remcos | 490f282d4fd00248b4f2c3ee4b5586d7af9b8cef6702f035abfee65482289d99

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
23/01/2023, 10:19

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General

Target
RFQ 80380 N 2023 JANUARY 04606.gz.exe
Size 864KB
Sample230123-mch2esch37
SHA256 490f282d4fd00248b4f2c3ee4b5586d7af9b8cef6702f035abfee65482289d99
MD5 909588e87fae1849fbe46e446776ed1a
SHA1 f59fdf850bdfd1a83f81b451d7ce7e7d8a17a976
SHA512 3219a9f72dc45b2ff07558f551a368652eb9cb24bd629db5c528b2df83a10cf20ce4c7d84eb0cebcfb921cc1f64b215a5b37798ae3cb105a627983c28b132dec
SSDEEP 24576:GmVXplzJdNDxd0kPPwa2lLtgAl2BoKruMwD+:d9plzJPDxd0kPPwRlqAl2BohMwi
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

45.139.105.174:6320

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
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-F4ZT0S
screenshot_crypt
false
screenshot_flag
true
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
1
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

Executes dropped EXE 2 IoCs

pid	Process
1612	remcos.exe
1656	remcos.exe

Loads dropped DLL 1 IoCs

pid	Process
1200	cmd.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	remcos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\	RFQ 80380 N 2023 JANUARY 04606.gz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	RFQ 80380 N 2023 JANUARY 04606.gz.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	RFQ 80380 N 2023 JANUARY 04606.gz.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	RFQ 80380 N 2023 JANUARY 04606.gz.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\	remcos.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1988 set thread context of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1612 set thread context of 1656	1612	remcos.exe	39

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1308	schtasks.exe
536	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe
1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe
976	powershell.exe
1612	remcos.exe
1556	powershell.exe
1612	remcos.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe
Token: SeDebugPrivilege	976	powershell.exe
Token: SeDebugPrivilege	1612	remcos.exe
Token: SeDebugPrivilege	1556	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1656	remcos.exe

Suspicious use of WriteProcessMemory 54 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 976	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	26
PID 1988 wrote to memory of 976	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	26
PID 1988 wrote to memory of 976	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	26
PID 1988 wrote to memory of 976	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	26
PID 1988 wrote to memory of 1308	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	28
PID 1988 wrote to memory of 1308	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	28
PID 1988 wrote to memory of 1308	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	28
PID 1988 wrote to memory of 1308	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	28
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1988 wrote to memory of 1732	1988	RFQ 80380 N 2023 JANUARY 04606.gz.exe	30
PID 1732 wrote to memory of 640	1732	RFQ 80380 N 2023 JANUARY 04606.gz.exe	31
PID 1732 wrote to memory of 640	1732	RFQ 80380 N 2023 JANUARY 04606.gz.exe	31
PID 1732 wrote to memory of 640	1732	RFQ 80380 N 2023 JANUARY 04606.gz.exe	31
PID 1732 wrote to memory of 640	1732	RFQ 80380 N 2023 JANUARY 04606.gz.exe	31
PID 640 wrote to memory of 1200	640	WScript.exe	32
PID 640 wrote to memory of 1200	640	WScript.exe	32
PID 640 wrote to memory of 1200	640	WScript.exe	32
PID 640 wrote to memory of 1200	640	WScript.exe	32
PID 1200 wrote to memory of 1612	1200	cmd.exe	34
PID 1200 wrote to memory of 1612	1200	cmd.exe	34
PID 1200 wrote to memory of 1612	1200	cmd.exe	34
PID 1200 wrote to memory of 1612	1200	cmd.exe	34
PID 1612 wrote to memory of 1556	1612	remcos.exe	35
PID 1612 wrote to memory of 1556	1612	remcos.exe	35
PID 1612 wrote to memory of 1556	1612	remcos.exe	35
PID 1612 wrote to memory of 1556	1612	remcos.exe	35
PID 1612 wrote to memory of 536	1612	remcos.exe	37
PID 1612 wrote to memory of 536	1612	remcos.exe	37
PID 1612 wrote to memory of 536	1612	remcos.exe	37
PID 1612 wrote to memory of 536	1612	remcos.exe	37
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39
PID 1612 wrote to memory of 1656	1612	remcos.exe	39

