remcos | 70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
08-04-2024 12:19

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
Size

703KB
MD5

cfeae297e7b47d957e9e275ede703064
SHA1

f31ea0ebf131e7186acf028687581318642eff74
SHA256

70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92
SHA512

ebd1a85b790743ee2784a87b0d993151d6c7a53eb1ab5f72cd79d490c56aca511ae369dd04067187ea62bbd3cde803c1bc7b1d628696aff4e3c0ce5e21051e1a
SSDEEP

12288:HpIgdWtnyVADTJUSx1VUDp5eHKCREbiALl4JFznCy:XdWtnyVAJvx1VUKkOMOJ1C

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

81.17.17.70:1198

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
windowsfiles.exe
copy_folder
windowsfiles
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
windowsfiles
keylog_path
%AppData%
mouse_option
false
mutex
Rmc-NMB4R7
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Processes:

windowsfiles.exewindowsfiles.exe

pid process

1172 windowsfiles.exe
1176 windowsfiles.exe
Loads dropped DLL 2 IoCs

Processes:

70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exewindowsfiles.exe

pid process

3020 70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
1172 windowsfiles.exe

pid	process
1172	windowsfiles.exe
1176	windowsfiles.exe

pid	process
3020	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
1172	windowsfiles.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exewindowsfiles.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\""	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\""	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\""	windowsfiles.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\""	windowsfiles.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exewindowsfiles.exe

description	pid	process	target process
PID 3036 set thread context of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 1172 set thread context of 1176	1172	windowsfiles.exe	windowsfiles.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

windowsfiles.exe

pid process

1176 windowsfiles.exe

pid	process
1176	windowsfiles.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exewindowsfiles.exe

description	pid	process	target process
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3036 wrote to memory of 3020	3036	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
PID 3020 wrote to memory of 1172	3020	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	windowsfiles.exe
PID 3020 wrote to memory of 1172	3020	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	windowsfiles.exe
PID 3020 wrote to memory of 1172	3020	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	windowsfiles.exe
PID 3020 wrote to memory of 1172	3020	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	windowsfiles.exe
PID 3020 wrote to memory of 1172	3020	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	windowsfiles.exe
PID 3020 wrote to memory of 1172	3020	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	windowsfiles.exe
PID 3020 wrote to memory of 1172	3020	70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe
PID 1172 wrote to memory of 1176	1172	windowsfiles.exe	windowsfiles.exe

C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
"C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3036

C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
"C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe"
2⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3020

C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
"C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1172

C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
"C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe"
4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:1176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\windowsfiles\logs.dat

Filesize
144B

MD5
84fff6d9d64384a1f217886c90f7cf67

SHA1
3040cfbabcd383e414f07b775d4ad45ff03b6166

SHA256
fb319f19f28e69b81a5afeb5fba5cecd324cd8cac864533eb9b3db5917429c8c

SHA512
263fdf315b6b590849c1015a682e6f949a33677c58fb5e57fc8750f110a0e367bda2b2e7a804e95d7e77e319f81186f9ac3d5adf544f0dc2a2ddaacffc5f77c9

Download Submit
\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe

Filesize
703KB

MD5
cfeae297e7b47d957e9e275ede703064

SHA1
f31ea0ebf131e7186acf028687581318642eff74

SHA256
70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92

SHA512
ebd1a85b790743ee2784a87b0d993151d6c7a53eb1ab5f72cd79d490c56aca511ae369dd04067187ea62bbd3cde803c1bc7b1d628696aff4e3c0ce5e21051e1a

Download Submit
memory/1172-53-0x00000000741E0000-0x00000000748CE000-memory.dmp

Filesize
6.9MB

Download
memory/1172-35-0x00000000741E0000-0x00000000748CE000-memory.dmp

Filesize
6.9MB

Download
memory/1172-34-0x0000000000A80000-0x0000000000B36000-memory.dmp

Filesize
728KB

Download
memory/1172-37-0x0000000004950000-0x0000000004990000-memory.dmp

Filesize
256KB

Download
memory/1176-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-98-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-91-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-48-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1176-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1176-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3020-5-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/3020-3-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/3020-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3020-11-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/3020-21-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/3020-26-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/3020-10-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/3020-9-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/3020-15-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/3020-6-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/3020-7-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/3020-8-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/3036-16-0x00000000747E0000-0x0000000074ECE000-memory.dmp

Filesize
6.9MB

Download
memory/3036-2-0x0000000004500000-0x0000000004540000-memory.dmp

Filesize
256KB

Download
memory/3036-1-0x00000000747E0000-0x0000000074ECE000-memory.dmp

Filesize
6.9MB

Download
memory/3036-0-0x0000000000350000-0x0000000000406000-memory.dmp

Filesize
728KB

Download