remcos | 9bef149490674703ed211bd591252d0c1557251e2e0844f4d5885d84ec0207ff

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
12/09/2024, 19:26

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General

Target

b54974cd7b04beb5d6c5377ff6170f7b.exe
Size

1.2MB
MD5

b54974cd7b04beb5d6c5377ff6170f7b
SHA1

229eaffc4f15cbf5b2e21d9360e396aee53fb1b7
SHA256

9bef149490674703ed211bd591252d0c1557251e2e0844f4d5885d84ec0207ff
SHA512

ac5d5bc201933745399d16d2e65967129005d1a41aed4b3988ada76ce9926b752322e075353728fcacbcd84dacd9c74ca62a215a3bec3810b10c986e4302cf11
SSDEEP

24576:2AHnh+eWsN3skA4RV1Hom2KXMmHa3fGd4WclYQnJ/J+MB8hCdC45:Rh+ZkldoPK8Ya3ed4WcyAJB+M+hM

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

45.95.169.137:2404

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-203ZZ1
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\icon.vbs	icon.exe

Executes dropped EXE 1 IoCs

pid	Process
1900	icon.exe

Loads dropped DLL 6 IoCs

pid	Process
1736	b54974cd7b04beb5d6c5377ff6170f7b.exe
2700	WerFault.exe
2700	WerFault.exe
2700	WerFault.exe
2700	WerFault.exe
2700	WerFault.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000016df7-13.dat	autoit_exe
behavioral1/memory/1900-31-0x0000000000150000-0x000000000028E000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1900 set thread context of 2276	1900	icon.exe	30

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2700	1900	WerFault.exe	29

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b54974cd7b04beb5d6c5377ff6170f7b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icon.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1900	icon.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1736	b54974cd7b04beb5d6c5377ff6170f7b.exe
1736	b54974cd7b04beb5d6c5377ff6170f7b.exe
1900	icon.exe
1900	icon.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1736	b54974cd7b04beb5d6c5377ff6170f7b.exe
1736	b54974cd7b04beb5d6c5377ff6170f7b.exe
1900	icon.exe
1900	icon.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 1900	1736	b54974cd7b04beb5d6c5377ff6170f7b.exe	29
PID 1736 wrote to memory of 1900	1736	b54974cd7b04beb5d6c5377ff6170f7b.exe	29
PID 1736 wrote to memory of 1900	1736	b54974cd7b04beb5d6c5377ff6170f7b.exe	29
PID 1736 wrote to memory of 1900	1736	b54974cd7b04beb5d6c5377ff6170f7b.exe	29
PID 1900 wrote to memory of 2276	1900	icon.exe	30
PID 1900 wrote to memory of 2276	1900	icon.exe	30
PID 1900 wrote to memory of 2276	1900	icon.exe	30
PID 1900 wrote to memory of 2276	1900	icon.exe	30
PID 1900 wrote to memory of 2276	1900	icon.exe	30
PID 1900 wrote to memory of 2700	1900	icon.exe	31
PID 1900 wrote to memory of 2700	1900	icon.exe	31
PID 1900 wrote to memory of 2700	1900	icon.exe	31
PID 1900 wrote to memory of 2700	1900	icon.exe	31

C:\Users\Admin\AppData\Local\Temp\b54974cd7b04beb5d6c5377ff6170f7b.exe
"C:\Users\Admin\AppData\Local\Temp\b54974cd7b04beb5d6c5377ff6170f7b.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Users\Admin\AppData\Local\directory\icon.exe
  "C:\Users\Admin\AppData\Local\Temp\b54974cd7b04beb5d6c5377ff6170f7b.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:1900
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\b54974cd7b04beb5d6c5377ff6170f7b.exe"
    3⤵
    PID:2276
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1900 -s 352
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\demonetising

Filesize
196KB

MD5
b034f1aaa54283ee47c256574a85ff9a

SHA1
5de291e89694d741e0af1bd240d1bab7a8988dcf

SHA256
10f5c3a669be97b559ab6b46cee58a290cccc74ccaa411723f278080a708ea3a

SHA512
83cedbd49ff14e9f4febdd5f06606886f07d79d812e17eb7c936aa5ea89982d99e398122331c0a69f7684495f56777a7e6c3d195b359376700c03c447572964a

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

Filesize
1.2MB

MD5
b54974cd7b04beb5d6c5377ff6170f7b

SHA1
229eaffc4f15cbf5b2e21d9360e396aee53fb1b7

SHA256
9bef149490674703ed211bd591252d0c1557251e2e0844f4d5885d84ec0207ff

SHA512
ac5d5bc201933745399d16d2e65967129005d1a41aed4b3988ada76ce9926b752322e075353728fcacbcd84dacd9c74ca62a215a3bec3810b10c986e4302cf11

Download Submit
memory/1736-11-0x0000000000270000-0x0000000000274000-memory.dmp

Filesize
16KB

Download
memory/1900-31-0x0000000000150000-0x000000000028E000-memory.dmp

Filesize
1.2MB

Download
memory/2276-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-87-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-88-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-89-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-90-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-91-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-92-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-95-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-96-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-97-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-98-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2276-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download