remcos | 0482038dee8cdc3992533d6d3bfd36123a0efc02809b9c1cb87febef83a3517a

General

Target

POLIST.exe
Size

2.0MB
MD5

e21b8ab721253a904d148587bb256be4
SHA1

36c602234b7a066799d81ec264cb44ac366a0a8e
SHA256

0482038dee8cdc3992533d6d3bfd36123a0efc02809b9c1cb87febef83a3517a
SHA512

efc3adfd0023202c9582c5890d69fb995122bdaf1453c1be9c301cf4e74ed7c1191b4ee58ea51ad1661749a78a472b07d6a039da9afb1a9c1f8c99c3ebb5e0ba
SSDEEP

49152:6TvC/MTQYxsWR7alUZqvJ+UtB7wxAzbimbJX:KjTQYxsWRpZqvJ+kBGob7bJ

Score

10^/10

remcos spirit discovery rat

Malware Config

Extracted

Family

remcos

Botnet

SPIRIT

C2

nzobaku.ddns.net:8081

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-KF96SW
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

Drops startup file 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
1972	name.exe

Loads dropped DLL 1 IoCs

pid	Process
2412	POLIST.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000016ce0-4.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1972 set thread context of 1516	1972	name.exe	32

System Location Discovery: System Language Discovery 1 TTPs 3 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	POLIST.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	name.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1972	name.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2412	POLIST.exe
2412	POLIST.exe
1972	name.exe
1972	name.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2412	POLIST.exe
2412	POLIST.exe
1972	name.exe
1972	name.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1516	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 1972	2412	POLIST.exe	31
PID 2412 wrote to memory of 1972	2412	POLIST.exe	31
PID 2412 wrote to memory of 1972	2412	POLIST.exe	31
PID 2412 wrote to memory of 1972	2412	POLIST.exe	31
PID 1972 wrote to memory of 1516	1972	name.exe	32
PID 1972 wrote to memory of 1516	1972	name.exe	32
PID 1972 wrote to memory of 1516	1972	name.exe	32
PID 1972 wrote to memory of 1516	1972	name.exe	32
PID 1972 wrote to memory of 1516	1972	name.exe	32

C:\Users\Admin\AppData\Local\Temp\POLIST.exe
"C:\Users\Admin\AppData\Local\Temp\POLIST.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Users\Admin\AppData\Local\directory\name.exe
  "C:\Users\Admin\AppData\Local\Temp\POLIST.exe"
  2⤵
  - Drops startup file
  - 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:1972
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\POLIST.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:1516

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
53e64885cb878211b1aadeec76544e58

SHA1
f526483cd48d7793b57edc859347e1138fcfff22

SHA256
922ba9aa82399b14f0cd2b33834a106ca04e7a491b6290b267a45dcd15ead4d0

SHA512
69201892ea3ab35b803bf35f9e7b6fb367ceb1030bc7dbc04facd6b37a63c09b2ee07c7797ef48591a114feaf7d3c01cc7fa92b18b51c693571e8e44c813211d

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

Filesize
483KB

MD5
1fc80ac34be519e28e3757341f064a64

SHA1
31e4602cd374fb979960f6a8076d0c288904181b

SHA256
3c7fc890f67d3c88fce9b6f028bc4b414be3071cca5047527860f1130ca8e8f7

SHA512
1e0aeca082457812bf9e3fefee585a0cc56a446726b9b3c32c982b5b6bc3bf445d607974e3d8223ab37a1cf1bfcd9a53604196cb03ec6d49cda3957ce0da7ef9

Download Submit
\Users\Admin\AppData\Local\directory\name.exe

Filesize
2.0MB

MD5
e21b8ab721253a904d148587bb256be4

SHA1
36c602234b7a066799d81ec264cb44ac366a0a8e

SHA256
0482038dee8cdc3992533d6d3bfd36123a0efc02809b9c1cb87febef83a3517a

SHA512
efc3adfd0023202c9582c5890d69fb995122bdaf1453c1be9c301cf4e74ed7c1191b4ee58ea51ad1661749a78a472b07d6a039da9afb1a9c1f8c99c3ebb5e0ba

Download Submit
memory/1516-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1516-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1972-13-0x0000000002F80000-0x0000000003380000-memory.dmp

Filesize
4.0MB

Download
memory/2412-2-0x0000000002D80000-0x0000000002F80000-memory.dmp

Filesize
2.0MB

Download
memory/2412-9-0x0000000002D80000-0x0000000002F80000-memory.dmp

Filesize
2.0MB

Download
memory/2412-1-0x0000000002D80000-0x0000000002F80000-memory.dmp

Filesize
2.0MB

Download

Analysis

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