remcos | 61df7ca0905ea6e9d63cb0f6cf9a1d2cb7b4feb201a0d67eb28ea7bb4af5d98d

General

Target

db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe
Size

92KB
MD5

db01a90149095e26573ea6ccec5a68f8
SHA1

4561d246584a85b91b0e93f812a45b358a5080f2
SHA256

61df7ca0905ea6e9d63cb0f6cf9a1d2cb7b4feb201a0d67eb28ea7bb4af5d98d
SHA512

482cc4d84fd2e2704b2d3407700b70da893c51fd7848a594ac93dd7d0cb876d2d38b113968aba04b0cd3d8880f06116f8b1266e171bfd6e2b3db2c323e8466ca
SSDEEP

1536:QhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP69rR:2hzYTGWVvJ8f2v1TbPzuMsIFSHNThy+E

Score

10^/10

remcos host discovery evasion persistence rat trojan

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

94.237.28.110:64526

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
system32.exe
copy_folder
system32
delete_file
true
hide_file
true
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
system32.dat
keylog_flag
false
keylog_folder
system32
keylog_path
%AppData%
mouse_option
true
mutex
remcos_ygupmnetsf
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
system32
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

UAC bypass 3 TTPs 2 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	system32.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2536	system32.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\system32\\system32.exe\""	db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\system32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\system32\\system32.exe\""	db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\system32\\system32.exe\""	system32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\system32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\system32\\system32.exe\""	system32.exe

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 8 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	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	system32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
408	PING.EXE

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
3196	reg.exe
1592	reg.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
408	PING.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2536	system32.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4272 wrote to memory of 2300	4272	db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe	86
PID 4272 wrote to memory of 2300	4272	db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe	86
PID 4272 wrote to memory of 2300	4272	db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe	86
PID 2300 wrote to memory of 3196	2300	cmd.exe	88
PID 2300 wrote to memory of 3196	2300	cmd.exe	88
PID 2300 wrote to memory of 3196	2300	cmd.exe	88
PID 4272 wrote to memory of 2440	4272	db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe	89
PID 4272 wrote to memory of 2440	4272	db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe	89
PID 4272 wrote to memory of 2440	4272	db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe	89
PID 2440 wrote to memory of 408	2440	cmd.exe	91
PID 2440 wrote to memory of 408	2440	cmd.exe	91
PID 2440 wrote to memory of 408	2440	cmd.exe	91
PID 2440 wrote to memory of 2536	2440	cmd.exe	95
PID 2440 wrote to memory of 2536	2440	cmd.exe	95
PID 2440 wrote to memory of 2536	2440	cmd.exe	95
PID 2536 wrote to memory of 3972	2536	system32.exe	96
PID 2536 wrote to memory of 3972	2536	system32.exe	96
PID 2536 wrote to memory of 3972	2536	system32.exe	96
PID 2536 wrote to memory of 2112	2536	system32.exe	97
PID 2536 wrote to memory of 2112	2536	system32.exe	97
PID 2536 wrote to memory of 2112	2536	system32.exe	97
PID 3972 wrote to memory of 1592	3972	cmd.exe	99
PID 3972 wrote to memory of 1592	3972	cmd.exe	99
PID 3972 wrote to memory of 1592	3972	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\db01a90149095e26573ea6ccec5a68f8_JaffaCakes118.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4272
- C:\Windows\SysWOW64\cmd.exe
  /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2300
- - C:\Windows\SysWOW64\reg.exe
    C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
    3⤵
    - UAC bypass
    - System Location Discovery: System Language Discovery
    - Modifies registry key
    PID:3196
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2440
- - C:\Windows\SysWOW64\PING.EXE
    PING 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:408
- - C:\Users\Admin\AppData\Roaming\system32\system32.exe
    "C:\Users\Admin\AppData\Roaming\system32\system32.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2536
  - - C:\Windows\SysWOW64\cmd.exe
      /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3972
    - - C:\Windows\SysWOW64\reg.exe
        
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        5⤵
        UAC bypass
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:1592
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      PID:2112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.bat

Filesize
195B

MD5
3e7caab84ddf15a4c38691583a650511

SHA1
207d2ac34647565898613bcd1e9e31c59fa1abb7

SHA256
2d0eb97ccce9d79e90343084bb62158cee26903e1c297f17b05963a91593b41d

SHA512
1a7d5540a1571530359e643913beed4f49332208a9da23eaca0f20ed28b492874183ffb75f0a7f2fe4d83ec14ec8e29452165ac798b58960dcf16c03598772ae

Download Submit
C:\Users\Admin\AppData\Roaming\system32\system32.exe

Filesize
92KB

MD5
db01a90149095e26573ea6ccec5a68f8

SHA1
4561d246584a85b91b0e93f812a45b358a5080f2

SHA256
61df7ca0905ea6e9d63cb0f6cf9a1d2cb7b4feb201a0d67eb28ea7bb4af5d98d

SHA512
482cc4d84fd2e2704b2d3407700b70da893c51fd7848a594ac93dd7d0cb876d2d38b113968aba04b0cd3d8880f06116f8b1266e171bfd6e2b3db2c323e8466ca

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads