remcos | 46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035

General

Target

46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe
Size

138KB
MD5

123b4274053df878e6a9e466e7c0ccaf
SHA1

b7098da9010858cb5c75a47916d4c6d294b3cc5d
SHA256

46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035
SHA512

bbacbf7f9e5a379bac4f235415809951e69321d9048da745ae10b4f54b1523d8014ab6073b783796cabb01a240404a75a049845fe2c4efa530c461805493408a
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKh:xPd4n/M+WLcilrpgGH/GwY87mVmIXR

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

systemcontrol.ddns.net:45000

systemcontrol2.ddns.net:45000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
OfficeUpgrade.exe
copy_folder
OfficeUpgrade
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
Upgrader.dat
keylog_flag
false
keylog_folder
Upgrader
keylog_path
%AppData%
mouse_option
false
mutex
req_khauflaoyr
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
OfficeUpgrade
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Executes dropped EXE 2 IoCs

pid	Process
2896	wn2ra4ohzdr.exe
2860	wn2ra4ohzdr.exe

Loads dropped DLL 1 IoCs

pid	Process
2308	46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2896 set thread context of 2860	2896	wn2ra4ohzdr.exe	31

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 3 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	wn2ra4ohzdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2860	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 2896	2308	46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe	30
PID 2308 wrote to memory of 2896	2308	46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe	30
PID 2308 wrote to memory of 2896	2308	46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe	30
PID 2308 wrote to memory of 2896	2308	46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe	30
PID 2896 wrote to memory of 2860	2896	wn2ra4ohzdr.exe	31
PID 2896 wrote to memory of 2860	2896	wn2ra4ohzdr.exe	31
PID 2896 wrote to memory of 2860	2896	wn2ra4ohzdr.exe	31
PID 2896 wrote to memory of 2860	2896	wn2ra4ohzdr.exe	31
PID 2896 wrote to memory of 2860	2896	wn2ra4ohzdr.exe	31
PID 2896 wrote to memory of 2860	2896	wn2ra4ohzdr.exe	31
PID 2896 wrote to memory of 2860	2896	wn2ra4ohzdr.exe	31
PID 2896 wrote to memory of 2860	2896	wn2ra4ohzdr.exe	31
PID 2896 wrote to memory of 2860	2896	wn2ra4ohzdr.exe	31
PID 2896 wrote to memory of 2860	2896	wn2ra4ohzdr.exe	31

C:\Users\Admin\AppData\Local\Temp\46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe
"C:\Users\Admin\AppData\Local\Temp\46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
  "C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2896
- - C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
    "C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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

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Downloads

\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe

Filesize
138KB

MD5
360fe3ad6c9579e55d48191c442ef8bd

SHA1
3fdf1bab22945fb5e9602c335a6fd96140867997

SHA256
16819487874ac780aa8b00e67c0231becc19a9afbdfd2b4d5396e184307218e7

SHA512
c4de2f0de257afed5522b55e5ac134b96dbaa8c1fc8f18301cbf6b006c4cf707413a10e40352fa8983bff1d2a14894455f7096823e6ef2d9495ff2cf2982a9f7

Download Submit
memory/2308-0-0x00000000747FE000-0x00000000747FF000-memory.dmp

Filesize
4KB

Download
memory/2308-1-0x0000000000CD0000-0x0000000000CF8000-memory.dmp

Filesize
160KB

Download
memory/2308-2-0x00000000747F0000-0x0000000074EDE000-memory.dmp

Filesize
6.9MB

Download
memory/2308-3-0x0000000000550000-0x0000000000570000-memory.dmp

Filesize
128KB

Download
memory/2308-12-0x00000000747FE000-0x00000000747FF000-memory.dmp

Filesize
4KB

Download
memory/2308-15-0x00000000747F0000-0x0000000074EDE000-memory.dmp

Filesize
6.9MB

Download
memory/2860-19-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2860-21-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2860-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2860-31-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2860-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2860-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2860-23-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2860-17-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2860-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2896-13-0x00000000747F0000-0x0000000074EDE000-memory.dmp

Filesize
6.9MB

Download
memory/2896-14-0x0000000001150000-0x0000000001178000-memory.dmp

Filesize
160KB

Download
memory/2896-16-0x00000000747F0000-0x0000000074EDE000-memory.dmp

Filesize
6.9MB

Download
memory/2896-35-0x00000000747F0000-0x0000000074EDE000-memory.dmp

Filesize
6.9MB

Download
memory/2896-36-0x00000000747F0000-0x0000000074EDE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads