remcos | ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2

General

Target

ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.exe
Size

1.4MB
MD5

f7d7753ba906c463af989cc1ea66a3a9
SHA1

459798998c25c93b2787038a5dcd156ba73bc006
SHA256

ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2
SHA512

109c5a877a47013121bebe86c3451e8bdaa7d8bc42bead5de28f75dbc5bae953c5a60008bd16d73bb65b63f7284bf72111769d2160bde5715c0a7b4a9f3a0d7e
SSDEEP

24576:cqDEvCTbMWu7rQYlBQcBiT6rprG8auyedioIpgYL9MDIaBg:cTvC/MTQYxsWR7auFibTL7

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

eadzagba1.duckdns.org:4877

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-X3UMUO
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
1736	name.exe

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000900000001e557-14.dat	autoit_exe
behavioral2/memory/1736-29-0x0000000000ED0000-0x0000000001031000-memory.dmp	autoit_exe
behavioral2/memory/1736-34-0x0000000000ED0000-0x0000000001031000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1736 set thread context of 4384	1736	name.exe	88

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	ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.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
1736	name.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1884	ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.exe
1884	ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.exe
1736	name.exe
1736	name.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1884	ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.exe
1884	ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.exe
1736	name.exe
1736	name.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 1736	1884	ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.exe	87
PID 1884 wrote to memory of 1736	1884	ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.exe	87
PID 1884 wrote to memory of 1736	1884	ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.exe	87
PID 1736 wrote to memory of 4384	1736	name.exe	88
PID 1736 wrote to memory of 4384	1736	name.exe	88
PID 1736 wrote to memory of 4384	1736	name.exe	88
PID 1736 wrote to memory of 4384	1736	name.exe	88

C:\Users\Admin\AppData\Local\Temp\ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.exe
"C:\Users\Admin\AppData\Local\Temp\ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1884
- C:\Users\Admin\AppData\Local\directory\name.exe
  "C:\Users\Admin\AppData\Local\Temp\ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.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:1736
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4384

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\exhilaratingly

Filesize
483KB

MD5
65e51e1fa61a8c5537085ca5bd8d5e17

SHA1
e05e327ea9c1c91e9c8916a737c157342292d5df

SHA256
629a3f2d7087d533f5dc6d4301e0c546f20dd79c5618a25e7c22acb0bef78d3a

SHA512
48a261640f18c63452425d964ec82a0b2563e742577d84abd11c611336369595cbdff5afcef108a12748ed5d3d7a8c1fbab8140b45e2114b4dbe21b96a005649

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

Filesize
87KB

MD5
83325dd0fedf28c1fb251f2735396905

SHA1
5a3b848daeb4e04ed42f15173253241450e671f6

SHA256
8d5aef55c19fb28949f6b96c845a7f45e983e547c373ccbfffa09aa4531d9005

SHA512
aa237171afb725176392786400788be8bf381601251f32cfeecd742fcf9cb195f28afbbde7a25c119865f0dd4c2688e6ca16b90aa1b2b76d4437e1790b59e2e5

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

Filesize
1.4MB

MD5
f7d7753ba906c463af989cc1ea66a3a9

SHA1
459798998c25c93b2787038a5dcd156ba73bc006

SHA256
ee36f3561339143b4225add8eaf3520a29034e6d910b9b67529128051d0c39b2

SHA512
109c5a877a47013121bebe86c3451e8bdaa7d8bc42bead5de28f75dbc5bae953c5a60008bd16d73bb65b63f7284bf72111769d2160bde5715c0a7b4a9f3a0d7e

Download Submit
memory/1736-34-0x0000000000ED0000-0x0000000001031000-memory.dmp

Filesize
1.4MB

Download
memory/1736-29-0x0000000000ED0000-0x0000000001031000-memory.dmp

Filesize
1.4MB

Download
memory/1884-11-0x0000000000F30000-0x0000000000F34000-memory.dmp

Filesize
16KB

Download
memory/4384-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4384-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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