remcos | 43662e68046f7ba9f58863a4f68170c4752e8da64e76324fb25fbabb193bb361

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2024 00:51

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General

Target

newsf.exe
Size

2.0MB
MD5

4d6339eab1f1654594348e436412cd75
SHA1

4682536719f04dd68304c4561507a8b3222eebd5
SHA256

43662e68046f7ba9f58863a4f68170c4752e8da64e76324fb25fbabb193bb361
SHA512

40a72f25c730a50c00480ef54bbc10508bb5d7e2f23537e50ab0993d12e88d2d2ac6657cc434d6f9eca668a94ff6822da14172f547ecc87b550f9c8d1c359131
SSDEEP

49152:G8yeqzXA3KknaWR78tSrBz4UCRWw4zVsvXB5HhMRAovIv2SSOS2inrf3/3u4MrzJ:o5HhMRAovPO9inrXeI3sl+

Score

10^/10

remcos zutopia discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

ZUTOPIA

ardilla00239.ydns.eu:1831

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
sdfjdsjfndsvnd
mouse_option
false
mutex
nnnfdfjdsgfgfs-JXPHK5
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
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

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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CorelPDF = "C:\\Users\\Admin\\Videos\\CorelPDF\\Bin\\CorelPDF.exe"	newsf.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	newsf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	newsf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3956	newsf.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 3956	1680	newsf.exe	88
PID 1680 wrote to memory of 3956	1680	newsf.exe	88
PID 1680 wrote to memory of 3956	1680	newsf.exe	88
PID 1680 wrote to memory of 3956	1680	newsf.exe	88
PID 1680 wrote to memory of 3956	1680	newsf.exe	88

C:\Users\Admin\AppData\Local\Temp\newsf.exe
"C:\Users\Admin\AppData\Local\Temp\newsf.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Users\Admin\AppData\Local\Temp\newsf.exe
  "C:\Users\Admin\AppData\Local\Temp\newsf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3956

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 Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\sdfjdsjfndsvnd\logs.dat

Filesize
184B

MD5
1542b02b3e485822f0b0884926338bfa

SHA1
e9d6e92a1ac6af0c1aa170e5d09ee831e731d541

SHA256
9097e85c97b3fbefecdb534001a6f537d92fd9d42cbd7432d816ef515a7a005d

SHA512
d24844d7185b194a8d5eb9e4ac5a7620378c6fc97dbaf59802e5d490646382cb17570925c099d28c2a1972402519f2490f3fa602401b550cc0caf7ddfc014837

Download Submit
memory/1680-3-0x0000000000400000-0x0000000000611000-memory.dmp

Filesize
2.1MB

Download
memory/1680-0-0x0000000000400000-0x0000000000611000-memory.dmp

Filesize
2.1MB

Download
memory/1680-5-0x0000000000400000-0x0000000000611000-memory.dmp

Filesize
2.1MB

Download
memory/1680-11-0x0000000000400000-0x0000000000611000-memory.dmp

Filesize
2.1MB

Download
memory/1680-6-0x0000000000400000-0x0000000000611000-memory.dmp

Filesize
2.1MB

Download
memory/1680-4-0x0000000000400000-0x0000000000611000-memory.dmp

Filesize
2.1MB

Download
memory/1680-10-0x0000000000400000-0x0000000000611000-memory.dmp

Filesize
2.1MB

Download
memory/1680-1-0x000000000040B000-0x0000000000424000-memory.dmp

Filesize
100KB

Download
memory/1680-19-0x000000000040B000-0x0000000000424000-memory.dmp

Filesize
100KB

Download
memory/3956-7-0x0000000000620000-0x000000000069F000-memory.dmp

Filesize
508KB

Download
memory/3956-17-0x0000000000620000-0x000000000069F000-memory.dmp

Filesize
508KB

Download
memory/3956-18-0x0000000000400000-0x0000000000611000-memory.dmp

Filesize
2.1MB

Download
memory/3956-14-0x0000000000620000-0x000000000069F000-memory.dmp

Filesize
508KB

Download
memory/3956-13-0x0000000000620000-0x000000000069F000-memory.dmp

Filesize
508KB

Download
memory/3956-12-0x0000000000620000-0x000000000069F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads