remcos | b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c

General

Target

JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
Size

562KB
MD5

f34a430619e5668615cb3ada04be4216
SHA1

9c1113c380db483ceb5efc712e7179cace0fefe3
SHA256

b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c
SHA512

18218a0537eec400cd414b00fcdbc21c7edd8ac39139407fac4f872fec7309da391ec69249d947d9a92e8410e3d0477c57a029a9b3ae771eaeeaa80dd445592c
SSDEEP

12288:FEIS3A/ps/uSaSXO9bZMEp+CGE8eGaOko2vaR:FZS3AVj9np+CSey2va

Score

10^/10

remcos newyear discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

NEWYEAR

C2

cato.fingusti.club:6609

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-VHEUO4
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
take_screenshot_title
wikipedia;solitaire;

Signatures

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

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe

Executes dropped EXE 2 IoCs

pid	Process
4812	Startup.exe
812	Startup.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\up = "C:\\Program Files (x86)\\Startup.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4812 set thread context of 812	4812	Startup.exe	100

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Startup.exe	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
File created	C:\Program Files (x86)\Startup.exe	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.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 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	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.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	Startup.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
4812	Startup.exe
4812	Startup.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
Token: SeDebugPrivilege	4812	Startup.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
812	Startup.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 5084	4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe	83
PID 4928 wrote to memory of 5084	4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe	83
PID 4928 wrote to memory of 5084	4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe	83
PID 5084 wrote to memory of 4796	5084	cmd.exe	85
PID 5084 wrote to memory of 4796	5084	cmd.exe	85
PID 5084 wrote to memory of 4796	5084	cmd.exe	85
PID 4928 wrote to memory of 4812	4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe	93
PID 4928 wrote to memory of 4812	4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe	93
PID 4928 wrote to memory of 4812	4928	JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe	93
PID 4812 wrote to memory of 812	4812	Startup.exe	100
PID 4812 wrote to memory of 812	4812	Startup.exe	100
PID 4812 wrote to memory of 812	4812	Startup.exe	100
PID 4812 wrote to memory of 812	4812	Startup.exe	100
PID 4812 wrote to memory of 812	4812	Startup.exe	100
PID 4812 wrote to memory of 812	4812	Startup.exe	100
PID 4812 wrote to memory of 812	4812	Startup.exe	100
PID 4812 wrote to memory of 812	4812	Startup.exe	100
PID 4812 wrote to memory of 812	4812	Startup.exe	100
PID 4812 wrote to memory of 812	4812	Startup.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "up" /t REG_SZ /d "C:\Program Files (x86)\Startup.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5084
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "up" /t REG_SZ /d "C:\Program Files (x86)\Startup.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:4796
- C:\Program Files (x86)\Startup.exe
  "C:\Program Files (x86)\Startup.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4812
- - C:\Program Files (x86)\Startup.exe
    "C:\Program Files (x86)\Startup.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:812

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

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

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

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Downloads

C:\Program Files (x86)\Startup.exe

Filesize
562KB

MD5
f34a430619e5668615cb3ada04be4216

SHA1
9c1113c380db483ceb5efc712e7179cace0fefe3

SHA256
b584bd384f721c35557bf7acc7bb9c789d74804da8b8dbb3fd7c39586571cb1c

SHA512
18218a0537eec400cd414b00fcdbc21c7edd8ac39139407fac4f872fec7309da391ec69249d947d9a92e8410e3d0477c57a029a9b3ae771eaeeaa80dd445592c

Download Submit
C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
74B

MD5
ded3509889fc7b2c06d835064a67feaf

SHA1
54a2d31acff96951d8cb9e78a83b4a7e230489ca

SHA256
14d0375191b331ad0897a020d89579003f4e267877b835382274bc0d6a570e48

SHA512
c871da56a219899a566642b282ded079912950054d6706a2ebf1e1cf91b84350b57f9b329e97619d1018979f82667009a59006ae6f18330586583d9aa32d7452

Download Submit
memory/812-32-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/812-41-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/812-29-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/812-38-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/812-36-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/812-33-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4812-37-0x0000000074CC0000-0x0000000075470000-memory.dmp

Filesize
7.7MB

Download
memory/4812-27-0x00000000081E0000-0x00000000081F4000-memory.dmp

Filesize
80KB

Download
memory/4812-39-0x0000000074CC0000-0x0000000075470000-memory.dmp

Filesize
7.7MB

Download
memory/4812-22-0x0000000074CC0000-0x0000000075470000-memory.dmp

Filesize
7.7MB

Download
memory/4812-28-0x000000000A200000-0x000000000A206000-memory.dmp

Filesize
24KB

Download
memory/4812-24-0x0000000004D90000-0x0000000004DB6000-memory.dmp

Filesize
152KB

Download
memory/4812-25-0x0000000074CC0000-0x0000000075470000-memory.dmp

Filesize
7.7MB

Download
memory/4812-26-0x0000000074CC0000-0x0000000075470000-memory.dmp

Filesize
7.7MB

Download
memory/4928-6-0x0000000008370000-0x0000000008402000-memory.dmp

Filesize
584KB

Download
memory/4928-23-0x0000000074CC0000-0x0000000075470000-memory.dmp

Filesize
7.7MB

Download
memory/4928-10-0x0000000074CC0000-0x0000000075470000-memory.dmp

Filesize
7.7MB

Download
memory/4928-9-0x0000000074CCE000-0x0000000074CCF000-memory.dmp

Filesize
4KB

Download
memory/4928-7-0x0000000074CC0000-0x0000000075470000-memory.dmp

Filesize
7.7MB

Download
memory/4928-0-0x0000000074CCE000-0x0000000074CCF000-memory.dmp

Filesize
4KB

Download
memory/4928-5-0x0000000005A20000-0x0000000005A26000-memory.dmp

Filesize
24KB

Download
memory/4928-4-0x0000000005900000-0x0000000005926000-memory.dmp

Filesize
152KB

Download
memory/4928-3-0x0000000074CC0000-0x0000000075470000-memory.dmp

Filesize
7.7MB

Download
memory/4928-2-0x0000000005980000-0x0000000005A1C000-memory.dmp

Filesize
624KB

Download
memory/4928-1-0x0000000000F70000-0x0000000001000000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads