remcos | fd615fdf86a726bb8ad810209e149deee8b4d1df51a03d6e895442b903d18136

General

Target

REF 2206E43460.scr
Size

929KB
MD5

bff820244b82a7621c4cacce8180e4ce
SHA1

59b3926046276a70e7914f636643d8f8dbd7bdd7
SHA256

606865b5ac36472607a3869745888546335913565f1392ebfbc1d0486692fc98
SHA512

5ec5b0835668893a33442a86ee61e59b3b5b882d10f1b791caaa85d5fbf072e78a22ed0f4110728bb365c49983997130027f714fb1258c5d7ee2fa7359d260e6
SSDEEP

12288:nqvc55OHTDPDgjHnYkFvsxL/6RugXx72vusEj1uD7qzANQ3HzG2S4kv50WPvB26J:ScXOPD0H3Ei/om/qLT0WP803II

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
3060	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2380 set thread context of 2912	2380	REF 2206E43460.scr	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 2206E43460.scr
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 2206E43460.scr

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
2212	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3060	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3060	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 3060	2380	REF 2206E43460.scr	31
PID 2380 wrote to memory of 3060	2380	REF 2206E43460.scr	31
PID 2380 wrote to memory of 3060	2380	REF 2206E43460.scr	31
PID 2380 wrote to memory of 3060	2380	REF 2206E43460.scr	31
PID 2380 wrote to memory of 2212	2380	REF 2206E43460.scr	33
PID 2380 wrote to memory of 2212	2380	REF 2206E43460.scr	33
PID 2380 wrote to memory of 2212	2380	REF 2206E43460.scr	33
PID 2380 wrote to memory of 2212	2380	REF 2206E43460.scr	33
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35
PID 2380 wrote to memory of 2912	2380	REF 2206E43460.scr	35

C:\Users\Admin\AppData\Local\Temp\REF 2206E43460.scr
"C:\Users\Admin\AppData\Local\Temp\REF 2206E43460.scr" /S
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\JNsZiLEJR.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3060
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JNsZiLEJR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp399.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2212
- C:\Users\Admin\AppData\Local\Temp\REF 2206E43460.scr
  "C:\Users\Admin\AppData\Local\Temp\REF 2206E43460.scr"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2912

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\tmp399.tmp

Filesize
1KB

MD5
498f85d638e8b29f087acc7277444718

SHA1
1d6d17e1403620951b3912c06b5ec40fad1a9130

SHA256
987d18127326ae819d2c6025cd5d6e4a083711534c688bbbad4ba118ce92e4f1

SHA512
ae75de5a248da3758fa8286c0aef0105a049ce29ae42c28c89c97a78c59b6c70d9dee9c9d4e3a2936343fbb22f7d7348d23923971faf715729b0171e7419169a

Download Submit
memory/2380-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/2380-1-0x0000000000F50000-0x000000000103E000-memory.dmp

Filesize
952KB

Download
memory/2380-2-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2380-3-0x00000000004E0000-0x00000000004F8000-memory.dmp

Filesize
96KB

Download
memory/2380-4-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/2380-5-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2380-6-0x0000000005AE0000-0x0000000005BA0000-memory.dmp

Filesize
768KB

Download
memory/2380-34-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2912-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2912-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2912-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads