remcos | c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2

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
30-08-2024 09:42

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General

Target

SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
Size

26KB
MD5

a5a3902eda13fdecf1320b900d2e5395
SHA1

3ec2b7adde1d0b5ef806f079bc0d669e32cb65ca
SHA256

c1870f3378e10b41656fdb1ad97149e8ac40264f5887cb917d266eb036c30bc2
SHA512

e40af0c9a62ba2b47801fb164a608da0829bc1c6d6b64a985af64721d51f9400527e5aef3345409ffb31152582444d524789931b5a9fcf9edacf69424fed765b
SSDEEP

768:cACzsa2x1nyUuHMFSlWXokQPhbOcjC49N0b:r0b2x1nyUuHMgIXokQPgcjC49NG

Score

10^/10

remcos marshal11 collection credential_access discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

marshal11

185.150.191.117:4609

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-O92MFO
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

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 2428 created 3572	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	56

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 4 IoCs

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

resource	yara_rule
behavioral2/memory/4008-1114-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/656-1113-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4008-1120-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/656-1122-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4008-1114-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4008-1120-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/656-1113-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/656-1122-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\windowsm = "C:\\Users\\Admin\\AppData\\Roaming\\windowsm.exe"	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2428 set thread context of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 4100 set thread context of 656	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	96
PID 4100 set thread context of 4008	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	98
PID 4100 set thread context of 5028	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	99

System Location Discovery: System Language Discovery 1 TTPs 5 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	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
656	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
656	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
5028	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
5028	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
656	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
656	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
Token: SeDebugPrivilege	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
Token: SeDebugPrivilege	5028	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 2428 wrote to memory of 4100	2428	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	93
PID 4100 wrote to memory of 656	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	96
PID 4100 wrote to memory of 656	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	96
PID 4100 wrote to memory of 656	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	96
PID 4100 wrote to memory of 656	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	96
PID 4100 wrote to memory of 1188	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	97
PID 4100 wrote to memory of 1188	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	97
PID 4100 wrote to memory of 1188	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	97
PID 4100 wrote to memory of 4008	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	98
PID 4100 wrote to memory of 4008	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	98
PID 4100 wrote to memory of 4008	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	98
PID 4100 wrote to memory of 4008	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	98
PID 4100 wrote to memory of 5028	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	99
PID 4100 wrote to memory of 5028	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	99
PID 4100 wrote to memory of 5028	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	99
PID 4100 wrote to memory of 5028	4100	SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe	99

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3572
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2428
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4100
- - C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
    C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe /stext "C:\Users\Admin\AppData\Local\Temp\icvfuvgdrjyduirhuiwstbwlezqr"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:656
- - C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
    C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe /stext "C:\Users\Admin\AppData\Local\Temp\twaxugrffsqqeoolltjtegrcnniaqbvp"
    3⤵
    PID:1188
- - C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
    C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe /stext "C:\Users\Admin\AppData\Local\Temp\twaxugrffsqqeoolltjtegrcnniaqbvp"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:4008
- - C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe
    C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.5166.30540.exe /stext "C:\Users\Admin\AppData\Local\Temp\dyfi"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5028

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 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\icvfuvgdrjyduirhuiwstbwlezqr

Filesize
4KB

MD5
2538ec9e8425a905937573069b77d4c2

SHA1
ad0c2b7aff4382e23444d26adac96d9697b849f3

SHA256
29338949fae4c88a972837aae898529e4c7a2c4df35982eef2f8d7b602c17f4e

SHA512
a867a471b837b9c662528ee7a5904e8fe7b1eebb277b8a7fe4d4caf423fae914baf692bb5004c02ddb539b157d63326178467e28b03aa92a533cda19155d501c

Download Submit
memory/656-1113-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/656-1122-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2428-0-0x000000007514E000-0x000000007514F000-memory.dmp

Filesize
4KB

Download
memory/2428-1-0x0000000000750000-0x000000000075E000-memory.dmp

Filesize
56KB

Download
memory/2428-2-0x0000000075140000-0x00000000758F0000-memory.dmp

Filesize
7.7MB

Download
memory/2428-3-0x0000000006300000-0x000000000641E000-memory.dmp

Filesize
1.1MB

Download
memory/2428-9-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-4-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-17-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-31-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-41-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-65-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-63-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-61-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-59-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-57-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-55-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-53-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-51-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-49-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-47-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-45-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-43-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-39-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-67-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-37-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-35-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-33-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-30-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-27-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-25-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-23-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-21-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-20-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-15-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-13-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-11-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-7-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-5-0x0000000006300000-0x0000000006418000-memory.dmp

Filesize
1.1MB

Download
memory/2428-1078-0x0000000075140000-0x00000000758F0000-memory.dmp

Filesize
7.7MB

Download
memory/2428-1079-0x00000000066F0000-0x0000000006788000-memory.dmp

Filesize
608KB

Download
memory/2428-1080-0x00000000065C0000-0x000000000660C000-memory.dmp

Filesize
304KB

Download
memory/2428-1081-0x0000000007F00000-0x00000000084A4000-memory.dmp

Filesize
5.6MB

Download
memory/2428-1082-0x0000000007990000-0x00000000079E4000-memory.dmp

Filesize
336KB

Download
memory/2428-1086-0x000000007514E000-0x000000007514F000-memory.dmp

Filesize
4KB

Download
memory/2428-1089-0x0000000075140000-0x00000000758F0000-memory.dmp

Filesize
7.7MB

Download
memory/2428-1088-0x0000000075140000-0x00000000758F0000-memory.dmp

Filesize
7.7MB

Download
memory/2428-1093-0x0000000075140000-0x00000000758F0000-memory.dmp

Filesize
7.7MB

Download
memory/2428-1096-0x0000000075140000-0x00000000758F0000-memory.dmp

Filesize
7.7MB

Download
memory/4008-1114-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4008-1120-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4100-1097-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4100-1130-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download