remcos | 453b0540237bb16db04d003e1e608ff89d1d749d8e2828edfbd1cd1b97b5ff75

General

Target

1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
Size

481KB
MD5

b109b6b9485443491013e40fcc73ae5c
SHA1

5834449d4c050d5728118fc8db318ba4f4d10044
SHA256

453b0540237bb16db04d003e1e608ff89d1d749d8e2828edfbd1cd1b97b5ff75
SHA512

aac6c408e60a6dbe4fc551cb8fc1120e8414eaf38cb751e066253680990c1256247c5f97a8b5e9cc62fb46ae34de063820d69674ab78831a0ecc78d00b6d661b
SSDEEP

12288:buD09AUkNIGBYYv4eK13x13nZHSRVMf139F5wIB7+IwtHwBtVxbesvZDSy+DY:e09AfNIEYsunZvZ19ZNs

Score

10^/10

remcos remotehost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

brideeded.duckdns.org:3421

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-QYW18E
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
Remcos family
remcos

Detected Nirsoft tools 8 IoCs

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

resource	yara_rule
behavioral2/memory/3988-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3988-24-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/592-21-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/368-16-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3988-15-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/592-12-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/368-14-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/368-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/592-21-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/592-12-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/368-16-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/368-14-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/368-26-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4512 set thread context of 368	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	83
PID 4512 set thread context of 592	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	84
PID 4512 set thread context of 3988	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	85

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	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
368	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
368	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
3988	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
3988	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
368	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
368	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3988	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4512 wrote to memory of 368	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	83
PID 4512 wrote to memory of 368	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	83
PID 4512 wrote to memory of 368	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	83
PID 4512 wrote to memory of 592	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	84
PID 4512 wrote to memory of 592	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	84
PID 4512 wrote to memory of 592	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	84
PID 4512 wrote to memory of 3988	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	85
PID 4512 wrote to memory of 3988	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	85
PID 4512 wrote to memory of 3988	4512	1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe	85

C:\Users\Admin\AppData\Local\Temp\1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4512
- C:\Users\Admin\AppData\Local\Temp\1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\stvtswjz"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:368
- C:\Users\Admin\AppData\Local\Temp\1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\cwjmkputxea"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:592
- C:\Users\Admin\AppData\Local\Temp\1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1734707047fff7a4a195c1e77157873964de3a3a708aa4bdc0aee24f3a94bc5bd05cc323f3964.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\eqoelzfulmstkfh"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3988

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\stvtswjz

Filesize
4KB

MD5
60a0bdc1cf495566ff810105d728af4a

SHA1
243403c535f37a1f3d5f307fc3fb8bdd5cbcf6e6

SHA256
fd12da9f9b031f9fa742fa73bbb2c9265f84f49069b7c503e512427b93bce6d2

SHA512
4445f214dbf5a01d703f22a848b56866f3f37b399de503f99d40448dc86459bf49d1fa487231f23c080a559017d72bcd9f6c13562e1f0bd53c1c9a89e73306a5

Download Submit
memory/368-16-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/368-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/368-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/368-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/368-5-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/592-12-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/592-6-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/592-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/592-8-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/592-7-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/592-21-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3988-24-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3988-9-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3988-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3988-15-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3988-11-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4512-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4512-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4512-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4512-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4512-29-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4512-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4512-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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