remcos | b8f7a9a7cc45c8a200c6f2a62f545bac04c8b6ad032c3042b0686307578c3f58

General

Target

Stamped Purchase Order Against Payment.exe
Size

1.2MB
MD5

942c4a30d66950e6b559594639b01811
SHA1

d7f5281bab0aeec1c1abd18e8b67ee8642100168
SHA256

b8f7a9a7cc45c8a200c6f2a62f545bac04c8b6ad032c3042b0686307578c3f58
SHA512

4341d118bd5a76c5fb95b3dc13e9e4649825cd3ddc2e73cb6602fa22d55f2e049b7b8db53c78e25218412f9d6027a813f56dae94d54b0c3057f43ab5815c9a0d
SSDEEP

24576:tu6J33O0c+JY5UZ+XC0kGso6FahskQd8GpnruryULDSYWY:fu0c++OCvkGs9FahanNY

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:51010

196.251.92.49:51010

oni17.duckdns.org:51010

Attributes

audio_folder
MicRecords
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-XLVXMK
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
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

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

Executes dropped EXE 2 IoCs

pid	Process
4796	iodite.exe
5264	iodite.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x000c0000000240cb-9.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5264 set thread context of 4008	5264	iodite.exe	95

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	Stamped Purchase Order Against Payment.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iodite.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iodite.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
4796	iodite.exe
5264	iodite.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
1456	Stamped Purchase Order Against Payment.exe
1456	Stamped Purchase Order Against Payment.exe
4796	iodite.exe
4796	iodite.exe
5264	iodite.exe
5264	iodite.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
1456	Stamped Purchase Order Against Payment.exe
1456	Stamped Purchase Order Against Payment.exe
4796	iodite.exe
4796	iodite.exe
5264	iodite.exe
5264	iodite.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 4796	1456	Stamped Purchase Order Against Payment.exe	89
PID 1456 wrote to memory of 4796	1456	Stamped Purchase Order Against Payment.exe	89
PID 1456 wrote to memory of 4796	1456	Stamped Purchase Order Against Payment.exe	89
PID 4796 wrote to memory of 4644	4796	iodite.exe	92
PID 4796 wrote to memory of 4644	4796	iodite.exe	92
PID 4796 wrote to memory of 4644	4796	iodite.exe	92
PID 4796 wrote to memory of 5264	4796	iodite.exe	93
PID 4796 wrote to memory of 5264	4796	iodite.exe	93
PID 4796 wrote to memory of 5264	4796	iodite.exe	93
PID 5264 wrote to memory of 4008	5264	iodite.exe	95
PID 5264 wrote to memory of 4008	5264	iodite.exe	95
PID 5264 wrote to memory of 4008	5264	iodite.exe	95
PID 5264 wrote to memory of 4008	5264	iodite.exe	95

C:\Users\Admin\AppData\Local\Temp\Stamped Purchase Order Against Payment.exe
"C:\Users\Admin\AppData\Local\Temp\Stamped Purchase Order Against Payment.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1456
- C:\Users\Admin\AppData\Local\ophiolatrous\iodite.exe
  "C:\Users\Admin\AppData\Local\Temp\Stamped Purchase Order Against Payment.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:4796
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Stamped Purchase Order Against Payment.exe"
    3⤵
    PID:4644
- - C:\Users\Admin\AppData\Local\ophiolatrous\iodite.exe
    "C:\Users\Admin\AppData\Local\ophiolatrous\iodite.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:5264
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Users\Admin\AppData\Local\ophiolatrous\iodite.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:4008

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\aut615A.tmp

Filesize
374KB

MD5
41aaa9d3b68707156ff315cdf677adbe

SHA1
e1756b692cdc5f6193876a8ceaa11021f8a3118a

SHA256
4b952fc9bb3af7621a557aa10188e775339e0ad22e39cbce44bd0c4006b2b616

SHA512
3273eb7b9153521bfd6712086cfd955f05f37fd40d09bae6d7674e9ca257087563b99e3be1c20d72136ee9668cdced31ab1ba5cea787c120bcaa294499d67326

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

Filesize
256KB

MD5
4128979f4496ccca65e7a38076547ac5

SHA1
abc8bd503a7ef503695192f9d36fb1c58f920a81

SHA256
8e9ae5a700a2b8b745efcfb16dd43ee11ae76b551b9f5be75a216088ed721cb8

SHA512
0ae495872f41489dcf63dfc544bbfa6281c7aabd1ec7411f82e314097ba66f2e89626a9668fbda42b0ee51fd398e2e923c1685561d237980a2dc1b2ec1f0e350

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

Filesize
469KB

MD5
8838db257d094e02f17fc70af6efa190

SHA1
690f7d109abbb13aaabdcb3078997b5ca2d59ac7

SHA256
33ca63820442a72a45ab78af1792970228b7d0412ba85696cdd3c5be8fd44071

SHA512
fa92fa9e5de130f9e6a6b078d38340b123665f7d5743b995fe12c60c3a0a34c30adc310cbd34ecfd0a130d93c8830f7affa2ac4cccad15ccc65c5b6b272ffa37

Download Submit
C:\Users\Admin\AppData\Local\ophiolatrous\iodite.exe

Filesize
1.2MB

MD5
942c4a30d66950e6b559594639b01811

SHA1
d7f5281bab0aeec1c1abd18e8b67ee8642100168

SHA256
b8f7a9a7cc45c8a200c6f2a62f545bac04c8b6ad032c3042b0686307578c3f58

SHA512
4341d118bd5a76c5fb95b3dc13e9e4649825cd3ddc2e73cb6602fa22d55f2e049b7b8db53c78e25218412f9d6027a813f56dae94d54b0c3057f43ab5815c9a0d

Download Submit
memory/1456-6-0x0000000000C50000-0x0000000001050000-memory.dmp

Filesize
4.0MB

Download
memory/4008-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4008-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4796-18-0x0000000000FA0000-0x00000000013A0000-memory.dmp

Filesize
4.0MB

Download
memory/5264-28-0x0000000001740000-0x0000000001B40000-memory.dmp

Filesize
4.0MB

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