remcos | 798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34

General

Target

798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe
Size

1.1MB
MD5

bb7ddf35ddc719934858d0f0fb8d754c
SHA1

d9e8e45c53c1225e76181a27c396031a6b51311d
SHA256

798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34
SHA512

d5de4e075f06acc67ff985814b2b2397f418e674c40e7da26e46696abebc0c6e21e59c498d388fba8490efa08f8a28c8b6c5df8c0bea34aab7ed565d33599c1d
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0FG:LTgdZOcuUL3xAx/8b2S7Z0M

Score

10^/10

remcos chinemerem discovery rat

Malware Config

Extracted

Family

remcos

Version

2.2.2 Pro

Botnet

chinemerem

C2

remcoss.onmypc.org:3765

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
r-8ET8H0
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

Executes dropped EXE 2 IoCs

pid	Process
2776	AboutSettingsHandlers.exe
2624	AboutSettingsHandlers.exe

AutoIT Executable 5 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2036-22-0x0000000000B00000-0x0000000000C89000-memory.dmp	autoit_exe
behavioral1/memory/2036-27-0x0000000000B00000-0x0000000000C89000-memory.dmp	autoit_exe
behavioral1/memory/2776-30-0x0000000000320000-0x00000000004A9000-memory.dmp	autoit_exe
behavioral1/memory/2776-44-0x0000000000320000-0x00000000004A9000-memory.dmp	autoit_exe
behavioral1/memory/2776-47-0x0000000000320000-0x00000000004A9000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2036 set thread context of 3020	2036	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	30
PID 2776 set thread context of 2624	2776	AboutSettingsHandlers.exe	36

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AboutSettingsHandlers.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2708	schtasks.exe
2268	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3020	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 3020	2036	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	30
PID 2036 wrote to memory of 3020	2036	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	30
PID 2036 wrote to memory of 3020	2036	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	30
PID 2036 wrote to memory of 3020	2036	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	30
PID 2036 wrote to memory of 3020	2036	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	30
PID 2036 wrote to memory of 3020	2036	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	30
PID 2036 wrote to memory of 2268	2036	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	32
PID 2036 wrote to memory of 2268	2036	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	32
PID 2036 wrote to memory of 2268	2036	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	32
PID 2036 wrote to memory of 2268	2036	798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe	32
PID 2628 wrote to memory of 2776	2628	taskeng.exe	35
PID 2628 wrote to memory of 2776	2628	taskeng.exe	35
PID 2628 wrote to memory of 2776	2628	taskeng.exe	35
PID 2628 wrote to memory of 2776	2628	taskeng.exe	35
PID 2776 wrote to memory of 2624	2776	AboutSettingsHandlers.exe	36
PID 2776 wrote to memory of 2624	2776	AboutSettingsHandlers.exe	36
PID 2776 wrote to memory of 2624	2776	AboutSettingsHandlers.exe	36
PID 2776 wrote to memory of 2624	2776	AboutSettingsHandlers.exe	36
PID 2776 wrote to memory of 2624	2776	AboutSettingsHandlers.exe	36
PID 2776 wrote to memory of 2624	2776	AboutSettingsHandlers.exe	36
PID 2776 wrote to memory of 2708	2776	AboutSettingsHandlers.exe	37
PID 2776 wrote to memory of 2708	2776	AboutSettingsHandlers.exe	37
PID 2776 wrote to memory of 2708	2776	AboutSettingsHandlers.exe	37
PID 2776 wrote to memory of 2708	2776	AboutSettingsHandlers.exe	37

C:\Users\Admin\AppData\Local\Temp\798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe
"C:\Users\Admin\AppData\Local\Temp\798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Local\Temp\798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe
  "C:\Users\Admin\AppData\Local\Temp\798c985ff1a153d61fbfa40754337773a788811e3ddba8fdcaeb904ff2992f34.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3020
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2268

C:\Windows\system32\taskeng.exe
taskeng.exe {559DC784-A92E-4549-AAE4-76F1EB1975C4} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2776
- - C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
    "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
    3⤵
    - Executes dropped EXE
    PID:2624
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

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:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe

Filesize
1.1MB

MD5
b719785d528317c2d5be158f299d915a

SHA1
a44c73eca3d855d2a4951495e7547160f4c3fe90

SHA256
b7783ba56c7ebe74bbc4f6ea61361e365819457991b024712385f2f3fdec1ea7

SHA512
d61cbd56dea75a480ec324ff62ad521ee6af8b06daa39e50cf68b85556efa69ccedcd84c76ee13b259b9a5425c6d032c5b1e5133ad512473f3ca4d1714ddb974

Download Submit
C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
79B

MD5
3b5417385c9939a0bc4d103190c530fe

SHA1
88ec0a8fb9df01787a4c34b08e323628527d93cc

SHA256
4a4cd59205a704e765de16f3786a1f5feaac85d8158a33b10627f541af617b6e

SHA512
6c9545e1fafc406a4bcf2600551f76bf062e6a510a62245407d17547d94664c7885c006e2bede58f15ceb4cd23f02c9b1591f8c3ae683d62033703afbbc9bffe

Download Submit
memory/2036-21-0x0000000000070000-0x0000000000073000-memory.dmp

Filesize
12KB

Download
memory/2036-1-0x0000000000070000-0x0000000000073000-memory.dmp

Filesize
12KB

Download
memory/2036-2-0x0000000000170000-0x0000000000171000-memory.dmp

Filesize
4KB

Download
memory/2036-18-0x0000000002730000-0x00000000028B9000-memory.dmp

Filesize
1.5MB

Download
memory/2036-0-0x0000000000B00000-0x0000000000C89000-memory.dmp

Filesize
1.5MB

Download
memory/2036-27-0x0000000000B00000-0x0000000000C89000-memory.dmp

Filesize
1.5MB

Download
memory/2036-22-0x0000000000B00000-0x0000000000C89000-memory.dmp

Filesize
1.5MB

Download
memory/2624-42-0x0000000000320000-0x00000000004A9000-memory.dmp

Filesize
1.5MB

Download
memory/2624-39-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2776-30-0x0000000000320000-0x00000000004A9000-memory.dmp

Filesize
1.5MB

Download
memory/2776-44-0x0000000000320000-0x00000000004A9000-memory.dmp

Filesize
1.5MB

Download
memory/2776-47-0x0000000000320000-0x00000000004A9000-memory.dmp

Filesize
1.5MB

Download
memory/3020-3-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/3020-14-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/3020-15-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/3020-19-0x0000000000B00000-0x0000000000C89000-memory.dmp

Filesize
1.5MB

Download
memory/3020-20-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/3020-5-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/3020-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads