remcos | e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda

General

Target

e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
Size

483KB
MD5

fbfed304aa0320505a322b92eb198d68
SHA1

033eb7a422a4d4d5e61d537a4b8225b335ec153c
SHA256

e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda
SHA512

d4ebaa88fdac70c8dfe486ffd6796848f7f2e9ca89baf5131dde3e9e58b85f7d9eb96da33c00f7500903bc065e0bfc87eb34823f7428c6989424c82c14520a41
SSDEEP

12288:wTlrYw1RUh3NFn+N5WfIQIjbs/ZBOoT4:ApRUh3NDfIQIjeZ

Score

10^/10

remcos remotehost collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.90.89.98:8243

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
true
install_flag
false
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
loat
keylog_path
%Temp%
mouse_option
false
mutex
Rmc-O0U3JA
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 9 IoCs

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

resource	yara_rule
behavioral2/memory/3944-14-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3944-16-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4408-15-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3944-13-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2472-12-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4408-11-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2472-8-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2472-23-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4408-31-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3944-14-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3944-16-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3944-13-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4408-15-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4408-11-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4408-31-0x0000000000400000-0x0000000000478000-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-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1048 set thread context of 4408	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	95
PID 1048 set thread context of 3944	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	96
PID 1048 set thread context of 2472	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	97

System Location Discovery: System Language Discovery 1 TTPs 4 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	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4408	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
4408	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
2472	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
2472	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
4408	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
4408	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2472	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 4408	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	95
PID 1048 wrote to memory of 4408	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	95
PID 1048 wrote to memory of 4408	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	95
PID 1048 wrote to memory of 3944	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	96
PID 1048 wrote to memory of 3944	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	96
PID 1048 wrote to memory of 3944	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	96
PID 1048 wrote to memory of 2472	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	97
PID 1048 wrote to memory of 2472	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	97
PID 1048 wrote to memory of 2472	1048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	97

C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
"C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
  C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe /stext "C:\Users\Admin\AppData\Local\Temp\ldllkoxtkwriyzwi"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4408
- C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
  C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe /stext "C:\Users\Admin\AppData\Local\Temp\vxrelgpuyejvifsmijq"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:3944
- C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
  C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe /stext "C:\Users\Admin\AppData\Local\Temp\gzewlzaommballgyzucsieq"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2472

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4148,i,7447299413640964517,4240724842020506306,262144 --variations-seed-version --mojo-platform-channel-handle=3884 /prefetch:8
1⤵
PID:2080

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
4KB

MD5
cda83eba5a004554ccdc061fd3df499c

SHA1
58ff2ecb9d47be10335e104896c87c62dc328523

SHA256
e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

SHA512
f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

Download Submit
C:\Users\Admin\AppData\Local\Temp\loat\logs.dat

Filesize
144B

MD5
deeb55d3696a804ff0f4a96aa01e8fb9

SHA1
605444c64e61c61a8ab6413168cebfc40fc60baa

SHA256
3f4582a9a01b4803b6be5153abd618b9d4ceda8e43348aabc1e67a86248adec1

SHA512
462659956f2da945f93cf2a70458c5cf56495e255c59fb45ce2f7c333780aa33b6002d73d3119334dce044e8d5cab172193a943aac52bcbba8a57f338b66ec40

Download Submit
memory/1048-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1048-37-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1048-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1048-38-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1048-34-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2472-7-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2472-23-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2472-8-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2472-12-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2472-4-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3944-13-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3944-10-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3944-16-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3944-14-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3944-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4408-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4408-31-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4408-11-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4408-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4408-15-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

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