDF_PDF.exe
PID 644 wrote to memory of 2040	644	PO-PDF_PDF.exe	PO-PDF_PDF.exe
PID 2024 wrote to memory of 1972	2024	cmd.exe	schtasks.exe
PID 2024 wrote to memory of 1972	2024	cmd.exe	schtasks.exe
PID 2024 wrote to memory of 1972	2024	cmd.exe	schtasks.exe
PID 2024 wrote to memory of 1972	2024	cmd.exe	schtasks.exe
PID 2040 wrote to memory of 1896	2040	PO-PDF_PDF.exe	WScript.exe
PID 2040 wrote to memory of 1896	2040	PO-PDF_PDF.exe	WScript.exe
PID 2040 wrote to memory of 1896	2040	PO-PDF_PDF.exe	WScript.exe
PID 2040 wrote to memory of 1896	2040	PO-PDF_PDF.exe	WScript.exe
PID 1896 wrote to memory of 780	1896	WScript.exe	cmd.exe
PID 1896 wrote to memory of 780	1896	WScript.exe	cmd.exe
PID 1896 wrote to memory of 780	1896	WScript.exe	cmd.exe
PID 1896 wrote to memory of 780	1896	WScript.exe	cmd.exe
PID 780 wrote to memory of 1148	780	cmd.exe	remcos.exe
PID 780 wrote to memory of 1148	780	cmd.exe	remcos.exe
PID 780 wrote to memory of 1148	780	cmd.exe	remcos.exe
PID 780 wrote to memory of 1148	780	cmd.exe	remcos.exe
PID 1148 wrote to memory of 1064	1148	remcos.exe	remcos.exe
PID 1148 wrote to memory of 1064	1148	remcos.exe	remcos.exe
PID 1148 wrote to memory of 1064	1148	remcos.exe	remcos.exe
PID 1148 wrote to memory of 1064	1148	remcos.exe	remcos.exe
PID 1148 wrote to memory of 1064	1148	remcos.exe	remcos.exe

C:\Users\Admin\AppData\Local\Temp\PO-PDF_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\PO-PDF_PDF.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:644

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\81218996fd1c41f0995c36a56d2ab481.xml"
2⤵
- Suspicious use of WriteProcessMemory
PID:2024

C:\Windows\SysWOW64\schtasks.exe
schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\81218996fd1c41f0995c36a56d2ab481.xml"
3⤵
- Creates scheduled task(s)
PID:1972

C:\Users\Admin\AppData\Local\Temp\PO-PDF_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\PO-PDF_PDF.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2040

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:1896

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
4⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:780

C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1148

C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:1064

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\81218996fd1c41f0995c36a56d2ab481.xml
MD5
a035055e1c80bc652520df45650c690f

SHA1
37b8364ad46e17199eb5a7ee89bb506bba384adb

SHA256
2b9948d34674d0fc0f9cb290da8298441b56205f6e341e3cfa1954df42c2b655

SHA512
678279d1bfc8a71c27a5a2c3afa5fd266882a62610863a3e4ebc2489f17827ed4c680c89e6b8b52621320500294d2df9888259ccdc5d38def43e739c1f325fc1

Download Submit
C:\Users\Admin\AppData\Local\Temp\install.vbs
MD5
b92d64fe5b1d1f59df4b738262aea8df

SHA1
c8fb1981759c2d9bb2ec91b705985fba5fc7af63

SHA256
fa20e9aab03dc8e9f1910aaf0cf42662379fa16ae3a22642084fb97fa3d4f83a

SHA512
2566248b93c0cfb0414f033b8dd18bbd4f88180093eac2861107289bcb4ee160f9593706ff1f7d1f2e4ecea430d67a5a2897551a4f9ebd82b707243e300520e2

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
MD5
56f2689631039e478d381c489cd9ee01

SHA1
619b93e5742153b2c667b55b3c90d33fce0a795e

SHA256
ccd9176d26caf90647653816162ea4622ae24e253b7da139fdfacd74a555a8a1

SHA512
aaa9b20393a09c3699baf86cbd58f0e056dcd6257dc98196a9064a5339f2ef9d8e57f1e707fffd413be0cc86c603eca053f0ba7847ef280bba3bcc0db90158be

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
MD5
56f2689631039e478d381c489cd9ee01

SHA1
619b93e5742153b2c667b55b3c90d33fce0a795e

SHA256
ccd9176d26caf90647653816162ea4622ae24e253b7da139fdfacd74a555a8a1

SHA512
aaa9b20393a09c3699baf86cbd58f0e056dcd6257dc98196a9064a5339f2ef9d8e57f1e707fffd413be0cc86c603eca053f0ba7847ef280bba3bcc0db90158be

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
MD5
56f2689631039e478d381c489cd9ee01

SHA1
619b93e5742153b2c667b55b3c90d33fce0a795e

SHA256
ccd9176d26caf90647653816162ea4622ae24e253b7da139fdfacd74a555a8a1

SHA512
aaa9b20393a09c3699baf86cbd58f0e056dcd6257dc98196a9064a5339f2ef9d8e57f1e707fffd413be0cc86c603eca053f0ba7847ef280bba3bcc0db90158be

Download Submit
\Users\Admin\AppData\Roaming\Remcos\remcos.exe
MD5
56f2689631039e478d381c489cd9ee01

SHA1
619b93e5742153b2c667b55b3c90d33fce0a795e

SHA256
ccd9176d26caf90647653816162ea4622ae24e253b7da139fdfacd74a555a8a1

SHA512
aaa9b20393a09c3699baf86cbd58f0e056dcd6257dc98196a9064a5339f2ef9d8e57f1e707fffd413be0cc86c603eca053f0ba7847ef280bba3bcc0db90158be

Download Submit
\Users\Admin\AppData\Roaming\Remcos\remcos.exe
MD5
56f2689631039e478d381c489cd9ee01

SHA1
619b93e5742153b2c667b55b3c90d33fce0a795e

SHA256
ccd9176d26caf90647653816162ea4622ae24e253b7da139fdfacd74a555a8a1

SHA512
aaa9b20393a09c3699baf86cbd58f0e056dcd6257dc98196a9064a5339f2ef9d8e57f1e707fffd413be0cc86c603eca053f0ba7847ef280bba3bcc0db90158be

Download Submit
memory/644-2-0x00000000765E1000-0x00000000765E3000-memory.dmp

Filesize
8KB

Download
memory/780-12-0x0000000000000000-mapping.dmp

Download
memory/1064-23-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1064-20-0x0000000000413FA4-mapping.dmp

Download
memory/1148-17-0x0000000000000000-mapping.dmp

Download
memory/1896-13-0x00000000026C0000-0x00000000026C4000-memory.dmp

Filesize
16KB

Download
memory/1896-7-0x0000000000000000-mapping.dmp

Download
memory/1972-6-0x0000000000000000-mapping.dmp

Download
memory/2024-3-0x0000000000000000-mapping.dmp

Download
memory/2040-9-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2040-4-0x0000000000413FA4-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads