remcos | 673a717536312e14ce4541462f98c0a6252c2cbfa9b3271e8776b10067201b6f

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
01/09/2024, 01:26

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General

Target

92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
Size

1.4MB
MD5

6a059d39861fe040d2ec45e74daacf34
SHA1

3023e95579019dffc86596db8e5fc27b2f574b65
SHA256

92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa
SHA512

654b1554789984c3fe0453a0afa7a8f078d78def8d9786b34d9f340452e37b6d880ac70fce3953a8744dce79a16bd6a0a4052b43aefc4727a46037e1885d6bf7
SSDEEP

24576:sqDEvCTbMWu7rQYlBQcBiT6rprG8a74RgPQ9QjPAZZJXjIc:sTvC/MTQYxsWR7a74RgPQ9QjeZJ

Score

10^/10

remcos remotehost collection credential_access discovery rat stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

194.169.175.190:2404

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-LBZ2BK
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 8 IoCs

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

resource	yara_rule
behavioral2/memory/3940-35-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3940-39-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4088-34-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2816-33-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4088-29-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2816-28-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3940-40-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2816-42-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4088-34-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4088-29-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2816-33-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2816-28-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2816-42-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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	svchost.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 5056 set thread context of 1692	5056	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	87
PID 1692 set thread context of 2816	1692	svchost.exe	90
PID 1692 set thread context of 4088	1692	svchost.exe	91
PID 1692 set thread context of 3940	1692	svchost.exe	92

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2816	svchost.exe
2816	svchost.exe
3940	svchost.exe
3940	svchost.exe
2816	svchost.exe
2816	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
5056	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
1692	svchost.exe
1692	svchost.exe
1692	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3940	svchost.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
5056	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
5056	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
5056	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
5056	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 5056 wrote to memory of 1692	5056	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	87
PID 5056 wrote to memory of 1692	5056	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	87
PID 5056 wrote to memory of 1692	5056	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	87
PID 5056 wrote to memory of 1692	5056	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	87
PID 1692 wrote to memory of 2816	1692	svchost.exe	90
PID 1692 wrote to memory of 2816	1692	svchost.exe	90
PID 1692 wrote to memory of 2816	1692	svchost.exe	90
PID 1692 wrote to memory of 2816	1692	svchost.exe	90
PID 1692 wrote to memory of 4088	1692	svchost.exe	91
PID 1692 wrote to memory of 4088	1692	svchost.exe	91
PID 1692 wrote to memory of 4088	1692	svchost.exe	91
PID 1692 wrote to memory of 4088	1692	svchost.exe	91
PID 1692 wrote to memory of 3940	1692	svchost.exe	92
PID 1692 wrote to memory of 3940	1692	svchost.exe	92
PID 1692 wrote to memory of 3940	1692	svchost.exe	92
PID 1692 wrote to memory of 3940	1692	svchost.exe	92

C:\Users\Admin\AppData\Local\Temp\92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
"C:\Users\Admin\AppData\Local\Temp\92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:5056
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\emttyxnepcmegtehehycuspuffiushmj"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2816
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\ooye"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:4088
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\qidwsirz"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\emttyxnepcmegtehehycuspuffiushmj

Filesize
4KB

MD5
2538ec9e8425a905937573069b77d4c2

SHA1
ad0c2b7aff4382e23444d26adac96d9697b849f3

SHA256
29338949fae4c88a972837aae898529e4c7a2c4df35982eef2f8d7b602c17f4e

SHA512
a867a471b837b9c662528ee7a5904e8fe7b1eebb277b8a7fe4d4caf423fae914baf692bb5004c02ddb539b157d63326178467e28b03aa92a533cda19155d501c

Download Submit
memory/1692-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-44-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1692-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-47-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1692-48-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1692-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2816-22-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2816-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2816-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2816-42-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2816-33-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3940-39-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3940-30-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3940-32-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3940-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3940-40-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4088-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4088-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4088-27-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4088-24-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5056-10-0x0000000002820000-0x0000000002824000-memory.dmp

Filesize
16KB

Download