remcos | 93ea6ac422f90a1031160360409fea1c16c533be06cc2b6e71e748ee3d20683a

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2024 21:04

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General

Target

ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe
Size

945KB
MD5

a21780a599c30bcf11b6152ff9d16be2
SHA1

953f98a9904c76b275809bad78d16cf550f2483d
SHA256

93ea6ac422f90a1031160360409fea1c16c533be06cc2b6e71e748ee3d20683a
SHA512

8e1f69a23b508c2cc4c61b001b91645a91211c89e11d35237cc78890c68f96362151a7db7da85045d9a639bd717110e965c92eaaa546b8f9702620e6022d8d59
SSDEEP

24576:gjb4DeayiRyXCTovSWHH00vbqc+Su9NvyqWPCx:gf5+k1n00D4ScN69PCx

Score

10^/10

remcos remotehost collection discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

104.250.180.178:7902

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Adobe.exe
copy_folder
Adobe
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Adobe_Nov-3XE9WN
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.

Processes:

resource	yara_rule
behavioral2/memory/2596-56-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4036-57-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4412-55-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/4036-57-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/4412-55-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe

Executes dropped EXE 5 IoCs

Processes:

Adobe.exeAdobe.exeAdobe.exeAdobe.exeAdobe.exe

pid	Process
4436	Adobe.exe
4468	Adobe.exe
4412	Adobe.exe
4036	Adobe.exe
2596	Adobe.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

Adobe.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	Adobe.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exeAdobe.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe_Nov-3XE9WN = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe_Nov-3XE9WN = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe_Nov-3XE9WN = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe_Nov-3XE9WN = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe

Suspicious use of SetThreadContext 5 IoCs

Processes:

ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exeAdobe.exeAdobe.exe

description	pid	Process	procid_target
PID 848 set thread context of 4884	848	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	90
PID 4436 set thread context of 4468	4436	Adobe.exe	101
PID 4468 set thread context of 4412	4468	Adobe.exe	103
PID 4468 set thread context of 4036	4468	Adobe.exe	104
PID 4468 set thread context of 2596	4468	Adobe.exe	105

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

Processes:

Adobe.exeAdobe.exeISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exeISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exeAdobe.exeAdobe.exeAdobe.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Adobe.exeAdobe.exe

pid	Process
4412	Adobe.exe
4412	Adobe.exe
2596	Adobe.exe
2596	Adobe.exe
4412	Adobe.exe
4412	Adobe.exe

Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

Adobe.exe

pid	Process
4468	Adobe.exe
4468	Adobe.exe
4468	Adobe.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Adobe.exe

description	pid	Process
Token: SeDebugPrivilege	2596	Adobe.exe

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exeISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exeAdobe.exeAdobe.exe

description	pid	Process	procid_target
PID 848 wrote to memory of 4884	848	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	90
PID 848 wrote to memory of 4884	848	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	90
PID 848 wrote to memory of 4884	848	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	90
PID 848 wrote to memory of 4884	848	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	90
PID 848 wrote to memory of 4884	848	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	90
PID 848 wrote to memory of 4884	848	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	90
PID 848 wrote to memory of 4884	848	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	90
PID 848 wrote to memory of 4884	848	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	90
PID 848 wrote to memory of 4884	848	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	90
PID 848 wrote to memory of 4884	848	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	90
PID 4884 wrote to memory of 4436	4884	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	91
PID 4884 wrote to memory of 4436	4884	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	91
PID 4884 wrote to memory of 4436	4884	ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe	91
PID 4436 wrote to memory of 4468	4436	Adobe.exe	101
PID 4436 wrote to memory of 4468	4436	Adobe.exe	101
PID 4436 wrote to memory of 4468	4436	Adobe.exe	101
PID 4436 wrote to memory of 4468	4436	Adobe.exe	101
PID 4436 wrote to memory of 4468	4436	Adobe.exe	101
PID 4436 wrote to memory of 4468	4436	Adobe.exe	101
PID 4436 wrote to memory of 4468	4436	Adobe.exe	101
PID 4436 wrote to memory of 4468	4436	Adobe.exe	101
PID 4436 wrote to memory of 4468	4436	Adobe.exe	101
PID 4436 wrote to memory of 4468	4436	Adobe.exe	101
PID 4468 wrote to memory of 4412	4468	Adobe.exe	103
PID 4468 wrote to memory of 4412	4468	Adobe.exe	103
PID 4468 wrote to memory of 4412	4468	Adobe.exe	103
PID 4468 wrote to memory of 4412	4468	Adobe.exe	103
PID 4468 wrote to memory of 4036	4468	Adobe.exe	104
PID 4468 wrote to memory of 4036	4468	Adobe.exe	104
PID 4468 wrote to memory of 4036	4468	Adobe.exe	104
PID 4468 wrote to memory of 4036	4468	Adobe.exe	104
PID 4468 wrote to memory of 2596	4468	Adobe.exe	105
PID 4468 wrote to memory of 2596	4468	Adobe.exe	105
PID 4468 wrote to memory of 2596	4468	Adobe.exe	105
PID 4468 wrote to memory of 2596	4468	Adobe.exe	105

C:\Users\Admin\AppData\Local\Temp\ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe
"C:\Users\Admin\AppData\Local\Temp\ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:848
- C:\Users\Admin\AppData\Local\Temp\ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe
  "C:\Users\Admin\AppData\Local\Temp\ISF (TWN24110458 - Invoice & Packing List PO POUS120000241, POUS120000771.scr.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4884
- - C:\ProgramData\Adobe\Adobe.exe
    "C:\ProgramData\Adobe\Adobe.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4436
  - - C:\ProgramData\Adobe\Adobe.exe
      "C:\ProgramData\Adobe\Adobe.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:4468
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\ltuwxzobgurb"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:4412
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\wvzhykyvucjfiydq"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:4036
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\gqezqcjwqlbstmscjkg"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2596

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Adobe\Adobe.exe

Filesize
945KB

MD5
a21780a599c30bcf11b6152ff9d16be2

SHA1
953f98a9904c76b275809bad78d16cf550f2483d

SHA256
93ea6ac422f90a1031160360409fea1c16c533be06cc2b6e71e748ee3d20683a

SHA512
8e1f69a23b508c2cc4c61b001b91645a91211c89e11d35237cc78890c68f96362151a7db7da85045d9a639bd717110e965c92eaaa546b8f9702620e6022d8d59

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

Filesize
4KB

MD5
16dfb23eaa7972c59c36fcbc0946093b

SHA1
1e9e3ff83a05131575f67e202d352709205f20f8

SHA256
36c49c94327c8cadcad4c0d2b3a8f5162fc7bb86624923484476c5f7b960bc4c

SHA512
a8b38b5e7bf886b78c5c7f01234b44647a252d4dfbcc06c99b863f8e160e3cfc151b2a83b8b49e09d13e8547419467da4bffbb8dee5fc6740032eb7c839d89dc

Download Submit
memory/848-6-0x0000000005AC0000-0x0000000005B5C000-memory.dmp

Filesize
624KB

Download
memory/848-3-0x0000000005830000-0x00000000058C2000-memory.dmp

Filesize
584KB

Download
memory/848-5-0x0000000074650000-0x0000000074E00000-memory.dmp

Filesize
7.7MB

Download
memory/848-4-0x0000000005800000-0x000000000580A000-memory.dmp

Filesize
40KB

Download
memory/848-16-0x0000000074650000-0x0000000074E00000-memory.dmp

Filesize
7.7MB

Download
memory/848-7-0x0000000005CC0000-0x0000000005CD8000-memory.dmp

Filesize
96KB

Download
memory/848-8-0x000000007465E000-0x000000007465F000-memory.dmp

Filesize
4KB

Download
memory/848-9-0x0000000074650000-0x0000000074E00000-memory.dmp

Filesize
7.7MB

Download
memory/848-10-0x0000000006F60000-0x0000000007022000-memory.dmp

Filesize
776KB

Download
memory/848-2-0x0000000005D00000-0x00000000062A4000-memory.dmp

Filesize
5.6MB

Download
memory/848-0-0x000000007465E000-0x000000007465F000-memory.dmp

Filesize
4KB

Download
memory/848-1-0x0000000000D00000-0x0000000000DF2000-memory.dmp

Filesize
968KB

Download
memory/2596-52-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2596-54-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2596-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4036-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4036-51-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4036-57-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4412-55-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4412-50-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4412-46-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4436-29-0x0000000073F5E000-0x0000000073F5F000-memory.dmp

Filesize
4KB

Download
memory/4436-32-0x0000000073F50000-0x0000000074700000-memory.dmp

Filesize
7.7MB

Download
memory/4436-39-0x0000000073F50000-0x0000000074700000-memory.dmp

Filesize
7.7MB

Download
memory/4436-31-0x0000000073F5E000-0x0000000073F5F000-memory.dmp

Filesize
4KB

Download
memory/4436-30-0x0000000073F50000-0x0000000074700000-memory.dmp

Filesize
7.7MB

Download
memory/4468-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-63-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4468-67-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4468-66-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4468-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4884-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4884-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4884-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4884-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4884-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download