remcos | a7e61e25a87bc80d6b0337a24de9c314e3e0412c27b4abbb997d17f65a083d8f

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-09-2024 09:25

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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
behavioral1/memory/2880-74-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1556-79-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/864-73-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2880-74-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/864-73-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Executes dropped EXE 6 IoCs

pid	Process
2864	Adobe.exe
2752	Adobe.exe
2860	Adobe.exe
864	Adobe.exe
2880	Adobe.exe
1556	Adobe.exe

Loads dropped DLL 1 IoCs

pid	Process
2968	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.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-1-5-21-3290804112-2823094203-3137964600-1000\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-1-5-21-3290804112-2823094203-3137964600-1000\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-1-5-21-3290804112-2823094203-3137964600-1000\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 2404 set thread context of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2864 set thread context of 2860	2864	Adobe.exe	34
PID 2860 set thread context of 864	2860	Adobe.exe	36
PID 2860 set thread context of 2880	2860	Adobe.exe	37
PID 2860 set thread context of 1556	2860	Adobe.exe	38

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	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.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 4 IoCs

pid	Process
2864	Adobe.exe
2864	Adobe.exe
864	Adobe.exe
864	Adobe.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2860	Adobe.exe
2860	Adobe.exe
2860	Adobe.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2864	Adobe.exe
Token: SeDebugPrivilege	1556	Adobe.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2404 wrote to memory of 2968	2404	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	31
PID 2968 wrote to memory of 2864	2968	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	32
PID 2968 wrote to memory of 2864	2968	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	32
PID 2968 wrote to memory of 2864	2968	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	32
PID 2968 wrote to memory of 2864	2968	79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe	32
PID 2864 wrote to memory of 2752	2864	Adobe.exe	33
PID 2864 wrote to memory of 2752	2864	Adobe.exe	33
PID 2864 wrote to memory of 2752	2864	Adobe.exe	33
PID 2864 wrote to memory of 2752	2864	Adobe.exe	33
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2864 wrote to memory of 2860	2864	Adobe.exe	34
PID 2860 wrote to memory of 864	2860	Adobe.exe	36
PID 2860 wrote to memory of 864	2860	Adobe.exe	36
PID 2860 wrote to memory of 864	2860	Adobe.exe	36
PID 2860 wrote to memory of 864	2860	Adobe.exe	36
PID 2860 wrote to memory of 864	2860	Adobe.exe	36
PID 2860 wrote to memory of 2880	2860	Adobe.exe	37
PID 2860 wrote to memory of 2880	2860	Adobe.exe	37
PID 2860 wrote to memory of 2880	2860	Adobe.exe	37
PID 2860 wrote to memory of 2880	2860	Adobe.exe	37
PID 2860 wrote to memory of 2880	2860	Adobe.exe	37
PID 2860 wrote to memory of 1556	2860	Adobe.exe	38
PID 2860 wrote to memory of 1556	2860	Adobe.exe	38
PID 2860 wrote to memory of 1556	2860	Adobe.exe	38
PID 2860 wrote to memory of 1556	2860	Adobe.exe	38
PID 2860 wrote to memory of 1556	2860	Adobe.exe	38

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:2404
- C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe
  "C:\Users\Admin\AppData\Local\Temp\79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2968
- - 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:2864
  - - C:\ProgramData\Adobe\Adobe.exe
      "C:\ProgramData\Adobe\Adobe.exe"
      4⤵
      Executes dropped EXE
      PID:2752
  - - 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:2860
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\dxonxxmmwodyioncwv"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:864
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\frugypwgkwvlkcjgffonx"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:2880
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\qthqyihiyenqviykwqagioqxd"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:1556

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

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:\Users\Admin\AppData\Local\Temp\dxonxxmmwodyioncwv

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\ProgramData\Adobe\Adobe.exe

Filesize
925KB

MD5
0e9e305e1e69c435383eb73f66c63530

SHA1
9d5eb75968bfe5a1e12af2d81f8b20322c77f2ec

SHA256
79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb

SHA512
1bdd88fab52efebbc81ce27b961f7a574ca6e4a9216570bf5193ff09c8f9f8771b93e0a4a312f61a208ecfec2f97b7027fa99dce35b5772d7d99a2a65ad5645e

Download Submit
memory/864-73-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/864-71-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/864-66-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/864-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1556-76-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1556-78-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1556-79-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2404-6-0x00000000053B0000-0x0000000005470000-memory.dmp

Filesize
768KB

Download
memory/2404-5-0x0000000074CE0000-0x00000000753CE000-memory.dmp

Filesize
6.9MB

Download
memory/2404-4-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

Filesize
4KB

Download
memory/2404-3-0x00000000008F0000-0x0000000000900000-memory.dmp

Filesize
64KB

Download
memory/2404-2-0x0000000074CE0000-0x00000000753CE000-memory.dmp

Filesize
6.9MB

Download
memory/2404-23-0x0000000074CE0000-0x00000000753CE000-memory.dmp

Filesize
6.9MB

Download
memory/2404-1-0x0000000000A20000-0x0000000000B0C000-memory.dmp

Filesize
944KB

Download
memory/2404-0-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

Filesize
4KB

Download
memory/2860-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-85-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2860-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-92-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-91-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-90-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-50-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2860-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-88-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2860-89-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2860-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2860-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2864-31-0x0000000074CE0000-0x00000000753CE000-memory.dmp

Filesize
6.9MB

Download
memory/2864-32-0x0000000074CE0000-0x00000000753CE000-memory.dmp

Filesize
6.9MB

Download
memory/2864-30-0x0000000000A40000-0x0000000000B2C000-memory.dmp

Filesize
944KB

Download
memory/2864-56-0x0000000074CE0000-0x00000000753CE000-memory.dmp

Filesize
6.9MB

Download
memory/2880-69-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2880-74-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2880-72-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2968-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2968-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2968-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2968-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2968-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2968-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2968-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2968-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2968-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2968-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2968-10-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download