C:\Users\Admin\AppData\Local\Temp\RFQ 80380 N 2023 JANUARY 04606.gz.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ 80380 N 2023 JANUARY 04606.gz.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gwUgywwXAo.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:976
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gwUgywwXAo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1FF0.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1308
- C:\Users\Admin\AppData\Local\Temp\RFQ 80380 N 2023 JANUARY 04606.gz.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ 80380 N 2023 JANUARY 04606.gz.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1732
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\xljelpguyyhoggnwwlymxlwieqcs.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:640
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\Remcos\remcos.exe"
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:1200
    - - C:\ProgramData\Remcos\remcos.exe
        
        C:\ProgramData\Remcos\remcos.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1612
      - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gwUgywwXAo.exe"
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1556
      - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gwUgywwXAo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC6D9.tmp"
        6⤵
        Creates scheduled task(s)
        
        PID:536
      - C:\ProgramData\Remcos\remcos.exe
        
        "C:\ProgramData\Remcos\remcos.exe"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of SetWindowsHookEx
        
        PID:1656

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

remcos.exe

Path C:\ProgramData\Remcos\remcos.exe
Size 864KB
SHA256 490f282d4fd00248b4f2c3ee4b5586d7af9b8cef6702f035abfee65482289d99
MD5 909588e87fae1849fbe46e446776ed1a
SHA1 f59fdf850bdfd1a83f81b451d7ce7e7d8a17a976
SHA512 3219a9f72dc45b2ff07558f551a368652eb9cb24bd629db5c528b2df83a10cf20ce4c7d84eb0cebcfb921cc1f64b215a5b37798ae3cb105a627983c28b132dec
SSDEEP 24576:GmVXplzJdNDxd0kPPwa2lLtgAl2BoKruMwD+:d9plzJPDxd0kPPwRlqAl2BohMwi
MD5 SHA1 SHA512 SSDEEP

Submit Download

remcos.exe

Path C:\ProgramData\Remcos\remcos.exe
Size 864KB
SHA256 490f282d4fd00248b4f2c3ee4b5586d7af9b8cef6702f035abfee65482289d99
MD5 909588e87fae1849fbe46e446776ed1a
SHA1 f59fdf850bdfd1a83f81b451d7ce7e7d8a17a976
SHA512 3219a9f72dc45b2ff07558f551a368652eb9cb24bd629db5c528b2df83a10cf20ce4c7d84eb0cebcfb921cc1f64b215a5b37798ae3cb105a627983c28b132dec
SSDEEP 24576:GmVXplzJdNDxd0kPPwa2lLtgAl2BoKruMwD+:d9plzJPDxd0kPPwRlqAl2BohMwi
MD5 SHA1 SHA512 SSDEEP

Submit Download

remcos.exe

Path C:\ProgramData\Remcos\remcos.exe
Size 864KB
SHA256 490f282d4fd00248b4f2c3ee4b5586d7af9b8cef6702f035abfee65482289d99
MD5 909588e87fae1849fbe46e446776ed1a
SHA1 f59fdf850bdfd1a83f81b451d7ce7e7d8a17a976
SHA512 3219a9f72dc45b2ff07558f551a368652eb9cb24bd629db5c528b2df83a10cf20ce4c7d84eb0cebcfb921cc1f64b215a5b37798ae3cb105a627983c28b132dec
SSDEEP 24576:GmVXplzJdNDxd0kPPwa2lLtgAl2BoKruMwD+:d9plzJPDxd0kPPwRlqAl2BohMwi
MD5 SHA1 SHA512 SSDEEP

Submit Download

tmp1FF0.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp1FF0.tmp
Size 1KB
SHA256 16a1c6912c600e36bd942b84f7c86313300cad69ae8b04e5767409776343767e
MD5 e798601e33a6b741448b421e4ab4d319
SHA1 8fae1a0c6e191b1bd7c765053e720186876f482b
SHA512 6cf08e88eb8bc804464879d547fefbe9f8f77cacffca335af7a7ecfb494895251d3fdc78b80375086bd419a4a112f38c703e445aa95a644c868b9d455bf3b91a
MD5 SHA1 SHA512

