remcos | 83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09/10/2024, 01:56

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General

Target

83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe
Size

1.6MB
MD5

2e58a14f3a8d78298aee99cb4ea39adc
SHA1

90c96e8671f739a0a20daaafab1567d3c457a612
SHA256

83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344
SHA512

71f115edb7c4013458f957473aa943a910d509f2a94b0ab6e57e84d13e458c17571702830a3eb7cf9e784e52ff1c986e35088a7ce7ab094c48f818d2a7fa6a5d
SSDEEP

24576:ffmMv6Ckr7Mny5QLH0yTfIXPlFb2wjVkwAE9owb7uVJnIJYKR3prW4BoPEK8X3PR:f3v+7/5QLVYdkQ99b7ujIJjixkyKi87

Score

10^/10

remcos remotehost collection discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

www.projectusf.com:2404

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
gfh
mouse_option
false
mutex
Rmc-J91LMC
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

Detected Nirsoft tools 3 IoCs

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

resource	yara_rule
behavioral2/memory/4480-37-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/768-40-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1836-39-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1836-39-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/768-40-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Quotes.vbs	Quotes.exe

Executes dropped EXE 2 IoCs

pid	Process
1796	Quotes.exe
3180	Quotes.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000b000000023b67-5.dat	autoit_exe
behavioral2/memory/3180-16-0x00000000040D0000-0x00000000044D0000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3180 set thread context of 1260	3180	Quotes.exe	89
PID 1260 set thread context of 768	1260	svchost.exe	90
PID 1260 set thread context of 1836	1260	svchost.exe	91
PID 1260 set thread context of 4480	1260	svchost.exe	92

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 7 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	Quotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4480	svchost.exe
4480	svchost.exe
768	svchost.exe
768	svchost.exe
768	svchost.exe
768	svchost.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1796	Quotes.exe
3180	Quotes.exe
1260	svchost.exe
1260	svchost.exe
1260	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4480	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1260	svchost.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3168 wrote to memory of 1796	3168	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe	86
PID 3168 wrote to memory of 1796	3168	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe	86
PID 3168 wrote to memory of 1796	3168	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe	86
PID 1796 wrote to memory of 2524	1796	Quotes.exe	87
PID 1796 wrote to memory of 2524	1796	Quotes.exe	87
PID 1796 wrote to memory of 2524	1796	Quotes.exe	87
PID 1796 wrote to memory of 3180	1796	Quotes.exe	88
PID 1796 wrote to memory of 3180	1796	Quotes.exe	88
PID 1796 wrote to memory of 3180	1796	Quotes.exe	88
PID 3180 wrote to memory of 1260	3180	Quotes.exe	89
PID 3180 wrote to memory of 1260	3180	Quotes.exe	89
PID 3180 wrote to memory of 1260	3180	Quotes.exe	89
PID 3180 wrote to memory of 1260	3180	Quotes.exe	89
PID 1260 wrote to memory of 768	1260	svchost.exe	90
PID 1260 wrote to memory of 768	1260	svchost.exe	90
PID 1260 wrote to memory of 768	1260	svchost.exe	90
PID 1260 wrote to memory of 768	1260	svchost.exe	90
PID 1260 wrote to memory of 1836	1260	svchost.exe	91
PID 1260 wrote to memory of 1836	1260	svchost.exe	91
PID 1260 wrote to memory of 1836	1260	svchost.exe	91
PID 1260 wrote to memory of 1836	1260	svchost.exe	91
PID 1260 wrote to memory of 4480	1260	svchost.exe	92
PID 1260 wrote to memory of 4480	1260	svchost.exe	92
PID 1260 wrote to memory of 4480	1260	svchost.exe	92
PID 1260 wrote to memory of 4480	1260	svchost.exe	92

C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe
"C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Users\Admin\AppData\Local\directory\Quotes.exe
  "C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1796
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
    3⤵
    PID:2524
- - C:\Users\Admin\AppData\Local\directory\Quotes.exe
    "C:\Users\Admin\AppData\Local\directory\Quotes.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:3180
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Users\Admin\AppData\Local\directory\Quotes.exe"
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: MapViewOfSection
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1260
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\kzlkuxogoz"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:768
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\mtqdnqhhcithe"
        5⤵
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:1836
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\xvvvoisbyqlugrmj"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\gfh\logs.dat

Filesize
144B

MD5
a679c795ca62b82fa556db2380d41dbe

SHA1
c98bb98d870a68f6c2d471812d08c9f7ce251df3

SHA256
e2ca0a56175e15f6d3906e9d8d09f990ae6d31890aa82d6b19cb419164142997

SHA512
4ebebab09f59314d47e4b7839caac254da75b0844e7df2f82f3a1c348f453bed4f7133152f3775f0b49d9b4e446cdedaf328c94881c7813491ede426733ca50d

Download Submit
C:\Users\Admin\AppData\Local\Temp\finitism

Filesize
482KB

MD5
72bc3d87a8f52024a75906b8676c3f43

SHA1
2aad0d4b486cdf2fed722b5dae5de4da84119b83

SHA256
d2d8b4e6de2fda7e638bb50c0295e9bdcec5c2dbdff9f1c6db81606c7298581d

SHA512
45aaa8c7c80c722382bec8cb31bfab58e5c87aad95b375540ce539d2ba106a6a65b9194904b27ba965e620d85bb113cb61084bdebc97a9e10a7a6f0656ad407b

Download Submit
C:\Users\Admin\AppData\Local\Temp\kzlkuxogoz

Filesize
4KB

MD5
75379d3dcbcea6a69bc75b884816dd40

SHA1
7e073a03c3bdbbc60375ddbe56bba211c3d412a6

SHA256
cab559f3bbe4a0beb194dffca723b3072184b92687100462eaab04d66fff8de9

SHA512
710c2cee369a57a0039fc0d0c59de6118780210ef60ad0daf374f03ba94ab08039bc2aff821f7c99a0ecd0e16189c52e5b6d630b3d541f7b11375f134b985e8c

Download Submit
C:\Users\Admin\AppData\Local\directory\Quotes.exe

Filesize
1.6MB

MD5
2e58a14f3a8d78298aee99cb4ea39adc

SHA1
90c96e8671f739a0a20daaafab1567d3c457a612

SHA256
83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344

SHA512
71f115edb7c4013458f957473aa943a910d509f2a94b0ab6e57e84d13e458c17571702830a3eb7cf9e784e52ff1c986e35088a7ce7ab094c48f818d2a7fa6a5d

Download Submit
memory/768-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/768-38-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/768-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1260-49-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1260-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-89-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-88-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-46-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1260-50-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1260-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1260-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1796-10-0x0000000004090000-0x0000000004490000-memory.dmp

Filesize
4.0MB

Download
memory/1836-39-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1836-36-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1836-33-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3168-2-0x0000000004500000-0x0000000004900000-memory.dmp

Filesize
4.0MB

Download
memory/3180-16-0x00000000040D0000-0x00000000044D0000-memory.dmp

Filesize
4.0MB

Download
memory/4480-37-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4480-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4480-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download