remcos | aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94

General

Target

aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94.exe
Size

134KB
MD5

ce470ba65a1b2be2c5863fc7692090ff
SHA1

a9f76a1557a43e0b05b4550e78d011c9daabb0b7
SHA256

aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94
SHA512

196d182b9c462161ef98f5ad7a90075e14ecf7c870d0f2c16b96b4e30aeef7f3c2c8085997244dac166440b55fcab763e8164359eaf6e921c94b30bde36fba3e
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

Executes dropped EXE 2 IoCs

pid	Process
2904	wn2ra4ohzdr.exe
2892	wn2ra4ohzdr.exe

Loads dropped DLL 1 IoCs

pid	Process
2360	aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2904 set thread context of 2892	2904	wn2ra4ohzdr.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 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	aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2892	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2904	2360	aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94.exe	30
PID 2360 wrote to memory of 2904	2360	aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94.exe	30
PID 2360 wrote to memory of 2904	2360	aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94.exe	30
PID 2360 wrote to memory of 2904	2360	aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94.exe	30
PID 2904 wrote to memory of 2892	2904	wn2ra4ohzdr.exe	32
PID 2904 wrote to memory of 2892	2904	wn2ra4ohzdr.exe	32
PID 2904 wrote to memory of 2892	2904	wn2ra4ohzdr.exe	32
PID 2904 wrote to memory of 2892	2904	wn2ra4ohzdr.exe	32
PID 2904 wrote to memory of 2892	2904	wn2ra4ohzdr.exe	32
PID 2904 wrote to memory of 2892	2904	wn2ra4ohzdr.exe	32
PID 2904 wrote to memory of 2892	2904	wn2ra4ohzdr.exe	32
PID 2904 wrote to memory of 2892	2904	wn2ra4ohzdr.exe	32
PID 2904 wrote to memory of 2892	2904	wn2ra4ohzdr.exe	32
PID 2904 wrote to memory of 2892	2904	wn2ra4ohzdr.exe	32

C:\Users\Admin\AppData\Local\Temp\aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94.exe
"C:\Users\Admin\AppData\Local\Temp\aa60d4c213d6db491eaed46a81117bd8dbcef9bd85f75349a11ea0e0a5600e94.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2360
- 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:2904
- - 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:2892

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

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

Filesize
134KB

MD5
6d60c44bbc458cbdb40a2be828bae007

SHA1
277745a160c112c07aabf09ddaf20980b5c02e55

SHA256
c81f0c9dd032e6117da342d0e65eedebb8ff06840e4e1bd104fd9a6ff9ce0c16

SHA512
499268dcd9de45e9f0756b10e806e030f6f99b7c153df9a31e61cc7d5e3deb76b5557a57dd25219a14934d32e8d3f6f3caff34f75a77e32719901e5df1911e41

Download Submit
memory/2360-12-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/2360-1-0x00000000012C0000-0x00000000012E8000-memory.dmp

Filesize
160KB

Download
memory/2360-2-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/2360-3-0x00000000005E0000-0x0000000000600000-memory.dmp

Filesize
128KB

Download
memory/2360-0-0x00000000746FE000-0x00000000746FF000-memory.dmp

Filesize
4KB

Download
memory/2892-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2892-22-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2892-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2892-16-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2892-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2892-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2892-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2892-32-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2892-20-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2892-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2892-31-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2904-13-0x0000000000390000-0x00000000003B8000-memory.dmp

Filesize
160KB

Download
memory/2904-14-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/2904-36-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/2904-37-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/2904-15-0x00000000746F0000-0x0000000074DDE000-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