remcos | 678bea007fe0302874c28fa618e025066b93681f6b4747fef65992e69746cd77

General

Target

Purchase Order.exe
Size

1.1MB
MD5

d5261204d9c158b2bab4272f89f7df17
SHA1

11d82d35d6d5ef250b9cedf4d1f7cd98c0246546
SHA256

27e9c5e774bf0946e99a7f34d14ded33ca1c236765fbcfda83e234d70d15c652
SHA512

2710b22611fca8f90c38c715755a4ec34eec2fd176df45c68c4712d6a5b2803643f09bc05d9d08eb2981f4985355e4d1259eb7a42c8766aabc3f9f1badef4564
SSDEEP

24576:bzls/WgXN832qWivcsegk5vQ2F+wK9ADZyM6RGk:YN832q7vwrQW+wYl

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
2324	powershell.exe
2696	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1620 set thread context of 2996	1620	Purchase Order.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	Purchase Order.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	Purchase Order.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
2612	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2324	powershell.exe
2696	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2324	powershell.exe
Token: SeDebugPrivilege	2696	powershell.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 2324	1620	Purchase Order.exe	31
PID 1620 wrote to memory of 2324	1620	Purchase Order.exe	31
PID 1620 wrote to memory of 2324	1620	Purchase Order.exe	31
PID 1620 wrote to memory of 2324	1620	Purchase Order.exe	31
PID 1620 wrote to memory of 2696	1620	Purchase Order.exe	33
PID 1620 wrote to memory of 2696	1620	Purchase Order.exe	33
PID 1620 wrote to memory of 2696	1620	Purchase Order.exe	33
PID 1620 wrote to memory of 2696	1620	Purchase Order.exe	33
PID 1620 wrote to memory of 2612	1620	Purchase Order.exe	35
PID 1620 wrote to memory of 2612	1620	Purchase Order.exe	35
PID 1620 wrote to memory of 2612	1620	Purchase Order.exe	35
PID 1620 wrote to memory of 2612	1620	Purchase Order.exe	35
PID 1620 wrote to memory of 2996	1620	Purchase Order.exe	37
PID 1620 wrote to memory of 2996	1620	Purchase Order.exe	37
PID 1620 wrote to memory of 2996	1620	Purchase Order.exe	37
PID 1620 wrote to memory of 2996	1620	Purchase Order.exe	37
PID 1620 wrote to memory of 2996	1620	Purchase Order.exe	37
PID 1620 wrote to memory of 2996	1620	Purchase Order.exe	37
PID 1620 wrote to memory of 2996	1620	Purchase Order.exe	37
PID 1620 wrote to memory of 2996	1620	Purchase Order.exe	37
PID 1620 wrote to memory of 2996	1620	Purchase Order.exe	37
PID 1620 wrote to memory of 2996	1620	Purchase Order.exe	37
PID 1620 wrote to memory of 2996	1620	Purchase Order.exe	37

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1620
- 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\Purchase Order.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2324
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\hYpnBXIk.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2696
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hYpnBXIk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1314.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2612
- C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2996

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1314.tmp

Filesize
1KB

MD5
77b150b1e4f51ebd090503ed87ffb854

SHA1
7b3b6b2d18533c44d32a9e01dfa7ea205363845e

SHA256
d8af8386b87709206f138637f0e933d0de9303d12cadbea24efa67fe9f4b6296

SHA512
f4563238f6fa67c105e99ce7c5012eca9d6bcce86a68374fedcc449845dcfb54e73a65b0777beb623ce25c944c567aad9b8e778eea01c5e371d8c5ab56902919

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\LTSOPXYFHIKRZ116RKKZ.temp

Filesize
7KB

MD5
35947b1d7a8ecccdd7f3ef0445ecff75

SHA1
a4e1b38f92b0ce6ca09fd85b9ee179b72ee7f171

SHA256
4c6f66139766559ebc7cf7252594fae7ba10e69273b3eb1fd03357a785ac7d4f

SHA512
5a57bfa744d527f8b61dc14a0d769c1333760f4d676757755fa28edaf06d7f741a1079cb1316d54b2e2e7a3fd54b352d803f85a475c6c4fc09d5061ba38d945e

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

Filesize
7KB

MD5
78ba93612c3b5b1f6da8d10fe9e24307

SHA1
7c46cd5e4720bbf98efbc2ddb6eb1b3c322af6c1

SHA256
5ba6240ede43680d7612904c3bb14c8e615dc8a1565d867e90df9b78d5b0dcf4

SHA512
c625b444fd6af8e748c68cbe02604699293d7e4c972088c8325ba6cb907ef73ec20ddc9f45fb75b0dd4c2fa377d74b0ab3eabb67962c75492a198f3900adb0d3

Download Submit
memory/1620-0-0x0000000073FFE000-0x0000000073FFF000-memory.dmp

Filesize
4KB

Download
memory/1620-1-0x0000000000900000-0x0000000000A1C000-memory.dmp

Filesize
1.1MB

Download
memory/1620-2-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/1620-3-0x0000000000880000-0x000000000089E000-memory.dmp

Filesize
120KB

Download
memory/1620-4-0x0000000073FFE000-0x0000000073FFF000-memory.dmp

Filesize
4KB

Download
memory/1620-5-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/1620-6-0x000000000A260000-0x000000000A324000-memory.dmp

Filesize
784KB

Download
memory/1620-36-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/2996-27-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-37-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-34-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-32-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2996-25-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-23-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-21-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-19-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-29-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-38-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-43-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-42-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-44-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-45-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-46-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-47-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-48-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2996-49-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads