remcos | 83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344

Analysis

max time kernel
149s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-10-2024 01:59

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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 5 IoCs

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

resource	yara_rule
behavioral1/memory/2616-43-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2724-42-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1656-36-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1656-37-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1656-48-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2616-43-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/1656-36-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/1656-37-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/1656-48-0x0000000000400000-0x0000000000478000-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 1 IoCs

pid	Process
2160	Quotes.exe

Loads dropped DLL 1 IoCs

pid	Process
2088	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0008000000016307-4.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2160 set thread context of 2756	2160	Quotes.exe	31
PID 2756 set thread context of 1656	2756	svchost.exe	32
PID 2756 set thread context of 2616	2756	svchost.exe	33
PID 2756 set thread context of 2724	2756	svchost.exe	34

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 6 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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quotes.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1656	svchost.exe
1656	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2160	Quotes.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2724	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2756	svchost.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 2160	2088	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe	30
PID 2088 wrote to memory of 2160	2088	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe	30
PID 2088 wrote to memory of 2160	2088	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe	30
PID 2088 wrote to memory of 2160	2088	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe	30
PID 2160 wrote to memory of 2756	2160	Quotes.exe	31
PID 2160 wrote to memory of 2756	2160	Quotes.exe	31
PID 2160 wrote to memory of 2756	2160	Quotes.exe	31
PID 2160 wrote to memory of 2756	2160	Quotes.exe	31
PID 2160 wrote to memory of 2756	2160	Quotes.exe	31
PID 2756 wrote to memory of 1656	2756	svchost.exe	32
PID 2756 wrote to memory of 1656	2756	svchost.exe	32
PID 2756 wrote to memory of 1656	2756	svchost.exe	32
PID 2756 wrote to memory of 1656	2756	svchost.exe	32
PID 2756 wrote to memory of 1656	2756	svchost.exe	32
PID 2756 wrote to memory of 2616	2756	svchost.exe	33
PID 2756 wrote to memory of 2616	2756	svchost.exe	33
PID 2756 wrote to memory of 2616	2756	svchost.exe	33
PID 2756 wrote to memory of 2616	2756	svchost.exe	33
PID 2756 wrote to memory of 2616	2756	svchost.exe	33
PID 2756 wrote to memory of 2724	2756	svchost.exe	34
PID 2756 wrote to memory of 2724	2756	svchost.exe	34
PID 2756 wrote to memory of 2724	2756	svchost.exe	34
PID 2756 wrote to memory of 2724	2756	svchost.exe	34
PID 2756 wrote to memory of 2724	2756	svchost.exe	34

C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe
"C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Users\Admin\AppData\Local\directory\Quotes.exe
  "C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2160
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2756
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\zsxpajcbofuucoeawbimpfnonfi"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1656
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\bvczacmvcnmymdsefmdgakifwlsyzk"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:2616
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\mphsbuxwqvedpjoioxqhdwuowsjhsvbhr"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:2724

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

Replay Monitor

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Downloads

C:\ProgramData\gfh\logs.dat

Filesize
144B

MD5
31ce9293a3319fbdaa30237f18a857b8

SHA1
49deac55fe1571f762e674fc8590159a908b8cd3

SHA256
eec24bc287d38d02c88a877b8414fede89d5a4a75d43589bfe14908fd785fa9a

SHA512
56051b38f3607f2706e9dfa1ac597ae90cf5931693acc1c20b47a12cee18b06613cc3df9d8f0cb5bfa9793c0151ce6990f304d6b048f5c6b0dc49d567e5899a1

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

Filesize
1.6MB

MD5
2e58a14f3a8d78298aee99cb4ea39adc

SHA1
90c96e8671f739a0a20daaafab1567d3c457a612

SHA256
83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344

SHA512
71f115edb7c4013458f957473aa943a910d509f2a94b0ab6e57e84d13e458c17571702830a3eb7cf9e784e52ff1c986e35088a7ce7ab094c48f818d2a7fa6a5d

Download Submit
memory/1656-36-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1656-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1656-48-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1656-37-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1656-33-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1656-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2088-2-0x0000000003ED0000-0x00000000042D0000-memory.dmp

Filesize
4.0MB

Download
memory/2160-12-0x0000000003FA0000-0x00000000043A0000-memory.dmp

Filesize
4.0MB

Download
memory/2616-35-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2616-43-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2616-40-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2724-39-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2724-42-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2724-41-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2756-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-55-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2756-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-51-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2756-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-54-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2756-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-92-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2756-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download