remcos | 321be1554d0c8aaf169078b16f29bac61f923485fcc124499a6886c4ecadb552

General

Target

Quotation Request.exe
Size

498KB
MD5

e14fc3accfaa18fee9a5c60689768864
SHA1

f77f4c23d6987fc4a9edbf47eb4219d591f314c9
SHA256

321be1554d0c8aaf169078b16f29bac61f923485fcc124499a6886c4ecadb552
SHA512

b62ae51e70417deaba0f0b88acccff8f3168559a84585f7cd93d997e57364c39d25079a3f521ae9203a172682a94d095721b12d840d5428711bba15e175316c7

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

chhjvhvkjbhliiuyuj.duckdns.org:20909

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Executes dropped EXE 4 IoCs

Processes:

remcos.exeremcos.exeremcos.exeremcos.exe

pid process

3492 remcos.exe
4052 remcos.exe
4076 remcos.exe
2056 remcos.exe

pid	process
3492	remcos.exe
4052	remcos.exe
4076	remcos.exe
2056	remcos.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Quotation Request.exeremcos.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	Quotation Request.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	remcos.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\	Quotation Request.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Quotation Request.exeremcos.exe

description	pid	process	target process
PID 4692 set thread context of 3660	4692	Quotation Request.exe	Quotation Request.exe
PID 4076 set thread context of 2056	4076	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

748 schtasks.exe
Modifies registry class 1 IoCs

Processes:

Quotation Request.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings Quotation Request.exe
Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

Quotation Request.exeremcos.exeremcos.exe

pid process

4692 Quotation Request.exe
3492 remcos.exe
4076 remcos.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

remcos.exe

pid process

2056 remcos.exe

pid	process
748	schtasks.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings	Quotation Request.exe

pid	process
4692	Quotation Request.exe
3492	remcos.exe
4076	remcos.exe

pid	process
2056	remcos.exe

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

Quotation Request.execmd.exeQuotation Request.exeWScript.execmd.exeremcos.exeremcos.exe

description	pid	process	target process
PID 4692 wrote to memory of 3600	4692	Quotation Request.exe	cmd.exe
PID 4692 wrote to memory of 3600	4692	Quotation Request.exe	cmd.exe
PID 4692 wrote to memory of 3600	4692	Quotation Request.exe	cmd.exe
PID 4692 wrote to memory of 3660	4692	Quotation Request.exe	Quotation Request.exe
PID 4692 wrote to memory of 3660	4692	Quotation Request.exe	Quotation Request.exe
PID 4692 wrote to memory of 3660	4692	Quotation Request.exe	Quotation Request.exe
PID 4692 wrote to memory of 3660	4692	Quotation Request.exe	Quotation Request.exe
PID 3600 wrote to memory of 748	3600	cmd.exe	schtasks.exe
PID 3600 wrote to memory of 748	3600	cmd.exe	schtasks.exe
PID 3600 wrote to memory of 748	3600	cmd.exe	schtasks.exe
PID 3660 wrote to memory of 4184	3660	Quotation Request.exe	WScript.exe
PID 3660 wrote to memory of 4184	3660	Quotation Request.exe	WScript.exe
PID 3660 wrote to memory of 4184	3660	Quotation Request.exe	WScript.exe
PID 4184 wrote to memory of 3220	4184	WScript.exe	cmd.exe
PID 4184 wrote to memory of 3220	4184	WScript.exe	cmd.exe
PID 4184 wrote to memory of 3220	4184	WScript.exe	cmd.exe
PID 3220 wrote to memory of 3492	3220	cmd.exe	remcos.exe
PID 3220 wrote to memory of 3492	3220	cmd.exe	remcos.exe
PID 3220 wrote to memory of 3492	3220	cmd.exe	remcos.exe
PID 3492 wrote to memory of 4052	3492	remcos.exe	remcos.exe
PID 3492 wrote to memory of 4052	3492	remcos.exe	remcos.exe
PID 3492 wrote to memory of 4052	3492	remcos.exe	remcos.exe
PID 3492 wrote to memory of 4076	3492	remcos.exe	remcos.exe
PID 3492 wrote to memory of 4076	3492	remcos.exe	remcos.exe
PID 3492 wrote to memory of 4076	3492	remcos.exe	remcos.exe
PID 4076 wrote to memory of 2056	4076	remcos.exe	remcos.exe
PID 4076 wrote to memory of 2056	4076	remcos.exe	remcos.exe
PID 4076 wrote to memory of 2056	4076	remcos.exe	remcos.exe
PID 4076 wrote to memory of 2056	4076	remcos.exe	remcos.exe

