remcos | e1556a64a38cbd56c8264681b8afe29a667ff16f8c3b99ef935525371a14feac

Analysis

max time kernel
143s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 09:34

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General

Target

payment slip..exe
Size

1.1MB
MD5

87b1f43499fb88d1971cf2eaf8409cf5
SHA1

65013ee9162f40b51049c81f0d5ab8c7971f2ba8
SHA256

ae5c7c5f680e962071211f744fac2af5ad9a508ffe60f4bd747e885f017fbeae
SHA512

4c3e45ddcba1fc08fd250ba37b02cf50ad0259cea0c1177955de5346838fae30ddd16a37abf5c4d3a90bd4ed9f083debb860e1147c1dbe3564846e21e817c28c
SSDEEP

24576:8zcj2wPT+b1WEHsOzj4j85M1hUQDAxzJX4cJeZ:4Av411sOzj4jGM1aK4FX

Score

10^/10

remcos wire 18/12 discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

wire 18/12

teebro1800.dynamic-dns.net:2195

teewire.ydns.eu:2195

Attributes

audio_folder
MicRecords
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-X4SWKO
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
Remcos family
remcos

Executes dropped EXE 1 IoCs

pid	Process
3064	chrome.exe

Loads dropped DLL 2 IoCs

pid	Process
2620	cmd.exe
2620	cmd.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\chrome = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\chrome.exe"	reg.exe

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	chrome.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	payment slip..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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 5 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2012	PING.EXE
2620	cmd.exe
2592	PING.EXE
612	PING.EXE
2760	cmd.exe

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
2012	PING.EXE
2592	PING.EXE
612	PING.EXE

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2636	payment slip..exe
2636	payment slip..exe
2636	payment slip..exe
2636	payment slip..exe
2636	payment slip..exe
2636	payment slip..exe
3064	chrome.exe
3064	chrome.exe
3064	chrome.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2636	payment slip..exe
Token: SeDebugPrivilege	3064	chrome.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 2760	2636	payment slip..exe	30
PID 2636 wrote to memory of 2760	2636	payment slip..exe	30
PID 2636 wrote to memory of 2760	2636	payment slip..exe	30
PID 2636 wrote to memory of 2760	2636	payment slip..exe	30
PID 2760 wrote to memory of 2012	2760	cmd.exe	32
PID 2760 wrote to memory of 2012	2760	cmd.exe	32
PID 2760 wrote to memory of 2012	2760	cmd.exe	32
PID 2760 wrote to memory of 2012	2760	cmd.exe	32
PID 2636 wrote to memory of 2620	2636	payment slip..exe	34
PID 2636 wrote to memory of 2620	2636	payment slip..exe	34
PID 2636 wrote to memory of 2620	2636	payment slip..exe	34
PID 2636 wrote to memory of 2620	2636	payment slip..exe	34
PID 2620 wrote to memory of 2592	2620	cmd.exe	36
PID 2620 wrote to memory of 2592	2620	cmd.exe	36
PID 2620 wrote to memory of 2592	2620	cmd.exe	36
PID 2620 wrote to memory of 2592	2620	cmd.exe	36
PID 2760 wrote to memory of 2804	2760	cmd.exe	37
PID 2760 wrote to memory of 2804	2760	cmd.exe	37
PID 2760 wrote to memory of 2804	2760	cmd.exe	37
PID 2760 wrote to memory of 2804	2760	cmd.exe	37
PID 2620 wrote to memory of 612	2620	cmd.exe	38
PID 2620 wrote to memory of 612	2620	cmd.exe	38
PID 2620 wrote to memory of 612	2620	cmd.exe	38
PID 2620 wrote to memory of 612	2620	cmd.exe	38
PID 2620 wrote to memory of 3064	2620	cmd.exe	39
PID 2620 wrote to memory of 3064	2620	cmd.exe	39
PID 2620 wrote to memory of 3064	2620	cmd.exe	39
PID 2620 wrote to memory of 3064	2620	cmd.exe	39
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40
PID 3064 wrote to memory of 2792	3064	chrome.exe	40

C:\Users\Admin\AppData\Local\Temp\payment slip..exe
"C:\Users\Admin\AppData\Local\Temp\payment slip..exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 38 > nul && REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "chrome" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chrome.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 38
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2012
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "chrome" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chrome.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2804
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 39 > nul && copy "C:\Users\Admin\AppData\Local\Temp\payment slip..exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chrome.exe" && ping 127.0.0.1 -n 39 > nul && "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chrome.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2620
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 39
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2592
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 39
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:612
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chrome.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chrome.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3064
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      PID:2792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\chrome.exe

Filesize
1.1MB

MD5
87b1f43499fb88d1971cf2eaf8409cf5

SHA1
65013ee9162f40b51049c81f0d5ab8c7971f2ba8

SHA256
ae5c7c5f680e962071211f744fac2af5ad9a508ffe60f4bd747e885f017fbeae

SHA512
4c3e45ddcba1fc08fd250ba37b02cf50ad0259cea0c1177955de5346838fae30ddd16a37abf5c4d3a90bd4ed9f083debb860e1147c1dbe3564846e21e817c28c

Download Submit
memory/2636-0-0x000000007442E000-0x000000007442F000-memory.dmp

Filesize
4KB

Download
memory/2636-1-0x00000000000C0000-0x00000000001D6000-memory.dmp

Filesize
1.1MB

Download
memory/2636-2-0x0000000002230000-0x0000000002272000-memory.dmp

Filesize
264KB

Download
memory/2636-3-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download
memory/2636-4-0x000000007442E000-0x000000007442F000-memory.dmp

Filesize
4KB

Download
memory/2636-5-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download
memory/2636-6-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download
memory/2792-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2792-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3064-18-0x0000000000430000-0x000000000044A000-memory.dmp

Filesize
104KB

Download
memory/3064-19-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/3064-17-0x0000000000080000-0x0000000000196000-memory.dmp

Filesize
1.1MB

Download