remcos | d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9

General

Target

CompanyDetails.exe
Size

988KB
MD5

dc6296c1f5ec3b6e4dcbc33d0fcf3616
SHA1

64c81ccb99415efe3aaffcfeea93d15fc08b735b
SHA256

d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9
SHA512

e28695c316d1b5d2d35726ed3f68ebccc1d07083d3b533b90ac9a1cf697ebbee8794278625107f305e22b55c68a1a820a73103f208f6f6a0f40ecf24f4b5db98
SSDEEP

24576:72R1pA1DLK3qSmuyhBaNV8DDCANtsMFSzraULSgk:OPA1DLKagy4V8DftsgSzraR

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:59321

nnamoo.duckdns.org:59321

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-41EVS0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3044	powershell.exe
2900	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1992 set thread context of 2664	1992	CompanyDetails.exe	36

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CompanyDetails.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CompanyDetails.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2928	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1992	CompanyDetails.exe
1992	CompanyDetails.exe
3044	powershell.exe
2900	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	CompanyDetails.exe
Token: SeDebugPrivilege	3044	powershell.exe
Token: SeDebugPrivilege	2900	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 3044	1992	CompanyDetails.exe	30
PID 1992 wrote to memory of 3044	1992	CompanyDetails.exe	30
PID 1992 wrote to memory of 3044	1992	CompanyDetails.exe	30
PID 1992 wrote to memory of 3044	1992	CompanyDetails.exe	30
PID 1992 wrote to memory of 2900	1992	CompanyDetails.exe	32
PID 1992 wrote to memory of 2900	1992	CompanyDetails.exe	32
PID 1992 wrote to memory of 2900	1992	CompanyDetails.exe	32
PID 1992 wrote to memory of 2900	1992	CompanyDetails.exe	32
PID 1992 wrote to memory of 2928	1992	CompanyDetails.exe	34
PID 1992 wrote to memory of 2928	1992	CompanyDetails.exe	34
PID 1992 wrote to memory of 2928	1992	CompanyDetails.exe	34
PID 1992 wrote to memory of 2928	1992	CompanyDetails.exe	34
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36
PID 1992 wrote to memory of 2664	1992	CompanyDetails.exe	36

C:\Users\Admin\AppData\Local\Temp\CompanyDetails.exe
"C:\Users\Admin\AppData\Local\Temp\CompanyDetails.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\CompanyDetails.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3044
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YHWyXapflg.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2900
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YHWyXapflg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAAB1.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2928
- C:\Users\Admin\AppData\Local\Temp\CompanyDetails.exe
  "C:\Users\Admin\AppData\Local\Temp\CompanyDetails.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpAAB1.tmp

Filesize
1KB

MD5
3dfc233eb2f9770e7bcdcd8ffcc84e40

SHA1
9b3b7bc0496917c9bfdd347052390c5b09152908

SHA256
178f6f49ffbc3c263b19f753983fa5fac63c7b0587c0ba3474f469424c0d13d4

SHA512
f41c573eb71882f8220a6de9ee13521dd4550431b086aa5af56f1479deb4524655b0a94b2933f2563fd633b7035280bfde2e49f016e7c2f72a498519018781eb

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
3009ab1ee2e2f58ce59311f58ea0ef6e

SHA1
c410b4e5dfe9431a734409e271aa913b63b7d166

SHA256
51ff4b8bf1b430e9a1399a607964a39418b255040387bead047ab4a60cc9c10e

SHA512
b2ff6199f24ef756fdd0ed97a8555ccf7270c9e3bea2c8cc61e0aefa8508f1cae68708b7e3ceed7cca9030470732c43a84ecc7821a4ebb63ae8ce9a83bf95e2a

Download Submit
memory/1992-0-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/1992-1-0x00000000009C0000-0x0000000000ABC000-memory.dmp

Filesize
1008KB

Download
memory/1992-2-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/1992-3-0x0000000000380000-0x0000000000390000-memory.dmp

Filesize
64KB

Download
memory/1992-4-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/1992-5-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/1992-6-0x00000000054A0000-0x000000000555E000-memory.dmp

Filesize
760KB

Download
memory/1992-40-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/2664-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2664-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads