remcos | eae7b495595a35967e1ead0f4bf3142817a19515fb2a8f09198e644410eef9c3

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 8 IoCs

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

resource	yara_rule
behavioral2/memory/2060-21-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2060-17-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2060-16-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2368-15-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2368-12-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/5048-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/5048-11-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2368-25-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2060-21-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2060-17-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2060-16-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2368-15-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2368-12-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2368-25-0x0000000000400000-0x0000000000478000-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-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3180 set thread context of 2368	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	87
PID 3180 set thread context of 2060	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	88
PID 3180 set thread context of 5048	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	89

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
5048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
5048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
2368	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
2368	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
2368	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
2368	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5048	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3180 wrote to memory of 2368	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	87
PID 3180 wrote to memory of 2368	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	87
PID 3180 wrote to memory of 2368	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	87
PID 3180 wrote to memory of 2060	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	88
PID 3180 wrote to memory of 2060	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	88
PID 3180 wrote to memory of 2060	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	88
PID 3180 wrote to memory of 5048	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	89
PID 3180 wrote to memory of 5048	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	89
PID 3180 wrote to memory of 5048	3180	e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe	89

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:3180
- C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
  C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe /stext "C:\Users\Admin\AppData\Local\Temp\sufrnjwzjbtnmlikxtqinzcu"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2368
- C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
  C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe /stext "C:\Users\Admin\AppData\Local\Temp\cokkobgbxjlsxawooekkqlxdpzy"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:2060
- C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe
  C:\Users\Admin\AppData\Local\Temp\e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda.exe /stext "C:\Users\Admin\AppData\Local\Temp\frycouzulsdfzgtsypxlbqruqfihium"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5048

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\loat\logs.dat

Filesize
144B

MD5
ed6a32834b37b0a225157e4d0b607657

SHA1
6055f6baaf50ab9c6961959cd5d1660eef0622d3

SHA256
7c282d21116dfa9214dce71ed60ee3b7d1890e4b08e07443f33d1f68e777dcd7

SHA512
01ceb8ed4370939aee98002efcea0ed04c1253106b400944eba578ee90f0633fd1467d552e790bc116aa2ed5ee0c0f6837235af1f4e107e453e3ef479ce7a837

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

Filesize
4KB

MD5
c7ac5a21cac5bd5580a6e28112212613

SHA1
0a256177c387053fec680e599bcb63729a16c161

SHA256
89e0e7dc8ad418f8613610b71d0c140247e26a5f9a453ee255b1467fb80f15ff

SHA512
753675a75b643132e50175d67589a3952cb5154a7e51c11883b2e28bf4fe406afbaed88e61575cc114156e41ed5c587b0f76845e6d20ddf922e775bfff3f0b43

Download Submit
memory/2060-5-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2060-6-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2060-21-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2060-17-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2060-16-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2368-7-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2368-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2368-15-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2368-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2368-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3180-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3180-31-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3180-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3180-28-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3180-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5048-11-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5048-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5048-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5048-8-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

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