remcos | 8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
12/11/2024, 17:39

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General

Target

8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
Size

1.0MB
MD5

b1da0bd777067ca89b28fc4adc81a483
SHA1

47af480b6704e2c61ae2e24060fbe86d3971c176
SHA256

8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8
SHA512

68ef2a70ba4f74f69d7bf47d76c92dbcf70261bc64b1569561662afaa90ca5d4119c97e7589cb0d857ad986d2ef3ff334ed02d230a529f79a5c9c8d9e761689f
SSDEEP

24576:Mg/fQ/hv309BvUDV2xogQA3O0jO0biPeX+Y5PTwCPiqLa:zAF303vUDESA+0jO0BOY58C5La

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

www.caampass.com:5577

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-RPV3M2
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
2912	powershell.exe
2816	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1724 set thread context of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40

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	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.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	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.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
2744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
2912	powershell.exe
2816	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
Token: SeDebugPrivilege	2912	powershell.exe
Token: SeDebugPrivilege	2816	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1732	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 2912	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	31
PID 1724 wrote to memory of 2912	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	31
PID 1724 wrote to memory of 2912	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	31
PID 1724 wrote to memory of 2912	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	31
PID 1724 wrote to memory of 2816	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	33
PID 1724 wrote to memory of 2816	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	33
PID 1724 wrote to memory of 2816	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	33
PID 1724 wrote to memory of 2816	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	33
PID 1724 wrote to memory of 2744	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	34
PID 1724 wrote to memory of 2744	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	34
PID 1724 wrote to memory of 2744	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	34
PID 1724 wrote to memory of 2744	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	34
PID 1724 wrote to memory of 2644	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	37
PID 1724 wrote to memory of 2644	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	37
PID 1724 wrote to memory of 2644	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	37
PID 1724 wrote to memory of 2644	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	37
PID 1724 wrote to memory of 2676	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	38
PID 1724 wrote to memory of 2676	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	38
PID 1724 wrote to memory of 2676	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	38
PID 1724 wrote to memory of 2676	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	38
PID 1724 wrote to memory of 2688	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	39
PID 1724 wrote to memory of 2688	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	39
PID 1724 wrote to memory of 2688	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	39
PID 1724 wrote to memory of 2688	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	39
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40
PID 1724 wrote to memory of 1732	1724	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	40

C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
"C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1724
- 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\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2912
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eJhvEJDc.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2816
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eJhvEJDc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDD64.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2744
- C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
  "C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe"
  2⤵
  PID:2644
- C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
  "C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe"
  2⤵
  PID:2676
- C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
  "C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe"
  2⤵
  PID:2688
- C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
  "C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
80616f768bd28aae855a398cb95810f0

SHA1
0cfa07b66f3badfb4b8bb0cd330913df9bfd0ef6

SHA256
354c43471ff6ef0ae1029b5380ded1dddd64b6bbfdc5232a48c47039949efd1a

SHA512
975a939c998f24710245ba3884a54fb207cee6596f783909c607ad656cdb8418dff95f30f5d4292b6e93ee601802ce4313a6354df83878114c8066e76895e17d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDD64.tmp

Filesize
1KB

MD5
fe786790c482e50c142536e43e78c4d3

SHA1
5954980326fa480a000a4d2d91db09147e7890ff

SHA256
ae26f1d5d867927e44137421af3f681d8580b42044b63a31457781ca8b7ca7ba

SHA512
a2747e55b4e1af8a4473ef9e0ba34ade8eeeb372826b17defea24e0a71988b4d787ab7ef8a51caf5051b1893a8eaf520f489c25d49a7138cae1956bb031a1f98

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\N61UPZOBQLDBVQMEBD35.temp

Filesize
7KB

MD5
945c40b87066a04e66858116e965a549

SHA1
da29deafc11732343e4943030aca6e32f116d871

SHA256
002ea9535b3e8a7b6f495d1d77d7deb30a8edab97af03463d37c9d13961bc81f

SHA512
0a0851814bc960cfc8dcccbe88183d59a6c836d328eb49fe817dc9f8299ce1405828ed4321d7095a2221ff00f9cfb558a4a19fbe114268adcb697f7b8f9b1448

Download Submit
memory/1724-42-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/1724-1-0x0000000000040000-0x000000000014C000-memory.dmp

Filesize
1.0MB

Download
memory/1724-2-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/1724-3-0x0000000000630000-0x000000000064C000-memory.dmp

Filesize
112KB

Download
memory/1724-4-0x000000007469E000-0x000000007469F000-memory.dmp

Filesize
4KB

Download
memory/1724-5-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/1724-6-0x0000000007ED0000-0x0000000007F90000-memory.dmp

Filesize
768KB

Download
memory/1724-0-0x000000007469E000-0x000000007469F000-memory.dmp

Filesize
4KB

Download
memory/1732-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1732-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1732-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download