remcos | b6303200103a2850024a8fa44653b37d9eae9d3b5586c85e37fa2396f76e5b45

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-09-2024 13:57

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General

Target

f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe
Size

457KB
MD5

f884c48291efc94056ebd12a6c452bca
SHA1

6a14e335110ee2df1811467533d03bee4f16b30c
SHA256

b6303200103a2850024a8fa44653b37d9eae9d3b5586c85e37fa2396f76e5b45
SHA512

b3683b54bf9b0d9722c961b3e154a537cc9e971cac71ffa21efdc1e5a53cfb6dca0f5e374ac03ee23f659cab0ce20e70333d12d937ed1a72f0ab046d9beb28bc
SSDEEP

12288:vxd8PIcO+kOmZ2xd8PIcO+kOmZ6PzWDuS0s4aJ1Txm7g:/Mk+kbUMk+kbQiiFaTA

Score

10^/10

remcos cashoutrtd 2019 defense_evasion discovery rat

Malware Config

Extracted

Family

remcos

Version

2.4.3 Pro

Botnet

cashoutRTD 2019

cashout2018.ddnss.de:2018

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
dmw.exe
copy_folder
dmw
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
winloga
keylog_path
%AppData%
mouse_option
false
mutex
uytrrtyu-NJTBCR
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
dmw
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	audiodgcg.exe

Drops startup file 6 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe	cmd.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe\:Zone.Identifier:$DATA	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe:Zone.Identifier	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe:Zone.Identifier	cmd.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.lnk	audiodgcg.exe

Executes dropped EXE 2 IoCs

pid	Process
1740	audiodgcg.exe
4976	audiodgcg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1740 set thread context of 4976	1740	audiodgcg.exe	104

Subvert Trust Controls: Mark-of-the-Web Bypass 1 TTPs 2 IoCs

When files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named Zone.Identifier with a specific value known as the MOTW.

defense_evasion

SIP and Trust Provider Hijacking

T1553.003

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe:Zone.Identifier	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Local\Temp\f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe:Zone.Identifier	cmd.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 9 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	audiodgcg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	audiodgcg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

NTFS ADS 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe:Zone.Identifier	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Local\Temp\f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe:Zone.Identifier	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe
Token: SeDebugPrivilege	1740	audiodgcg.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4976	audiodgcg.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 3536 wrote to memory of 4152	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	87
PID 3536 wrote to memory of 4152	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	87
PID 3536 wrote to memory of 4152	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	87
PID 3536 wrote to memory of 1044	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	89
PID 3536 wrote to memory of 1044	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	89
PID 3536 wrote to memory of 1044	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	89
PID 3536 wrote to memory of 3720	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	93
PID 3536 wrote to memory of 3720	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	93
PID 3536 wrote to memory of 3720	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	93
PID 3536 wrote to memory of 3268	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	96
PID 3536 wrote to memory of 3268	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	96
PID 3536 wrote to memory of 3268	3536	f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe	96
PID 3268 wrote to memory of 1740	3268	cmd.exe	98
PID 3268 wrote to memory of 1740	3268	cmd.exe	98
PID 3268 wrote to memory of 1740	3268	cmd.exe	98
PID 1740 wrote to memory of 436	1740	audiodgcg.exe	100
PID 1740 wrote to memory of 436	1740	audiodgcg.exe	100
PID 1740 wrote to memory of 436	1740	audiodgcg.exe	100
PID 1740 wrote to memory of 1548	1740	audiodgcg.exe	102
PID 1740 wrote to memory of 1548	1740	audiodgcg.exe	102
PID 1740 wrote to memory of 1548	1740	audiodgcg.exe	102
PID 1740 wrote to memory of 4976	1740	audiodgcg.exe	104
PID 1740 wrote to memory of 4976	1740	audiodgcg.exe	104
PID 1740 wrote to memory of 4976	1740	audiodgcg.exe	104
PID 1740 wrote to memory of 4976	1740	audiodgcg.exe	104
PID 1740 wrote to memory of 4976	1740	audiodgcg.exe	104
PID 1740 wrote to memory of 4976	1740	audiodgcg.exe	104
PID 1740 wrote to memory of 4976	1740	audiodgcg.exe	104
PID 1740 wrote to memory of 4976	1740	audiodgcg.exe	104
PID 1740 wrote to memory of 4976	1740	audiodgcg.exe	104
PID 1740 wrote to memory of 4976	1740	audiodgcg.exe	104

C:\Users\Admin\AppData\Local\Temp\f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3536
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\Temp\f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe:Zone.Identifier"
  2⤵
  - Subvert Trust Controls: Mark-of-the-Web Bypass
  - System Location Discovery: System Language Discovery
  - NTFS ADS
  PID:4152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\Temp\f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe:Zone.Identifier"
  2⤵
  - Subvert Trust Controls: Mark-of-the-Web Bypass
  - System Location Discovery: System Language Discovery
  - NTFS ADS
  PID:1044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\f884c48291efc94056ebd12a6c452bca_JaffaCakes118.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe"
  2⤵
  - Drops startup file
  - System Location Discovery: System Language Discovery
  PID:3720
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3268
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe"
    3⤵
    - Checks computer location settings
    - Drops startup file
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1740
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe:Zone.Identifier"
      4⤵
      Drops startup file
      System Location Discovery: System Language Discovery
      PID:436
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe:Zone.Identifier"
      4⤵
      Drops startup file
      System Location Discovery: System Language Discovery
      PID:1548
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:4976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Subvert Trust Controls

T1553

SIP and Trust Provider Hijacking

T1553.003

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgcg.exe

Filesize
457KB

MD5
f884c48291efc94056ebd12a6c452bca

SHA1
6a14e335110ee2df1811467533d03bee4f16b30c

SHA256
b6303200103a2850024a8fa44653b37d9eae9d3b5586c85e37fa2396f76e5b45

SHA512
b3683b54bf9b0d9722c961b3e154a537cc9e971cac71ffa21efdc1e5a53cfb6dca0f5e374ac03ee23f659cab0ce20e70333d12d937ed1a72f0ab046d9beb28bc

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

Filesize
79B

MD5
ca0b08f34fe43109bc9c5c9300f14f3b

SHA1
65ee83f0fa5d7bf7c9e797a51da289f23dcf3fef

SHA256
38ba75f7e783ddcc59e73914cdb7c9772a2c8bb50f7098d087497d60a7952bdd

SHA512
47264c2c6e37178998723a5bfe0d87e3b2cc5940f64d5d87be7a682557a9c9b04b0a379ce5514e788663f933fd571984dd952e66795a48d46a3e2b63dd8e5a2f

Download Submit
memory/1740-36-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/1740-27-0x00000000071B0000-0x000000000724C000-memory.dmp

Filesize
624KB

Download
memory/1740-26-0x00000000070F0000-0x00000000070FC000-memory.dmp

Filesize
48KB

Download
memory/1740-24-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/1740-23-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/1740-22-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/1740-21-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/3536-6-0x00000000064A0000-0x0000000006506000-memory.dmp

Filesize
408KB

Download
memory/3536-5-0x0000000005D80000-0x0000000005DAA000-memory.dmp

Filesize
168KB

Download
memory/3536-11-0x00000000069B0000-0x00000000069BC000-memory.dmp

Filesize
48KB

Download
memory/3536-12-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/3536-17-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/3536-9-0x0000000006BA0000-0x0000000006D62000-memory.dmp

Filesize
1.8MB

Download
memory/3536-8-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/3536-7-0x0000000005E70000-0x0000000005E92000-memory.dmp

Filesize
136KB

Download
memory/3536-0-0x000000007503E000-0x000000007503F000-memory.dmp

Filesize
4KB

Download
memory/3536-10-0x00000000069C0000-0x00000000069C8000-memory.dmp

Filesize
32KB

Download
memory/3536-4-0x000000007503E000-0x000000007503F000-memory.dmp

Filesize
4KB

Download
memory/3536-3-0x00000000059E0000-0x0000000005A72000-memory.dmp

Filesize
584KB

Download
memory/3536-1-0x0000000000F40000-0x0000000000FB8000-memory.dmp

Filesize
480KB

Download
memory/3536-2-0x0000000005EF0000-0x0000000006494000-memory.dmp

Filesize
5.6MB

Download
memory/4976-32-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4976-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4976-35-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4976-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download