remcos | 0b2b9a03881b2a49d79df2c6a19d12cf076a031080698b8c4bce87bb8252b277

General

Target

Ref#60031796.exe
Size

977KB
MD5

6525d1510016959c65676fca54680b6e
SHA1

d4a544d1fc0690a2309fe0223bd31529e44a7355
SHA256

0b2b9a03881b2a49d79df2c6a19d12cf076a031080698b8c4bce87bb8252b277
SHA512

b57c0aaba41a992c08af93a8c1e0cd05f9553cb86945fcafce80553b5fdd754de50d25a9bee516d5eeb5bf3b2583eb1013787f8d10a4a1c0bcd891638116ea81
SSDEEP

24576:1dhlcW4SeNmOKIc8dJ8UiAtXLN1ovIqPc5/aGvseec:BCW4SGKIc0J8Uig3owC8/R

Score

10^/10

remcos hdyebf discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

hdyebf

C2

decmainserver.webredirect.org:45682

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
46875-RPQWNM
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
Remcos family
remcos

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2864	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3008 set thread context of 2308	3008	Ref#60031796.exe	35

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 4 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	Ref#60031796.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	Ref#60031796.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
584	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2864	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2864	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 2864	3008	Ref#60031796.exe	31
PID 3008 wrote to memory of 2864	3008	Ref#60031796.exe	31
PID 3008 wrote to memory of 2864	3008	Ref#60031796.exe	31
PID 3008 wrote to memory of 2864	3008	Ref#60031796.exe	31
PID 3008 wrote to memory of 584	3008	Ref#60031796.exe	33
PID 3008 wrote to memory of 584	3008	Ref#60031796.exe	33
PID 3008 wrote to memory of 584	3008	Ref#60031796.exe	33
PID 3008 wrote to memory of 584	3008	Ref#60031796.exe	33
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35
PID 3008 wrote to memory of 2308	3008	Ref#60031796.exe	35

C:\Users\Admin\AppData\Local\Temp\Ref#60031796.exe
"C:\Users\Admin\AppData\Local\Temp\Ref#60031796.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\exrkAaatqQX.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2864
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\exrkAaatqQX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp10F2.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:584
- C:\Users\Admin\AppData\Local\Temp\Ref#60031796.exe
  "C:\Users\Admin\AppData\Local\Temp\Ref#60031796.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2308

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp10F2.tmp

Filesize
1KB

MD5
3f81cb6b95ff2444b5dbda3602088819

SHA1
73f528d8c05b4f061eb690b9fbc6375a7e1d08b6

SHA256
ab1051d293319efe177de17a19ba84d3af7d8f14a059bf8a12e01d0992b62bcd

SHA512
090b7d47c6513620396fbd2e7b689ef21b933b809805a9bec42831b92c1a4d86d77aef3848a3f0ac77b02b059cb4aa1cfa79fedc7f51e7700db6676a6f4b8197

Download Submit
memory/2308-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2308-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-35-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/3008-1-0x0000000001080000-0x000000000117A000-memory.dmp

Filesize
1000KB

Download
memory/3008-5-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/3008-0-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/3008-2-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/3008-10-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/3008-6-0x0000000005D50000-0x0000000005E10000-memory.dmp

Filesize
768KB

Download
memory/3008-4-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/3008-3-0x0000000000A20000-0x0000000000A3E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads