remcos | 49e8a1f12fb5202470604efe01c0d60949d20d302a76aed85b2a049e91266366

General

Target

z49FACTURA-0987678.exe
Size

854KB
MD5

876f47f33c5975497c15bf24d50952b5
SHA1

a47579ea0e5d47ceb89cbb3450f4c482768a0bf8
SHA256

49e8a1f12fb5202470604efe01c0d60949d20d302a76aed85b2a049e91266366
SHA512

7346f82c0c7065d2de4ec5d5747235ce0ada6e799e6cf461a57ce15969ccd0bf92bf7d5efb2e5b57ad4be0defd3a716bdb6a8c609e0abbe0fb3832f5cfbfd6c3
SSDEEP

24576:Zrl6kD68JmlotQf0hwmcZIR5MRsJOjOZW89S+7Ed7b:1l328U2yf0CmOeMRsnZW8o/h

Score

10^/10

remcos remotehost discovery rat upx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.210.150.26:8787

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
remcos
mouse_option
false
mutex
Rmc-R1T905
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
Remcos family
remcos

Drops startup file 1 IoCs

Processes:

turbinals.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\turbinals.vbs	turbinals.exe

Executes dropped EXE 1 IoCs

Processes:

turbinals.exe

pid	Process
1888	turbinals.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral2/memory/2364-13-0x00000000008B0000-0x0000000000A88000-memory.dmp	autoit_exe
behavioral2/memory/1888-22-0x0000000000E80000-0x0000000001058000-memory.dmp	autoit_exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/2364-0-0x00000000008B0000-0x0000000000A88000-memory.dmp	upx
behavioral2/files/0x000a000000023b89-10.dat	upx
behavioral2/memory/1888-11-0x0000000000E80000-0x0000000001058000-memory.dmp	upx
behavioral2/memory/2364-13-0x00000000008B0000-0x0000000000A88000-memory.dmp	upx
behavioral2/memory/1888-22-0x0000000000E80000-0x0000000001058000-memory.dmp	upx

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

Processes:

turbinals.exez49FACTURA-0987678.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	turbinals.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	z49FACTURA-0987678.exe

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

z49FACTURA-0987678.exeturbinals.exe

pid	Process
2364	z49FACTURA-0987678.exe
2364	z49FACTURA-0987678.exe
1888	turbinals.exe
1888	turbinals.exe

Suspicious use of SendNotifyMessage 4 IoCs

Processes:

z49FACTURA-0987678.exeturbinals.exe

pid	Process
2364	z49FACTURA-0987678.exe
2364	z49FACTURA-0987678.exe
1888	turbinals.exe
1888	turbinals.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

z49FACTURA-0987678.exe

description	pid	Process	procid_target
PID 2364 wrote to memory of 1888	2364	z49FACTURA-0987678.exe	83
PID 2364 wrote to memory of 1888	2364	z49FACTURA-0987678.exe	83
PID 2364 wrote to memory of 1888	2364	z49FACTURA-0987678.exe	83

C:\Users\Admin\AppData\Local\Temp\z49FACTURA-0987678.exe
"C:\Users\Admin\AppData\Local\Temp\z49FACTURA-0987678.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe
  "C:\Users\Admin\AppData\Local\Temp\z49FACTURA-0987678.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:1888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
6d0ab52be413621da05901cb1555c89a

SHA1
15a52d058c3f680822c6ffac5d988f39154ed021

SHA256
c9cc9915a9a7041c1011658b68a2546747c2c522155e494d73bb0cf9043bd63d

SHA512
20d0896bffd4d8cae1d9e6a15c7bc8efde49b727e1de2f1f218e773765c1459127b529215c3d30ac1d72b94a12af276708c9fb519aa1305521c1749711f14653

Download Submit
C:\Users\Admin\AppData\Local\Temp\nonhazardousness

Filesize
481KB

MD5
1d91eeebb3b92b76f541713ef2bfd0ee

SHA1
05a109daafce3d39d6fb3b9e747614a1531f2890

SHA256
206627c14f57b9b6ce47b972da9538c1fc4e941626b803abe5c852e54f309795

SHA512
c55bc96b3de8722e89217116a8b6959857c1beb822bd95284789513b5ff88ca6ef4124156f7d212488249083505268cf68ce59da729dd3b7378b030c89e98489

Download Submit
C:\Users\Admin\AppData\Local\acceptancy\turbinals.exe

Filesize
854KB

MD5
876f47f33c5975497c15bf24d50952b5

SHA1
a47579ea0e5d47ceb89cbb3450f4c482768a0bf8

SHA256
49e8a1f12fb5202470604efe01c0d60949d20d302a76aed85b2a049e91266366

SHA512
7346f82c0c7065d2de4ec5d5747235ce0ada6e799e6cf461a57ce15969ccd0bf92bf7d5efb2e5b57ad4be0defd3a716bdb6a8c609e0abbe0fb3832f5cfbfd6c3

Download Submit
memory/1888-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-11-0x0000000000E80000-0x0000000001058000-memory.dmp

Filesize
1.8MB

Download
memory/1888-22-0x0000000000E80000-0x0000000001058000-memory.dmp

Filesize
1.8MB

Download
memory/1888-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-87-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-86-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1888-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2364-7-0x0000000000FA0000-0x00000000013A0000-memory.dmp

Filesize
4.0MB

Download
memory/2364-13-0x00000000008B0000-0x0000000000A88000-memory.dmp

Filesize
1.8MB

Download
memory/2364-0-0x00000000008B0000-0x0000000000A88000-memory.dmp

Filesize
1.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads