remcos | 5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d

Analysis

max time kernel
147s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
02/08/2024, 12:02

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General

Target
5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe
Size 1.4MB
Sample240802-n7fefswfql
SHA256 5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d
MD5 f1176e8d6662faadee1e912fc2da0147
SHA1 d25d2f1d83d48bb502297a049d7efbbb54b07967
SHA512 dc4ebbd293f29bd4b459895e3d58237b21c3b5bf82968d942301ac059dbd4ddb41bd15c75da33b1657678b6351a90049c5a3bb0b71b9887f8dbe24669bfdaeb6
SSDEEP 24576:5f+6UNxk0J9o03BxVtNpTZXJ8PFAx7Yfs1KyyL317qejO7a/eSW6g:5G6U80JK03BxVtTIPFA8VNkolW6
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

eadzagba1.duckdns.org:4877

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
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-3DF634
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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2077438316-259605770-1264560426-1000\Control Panel\International\Geo\Nation	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe

Executes dropped EXE 2 IoCs

pid	Process
216	remcos.exe
1208	remcos.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2077438316-259605770-1264560426-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-3DF634 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-3DF634 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2077438316-259605770-1264560426-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-3DF634 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-3DF634 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2248 set thread context of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 216 set thread context of 1208	216	remcos.exe	88

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	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 2248 wrote to memory of 720	2248	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	86
PID 720 wrote to memory of 216	720	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	87
PID 720 wrote to memory of 216	720	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	87
PID 720 wrote to memory of 216	720	5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe	87
PID 216 wrote to memory of 1208	216	remcos.exe	88
PID 216 wrote to memory of 1208	216	remcos.exe	88
PID 216 wrote to memory of 1208	216	remcos.exe	88
PID 216 wrote to memory of 1208	216	remcos.exe	88
PID 216 wrote to memory of 1208	216	remcos.exe	88
PID 216 wrote to memory of 1208	216	remcos.exe	88
PID 216 wrote to memory of 1208	216	remcos.exe	88
PID 216 wrote to memory of 1208	216	remcos.exe	88
PID 216 wrote to memory of 1208	216	remcos.exe	88
PID 216 wrote to memory of 1208	216	remcos.exe	88
PID 216 wrote to memory of 1208	216	remcos.exe	88
PID 216 wrote to memory of 1208	216	remcos.exe	88

C:\Users\Admin\AppData\Local\Temp\5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe
"C:\Users\Admin\AppData\Local\Temp\5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Users\Admin\AppData\Local\Temp\5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe
  "C:\Users\Admin\AppData\Local\Temp\5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:720
- - C:\ProgramData\Remcos\remcos.exe
    "C:\ProgramData\Remcos\remcos.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:216
  - - C:\ProgramData\Remcos\remcos.exe
      "C:\ProgramData\Remcos\remcos.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:1208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

remcos.exe

Path C:\ProgramData\Remcos\remcos.exe
Size 1.4MB
SHA256 5dbbaa22b757de07d0fb4b665b1863811a2e80498b5265ee903c3998a8684b6d
MD5 f1176e8d6662faadee1e912fc2da0147
SHA1 d25d2f1d83d48bb502297a049d7efbbb54b07967
SHA512 dc4ebbd293f29bd4b459895e3d58237b21c3b5bf82968d942301ac059dbd4ddb41bd15c75da33b1657678b6351a90049c5a3bb0b71b9887f8dbe24669bfdaeb6
SSDEEP 24576:5f+6UNxk0J9o03BxVtNpTZXJ8PFAx7Yfs1KyyL317qejO7a/eSW6g:5G6U80JK03BxVtTIPFA8VNkolW6
MD5 SHA1 SHA512 SSDEEP

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memory/216-36-0x0000000073F00000-0x00000000746B0000-memory.dmp

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memory/216-30-0x0000000005710000-0x0000000005722000-memory.dmp

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memory/216-29-0x0000000073F00000-0x00000000746B0000-memory.dmp

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memory/216-28-0x0000000073F0E000-0x0000000073F0F000-memory.dmp

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memory/720-10-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/720-27-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/720-14-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/720-13-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/720-11-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1208-38-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1208-40-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1208-46-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1208-45-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1208-44-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1208-43-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1208-42-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1208-39-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1208-37-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1208-35-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1208-34-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2248-2-0x0000000005DE0000-0x0000000006384000-memory.dmp

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memory/2248-1-0x0000000000C80000-0x0000000000DF4000-memory.dmp

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memory/2248-3-0x0000000005830000-0x00000000058C2000-memory.dmp

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memory/2248-0-0x00000000745EE000-0x00000000745EF000-memory.dmp

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memory/2248-4-0x00000000057F0000-0x00000000057FA000-memory.dmp

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memory/2248-9-0x0000000006C50000-0x0000000006D10000-memory.dmp

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memory/2248-5-0x00000000745E0000-0x0000000074D90000-memory.dmp

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memory/2248-6-0x00000000059B0000-0x0000000005A4C000-memory.dmp

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memory/2248-16-0x00000000745E0000-0x0000000074D90000-memory.dmp

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memory/2248-7-0x0000000005990000-0x00000000059A2000-memory.dmp

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memory/2248-8-0x0000000005A50000-0x0000000005A5E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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