remcos | e05cc67d73ac305af568bad10b09f26ec5641fee5a29cfc4b20d9efc6b2581b0

General

Target

87890090.exe
Size

939KB
MD5

ca330ebb67c44998be8383a64695ee01
SHA1

d12a274d4ca5a31dc1d6d50eb37716fa6fd30289
SHA256

e05cc67d73ac305af568bad10b09f26ec5641fee5a29cfc4b20d9efc6b2581b0
SHA512

44e667e246ca5cbdb1613f86fdd67bc9128612fbaba507bf0d2278b128d6cd9de4b7d1435da99846af2be369d19db05c09c394ce45b4d0d86efaf4211dd4832d
SSDEEP

12288:90R0dF0bI2GYGlbThYHjb7cQwi3xSDBRAqb0TW85LE2kdyMV077HcQCE6lV:90R2WbJGlHEQYSUI8BkHnQ0l

Score

10^/10

remcos mekus discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

mekus

C2

dpm-sael.com:2017

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
meckus-ODY51K
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

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
1872	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2640 set thread context of 2764	2640	87890090.exe	34

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	87890090.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	87890090.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
2664	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1872	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1872	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2764	87890090.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 1872	2640	87890090.exe	30
PID 2640 wrote to memory of 1872	2640	87890090.exe	30
PID 2640 wrote to memory of 1872	2640	87890090.exe	30
PID 2640 wrote to memory of 1872	2640	87890090.exe	30
PID 2640 wrote to memory of 2664	2640	87890090.exe	32
PID 2640 wrote to memory of 2664	2640	87890090.exe	32
PID 2640 wrote to memory of 2664	2640	87890090.exe	32
PID 2640 wrote to memory of 2664	2640	87890090.exe	32
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34
PID 2640 wrote to memory of 2764	2640	87890090.exe	34

C:\Users\Admin\AppData\Local\Temp\87890090.exe
"C:\Users\Admin\AppData\Local\Temp\87890090.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\hshVFxw.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1872
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hshVFxw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCDBB.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2664
- C:\Users\Admin\AppData\Local\Temp\87890090.exe
  "C:\Users\Admin\AppData\Local\Temp\87890090.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2764

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
e3521258ddc739acb4b7be7b34752306

SHA1
f79b0523b1585370c0819b40d3c2e8495e1daf97

SHA256
1f087eed7846ddce4f4d698282cf1427ff12bd45630789324e850e4b8ee47695

SHA512
501fbed70c9f2cb793c42ea2544ca233cac485f1586bd7bec1a8624ce9046e5415427358b57a412f2d6fba044e0282dc37f1f5943715d5f597cbf3d4211de839

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

Filesize
1KB

MD5
40ce74b69922c0dcf4332f43015897de

SHA1
390901bab9522949f41233cc9a2384ab198ff04d

SHA256
3e59541dda3c319da714a2c0275432d431e1db495cecb9998a5ab57ba8e976e5

SHA512
69e351ce7251f7a59bc9f3d5c2f1119de6a6030c6faa4c012c6175b7144bf3e10f08a599b88d017c7b66503aee03409b1637769b4952886dd2f358b53268887d

Download Submit
memory/2640-0-0x00000000744FE000-0x00000000744FF000-memory.dmp

Filesize
4KB

Download
memory/2640-1-0x0000000000FB0000-0x00000000010A0000-memory.dmp

Filesize
960KB

Download
memory/2640-2-0x00000000744F0000-0x0000000074BDE000-memory.dmp

Filesize
6.9MB

Download
memory/2640-3-0x0000000000600000-0x0000000000618000-memory.dmp

Filesize
96KB

Download
memory/2640-4-0x00000000744FE000-0x00000000744FF000-memory.dmp

Filesize
4KB

Download
memory/2640-5-0x00000000744F0000-0x0000000074BDE000-memory.dmp

Filesize
6.9MB

Download
memory/2640-6-0x0000000004EA0000-0x0000000004F60000-memory.dmp

Filesize
768KB

Download
memory/2640-37-0x00000000744F0000-0x0000000074BDE000-memory.dmp

Filesize
6.9MB

Download
memory/2764-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2764-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2764-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads