remcos | abe27f90a49a7e563fc39eb1e0da5c0327e490aefe6638fa4dfa50fea16c42d2

Analysis

max time kernel
151s
max time network
157s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
11/01/2023, 07:32

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General

Target
SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe
Size 928KB
Sample230111-jc11fsbd66
SHA256 abe27f90a49a7e563fc39eb1e0da5c0327e490aefe6638fa4dfa50fea16c42d2
MD5 707bc07daa50b4470e8e992acc3c3a70
SHA1 acac050601ee41db935f340b4842dae2c4affa95
SHA512 a857def44933c4c70152a8059d4b2378cfc8200b484e9008527e1160273d786d61daf580d98dc23f3d3414ab5ab885842bc315c1f45546f6508e6eb19e7d11ad
SSDEEP 24576:gmmP6+bkwvwXnRc9bniMhmbdOkXrsbp1T3:0P6tRXn+AMYhOEkp9
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

brremcoz1.ddns.net:3270

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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-GF6GEY
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

Executes dropped EXE 2 IoCs

pid	Process
1244	remcos.exe
1652	remcos.exe

Loads dropped DLL 1 IoCs

pid	Process
2040	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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\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:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	remcos.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\	remcos.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1196 set thread context of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1244 set thread context of 1652	1244	remcos.exe	40

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
1912	schtasks.exe
988	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1104	powershell.exe
1628	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1104	powershell.exe
Token: SeDebugPrivilege	1628	powershell.exe

Suspicious use of WriteProcessMemory 54 IoCs

description	pid	Process	procid_target
PID 1196 wrote to memory of 1104	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	27
PID 1196 wrote to memory of 1104	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	27
PID 1196 wrote to memory of 1104	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	27
PID 1196 wrote to memory of 1104	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	27
PID 1196 wrote to memory of 1912	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	29
PID 1196 wrote to memory of 1912	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	29
PID 1196 wrote to memory of 1912	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	29
PID 1196 wrote to memory of 1912	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	29
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 1196 wrote to memory of 884	1196	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	31
PID 884 wrote to memory of 948	884	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	32
PID 884 wrote to memory of 948	884	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	32
PID 884 wrote to memory of 948	884	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	32
PID 884 wrote to memory of 948	884	SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe	32
PID 948 wrote to memory of 2040	948	WScript.exe	33
PID 948 wrote to memory of 2040	948	WScript.exe	33
PID 948 wrote to memory of 2040	948	WScript.exe	33
PID 948 wrote to memory of 2040	948	WScript.exe	33
PID 2040 wrote to memory of 1244	2040	cmd.exe	35
PID 2040 wrote to memory of 1244	2040	cmd.exe	35
PID 2040 wrote to memory of 1244	2040	cmd.exe	35
PID 2040 wrote to memory of 1244	2040	cmd.exe	35
PID 1244 wrote to memory of 1628	1244	remcos.exe	38
PID 1244 wrote to memory of 1628	1244	remcos.exe	38
PID 1244 wrote to memory of 1628	1244	remcos.exe	38
PID 1244 wrote to memory of 1628	1244	remcos.exe	38
PID 1244 wrote to memory of 988	1244	remcos.exe	37
PID 1244 wrote to memory of 988	1244	remcos.exe	37
PID 1244 wrote to memory of 988	1244	remcos.exe	37
PID 1244 wrote to memory of 988	1244	remcos.exe	37
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40
PID 1244 wrote to memory of 1652	1244	remcos.exe	40

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jKNdcTqQC.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1104
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jKNdcTqQC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCDFA.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1912
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.25621.22051.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:884
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:948
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:2040
    - - C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        
        C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:1244
      - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jKNdcTqQC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7FAC.tmp"
        6⤵
        Creates scheduled task(s)
        
        PID:988
      - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jKNdcTqQC.exe"
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1628
      - C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        
        "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        
        PID:1652

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

install.vbs

Path C:\Users\Admin\AppData\Local\Temp\install.vbs
Size 418B
SHA256 fa20e9aab03dc8e9f1910aaf0cf42662379fa16ae3a22642084fb97fa3d4f83a
MD5 b92d64fe5b1d1f59df4b738262aea8df
SHA1 c8fb1981759c2d9bb2ec91b705985fba5fc7af63
SHA512 2566248b93c0cfb0414f033b8dd18bbd4f88180093eac2861107289bcb4ee160f9593706ff1f7d1f2e4ecea430d67a5a2897551a4f9ebd82b707243e300520e2
MD5 SHA1 SHA512

Submit Download

tmp7FAC.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp7FAC.tmp
Size 1KB
SHA256 231caa25122151c5bb7d1b9cd851ae413f2626e47b10ba6526b85f22c6b54795
MD5 b8aee8808cc0646490ad32260627a0c7
SHA1 2308ab0e3877429d3267d8285ab11c4f22a93663
SHA512 d2b0488da1fac2eba968f25088dc3f39a673a5ae0b9d97684dba9418026480204098d554ad70e267cbd9262483e8b7c27cbd79c85cdc41f0553fc7fad81f73e9
MD5 SHA1 SHA512

Submit Download

tmpCDFA.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpCDFA.tmp
Size 1KB
SHA256 231caa25122151c5bb7d1b9cd851ae413f2626e47b10ba6526b85f22c6b54795
MD5 b8aee8808cc0646490ad32260627a0c7
SHA1 2308ab0e3877429d3267d8285ab11c4f22a93663
SHA512 d2b0488da1fac2eba968f25088dc3f39a673a5ae0b9d97684dba9418026480204098d554ad70e267cbd9262483e8b7c27cbd79c85cdc41f0553fc7fad81f73e9
MD5 SHA1 SHA512

Submit Download

d93f411851d7c929.customDestinations-ms

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Size 7KB
SHA256 c5b4bc726adf3adcf2b5e5094819e2a66655a8d9375555219aa5026f60800b75
MD5 a9452034d82ce75c15e5585200ff9cf1
SHA1 db09f0353477dc95e9d4751af1a801c19c09e4f8
SHA512 fd7871c6e0660927b73b7df2013135b705f9a6c7c11f138215949a9f5720209673969f2b1b02a9ff6ca97f5b88baa38a316fb77e3d10e2bd04e9125d47eec949
SSDEEP 96:0dKC+M8znqvsqvJCwogdKC+M8znqvsEHyqvJCworN2Q/QHg27lJXlUVdl:Y0PUo80PAHnorNZh27lJIl
MD5 SHA1 SHA512 SSDEEP

Submit Download

remcos.exe

Path C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
Size 928KB
SHA256 abe27f90a49a7e563fc39eb1e0da5c0327e490aefe6638fa4dfa50fea16c42d2
MD5 707bc07daa50b4470e8e992acc3c3a70
SHA1 acac050601ee41db935f340b4842dae2c4affa95
SHA512 a857def44933c4c70152a8059d4b2378cfc8200b484e9008527e1160273d786d61daf580d98dc23f3d3414ab5ab885842bc315c1f45546f6508e6eb19e7d11ad
SSDEEP 24576:gmmP6+bkwvwXnRc9bniMhmbdOkXrsbp1T3:0P6tRXn+AMYhOEkp9
MD5 SHA1 SHA512 SSDEEP

Submit Download

remcos.exe

Path C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
Size 928KB
SHA256 abe27f90a49a7e563fc39eb1e0da5c0327e490aefe6638fa4dfa50fea16c42d2
MD5 707bc07daa50b4470e8e992acc3c3a70
SHA1 acac050601ee41db935f340b4842dae2c4affa95
SHA512 a857def44933c4c70152a8059d4b2378cfc8200b484e9008527e1160273d786d61daf580d98dc23f3d3414ab5ab885842bc315c1f45546f6508e6eb19e7d11ad
SSDEEP 24576:gmmP6+bkwvwXnRc9bniMhmbdOkXrsbp1T3:0P6tRXn+AMYhOEkp9
MD5 SHA1 SHA512 SSDEEP

Submit Download

remcos.exe

Path C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
Size 928KB
SHA256 abe27f90a49a7e563fc39eb1e0da5c0327e490aefe6638fa4dfa50fea16c42d2
MD5 707bc07daa50b4470e8e992acc3c3a70
SHA1 acac050601ee41db935f340b4842dae2c4affa95
SHA512 a857def44933c4c70152a8059d4b2378cfc8200b484e9008527e1160273d786d61daf580d98dc23f3d3414ab5ab885842bc315c1f45546f6508e6eb19e7d11ad
SSDEEP 24576:gmmP6+bkwvwXnRc9bniMhmbdOkXrsbp1T3:0P6tRXn+AMYhOEkp9
MD5 SHA1 SHA512 SSDEEP

Submit Download

remcos.exe

Path \Users\Admin\AppData\Roaming\Remcos\remcos.exe
Size 928KB
SHA256 abe27f90a49a7e563fc39eb1e0da5c0327e490aefe6638fa4dfa50fea16c42d2
MD5 707bc07daa50b4470e8e992acc3c3a70
SHA1 acac050601ee41db935f340b4842dae2c4affa95
SHA512 a857def44933c4c70152a8059d4b2378cfc8200b484e9008527e1160273d786d61daf580d98dc23f3d3414ab5ab885842bc315c1f45546f6508e6eb19e7d11ad
SSDEEP 24576:gmmP6+bkwvwXnRc9bniMhmbdOkXrsbp1T3:0P6tRXn+AMYhOEkp9
MD5 SHA1 SHA512 SSDEEP

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memory/884-82-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/884-65-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/884-67-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/884-69-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/884-70-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/884-71-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/884-72-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/884-74-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/884-76-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/884-80-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/884-64-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1104-85-0x000000006EAD0000-0x000000006F07B000-memory.dmp

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memory/1104-92-0x000000006EAD0000-0x000000006F07B000-memory.dmp

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memory/1196-57-0x0000000000460000-0x000000000046A000-memory.dmp

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memory/1196-54-0x0000000000AB0000-0x0000000000B9C000-memory.dmp

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memory/1196-55-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

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memory/1196-58-0x0000000004CC0000-0x0000000004D74000-memory.dmp

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memory/1196-56-0x0000000000440000-0x0000000000456000-memory.dmp

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memory/1196-63-0x0000000007D00000-0x0000000007D7E000-memory.dmp

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memory/1244-91-0x0000000000FD0000-0x00000000010BC000-memory.dmp

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memory/1244-94-0x00000000008A0000-0x00000000008B6000-memory.dmp

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memory/1628-115-0x00000000733F0000-0x000000007399B000-memory.dmp

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memory/1652-116-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1652-117-0x0000000000400000-0x000000000047F000-memory.dmp

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