remcos | cd2b64d529d69709bacacb55cdb7b1b98d556d0b3ba9ad4afdfeddc23580ec23

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-12-2024 23:20

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General

Target

Payment_Advice.exe
Size

1.3MB
MD5

0f7b4b89b578e2971d00510d2c3a6e3f
SHA1

5a0a0087bf64964b698809694f3b2b15183e6e48
SHA256

38a21f4c7f449e87a7881041e2c0f1b6f8229d93349e2382b7e6326db1f3e417
SHA512

db36fe84ca01fbdb7613a1fb6b11df91ed6cccb2fb042080e7bb98261c0a8e8b6fd95801e234ad418a516e6dfad0d920bc610d4b2b4a490dafde33a2a5e7d1c4
SSDEEP

24576:Qu6J33O0c+JY5UZ+XC0kGso6FaMAp6BAo1Ibov1SKyjFyVxvWY:au0c++OCvkGs9FaMAgBjILKUgSY

Score

10^/10

remcos remotehost collection discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

154.216.17.190:2404

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-3W6OXK
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 7 IoCs

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

resource	yara_rule
behavioral1/memory/2524-30-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2552-36-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2524-35-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2552-29-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2600-34-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2524-41-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2552-44-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2552-36-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2552-29-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2552-44-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2524-30-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2524-35-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2524-41-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1964 set thread context of 2724	1964	Payment_Advice.exe	30
PID 2724 set thread context of 2524	2724	svchost.exe	32
PID 2724 set thread context of 2552	2724	svchost.exe	33
PID 2724 set thread context of 2600	2724	svchost.exe	34

System Location Discovery: System Language Discovery 1 TTPs 5 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	Payment_Advice.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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2524	svchost.exe
2524	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
1964	Payment_Advice.exe
2724	svchost.exe
2724	svchost.exe
2724	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2600	svchost.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
1964	Payment_Advice.exe
1964	Payment_Advice.exe
1964	Payment_Advice.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
1964	Payment_Advice.exe
1964	Payment_Advice.exe
1964	Payment_Advice.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 2724	1964	Payment_Advice.exe	30
PID 1964 wrote to memory of 2724	1964	Payment_Advice.exe	30
PID 1964 wrote to memory of 2724	1964	Payment_Advice.exe	30
PID 1964 wrote to memory of 2724	1964	Payment_Advice.exe	30
PID 1964 wrote to memory of 2724	1964	Payment_Advice.exe	30
PID 2724 wrote to memory of 2524	2724	svchost.exe	32
PID 2724 wrote to memory of 2524	2724	svchost.exe	32
PID 2724 wrote to memory of 2524	2724	svchost.exe	32
PID 2724 wrote to memory of 2524	2724	svchost.exe	32
PID 2724 wrote to memory of 2524	2724	svchost.exe	32
PID 2724 wrote to memory of 2552	2724	svchost.exe	33
PID 2724 wrote to memory of 2552	2724	svchost.exe	33
PID 2724 wrote to memory of 2552	2724	svchost.exe	33
PID 2724 wrote to memory of 2552	2724	svchost.exe	33
PID 2724 wrote to memory of 2552	2724	svchost.exe	33
PID 2724 wrote to memory of 2600	2724	svchost.exe	34
PID 2724 wrote to memory of 2600	2724	svchost.exe	34
PID 2724 wrote to memory of 2600	2724	svchost.exe	34
PID 2724 wrote to memory of 2600	2724	svchost.exe	34
PID 2724 wrote to memory of 2600	2724	svchost.exe	34

C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe
"C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\Payment_Advice.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2724
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\nrmxenszanrbvmtpcjgxttj"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2524
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\ytspfgctnvkogtpbtmbyegvgsop"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2552
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\aofayynujdctizdfcxoahlqptdzvyx"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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:\Users\Admin\AppData\Local\Temp\nrmxenszanrbvmtpcjgxttj

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/1964-6-0x0000000000EC0000-0x00000000012C0000-memory.dmp

Filesize
4.0MB

Download
memory/2524-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2524-41-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2524-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2524-21-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2524-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2524-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2552-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2552-24-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2552-28-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2552-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2552-36-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2552-44-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2600-32-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2600-33-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2600-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2724-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-45-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2724-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-10-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-49-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2724-48-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2724-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2724-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download