remcos | ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16-12-2024 00:34

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General

Target

ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
Size

1.0MB
MD5

1d1f700e4ea352cb6078f0205608f3d0
SHA1

853f50de0accd7f098e6b5a9e691435be2bcb758
SHA256

ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958
SHA512

c0e9be003625557943197643f72ff040e46456490f9069e8eb98dd7f22925c314e985bed98ad33f1be7da48c57a6b6323454a1f4eb5ef62fa24cc8d42d44de1b
SSDEEP

24576:CyBKoy6YVR7YW/+mJZcchEVq3xwhCR9est:zJLYzYWxZhEw3x6C9es

Score

10^/10

remcos remotehost-new discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost-NEW

zitodavina.duckdns.org:9675

kizitodavina.kozow.com:9675

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Audio.exe
copy_folder
WindowsAudio
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%Temp%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
logz
mouse_option
false
mutex
Rmc-2K9NTE
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

Executes dropped EXE 2 IoCs

pid	Process
2592	Audio.exe
2660	Audio.exe

Loads dropped DLL 3 IoCs

pid	Process
3036	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
3036	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
2592	Audio.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-2K9NTE = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\WindowsAudio\\Audio.exe\""	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-2K9NTE = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\WindowsAudio\\Audio.exe\""	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-2K9NTE = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\WindowsAudio\\Audio.exe\""	Audio.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-2K9NTE = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\WindowsAudio\\Audio.exe\""	Audio.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1748 set thread context of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 2592 set thread context of 2660	2592	Audio.exe	32

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	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Audio.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Audio.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
2592	Audio.exe
2592	Audio.exe
2592	Audio.exe
2592	Audio.exe
2592	Audio.exe
2592	Audio.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
Token: SeDebugPrivilege	2592	Audio.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2660	Audio.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1748 wrote to memory of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 1748 wrote to memory of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 1748 wrote to memory of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 1748 wrote to memory of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 1748 wrote to memory of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 1748 wrote to memory of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 1748 wrote to memory of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 1748 wrote to memory of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 1748 wrote to memory of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 1748 wrote to memory of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 1748 wrote to memory of 3036	1748	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	30
PID 3036 wrote to memory of 2592	3036	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	31
PID 3036 wrote to memory of 2592	3036	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	31
PID 3036 wrote to memory of 2592	3036	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	31
PID 3036 wrote to memory of 2592	3036	ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe	31
PID 2592 wrote to memory of 2660	2592	Audio.exe	32
PID 2592 wrote to memory of 2660	2592	Audio.exe	32
PID 2592 wrote to memory of 2660	2592	Audio.exe	32
PID 2592 wrote to memory of 2660	2592	Audio.exe	32
PID 2592 wrote to memory of 2660	2592	Audio.exe	32
PID 2592 wrote to memory of 2660	2592	Audio.exe	32
PID 2592 wrote to memory of 2660	2592	Audio.exe	32
PID 2592 wrote to memory of 2660	2592	Audio.exe	32
PID 2592 wrote to memory of 2660	2592	Audio.exe	32
PID 2592 wrote to memory of 2660	2592	Audio.exe	32
PID 2592 wrote to memory of 2660	2592	Audio.exe	32

C:\Users\Admin\AppData\Local\Temp\ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
"C:\Users\Admin\AppData\Local\Temp\ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1748
- C:\Users\Admin\AppData\Local\Temp\ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe
  "C:\Users\Admin\AppData\Local\Temp\ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958N.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3036
- - C:\Users\Admin\AppData\Local\Temp\WindowsAudio\Audio.exe
    "C:\Users\Admin\AppData\Local\Temp\WindowsAudio\Audio.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2592
  - - C:\Users\Admin\AppData\Local\Temp\WindowsAudio\Audio.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsAudio\Audio.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:2660

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

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\logz\logs.dat

Filesize
144B

MD5
522448d40bdfea3f4071434f530ea910

SHA1
67cceb3a36457b42942e0820b8fd54337643e8bb

SHA256
ae5d6581d895e35c6c359e7b52232f6774bc020d101f556920d2b536cb8fb496

SHA512
1f120c6ebdc34a6c004859a4bc77efd8084fbed5472b16405a356588d7c0c5c1dde7be97d66d1002f150eb0a63a3df23360d999a7e596e263a81b2a39897c85c

Download Submit
\Users\Admin\AppData\Local\Temp\WindowsAudio\Audio.exe

Filesize
1.0MB

MD5
1d1f700e4ea352cb6078f0205608f3d0

SHA1
853f50de0accd7f098e6b5a9e691435be2bcb758

SHA256
ab76db9334148f06e9422cb37bd4d3208fadd5fb17d3b36b4ac6db7996a77958

SHA512
c0e9be003625557943197643f72ff040e46456490f9069e8eb98dd7f22925c314e985bed98ad33f1be7da48c57a6b6323454a1f4eb5ef62fa24cc8d42d44de1b

Download Submit
memory/1748-6-0x0000000007970000-0x0000000007A34000-memory.dmp

Filesize
784KB

Download
memory/1748-3-0x00000000002C0000-0x00000000002D8000-memory.dmp

Filesize
96KB

Download
memory/1748-4-0x000000007429E000-0x000000007429F000-memory.dmp

Filesize
4KB

Download
memory/1748-5-0x0000000074290000-0x000000007497E000-memory.dmp

Filesize
6.9MB

Download
memory/1748-20-0x0000000074290000-0x000000007497E000-memory.dmp

Filesize
6.9MB

Download
memory/1748-2-0x0000000074290000-0x000000007497E000-memory.dmp

Filesize
6.9MB

Download
memory/1748-0-0x000000007429E000-0x000000007429F000-memory.dmp

Filesize
4KB

Download
memory/1748-1-0x0000000001240000-0x0000000001344000-memory.dmp

Filesize
1.0MB

Download
memory/2592-53-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2592-32-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2592-31-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2592-30-0x0000000001270000-0x0000000001374000-memory.dmp

Filesize
1.0MB

Download
memory/2660-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-92-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-91-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-89-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-88-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-87-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-46-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2660-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-86-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-85-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-83-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2660-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3036-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3036-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3036-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3036-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3036-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3036-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3036-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3036-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3036-8-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download