remcos | ec8b5d134fb3669c59733a303ef5a03bb6cc5a02602bce545d4fedda93ea4962

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-09-2024 09:20

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General

Target

BL-TLN0124796CMACGM.scr
Size

915KB
MD5

02d513fa3a4c04f1ffce97c25caccdff
SHA1

853948f7ff1d69a293c4f4617185c24b9859e6dd
SHA256

d00a443bf00b909b32fbd9894462283fca5788e28b96a9e729f43fc4f2ca585a
SHA512

9a9b925e7d5acec5216ecb64f7352a8a27598106452984f08155f2bef640fe1ad93ff3a7869cacfaec2514641740c41fcc0e7e4f0172eaa7072c1c9c05087ab3
SSDEEP

24576:SgW2J4Sl29MaW6EEJJQEtTShtxMwwW7yUVzmoeli:SgjJYSoxtuDxZlyUVzmo

Score

10^/10

remcos generalwire-slaves collection discovery execution rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

GeneralWire-Slaves

milliondollar23.duckdns.org:3984

Attributes

audio_folder
MicRecords
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-TWU43D
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

Detected Nirsoft tools 3 IoCs

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

resource	yara_rule
behavioral1/memory/1108-61-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2884-64-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2588-66-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2884-64-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/1108-61-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2428	powershell.exe
2808	powershell.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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	BL-TLN0124796CMACGM.scr

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2368 set thread context of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2628 set thread context of 1108	2628	BL-TLN0124796CMACGM.scr	38
PID 2628 set thread context of 2884	2628	BL-TLN0124796CMACGM.scr	39
PID 2628 set thread context of 2588	2628	BL-TLN0124796CMACGM.scr	40

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 8 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	BL-TLN0124796CMACGM.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BL-TLN0124796CMACGM.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BL-TLN0124796CMACGM.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BL-TLN0124796CMACGM.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BL-TLN0124796CMACGM.scr

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2368	BL-TLN0124796CMACGM.scr
2368	BL-TLN0124796CMACGM.scr
2428	powershell.exe
2808	powershell.exe
1108	BL-TLN0124796CMACGM.scr
1108	BL-TLN0124796CMACGM.scr

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2628	BL-TLN0124796CMACGM.scr

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2628	BL-TLN0124796CMACGM.scr
2628	BL-TLN0124796CMACGM.scr
2628	BL-TLN0124796CMACGM.scr

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	BL-TLN0124796CMACGM.scr
Token: SeDebugPrivilege	2428	powershell.exe
Token: SeDebugPrivilege	2808	powershell.exe
Token: SeDebugPrivilege	2588	BL-TLN0124796CMACGM.scr

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2628	BL-TLN0124796CMACGM.scr

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 2428	2368	BL-TLN0124796CMACGM.scr	30
PID 2368 wrote to memory of 2428	2368	BL-TLN0124796CMACGM.scr	30
PID 2368 wrote to memory of 2428	2368	BL-TLN0124796CMACGM.scr	30
PID 2368 wrote to memory of 2428	2368	BL-TLN0124796CMACGM.scr	30
PID 2368 wrote to memory of 2808	2368	BL-TLN0124796CMACGM.scr	32
PID 2368 wrote to memory of 2808	2368	BL-TLN0124796CMACGM.scr	32
PID 2368 wrote to memory of 2808	2368	BL-TLN0124796CMACGM.scr	32
PID 2368 wrote to memory of 2808	2368	BL-TLN0124796CMACGM.scr	32
PID 2368 wrote to memory of 2836	2368	BL-TLN0124796CMACGM.scr	34
PID 2368 wrote to memory of 2836	2368	BL-TLN0124796CMACGM.scr	34
PID 2368 wrote to memory of 2836	2368	BL-TLN0124796CMACGM.scr	34
PID 2368 wrote to memory of 2836	2368	BL-TLN0124796CMACGM.scr	34
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2368 wrote to memory of 2628	2368	BL-TLN0124796CMACGM.scr	36
PID 2628 wrote to memory of 1108	2628	BL-TLN0124796CMACGM.scr	38
PID 2628 wrote to memory of 1108	2628	BL-TLN0124796CMACGM.scr	38
PID 2628 wrote to memory of 1108	2628	BL-TLN0124796CMACGM.scr	38
PID 2628 wrote to memory of 1108	2628	BL-TLN0124796CMACGM.scr	38
PID 2628 wrote to memory of 1108	2628	BL-TLN0124796CMACGM.scr	38
PID 2628 wrote to memory of 2884	2628	BL-TLN0124796CMACGM.scr	39
PID 2628 wrote to memory of 2884	2628	BL-TLN0124796CMACGM.scr	39
PID 2628 wrote to memory of 2884	2628	BL-TLN0124796CMACGM.scr	39
PID 2628 wrote to memory of 2884	2628	BL-TLN0124796CMACGM.scr	39
PID 2628 wrote to memory of 2884	2628	BL-TLN0124796CMACGM.scr	39
PID 2628 wrote to memory of 2588	2628	BL-TLN0124796CMACGM.scr	40
PID 2628 wrote to memory of 2588	2628	BL-TLN0124796CMACGM.scr	40
PID 2628 wrote to memory of 2588	2628	BL-TLN0124796CMACGM.scr	40
PID 2628 wrote to memory of 2588	2628	BL-TLN0124796CMACGM.scr	40
PID 2628 wrote to memory of 2588	2628	BL-TLN0124796CMACGM.scr	40