Submit Download

tmpC6D9.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpC6D9.tmp
Size 1KB
SHA256 16a1c6912c600e36bd942b84f7c86313300cad69ae8b04e5767409776343767e
MD5 e798601e33a6b741448b421e4ab4d319
SHA1 8fae1a0c6e191b1bd7c765053e720186876f482b
SHA512 6cf08e88eb8bc804464879d547fefbe9f8f77cacffca335af7a7ecfb494895251d3fdc78b80375086bd419a4a112f38c703e445aa95a644c868b9d455bf3b91a
MD5 SHA1 SHA512

Submit Download

xljelpguyyhoggnwwlymxlwieqcs.vbs

Path C:\Users\Admin\AppData\Local\Temp\xljelpguyyhoggnwwlymxlwieqcs.vbs
Size 386B
SHA256 6efdc40f9eb217f879607614e928b65bff759e424f3efb31faceb2a043c32dc2
MD5 1ec6289c6fd4c2ded6b2836ed28cbeb5
SHA1 c4e08195e6c640eb8860acc03fda1d649b4fe070
SHA512 20bc46f4dee22f75f15c402c7c2eaee60fff7dd92548050585571dcbefd59485cc249c06bc3f1aac7a138e5ae67c0c3918b46ffa24c8b0f1b092e2f6b6e21288
MD5 SHA1 SHA512

Submit Download

d93f411851d7c929.customDestinations-ms

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Size 7KB
SHA256 f03871f0bb2efdd9c403d2f4b933f6548aafed3e6fc7e6316d2f9245dcbaf683
MD5 b4e3ba6500295ae61a47eda44b2a78e2
SHA1 d683ee6f5976af21c443ce6cbfa4779a5861ae9c
SHA512 e94ea93995d6add608da1e3e76fb9e1ba51ae1024e26f5b2d9c8f09d76cee9dd22754217affe4f952d3522557a182e8884918fe7448ab9cffea0731a90342d33
SSDEEP 96:g5qCpM8enqvsqvJCwoA5qCpM8enqvsEHyqvJCwor4OsjlQHaM7MiXlUV3:47iUoY7iAHnor4hzM7Mi0
MD5 SHA1 SHA512 SSDEEP

Submit Download

remcos.exe

Path \ProgramData\Remcos\remcos.exe
Size 864KB
SHA256 490f282d4fd00248b4f2c3ee4b5586d7af9b8cef6702f035abfee65482289d99
MD5 909588e87fae1849fbe46e446776ed1a
SHA1 f59fdf850bdfd1a83f81b451d7ce7e7d8a17a976
SHA512 3219a9f72dc45b2ff07558f551a368652eb9cb24bd629db5c528b2df83a10cf20ce4c7d84eb0cebcfb921cc1f64b215a5b37798ae3cb105a627983c28b132dec
SSDEEP 24576:GmVXplzJdNDxd0kPPwa2lLtgAl2BoKruMwD+:d9plzJPDxd0kPPwRlqAl2BohMwi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/976-94-0x000000006E8E0000-0x000000006EE8B000-memory.dmp

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memory/976-85-0x000000006E8E0000-0x000000006EE8B000-memory.dmp

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memory/1556-118-0x0000000073140000-0x00000000736EB000-memory.dmp

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memory/1612-93-0x0000000000450000-0x0000000000462000-memory.dmp

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memory/1612-91-0x0000000010870000-0x000000001094C000-memory.dmp

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memory/1656-120-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1656-119-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1656-117-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1732-71-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1732-74-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1732-69-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1732-67-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1732-72-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1732-80-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1732-65-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1732-64-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1732-70-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1732-76-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1732-82-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1988-63-0x0000000005740000-0x00000000057BE000-memory.dmp

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memory/1988-56-0x0000000000480000-0x0000000000492000-memory.dmp

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memory/1988-57-0x0000000000530000-0x000000000053A000-memory.dmp

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memory/1988-55-0x0000000075A91000-0x0000000075A93000-memory.dmp

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memory/1988-58-0x0000000005600000-0x00000000056B4000-memory.dmp

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memory/1988-54-0x0000000010E00000-0x0000000010EDC000-memory.dmp

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