C:\Users\Admin\AppData\Local\Temp\Quotation Request.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation Request.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4692

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\c21b36ce778f4ca1b76d04fcd74cc727.xml"
2⤵
- Suspicious use of WriteProcessMemory
PID:3600

C:\Windows\SysWOW64\schtasks.exe
schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\c21b36ce778f4ca1b76d04fcd74cc727.xml"
3⤵
- Creates scheduled task(s)
PID:748

C:\Users\Admin\AppData\Local\Temp\Quotation Request.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation Request.exe"
2⤵
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3660

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:4184

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:3220

C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
5⤵
- Executes dropped EXE
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3492

C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
6⤵
- Executes dropped EXE
PID:4052

C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
"C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
6⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4076

C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
"C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
7⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:2056

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\c21b36ce778f4ca1b76d04fcd74cc727.xml
MD5
aa2f6636e997aaa0b01fbc78b1dabe52

SHA1
fd462100fc91975dcbea8e361cf1eb8a70f6ad54

SHA256
d710b6eda22285684579d8b547e5be2f48883c4bf8db39993b00df30f9dc8723

SHA512
6540a3bbdbd3ab51679d5b32380e6c288bf6eba2777d067d40bfe65642ccafecd18028b102dfa46ac189d84282da2b6cb202a4f307587c5639f86834788f5104

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
e14fc3accfaa18fee9a5c60689768864

SHA1
f77f4c23d6987fc4a9edbf47eb4219d591f314c9

SHA256
321be1554d0c8aaf169078b16f29bac61f923485fcc124499a6886c4ecadb552

SHA512
b62ae51e70417deaba0f0b88acccff8f3168559a84585f7cd93d997e57364c39d25079a3f521ae9203a172682a94d095721b12d840d5428711bba15e175316c7

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
MD5
e14fc3accfaa18fee9a5c60689768864

SHA1
f77f4c23d6987fc4a9edbf47eb4219d591f314c9

SHA256
321be1554d0c8aaf169078b16f29bac61f923485fcc124499a6886c4ecadb552

SHA512
b62ae51e70417deaba0f0b88acccff8f3168559a84585f7cd93d997e57364c39d25079a3f521ae9203a172682a94d095721b12d840d5428711bba15e175316c7

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
MD5
e14fc3accfaa18fee9a5c60689768864

SHA1
f77f4c23d6987fc4a9edbf47eb4219d591f314c9

SHA256
321be1554d0c8aaf169078b16f29bac61f923485fcc124499a6886c4ecadb552

SHA512
b62ae51e70417deaba0f0b88acccff8f3168559a84585f7cd93d997e57364c39d25079a3f521ae9203a172682a94d095721b12d840d5428711bba15e175316c7

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
MD5
e14fc3accfaa18fee9a5c60689768864

SHA1
f77f4c23d6987fc4a9edbf47eb4219d591f314c9

SHA256
321be1554d0c8aaf169078b16f29bac61f923485fcc124499a6886c4ecadb552

SHA512
b62ae51e70417deaba0f0b88acccff8f3168559a84585f7cd93d997e57364c39d25079a3f521ae9203a172682a94d095721b12d840d5428711bba15e175316c7

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
MD5
e14fc3accfaa18fee9a5c60689768864

SHA1
f77f4c23d6987fc4a9edbf47eb4219d591f314c9

SHA256
321be1554d0c8aaf169078b16f29bac61f923485fcc124499a6886c4ecadb552

SHA512
b62ae51e70417deaba0f0b88acccff8f3168559a84585f7cd93d997e57364c39d25079a3f521ae9203a172682a94d095721b12d840d5428711bba15e175316c7

Download Submit
memory/748-4-0x0000000000000000-mapping.dmp

Download
memory/2056-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2056-16-0x0000000000413FA4-mapping.dmp

Download
memory/3220-9-0x0000000000000000-mapping.dmp

Download
memory/3492-10-0x0000000000000000-mapping.dmp

Download
memory/3600-2-0x0000000000000000-mapping.dmp

Download
memory/3660-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3660-3-0x0000000000413FA4-mapping.dmp

Download
memory/4076-14-0x0000000000000000-mapping.dmp

Download
memory/4184-5-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads