remcos | 5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3

General

Target

5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3.exe
Size

134KB
MD5

936300f5be3926b1bc5f7c836c497d5e
SHA1

17e0fa9d06006b5247468716b9417f4cd91a6bb4
SHA256

5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3
SHA512

bb664c9d37e8615486e9aace662580a4c4a344cd0c6bcd1c88d349e749a1ea8260ea56d8f5ea09113aa0f3f81af8669a730a6c2d53ebed08f7680a148e6673ef
SSDEEP

3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXarMW:xP6/M+WLckOBhVmIqrMW

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
Remcos family
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-1-5-21-3975168204-1612096350-4002976354-1000\Control Panel\International\Geo\Nation	5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3.exe

Executes dropped EXE 2 IoCs

pid	Process
1296	wn2ra4ohzdr.exe
1920	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-1-5-21-3975168204-1612096350-4002976354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1296 set thread context of 1920	1296	wn2ra4ohzdr.exe	97

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	5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3.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
1920	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1316 wrote to memory of 1296	1316	5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3.exe	94
PID 1316 wrote to memory of 1296	1316	5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3.exe	94
PID 1316 wrote to memory of 1296	1316	5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3.exe	94
PID 1296 wrote to memory of 1920	1296	wn2ra4ohzdr.exe	97
PID 1296 wrote to memory of 1920	1296	wn2ra4ohzdr.exe	97
PID 1296 wrote to memory of 1920	1296	wn2ra4ohzdr.exe	97
PID 1296 wrote to memory of 1920	1296	wn2ra4ohzdr.exe	97
PID 1296 wrote to memory of 1920	1296	wn2ra4ohzdr.exe	97
PID 1296 wrote to memory of 1920	1296	wn2ra4ohzdr.exe	97
PID 1296 wrote to memory of 1920	1296	wn2ra4ohzdr.exe	97
PID 1296 wrote to memory of 1920	1296	wn2ra4ohzdr.exe	97
PID 1296 wrote to memory of 1920	1296	wn2ra4ohzdr.exe	97

C:\Users\Admin\AppData\Local\Temp\5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3.exe
"C:\Users\Admin\AppData\Local\Temp\5946317c0a7d30b7c3cda5d87f0f20e00704cafa5a42bd888a7a846dbfdb10a3.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1316
- 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:1296
- - 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:1920

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
134KB

MD5
1cfadd0f8da16b0073fd18e4a656823e

SHA1
dcd1262c09a18f2fdcaf005efe0734468af17cba

SHA256
951ae7094a038ef62407c8a16a19ad769c89303cbfc7160af5f9b287dc7a9b30

SHA512
1de2a9d457f8a9524371b93154c8f4a05ccacae742abfe7e33cad3b5e181cadaef15f926e15e669d6c28206f7959f4eeb8d1f13b6323976467835be1be9eedb8

Download Submit
memory/1296-38-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/1296-34-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/1296-23-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/1296-22-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/1316-5-0x0000000005220000-0x000000000522A000-memory.dmp

Filesize
40KB

Download
memory/1316-2-0x0000000005630000-0x0000000005BD4000-memory.dmp

Filesize
5.6MB

Download
memory/1316-0-0x0000000074E5E000-0x0000000074E5F000-memory.dmp

Filesize
4KB

Download
memory/1316-16-0x0000000074E5E000-0x0000000074E5F000-memory.dmp

Filesize
4KB

Download
memory/1316-21-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/1316-4-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/1316-3-0x0000000005160000-0x00000000051F2000-memory.dmp

Filesize
584KB

Download
memory/1316-6-0x0000000005600000-0x0000000005620000-memory.dmp

Filesize
128KB

Download
memory/1316-1-0x0000000000760000-0x0000000000788000-memory.dmp

Filesize
160KB

Download
memory/1920-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1920-25-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1920-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1920-31-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1920-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1920-27-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads