remcos | cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b

General

Target

cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
Size

987KB
MD5

1058789883ec68a66fc099d6cc6fefb9
SHA1

9137b35e3480c2f9fc873e351851d421d8d195d9
SHA256

cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b
SHA512

54c024fe605a2ac68d5662e20bbb2c8695b8a13dac14e9d9571f001d2f949ffde0fb0a5152e03122336b58390d6e644d35a685a20c7d2f26a6bbcbb50106a4c7
SSDEEP

24576:ovpBEkDWCvU7Ep0EWh04DMRukIFAb4E6T:ovIkDpvU7vtrgI/FAbh6T

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

2.58.56.182:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-GM05WY
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2240	powershell.exe
2872	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2076 set thread context of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37

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	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
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	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.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
2876	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
2872	powershell.exe
2240	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
Token: SeDebugPrivilege	2872	powershell.exe
Token: SeDebugPrivilege	2240	powershell.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2240	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	31
PID 2076 wrote to memory of 2240	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	31
PID 2076 wrote to memory of 2240	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	31
PID 2076 wrote to memory of 2240	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	31
PID 2076 wrote to memory of 2872	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	33
PID 2076 wrote to memory of 2872	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	33
PID 2076 wrote to memory of 2872	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	33
PID 2076 wrote to memory of 2872	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	33
PID 2076 wrote to memory of 2876	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	34
PID 2076 wrote to memory of 2876	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	34
PID 2076 wrote to memory of 2876	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	34
PID 2076 wrote to memory of 2876	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	34
PID 2076 wrote to memory of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37
PID 2076 wrote to memory of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37
PID 2076 wrote to memory of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37
PID 2076 wrote to memory of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37
PID 2076 wrote to memory of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37
PID 2076 wrote to memory of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37
PID 2076 wrote to memory of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37
PID 2076 wrote to memory of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37
PID 2076 wrote to memory of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37
PID 2076 wrote to memory of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37
PID 2076 wrote to memory of 2036	2076	cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe	37

C:\Users\Admin\AppData\Local\Temp\cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
"C:\Users\Admin\AppData\Local\Temp\cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2076
- 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\cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2240
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xPfbiDW.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2872
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xPfbiDW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp28B6.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2876
- C:\Users\Admin\AppData\Local\Temp\cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe
  "C:\Users\Admin\AppData\Local\Temp\cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2036

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\tmp28B6.tmp

Filesize
1KB

MD5
fb18d2f1be64c750a0b20490e9f7a7fb

SHA1
c66b86c64c248b5015bb94d8832897053b7e9e81

SHA256
cff950e4178c779c673731016f095fbcccb220b3ed65896c94b71412950756b6

SHA512
2c27ff72ad55a85638cdbee3f227d21b1b2b538f1464fa6f8b990a7df6d847e66f631d86f905cdb84a2952f1ba857231b776b6fd216c99ba3565991184c3f382

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

Filesize
7KB

MD5
b0720255bbb8004c211178f6eaa4f287

SHA1
a149edf30487db46b5d515044e6416cb09463aef

SHA256
975e52541b30675f9f8a12fd114df1180a9a4a1b9d501d138436adf3bd1988bc

SHA512
97fae421c164cf12aacd9114f046d91c2db294a49f9d012b460665e9ef4bd08bbe9a2435a602c3e71939b664b122bae5bbbba7167ed82f2ff993901f6f507be8

Download Submit
memory/2036-32-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-40-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-29-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-46-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-27-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-45-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-44-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-19-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-34-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-25-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-43-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2036-42-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-41-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-21-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-23-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-37-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2036-38-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2076-36-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/2076-3-0x00000000007E0000-0x00000000007FE000-memory.dmp

Filesize
120KB

Download
memory/2076-6-0x0000000005C60000-0x0000000005D24000-memory.dmp

Filesize
784KB

Download
memory/2076-4-0x0000000073FAE000-0x0000000073FAF000-memory.dmp

Filesize
4KB

Download
memory/2076-0-0x0000000073FAE000-0x0000000073FAF000-memory.dmp

Filesize
4KB

Download
memory/2076-1-0x0000000001310000-0x000000000140E000-memory.dmp

Filesize
1016KB

Download
memory/2076-2-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/2076-5-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads