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

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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe

Executes dropped EXE 2 IoCs

pid	Process
2876	wn2ra4ohzdr.exe
4672	wn2ra4ohzdr.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-1-5-21-523280732-2327480845-3730041215-1000\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 2876 set thread context of 4672	2876	wn2ra4ohzdr.exe	95

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4672	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 2876	2648	46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe	94
PID 2648 wrote to memory of 2876	2648	46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe	94
PID 2648 wrote to memory of 2876	2648	46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe	94
PID 2876 wrote to memory of 4672	2876	wn2ra4ohzdr.exe	95
PID 2876 wrote to memory of 4672	2876	wn2ra4ohzdr.exe	95
PID 2876 wrote to memory of 4672	2876	wn2ra4ohzdr.exe	95
PID 2876 wrote to memory of 4672	2876	wn2ra4ohzdr.exe	95
PID 2876 wrote to memory of 4672	2876	wn2ra4ohzdr.exe	95
PID 2876 wrote to memory of 4672	2876	wn2ra4ohzdr.exe	95
PID 2876 wrote to memory of 4672	2876	wn2ra4ohzdr.exe	95
PID 2876 wrote to memory of 4672	2876	wn2ra4ohzdr.exe	95
PID 2876 wrote to memory of 4672	2876	wn2ra4ohzdr.exe	95

C:\Users\Admin\AppData\Local\Temp\46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe
"C:\Users\Admin\AppData\Local\Temp\46126d890c02b8aa69a4776ad7c3fd3f4586c57da53f57cda22efdac37c7e035.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2648
- 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:2876
- - 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:4672

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

Query Registry

1

T1012

System Information Discovery

2

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

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

Filesize
138KB

MD5
ac76fde6035697b737483550479404eb

SHA1
11bd75168391df178cb8c9a797d3bcb7d1179553

SHA256
20481030f1854b7c7de66f0fd677411b916ef2e2f81ff3198bd146224278043e

SHA512
7a19e3a95e1528bcc6bfdc3d8503f1b35a596b828428b842583a740887078791f544f174c3f2e7409916ac8510e49e361c25752d07af0505756dbba95475dce3

Download Submit
memory/2648-20-0x0000000074FD0000-0x0000000075780000-memory.dmp

Filesize
7.7MB

Download
memory/2648-3-0x00000000059D0000-0x0000000005A62000-memory.dmp

Filesize
584KB

Download
memory/2648-5-0x0000000074FD0000-0x0000000075780000-memory.dmp

Filesize
7.7MB

Download
memory/2648-2-0x0000000005EE0000-0x0000000006484000-memory.dmp

Filesize
5.6MB

Download
memory/2648-4-0x0000000005970000-0x000000000597A000-memory.dmp

Filesize
40KB

Download
memory/2648-6-0x0000000005C00000-0x0000000005C20000-memory.dmp

Filesize
128KB

Download
memory/2648-1-0x0000000000F40000-0x0000000000F68000-memory.dmp

Filesize
160KB

Download
memory/2648-0-0x0000000074FDE000-0x0000000074FDF000-memory.dmp

Filesize
4KB

Download
memory/2876-35-0x0000000074FD0000-0x0000000075780000-memory.dmp

Filesize
7.7MB

Download
memory/2876-22-0x0000000074FD0000-0x0000000075780000-memory.dmp

Filesize
7.7MB

Download
memory/2876-33-0x0000000074FD0000-0x0000000075780000-memory.dmp

Filesize
7.7MB

Download
memory/2876-21-0x0000000074FD0000-0x0000000075780000-memory.dmp

Filesize
7.7MB

Download
memory/4672-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-25-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-23-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads