remcos | c9fab624be92feff5e6666dc84c8b1a1fa23d4535f0960806defa8b30817e133

General

Target

c9fab624be92feff5e6666dc84c8b1a1fa23d4535f0960806defa8b30817e133.exe
Size

140KB
MD5

34842ed9c54bd4205d1aa40ebc118310
SHA1

4cf7b739e561beb0f661fccd25ccc2c28a988410
SHA256

c9fab624be92feff5e6666dc84c8b1a1fa23d4535f0960806defa8b30817e133
SHA512

8baafb898697206325f1ae05bda968b2566cfce4366cba51831e55a2f01465bf26aa710e7d4242794e3a52e3e86b47389c78a3e0473086a0571f6323f4896b31
SSDEEP

3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXhIHVSdC:xP6/M+WLckOBhVmIYmC

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-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	c9fab624be92feff5e6666dc84c8b1a1fa23d4535f0960806defa8b30817e133.exe

Executes dropped EXE 4 IoCs

pid	Process
4780	wn2ra4ohzdr.exe
3760	wn2ra4ohzdr.exe
4236	wn2ra4ohzdr.exe
1504	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-1-5-21-3446877943-4095308722-756223633-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	c9fab624be92feff5e6666dc84c8b1a1fa23d4535f0960806defa8b30817e133.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4780 set thread context of 4236	4780	wn2ra4ohzdr.exe	100
PID 3760 set thread context of 1504	3760	wn2ra4ohzdr.exe	103

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	wn2ra4ohzdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c9fab624be92feff5e6666dc84c8b1a1fa23d4535f0960806defa8b30817e133.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
4236	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4696 wrote to memory of 4780	4696	cmd.exe	93
PID 4696 wrote to memory of 4780	4696	cmd.exe	93
PID 4696 wrote to memory of 4780	4696	cmd.exe	93
PID 1032 wrote to memory of 3760	1032	c9fab624be92feff5e6666dc84c8b1a1fa23d4535f0960806defa8b30817e133.exe	98
PID 1032 wrote to memory of 3760	1032	c9fab624be92feff5e6666dc84c8b1a1fa23d4535f0960806defa8b30817e133.exe	98
PID 1032 wrote to memory of 3760	1032	c9fab624be92feff5e6666dc84c8b1a1fa23d4535f0960806defa8b30817e133.exe	98
PID 4780 wrote to memory of 4236	4780	wn2ra4ohzdr.exe	100
PID 4780 wrote to memory of 4236	4780	wn2ra4ohzdr.exe	100
PID 4780 wrote to memory of 4236	4780	wn2ra4ohzdr.exe	100
PID 4780 wrote to memory of 4236	4780	wn2ra4ohzdr.exe	100
PID 4780 wrote to memory of 4236	4780	wn2ra4ohzdr.exe	100
PID 4780 wrote to memory of 4236	4780	wn2ra4ohzdr.exe	100
PID 4780 wrote to memory of 4236	4780	wn2ra4ohzdr.exe	100
PID 4780 wrote to memory of 4236	4780	wn2ra4ohzdr.exe	100
PID 4780 wrote to memory of 4236	4780	wn2ra4ohzdr.exe	100
PID 3760 wrote to memory of 1504	3760	wn2ra4ohzdr.exe	103
PID 3760 wrote to memory of 1504	3760	wn2ra4ohzdr.exe	103
PID 3760 wrote to memory of 1504	3760	wn2ra4ohzdr.exe	103
PID 3760 wrote to memory of 1504	3760	wn2ra4ohzdr.exe	103
PID 3760 wrote to memory of 1504	3760	wn2ra4ohzdr.exe	103
PID 3760 wrote to memory of 1504	3760	wn2ra4ohzdr.exe	103
PID 3760 wrote to memory of 1504	3760	wn2ra4ohzdr.exe	103
PID 3760 wrote to memory of 1504	3760	wn2ra4ohzdr.exe	103
PID 3760 wrote to memory of 1504	3760	wn2ra4ohzdr.exe	103

C:\Users\Admin\AppData\Local\Temp\c9fab624be92feff5e6666dc84c8b1a1fa23d4535f0960806defa8b30817e133.exe
"C:\Users\Admin\AppData\Local\Temp\c9fab624be92feff5e6666dc84c8b1a1fa23d4535f0960806defa8b30817e133.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1032
- 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:3760
- - C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
    "C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe"
    3⤵
    - Executes dropped EXE
    PID:1504

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:4696
- 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:4780
- - 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:4236

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\Local\Microsoft\CLR_v4.0_32\UsageLogs\wn2ra4ohzdr.exe.log

Filesize
1KB

MD5
7ebe314bf617dc3e48b995a6c352740c

SHA1
538f643b7b30f9231a3035c448607f767527a870

SHA256
48178f884b8a4dd96e330b210b0530667d9473a7629fc6b4ad12b614bf438ee8

SHA512
0ba9d8f4244c15285e254d27b4bff7c49344ff845c48bc0bf0d8563072fab4d6f7a6abe6b6742e8375a08e9a3b3e5d5dc4937ab428dbe2dd8e62892fda04507e

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

Filesize
141KB

MD5
35483553f71d991965ebeb775858ec1b

SHA1
b8b4ae03fd143cf1dc92e9d27e8e97713efc5d63

SHA256
82f539b768707aca2857a700d344601a58611250cdf1a6c58c8fc77b6173b5d9

SHA512
ffd5d9083768654ef99d3a2e01e665153a500b376ccf4b2fc53165c1fadd45af322c3ac12847773d78ef8657568424145119987b7b7c788cbb93f2a20cfd756e

Download Submit
memory/1032-0-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

Filesize
4KB

Download
memory/1032-1-0x00000000004D0000-0x00000000004F8000-memory.dmp

Filesize
160KB

Download
memory/1032-2-0x0000000005490000-0x0000000005A34000-memory.dmp

Filesize
5.6MB

Download
memory/1032-3-0x0000000004EE0000-0x0000000004F72000-memory.dmp

Filesize
584KB

Download
memory/1032-4-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/1032-5-0x0000000005080000-0x000000000508A000-memory.dmp

Filesize
40KB

Download
memory/1032-6-0x0000000005110000-0x0000000005130000-memory.dmp

Filesize
128KB

Download
memory/1032-19-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/1032-14-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

Filesize
4KB

Download
memory/1032-17-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/3760-18-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/3760-38-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/3760-44-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/4236-23-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4236-22-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4236-20-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4236-21-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4236-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4236-27-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4780-13-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/4780-30-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/4780-40-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download
memory/4780-12-0x0000000074CE0000-0x0000000075490000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads