remcos | 7ad56c2211cf19c5e6cf7a25846eb21a67c59baa55644d3cd1a097cf4d734750

Analysis

max time kernel
150s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-09-2024 03:52

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General

Target

ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe
Size

453KB
MD5

ea88f63b1c26c1aefd1804ee475478ab
SHA1

526c70868c0fb9d11065d2f75f98e2c523907c92
SHA256

7ad56c2211cf19c5e6cf7a25846eb21a67c59baa55644d3cd1a097cf4d734750
SHA512

08df2bba1ce203baee82b5ca97a110d2d57597e8f3e2ec61c9a710e70a3752e11a9570e700716d3bb9facdf606a868871016c61ab6d5b4e04d79bcd0329e3bd3
SSDEEP

12288:/xd8PIcO+kOmZ2xd8PIcO+kOmZ9QVBQTBK8Yuv7J+:PMk+kbUMk+kbqVBSw8PJ+

Score

10^/10

remcos rich-fam1 defense_evasion discovery rat

Malware Config

Extracted

Family

remcos

Version

2.4.3 Pro

Botnet

Rich-Fam1

rich-fam1.strangled.net:6628

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
3
copy_file
remcos.exe
copy_folder
remcos
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
winlogs
keylog_path
%AppData%
mouse_option
false
mutex
iuytfdcuytf-OV62Q3
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

Drops startup file 6 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2712	audiodgc.exe
2364	audiodgc.exe

Loads dropped DLL 3 IoCs

pid	Process
2904	cmd.exe
2712	audiodgc.exe
2712	audiodgc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2712 set thread context of 2364	2712	audiodgc.exe	44

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\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe:Zone.Identifier	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_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 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	audiodgc.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	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.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\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe:Zone.Identifier	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe:Zone.Identifier	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe
Token: SeDebugPrivilege	2712	audiodgc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2364	audiodgc.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 3012	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	31
PID 2872 wrote to memory of 3012	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	31
PID 2872 wrote to memory of 3012	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	31
PID 2872 wrote to memory of 3012	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	31
PID 2872 wrote to memory of 1568	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	33
PID 2872 wrote to memory of 1568	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	33
PID 2872 wrote to memory of 1568	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	33
PID 2872 wrote to memory of 1568	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	33
PID 2872 wrote to memory of 2824	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	35
PID 2872 wrote to memory of 2824	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	35
PID 2872 wrote to memory of 2824	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	35
PID 2872 wrote to memory of 2824	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	35
PID 2872 wrote to memory of 2904	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	37
PID 2872 wrote to memory of 2904	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	37
PID 2872 wrote to memory of 2904	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	37
PID 2872 wrote to memory of 2904	2872	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	37
PID 2904 wrote to memory of 2712	2904	cmd.exe	39
PID 2904 wrote to memory of 2712	2904	cmd.exe	39
PID 2904 wrote to memory of 2712	2904	cmd.exe	39
PID 2904 wrote to memory of 2712	2904	cmd.exe	39
PID 2712 wrote to memory of 3064	2712	audiodgc.exe	40
PID 2712 wrote to memory of 3064	2712	audiodgc.exe	40
PID 2712 wrote to memory of 3064	2712	audiodgc.exe	40
PID 2712 wrote to memory of 3064	2712	audiodgc.exe	40
PID 2712 wrote to memory of 2416	2712	audiodgc.exe	42
PID 2712 wrote to memory of 2416	2712	audiodgc.exe	42
PID 2712 wrote to memory of 2416	2712	audiodgc.exe	42
PID 2712 wrote to memory of 2416	2712	audiodgc.exe	42
PID 2712 wrote to memory of 2364	2712	audiodgc.exe	44
PID 2712 wrote to memory of 2364	2712	audiodgc.exe	44
PID 2712 wrote to memory of 2364	2712	audiodgc.exe	44
PID 2712 wrote to memory of 2364	2712	audiodgc.exe	44
PID 2712 wrote to memory of 2364	2712	audiodgc.exe	44
PID 2712 wrote to memory of 2364	2712	audiodgc.exe	44
PID 2712 wrote to memory of 2364	2712	audiodgc.exe	44
PID 2712 wrote to memory of 2364	2712	audiodgc.exe	44
PID 2712 wrote to memory of 2364	2712	audiodgc.exe	44
PID 2712 wrote to memory of 2364	2712	audiodgc.exe	44
PID 2712 wrote to memory of 2364	2712	audiodgc.exe	44

C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe:Zone.Identifier"
  2⤵
  - Subvert Trust Controls: Mark-of-the-Web Bypass
  - System Location Discovery: System Language Discovery
  - NTFS ADS
  PID:3012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe:Zone.Identifier"
  2⤵
  - Subvert Trust Controls: Mark-of-the-Web Bypass
  - System Location Discovery: System Language Discovery
  - NTFS ADS
  PID:1568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe"
  2⤵
  - Drops startup file
  - System Location Discovery: System Language Discovery
  PID:2824
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2904
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2712
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe:Zone.Identifier"
      4⤵
      Drops startup file
      System Location Discovery: System Language Discovery
      PID:3064
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe:Zone.Identifier"
      4⤵
      Drops startup file
      System Location Discovery: System Language Discovery
      PID:2416
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetWindowsHookEx
      PID:2364

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
453KB

MD5
ea88f63b1c26c1aefd1804ee475478ab

SHA1
526c70868c0fb9d11065d2f75f98e2c523907c92

SHA256
7ad56c2211cf19c5e6cf7a25846eb21a67c59baa55644d3cd1a097cf4d734750

SHA512
08df2bba1ce203baee82b5ca97a110d2d57597e8f3e2ec61c9a710e70a3752e11a9570e700716d3bb9facdf606a868871016c61ab6d5b4e04d79bcd0329e3bd3

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

Filesize
79B

MD5
5f71a88c295b612b7ecf6b1e2a64c604

SHA1
3acc76069feccfd436dd65f075a06d7f08b17fe5

SHA256
d133b904487b07e56085176499f1f7e31435f048b26ec059509ffde9fa2b1794

SHA512
efa4c53c5d79888663422793e51290394dc1420318b1b89d6f48ed75c54de6c33c81b0c13b38833503d02ec3ffaf444bc0dcd68f66bebd807d89d31f98171dce

Download Submit
memory/2364-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2364-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2364-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2364-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2364-39-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2364-37-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2364-35-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2364-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2364-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2364-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2364-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2712-18-0x0000000004850000-0x000000000485C000-memory.dmp

Filesize
48KB

Download
memory/2712-15-0x0000000000ED0000-0x0000000000F48000-memory.dmp

Filesize
480KB

Download
memory/2872-4-0x0000000074CB0000-0x000000007539E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-3-0x0000000000540000-0x000000000056A000-memory.dmp

Filesize
168KB

Download
memory/2872-1-0x0000000001150000-0x00000000011C8000-memory.dmp

Filesize
480KB

Download
memory/2872-0-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/2872-2-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/2872-11-0x0000000074CB0000-0x000000007539E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-7-0x0000000074CB0000-0x000000007539E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-6-0x0000000000BE0000-0x0000000000BEC000-memory.dmp

Filesize
48KB

Download
memory/2872-5-0x0000000000BD0000-0x0000000000BD8000-memory.dmp

Filesize
32KB

Download