remcos | b6944ddaf0cf7f8e1540e7847027b763d37feda938359099296fe51442a7ebdd

General

Target

eventlog.exe
Size

469KB
MD5

24694b1aa8dc1173a9a1877701736010
SHA1

dc45ca0241af5090baedfc94513a8235f5804467
SHA256

b6944ddaf0cf7f8e1540e7847027b763d37feda938359099296fe51442a7ebdd
SHA512

b4ba86f47fa3a9eef04a7cb4ee2b784bdb419fb5c049039b93b767279b96e0e3af59e5ab8ff143ac979ead3cdd42eac592439c00620e337515b2fe0c80f0e95c
SSDEEP

12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQShn9:uiLJbpI7I2WhQqZ7h9

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

204.10.194.175:4444

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
allahtools.exe
copy_folder
Remcos
delete_file
true
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-5TVP5I
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
phishontop
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

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	allahtools.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\phishontop = "\"C:\\ProgramData\\Remcos\\allahtools.exe\""	allahtools.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	eventlog.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\phishontop = "\"C:\\ProgramData\\Remcos\\allahtools.exe\""	eventlog.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	eventlog.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	WScript.exe

Deletes itself 1 IoCs

pid	Process
3124	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
3084	allahtools.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\phishontop = "\"C:\\ProgramData\\Remcos\\allahtools.exe\""	eventlog.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\phishontop = "\"C:\\ProgramData\\Remcos\\allahtools.exe\""	eventlog.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\phishontop = "\"C:\\ProgramData\\Remcos\\allahtools.exe\""	allahtools.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\phishontop = "\"C:\\ProgramData\\Remcos\\allahtools.exe\""	allahtools.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3084 set thread context of 4940	3084	allahtools.exe	86

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 4 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	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	allahtools.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eventlog.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000_Classes\Local Settings	eventlog.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3084	allahtools.exe
3084	allahtools.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3084	allahtools.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 5052 wrote to memory of 3124	5052	eventlog.exe	82
PID 5052 wrote to memory of 3124	5052	eventlog.exe	82
PID 5052 wrote to memory of 3124	5052	eventlog.exe	82
PID 3124 wrote to memory of 1428	3124	WScript.exe	83
PID 3124 wrote to memory of 1428	3124	WScript.exe	83
PID 3124 wrote to memory of 1428	3124	WScript.exe	83
PID 1428 wrote to memory of 3084	1428	cmd.exe	85
PID 1428 wrote to memory of 3084	1428	cmd.exe	85
PID 1428 wrote to memory of 3084	1428	cmd.exe	85
PID 3084 wrote to memory of 4940	3084	allahtools.exe	86
PID 3084 wrote to memory of 4940	3084	allahtools.exe	86
PID 3084 wrote to memory of 4940	3084	allahtools.exe	86
PID 3084 wrote to memory of 4940	3084	allahtools.exe	86

C:\Users\Admin\AppData\Local\Temp\eventlog.exe
"C:\Users\Admin\AppData\Local\Temp\eventlog.exe"
1⤵
- Adds policy Run key to start application
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5052
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Checks computer location settings
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3124
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\Remcos\allahtools.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1428
  - - C:\ProgramData\Remcos\allahtools.exe
      C:\ProgramData\Remcos\allahtools.exe
      4⤵
      Adds policy Run key to start application
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:3084
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        
        PID:4940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\Remcos\allahtools.exe

Filesize
469KB

MD5
24694b1aa8dc1173a9a1877701736010

SHA1
dc45ca0241af5090baedfc94513a8235f5804467

SHA256
b6944ddaf0cf7f8e1540e7847027b763d37feda938359099296fe51442a7ebdd

SHA512
b4ba86f47fa3a9eef04a7cb4ee2b784bdb419fb5c049039b93b767279b96e0e3af59e5ab8ff143ac979ead3cdd42eac592439c00620e337515b2fe0c80f0e95c

Download Submit
C:\Users\Admin\AppData\Local\Temp\install.vbs

Filesize
522B

MD5
f5d0fd7af0d632ead387e703f2ea43c1

SHA1
d406f10483e26796c400b8d06c12e32d9b78fe7e

SHA256
fdb112e0437d2cbcf56c302c16e63627eeb8e8e90d5a38f4760092a337f544d5

SHA512
d329d569bb7bf13b983ff50ab4e5934b08eb794f6aed842d931de5bc1e5fa81c1b0f3ec36be157238c8d1dd5486e6ed893bceada99344e1bf4094a488ffa6ec3

Download Submit
memory/4940-8-0x0000000000550000-0x00000000005CF000-memory.dmp

Filesize
508KB

Download
memory/4940-10-0x0000000000550000-0x00000000005CF000-memory.dmp

Filesize
508KB

Download
memory/4940-11-0x0000000000550000-0x00000000005CF000-memory.dmp

Filesize
508KB

Download
memory/4940-9-0x0000000000550000-0x00000000005CF000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads