remcos | 5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae

Analysis

max time kernel
147s
max time network
153s
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 01:21

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General

Target

5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
Size

900KB
MD5

115d4b6929a1f51b902f5d59cffd3157
SHA1

bad3a42297e74d234fe74cb8af7de321f840a8f5
SHA256

5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae
SHA512

57384aa06de685696985d2c3fa67f35594d0e1e0dfbe21c487a9804280394dc805e65638bd1e3de15922e821d9d83e5540d73ae61ee601520896196e2f9734be
SSDEEP

24576:8aXj14fNdPYDtWPHV9yyoeHzQpnVsOA9tOW:8HTwc3ro0CVO9t9

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/1720-57-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3296-54-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1240-52-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1240-52-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3296-54-0x0000000000400000-0x0000000000478000-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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe

Executes dropped EXE 5 IoCs

pid	Process
3084	Adobe.exe
60	Adobe.exe
3296	Adobe.exe
1240	Adobe.exe
1720	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-1-5-21-945322488-2060912225-3527527000-1000\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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\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 2856 set thread context of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 3084 set thread context of 60	3084	Adobe.exe	95
PID 60 set thread context of 3296	60	Adobe.exe	97
PID 60 set thread context of 1240	60	Adobe.exe	98
PID 60 set thread context of 1720	60	Adobe.exe	99

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	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.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	Adobe.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3296	Adobe.exe
3296	Adobe.exe
1720	Adobe.exe
1720	Adobe.exe
3296	Adobe.exe
3296	Adobe.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
60	Adobe.exe
60	Adobe.exe
60	Adobe.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1720	Adobe.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2856 wrote to memory of 2056	2856	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	93
PID 2056 wrote to memory of 3084	2056	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	94
PID 2056 wrote to memory of 3084	2056	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	94
PID 2056 wrote to memory of 3084	2056	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	94
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 3084 wrote to memory of 60	3084	Adobe.exe	95
PID 60 wrote to memory of 3296	60	Adobe.exe	97
PID 60 wrote to memory of 3296	60	Adobe.exe	97
PID 60 wrote to memory of 3296	60	Adobe.exe	97
PID 60 wrote to memory of 3296	60	Adobe.exe	97
PID 60 wrote to memory of 1240	60	Adobe.exe	98
PID 60 wrote to memory of 1240	60	Adobe.exe	98
PID 60 wrote to memory of 1240	60	Adobe.exe	98
PID 60 wrote to memory of 1240	60	Adobe.exe	98
PID 60 wrote to memory of 1720	60	Adobe.exe	99
PID 60 wrote to memory of 1720	60	Adobe.exe	99
PID 60 wrote to memory of 1720	60	Adobe.exe	99
PID 60 wrote to memory of 1720	60	Adobe.exe	99

C:\Users\Admin\AppData\Local\Temp\5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
"C:\Users\Admin\AppData\Local\Temp\5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Users\Admin\AppData\Local\Temp\5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
  "C:\Users\Admin\AppData\Local\Temp\5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2056
- - 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:3084
  - - 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:60
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\ekbehffhpyxqpbizolgydm"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:3296
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\gmoxaxqjdgpdzhelfwtrgygby"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:1240
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\rguqbibczohicvtpohgtrdtsghhn"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1720

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
900KB

MD5
115d4b6929a1f51b902f5d59cffd3157

SHA1
bad3a42297e74d234fe74cb8af7de321f840a8f5

SHA256
5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae

SHA512
57384aa06de685696985d2c3fa67f35594d0e1e0dfbe21c487a9804280394dc805e65638bd1e3de15922e821d9d83e5540d73ae61ee601520896196e2f9734be

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

Filesize
4KB

MD5
18db1829b27eaeed163c211f5d179d72

SHA1
4442332494cba1e012f8876ecac42126ba995bc6

SHA256
610c5ee3f0e63441521d26bc477c9618a4c5f86e93d31b31890680c69e3ecc3d

SHA512
123d68b2c84f7a52d15faa212c06f33b04a55585e2aeb16bb14df95b18c0bcf31933e5bf0c736c90bc054b9527fccb046540d3302a0f149ebeed7c6bcca0b986

Download Submit
memory/60-66-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/60-67-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/60-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-63-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/60-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/60-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1240-52-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1240-50-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1240-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1720-57-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1720-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1720-51-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2056-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2056-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2056-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2056-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2056-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2856-9-0x0000000006BE0000-0x0000000006CA0000-memory.dmp

Filesize
768KB

Download
memory/2856-7-0x0000000074A6E000-0x0000000074A6F000-memory.dmp

Filesize
4KB

Download
memory/2856-17-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/2856-1-0x0000000000D40000-0x0000000000E28000-memory.dmp

Filesize
928KB

Download
memory/2856-2-0x0000000005CB0000-0x0000000006254000-memory.dmp

Filesize
5.6MB

Download
memory/2856-0-0x0000000074A6E000-0x0000000074A6F000-memory.dmp

Filesize
4KB

Download
memory/2856-3-0x0000000005700000-0x0000000005792000-memory.dmp

Filesize
584KB

Download
memory/2856-4-0x00000000056E0000-0x00000000056EA000-memory.dmp

Filesize
40KB

Download
memory/2856-5-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/2856-6-0x0000000005970000-0x0000000005980000-memory.dmp

Filesize
64KB

Download
memory/2856-10-0x0000000009470000-0x000000000950C000-memory.dmp

Filesize
624KB

Download
memory/2856-8-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/3084-32-0x0000000074270000-0x0000000074A20000-memory.dmp

Filesize
7.7MB

Download
memory/3084-31-0x000000007427E000-0x000000007427F000-memory.dmp

Filesize
4KB

Download
memory/3084-39-0x0000000074270000-0x0000000074A20000-memory.dmp

Filesize
7.7MB

Download
memory/3084-30-0x0000000074270000-0x0000000074A20000-memory.dmp

Filesize
7.7MB

Download
memory/3084-29-0x000000007427E000-0x000000007427F000-memory.dmp

Filesize
4KB

Download
memory/3296-46-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3296-53-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3296-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download