remcos | a7e61e25a87bc80d6b0337a24de9c314e3e0412c27b4abbb997d17f65a083d8f

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
13-09-2024 01:01

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General

Target

79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe
Size

925KB
MD5

0e9e305e1e69c435383eb73f66c63530
SHA1

9d5eb75968bfe5a1e12af2d81f8b20322c77f2ec
SHA256

79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb
SHA512

1bdd88fab52efebbc81ce27b961f7a574ca6e4a9216570bf5193ff09c8f9f8771b93e0a4a312f61a208ecfec2f97b7027fa99dce35b5772d7d99a2a65ad5645e
SSDEEP

24576:Ibo2IFemqKLdQ+tExSVoVKbcqmuDaomTzktr:Ic2tlKLzsAqAhtSgt

Score

10^/10

remcos remotehost collection credential_access discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

104.250.180.178:7902

Attributes

audio_folder
MicRecords
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-OTOIRK
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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 3 IoCs

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

resource	yara_rule
behavioral2/memory/1152-59-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2540-58-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4648-56-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2540-58-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1152-59-0x0000000000400000-0x0000000000478000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe

Executes dropped EXE 7 IoCs

pid	Process
1856	Adobe.exe
4128	Adobe.exe
3784	Adobe.exe
1152	Adobe.exe
2540	Adobe.exe
780	Adobe.exe
4648	Adobe.exe

Reads user/profile data of web browsers 2 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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 972 set thread context of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 1856 set thread context of 3784	1856	Adobe.exe	96
PID 3784 set thread context of 1152	3784	Adobe.exe	98
PID 3784 set thread context of 2540	3784	Adobe.exe	99
PID 3784 set thread context of 4648	3784	Adobe.exe	101

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	Adobe.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1856	Adobe.exe
1856	Adobe.exe
4648	Adobe.exe
4648	Adobe.exe
1152	Adobe.exe
1152	Adobe.exe
1152	Adobe.exe
1152	Adobe.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3784	Adobe.exe
3784	Adobe.exe
3784	Adobe.exe
3784	Adobe.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1856	Adobe.exe
Token: SeDebugPrivilege	4648	Adobe.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 972 wrote to memory of 744	972	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	93
PID 744 wrote to memory of 1856	744	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	94
PID 744 wrote to memory of 1856	744	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	94
PID 744 wrote to memory of 1856	744	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	94
PID 1856 wrote to memory of 4128	1856	Adobe.exe	95
PID 1856 wrote to memory of 4128	1856	Adobe.exe	95
PID 1856 wrote to memory of 4128	1856	Adobe.exe	95
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 1856 wrote to memory of 3784	1856	Adobe.exe	96
PID 3784 wrote to memory of 1152	3784	Adobe.exe	98
PID 3784 wrote to memory of 1152	3784	Adobe.exe	98
PID 3784 wrote to memory of 1152	3784	Adobe.exe	98
PID 3784 wrote to memory of 1152	3784	Adobe.exe	98
PID 3784 wrote to memory of 2540	3784	Adobe.exe	99
PID 3784 wrote to memory of 2540	3784	Adobe.exe	99
PID 3784 wrote to memory of 2540	3784	Adobe.exe	99
PID 3784 wrote to memory of 2540	3784	Adobe.exe	99
PID 3784 wrote to memory of 780	3784	Adobe.exe	100
PID 3784 wrote to memory of 780	3784	Adobe.exe	100
PID 3784 wrote to memory of 780	3784	Adobe.exe	100
PID 3784 wrote to memory of 4648	3784	Adobe.exe	101
PID 3784 wrote to memory of 4648	3784	Adobe.exe	101
PID 3784 wrote to memory of 4648	3784	Adobe.exe	101
PID 3784 wrote to memory of 4648	3784	Adobe.exe	101

C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe
"C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:972
- C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe
  "C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:744
- - 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 behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1856
  - - C:\ProgramData\Adobe\Adobe.exe
      "C:\ProgramData\Adobe\Adobe.exe"
      4⤵
      Executes dropped EXE
      PID:4128
  - - 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:3784
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\kjfsum"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:1152
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\mekkvevua"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:2540
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\xgpvvxfonndk"
        5⤵
        Executes dropped EXE
        
        PID:780
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\xgpvvxfonndk"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4648

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

Loading Replay Monitor...

Downloads

C:\ProgramData\Adobe\Adobe.exe

Filesize
925KB

MD5
0e9e305e1e69c435383eb73f66c63530

SHA1
9d5eb75968bfe5a1e12af2d81f8b20322c77f2ec

SHA256
79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb

SHA512
1bdd88fab52efebbc81ce27b961f7a574ca6e4a9216570bf5193ff09c8f9f8771b93e0a4a312f61a208ecfec2f97b7027fa99dce35b5772d7d99a2a65ad5645e

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

Filesize
4KB

MD5
c7ac5a21cac5bd5580a6e28112212613

SHA1
0a256177c387053fec680e599bcb63729a16c161

SHA256
89e0e7dc8ad418f8613610b71d0c140247e26a5f9a453ee255b1467fb80f15ff

SHA512
753675a75b643132e50175d67589a3952cb5154a7e51c11883b2e28bf4fe406afbaed88e61575cc114156e41ed5c587b0f76845e6d20ddf922e775bfff3f0b43

Download Submit
memory/744-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/744-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/744-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/744-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/744-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/972-4-0x0000000004F80000-0x0000000004F8A000-memory.dmp

Filesize
40KB

Download
memory/972-8-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/972-9-0x00000000065B0000-0x0000000006670000-memory.dmp

Filesize
768KB

Download
memory/972-10-0x0000000008E50000-0x0000000008EEC000-memory.dmp

Filesize
624KB

Download
memory/972-7-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/972-6-0x0000000004FC0000-0x0000000004FD0000-memory.dmp

Filesize
64KB

Download
memory/972-5-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/972-15-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/972-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/972-3-0x0000000004FE0000-0x0000000005072000-memory.dmp

Filesize
584KB

Download
memory/972-2-0x0000000005590000-0x0000000005B34000-memory.dmp

Filesize
5.6MB

Download
memory/972-1-0x00000000005A0000-0x000000000068C000-memory.dmp

Filesize
944KB

Download
memory/1152-47-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1152-59-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1152-57-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1856-32-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1856-29-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/1856-30-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1856-40-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/1856-31-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/2540-49-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2540-54-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2540-58-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3784-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-65-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3784-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-69-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3784-68-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3784-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3784-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4648-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4648-52-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4648-55-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download