remcos | 680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb

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
11-09-2024 22:15

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General

Target

680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
Size

519KB
MD5

c08bdb833f04aa88f5b1035500fd0e2d
SHA1

3514864b019defdac263d3fcd54ded96d72743c4
SHA256

680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb
SHA512

a262042139b9e2f830afbc6e7e66e3597a6bd25d6e54b6f50e767497470dc59070a658ba9530c908a68c04410370616c7611c5cfcbd970de6a089db68e76a139
SSDEEP

12288:to+VIWBon+um+82Qx2qlM7uSibfXpzdYFcXT+/MOTjpMU5EUG13:e+VIWCn+lD2aSUXpzdwcXiUScUW

Score

10^/10

remcos remotehost collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

162.251.122.106:2404

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-A7EXAF
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/4948-51-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4868-50-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3548-49-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4868-48-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4948-43-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4868-39-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3548-38-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3548-55-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4868-50-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4868-48-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4868-39-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3548-49-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3548-38-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3548-55-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Loads dropped DLL 1 IoCs

pid	Process
4772	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

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-1-5-21-1194130065-3471212556-1656947724-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4772	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4772 set thread context of 4900	4772	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	92
PID 4900 set thread context of 3548	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	97
PID 4900 set thread context of 4868	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	98
PID 4900 set thread context of 4948	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	99

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3548	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
3548	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
4948	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
4948	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
3548	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
3548	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
4772	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4948	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4772 wrote to memory of 4900	4772	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	92
PID 4772 wrote to memory of 4900	4772	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	92
PID 4772 wrote to memory of 4900	4772	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	92
PID 4772 wrote to memory of 4900	4772	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	92
PID 4772 wrote to memory of 4900	4772	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	92
PID 4900 wrote to memory of 3548	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	97
PID 4900 wrote to memory of 3548	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	97
PID 4900 wrote to memory of 3548	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	97
PID 4900 wrote to memory of 4868	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	98
PID 4900 wrote to memory of 4868	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	98
PID 4900 wrote to memory of 4868	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	98
PID 4900 wrote to memory of 4948	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	99
PID 4900 wrote to memory of 4948	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	99
PID 4900 wrote to memory of 4948	4900	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	99

C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
"C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
  "C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4900
- - C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
    C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe /stext "C:\Users\Admin\AppData\Local\Temp\mszbnhpyifiicchhe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:3548
- - C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
    C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe /stext "C:\Users\Admin\AppData\Local\Temp\wmmtoszrwnaufjvlogtr"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:4868
- - C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
    C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe /stext "C:\Users\Admin\AppData\Local\Temp\zprehkstkvszpprpxrglavc"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4948

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
da50d7d8aacee1c4a8a808c6e9a4ae95

SHA1
8176c5168ccb875037db144725bb877ae2b2c1d3

SHA256
2b26fa5341e1acdf8fc5faad5c2727eb90116b010b501b39c04153271edaed4f

SHA512
34f07610c9c9ef55b1e78fade018bf32c7990e780935b0c0f438b360da1ac3fe9b8f98411ed23ab94c124eae14623c3f239aab388b0433bf8d1962dab198fd64

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

Filesize
4KB

MD5
ea01dd92b15d2f570f6b167dad2d1fd0

SHA1
7b89141d4c3eb2f29d096f28a9bfe66eb006224a

SHA256
0515f49138d74283f9ac1042fd1a384f715b74c2b99193454dbb0cd585097727

SHA512
0e7695aea30250a41829fa4abb681b8c3ed4c0955e18f1f9f3a5456bfb3a76f016f538e557bf29b99ab6ab48c846f9fa3c4bccd8cb5fe73099a81b5946029ec8

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsi8221.tmp\System.dll

Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

Download Submit
memory/3548-38-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3548-55-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3548-49-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3548-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3548-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4772-12-0x00000000772E1000-0x0000000077401000-memory.dmp

Filesize
1.1MB

Download
memory/4772-13-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/4772-11-0x00000000772E1000-0x0000000077401000-memory.dmp

Filesize
1.1MB

Download
memory/4868-50-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4868-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4868-37-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4868-39-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4868-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4900-63-0x0000000037590000-0x00000000375A9000-memory.dmp

Filesize
100KB

Download
memory/4900-59-0x0000000037590000-0x00000000375A9000-memory.dmp

Filesize
100KB

Download
memory/4900-31-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-28-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-89-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-86-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-83-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-25-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-22-0x00000000772E1000-0x0000000077401000-memory.dmp

Filesize
1.1MB

Download
memory/4900-21-0x00000000772E1000-0x0000000077401000-memory.dmp

Filesize
1.1MB

Download
memory/4900-17-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-16-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-15-0x0000000077385000-0x0000000077386000-memory.dmp

Filesize
4KB

Download
memory/4900-80-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-14-0x0000000077368000-0x0000000077369000-memory.dmp

Filesize
4KB

Download
memory/4900-62-0x0000000037590000-0x00000000375A9000-memory.dmp

Filesize
100KB

Download
memory/4900-65-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-68-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-71-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-74-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4900-77-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4948-51-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4948-40-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4948-41-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4948-43-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download