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 2 IoCs

Processes:

remcos.exeremcos.exe

pid process

1160 remcos.exe
1096 remcos.exe
Loads dropped DLL 2 IoCs

Processes:

cmd.exe

pid process

324 cmd.exe
324 cmd.exe

pid	process
1160	remcos.exe
1096	remcos.exe

pid	process
324	cmd.exe
324	cmd.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
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\	Quotation Request.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	Quotation Request.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	remcos.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Quotation Request.exeremcos.exe

description	pid	process	target process
PID 1884 set thread context of 1208	1884	Quotation Request.exe	Quotation Request.exe
PID 1160 set thread context of 1096	1160	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

1860 schtasks.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

Quotation Request.exeremcos.exe

pid process

1884 Quotation Request.exe
1160 remcos.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

remcos.exe

pid process

1096 remcos.exe

pid	process
1860	schtasks.exe

pid	process
1884	Quotation Request.exe
1160	remcos.exe

pid	process
1096	remcos.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

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

description	pid	process	target process
PID 1884 wrote to memory of 1996	1884	Quotation Request.exe	cmd.exe
PID 1884 wrote to memory of 1996	1884	Quotation Request.exe	cmd.exe
PID 1884 wrote to memory of 1996	1884	Quotation Request.exe	cmd.exe
PID 1884 wrote to memory of 1996	1884	Quotation Request.exe	cmd.exe
PID 1884 wrote to memory of 1208	1884	Quotation Request.exe	Quotation Request.exe
PID 1884 wrote to memory of 1208	1884	Quotation Request.exe	Quotation Request.exe
PID 1884 wrote to memory of 1208	1884	Quotation Request.exe	Quotation Request.exe
PID 1884 wrote to memory of 1208	1884	Quotation Request.exe	Quotation Request.exe
PID 1884 wrote to memory of 1208	1884	Quotation Request.exe	Quotation Request.exe
PID 1996 wrote to memory of 1860	1996	cmd.exe	schtasks.exe
PID 1996 wrote to memory of 1860	1996	cmd.exe	schtasks.exe
PID 1996 wrote to memory of 1860	1996	cmd.exe	schtasks.exe
PID 1996 wrote to memory of 1860	1996	cmd.exe	schtasks.exe
PID 1208 wrote to memory of 1844	1208	Quotation Request.exe	WScript.exe
PID 1208 wrote to memory of 1844	1208	Quotation Request.exe	WScript.exe
PID 1208 wrote to memory of 1844	1208	Quotation Request.exe	WScript.exe
PID 1208 wrote to memory of 1844	1208	Quotation Request.exe	WScript.exe
PID 1844 wrote to memory of 324	1844	WScript.exe	cmd.exe
PID 1844 wrote to memory of 324	1844	WScript.exe	cmd.exe
PID 1844 wrote to memory of 324	1844	WScript.exe	cmd.exe
PID 1844 wrote to memory of 324	1844	WScript.exe	cmd.exe
PID 324 wrote to memory of 1160	324	cmd.exe	remcos.exe
PID 324 wrote to memory of 1160	324	cmd.exe	remcos.exe
PID 324 wrote to memory of 1160	324	cmd.exe	remcos.exe
PID 324 wrote to memory of 1160	324	cmd.exe	remcos.exe
PID 1160 wrote to memory of 1096	1160	remcos.exe	remcos.exe
PID 1160 wrote to memory of 1096	1160	remcos.exe	remcos.exe
PID 1160 wrote to memory of 1096	1160	remcos.exe	remcos.exe
PID 1160 wrote to memory of 1096	1160	remcos.exe	remcos.exe
PID 1160 wrote to memory of 1096	1160	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:1884

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:1996

C:\Windows\SysWOW64\schtasks.exe
schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\c21b36ce778f4ca1b76d04fcd74cc727.xml"
3⤵
- Creates scheduled task(s)
PID:1860

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
- Suspicious use of WriteProcessMemory
PID:1208

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:1844

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:324

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:1160

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:1096

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
9313352a59e3b368ab4eb8173567c406

SHA1
fc776c28e3ae9bd5e68f25c2a4f6248126731370

SHA256
469d4994320f37196faca4de8ada85161a43dd42c9405b283bea5e4ea84c9a8d

SHA512
000f6edf387b4ea0f244003fad3f66be5eb1920012838ba3a19c3f2dcde973fce8450c8e556c22cc20f7a3a0980d735fb169ecfafd440993c9fe5b8875fc7462

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
\Users\Admin\AppData\Roaming\Remcos\remcos.exe
MD5
e14fc3accfaa18fee9a5c60689768864

SHA1
f77f4c23d6987fc4a9edbf47eb4219d591f314c9

SHA256
321be1554d0c8aaf169078b16f29bac61f923485fcc124499a6886c4ecadb552

SHA512
b62ae51e70417deaba0f0b88acccff8f3168559a84585f7cd93d997e57364c39d25079a3f521ae9203a172682a94d095721b12d840d5428711bba15e175316c7

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

SHA1
f77f4c23d6987fc4a9edbf47eb4219d591f314c9

SHA256
321be1554d0c8aaf169078b16f29bac61f923485fcc124499a6886c4ecadb552

SHA512
b62ae51e70417deaba0f0b88acccff8f3168559a84585f7cd93d997e57364c39d25079a3f521ae9203a172682a94d095721b12d840d5428711bba15e175316c7

Download Submit
memory/324-12-0x0000000000000000-mapping.dmp

Download
memory/1096-19-0x0000000000413FA4-mapping.dmp

Download
memory/1096-22-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1160-16-0x0000000000000000-mapping.dmp

Download
memory/1208-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1208-4-0x0000000000413FA4-mapping.dmp

Download
memory/1844-9-0x0000000000000000-mapping.dmp

Download
memory/1860-5-0x0000000000000000-mapping.dmp

Download
memory/1884-2-0x0000000074D11000-0x0000000074D13000-memory.dmp

Filesize
8KB

Download
memory/1996-3-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads