remcos | 39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
13/11/2024, 09:39

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General

Target

QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
Size

1.3MB
MD5

5c44a72a49fe4fbc94f1c1aa8cbf0ab6
SHA1

d0d0903f73b4aa11ee580fb6fd8d80775e6e88de
SHA256

39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129
SHA512

d92503e2ebbaa4e8728098cf6d0079de711a4f92663ad9db8583d848721818e4ecf3790a65253a0cd850c23eed8a46f98049a11f77b9f106344e501d124fbb97
SSDEEP

24576:ctcKivRdWnSyEHyfE75BP/+mgWdm/bTLLK6:LKmXWSy6r2mgxv

Score

10^/10

remcos slaves collection discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

SLAVES

windowslavesclient.duckdns.org:1604

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-J3MJAP
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Detected Nirsoft tools 3 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral1/memory/812-48-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2256-53-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1528-54-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2256-53-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/812-48-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Executes dropped EXE 1 IoCs

pid	Process
2924	Images.exe

Loads dropped DLL 2 IoCs

pid	Process
2652	cmd.exe
2652	cmd.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	AddInProcess32.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Videoss = "C:\\Users\\Admin\\AppData\\Roaming\\Images.exe"	reg.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2924 set thread context of 1140	2924	Images.exe	40
PID 1140 set thread context of 812	1140	AddInProcess32.exe	41
PID 1140 set thread context of 2256	1140	AddInProcess32.exe	42
PID 1140 set thread context of 1528	1140	AddInProcess32.exe	43

System Location Discovery: System Language Discovery 1 TTPs 12 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	Images.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.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
3060	cmd.exe
3032	PING.EXE
2652	cmd.exe
2732	PING.EXE
1980	PING.EXE

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
2732	PING.EXE
1980	PING.EXE
3032	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
2924	Images.exe
2924	Images.exe
2924	Images.exe
812	AddInProcess32.exe
812	AddInProcess32.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1140	AddInProcess32.exe
1140	AddInProcess32.exe
1140	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
Token: SeDebugPrivilege	2924	Images.exe
Token: SeDebugPrivilege	1528	AddInProcess32.exe

Suspicious use of WriteProcessMemory 54 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 3060	1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe	30
PID 1680 wrote to memory of 3060	1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe	30
PID 1680 wrote to memory of 3060	1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe	30
PID 1680 wrote to memory of 3060	1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe	30
PID 3060 wrote to memory of 3032	3060	cmd.exe	32
PID 3060 wrote to memory of 3032	3060	cmd.exe	32
PID 3060 wrote to memory of 3032	3060	cmd.exe	32
PID 3060 wrote to memory of 3032	3060	cmd.exe	32
PID 1680 wrote to memory of 2652	1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe	33
PID 1680 wrote to memory of 2652	1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe	33
PID 1680 wrote to memory of 2652	1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe	33
PID 1680 wrote to memory of 2652	1680	QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe	33
PID 2652 wrote to memory of 2732	2652	cmd.exe	35
PID 2652 wrote to memory of 2732	2652	cmd.exe	35
PID 2652 wrote to memory of 2732	2652	cmd.exe	35
PID 2652 wrote to memory of 2732	2652	cmd.exe	35
PID 3060 wrote to memory of 2836	3060	cmd.exe	36
PID 3060 wrote to memory of 2836	3060	cmd.exe	36
PID 3060 wrote to memory of 2836	3060	cmd.exe	36
PID 3060 wrote to memory of 2836	3060	cmd.exe	36
PID 2652 wrote to memory of 1980	2652	cmd.exe	37
PID 2652 wrote to memory of 1980	2652	cmd.exe	37
PID 2652 wrote to memory of 1980	2652	cmd.exe	37
PID 2652 wrote to memory of 1980	2652	cmd.exe	37
PID 2652 wrote to memory of 2924	2652	cmd.exe	39
PID 2652 wrote to memory of 2924	2652	cmd.exe	39
PID 2652 wrote to memory of 2924	2652	cmd.exe	39
PID 2652 wrote to memory of 2924	2652	cmd.exe	39
PID 2924 wrote to memory of 1140	2924	Images.exe	40
PID 2924 wrote to memory of 1140	2924	Images.exe	40
PID 2924 wrote to memory of 1140	2924	Images.exe	40
PID 2924 wrote to memory of 1140	2924	Images.exe	40
PID 2924 wrote to memory of 1140	2924	Images.exe	40
PID 2924 wrote to memory of 1140	2924	Images.exe	40
PID 2924 wrote to memory of 1140	2924	Images.exe	40
PID 2924 wrote to memory of 1140	2924	Images.exe	40
PID 2924 wrote to memory of 1140	2924	Images.exe	40
PID 2924 wrote to memory of 1140	2924	Images.exe	40
PID 2924 wrote to memory of 1140	2924	Images.exe	40
PID 1140 wrote to memory of 812	1140	AddInProcess32.exe	41
PID 1140 wrote to memory of 812	1140	AddInProcess32.exe	41
PID 1140 wrote to memory of 812	1140	AddInProcess32.exe	41
PID 1140 wrote to memory of 812	1140	AddInProcess32.exe	41
PID 1140 wrote to memory of 812	1140	AddInProcess32.exe	41
PID 1140 wrote to memory of 2256	1140	AddInProcess32.exe	42
PID 1140 wrote to memory of 2256	1140	AddInProcess32.exe	42
PID 1140 wrote to memory of 2256	1140	AddInProcess32.exe	42
PID 1140 wrote to memory of 2256	1140	AddInProcess32.exe	42
PID 1140 wrote to memory of 2256	1140	AddInProcess32.exe	42
PID 1140 wrote to memory of 1528	1140	AddInProcess32.exe	43
PID 1140 wrote to memory of 1528	1140	AddInProcess32.exe	43
PID 1140 wrote to memory of 1528	1140	AddInProcess32.exe	43
PID 1140 wrote to memory of 1528	1140	AddInProcess32.exe	43
PID 1140 wrote to memory of 1528	1140	AddInProcess32.exe	43

C:\Users\Admin\AppData\Local\Temp\QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 17 > nul && REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Videoss" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Images.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3060
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 17
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3032
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Videoss" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Images.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2836
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 29 > nul && copy "C:\Users\Admin\AppData\Local\Temp\QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe" "C:\Users\Admin\AppData\Roaming\Images.exe" && ping 127.0.0.1 -n 29 > nul && "C:\Users\Admin\AppData\Roaming\Images.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2652
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 29
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2732
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 29
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1980
- - C:\Users\Admin\AppData\Roaming\Images.exe
    "C:\Users\Admin\AppData\Roaming\Images.exe"
    3⤵
    - 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:2924
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:1140
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\aeyezntlgymirkvkbld"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:812
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\cydwafdeugfntyjolvqgle"
        5⤵
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:2256
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\nbjpbyogioxsdffsugcznjuvqe"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:1528

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

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\aeyezntlgymirkvkbld

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\Users\Admin\AppData\Roaming\Images.exe

Filesize
1.3MB

MD5
5c44a72a49fe4fbc94f1c1aa8cbf0ab6

SHA1
d0d0903f73b4aa11ee580fb6fd8d80775e6e88de

SHA256
39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129

SHA512
d92503e2ebbaa4e8728098cf6d0079de711a4f92663ad9db8583d848721818e4ecf3790a65253a0cd850c23eed8a46f98049a11f77b9f106344e501d124fbb97

Download Submit
memory/812-45-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/812-48-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/812-44-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1140-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1140-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-63-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1140-64-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1140-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-60-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1140-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1140-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1528-50-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1528-52-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1528-51-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1528-54-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1680-0-0x0000000073F6E000-0x0000000073F6F000-memory.dmp

Filesize
4KB

Download
memory/1680-6-0x0000000073F60000-0x000000007464E000-memory.dmp

Filesize
6.9MB

Download
memory/1680-5-0x0000000073F60000-0x000000007464E000-memory.dmp

Filesize
6.9MB

Download
memory/1680-4-0x0000000073F6E000-0x0000000073F6F000-memory.dmp

Filesize
4KB

Download
memory/1680-3-0x0000000073F60000-0x000000007464E000-memory.dmp

Filesize
6.9MB

Download
memory/1680-2-0x0000000000450000-0x0000000000494000-memory.dmp

Filesize
272KB

Download
memory/1680-1-0x0000000000FF0000-0x0000000001136000-memory.dmp

Filesize
1.3MB

Download
memory/2256-49-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2256-47-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2256-53-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2924-19-0x0000000000B70000-0x0000000000B76000-memory.dmp

Filesize
24KB

Download
memory/2924-17-0x0000000001120000-0x0000000001266000-memory.dmp

Filesize
1.3MB

Download
memory/2924-18-0x0000000000800000-0x000000000081A000-memory.dmp

Filesize
104KB

Download