C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr
"C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr" /S
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2428
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\LdtceRaylJq.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2808
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LdtceRaylJq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB4BF.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2836
- C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr
  "C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2628
- - C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr
    C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr /stext "C:\Users\Admin\AppData\Local\Temp\erobvwvunrlijyi"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1108
- - C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr
    C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr /stext "C:\Users\Admin\AppData\Local\Temp\oltlwogvbzdnteeleq"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2884
- - C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr
    C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr /stext "C:\Users\Admin\AppData\Local\Temp\ynhewhzppivsvsspnawoz"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2588

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
17a25ae3c7e87f2b54465ca21cf139cb

SHA1
9661cb13960b0ebbe7f2a58a47e58db317e7e994

SHA256
64e78c5b34cc7aae11fc894ee817ccba2cc82d2028ab09b869ccfb531cf51d00

SHA512
9ef66c0962edff0a8fdb08361fbf0a2b74eeeeed0563e138f5289f874df5f23a9f0e9c980c1942e305914d183963ec7507dc9038f34e4610470db929b5d13bcc

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB4BF.tmp

Filesize
1KB

MD5
57ca5d05927f4956c9d71f4c0507d168

SHA1
192239fc95358437f3e738e2dc9998423664dd78

SHA256
0eb4f30282fbbe1c4b295f665f8e49a8f516f37a35746f8800476c80b823a8e0

SHA512
5f87e34c82235268aca321d5983f4f5dbc784f453bb5fb5204e9f0a03fac99dbd7b860e13d364ffa49d516f29efe37f8eee28320dd83e853b6ca1b4f62ad2c27

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
f04bc46bdd25b6bbccb5d01f4e622a32

SHA1
56743fca34bf763dd4bb14b781ab6bee6df776cb

SHA256
c091863513000d669b351c93eb582679fc2cc1237b282ec9519200dd296ec19b

SHA512
59eb5084c894a9697caa4a3f92f7102b7102596a1f5c9f3f9589c93785e3f25ed0e504e020e710a08e4a7a2258373e91a298b10c910ce07c21fe89f63ae63d79

Download Submit
memory/1108-56-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1108-57-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1108-61-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2368-0-0x0000000073EDE000-0x0000000073EDF000-memory.dmp

Filesize
4KB

Download
memory/2368-4-0x0000000073EDE000-0x0000000073EDF000-memory.dmp

Filesize
4KB

Download
memory/2368-5-0x0000000073ED0000-0x00000000745BE000-memory.dmp

Filesize
6.9MB

Download
memory/2368-6-0x0000000005440000-0x0000000005500000-memory.dmp

Filesize
768KB

Download
memory/2368-41-0x0000000073ED0000-0x00000000745BE000-memory.dmp

Filesize
6.9MB

Download
memory/2368-3-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2368-2-0x0000000073ED0000-0x00000000745BE000-memory.dmp

Filesize
6.9MB

Download
memory/2368-1-0x0000000000E30000-0x0000000000F1A000-memory.dmp

Filesize
936KB

Download
memory/2588-66-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2588-63-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2588-65-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2628-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-110-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-109-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-73-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2628-76-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2628-77-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2628-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-87-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2884-60-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2884-59-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2884-64-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download