remcos | d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04/09/2024, 14:16

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General

Target

AWB81311002907.exe
Size

931KB
MD5

c8b97aad582adb6ccddc6f3e74bda215
SHA1

bbf2e45bd5af0695f5f82fed5728a480a7fd4c04
SHA256

d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34
SHA512

7ede8146da39ea716cd6c64f3a60ca324566c3000cb5c1275f5f1563cca726ec8b97420c7e4620f4fe998f8542896bb99294cef83a7e8bfae2e1e46fb4bbc100
SSDEEP

24576:9elw4o5E6Gkf1CGkuH2sz6rtlHa08qsCJAUke0O:9elw4o5E+C1ttl605X3ko

Score

10^/10

remcos sept. 04c collection credential_access discovery execution rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

Sept. 04C

154.216.20.211:6902

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-YGC9WY
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 3 IoCs

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

resource	yara_rule
behavioral1/memory/2188-55-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1492-60-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2200-61-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1492-60-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2188-55-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2572	powershell.exe
2936	powershell.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-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	AWB81311002907.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2764 set thread context of 1704	2764	AWB81311002907.exe	36
PID 1704 set thread context of 2188	1704	AWB81311002907.exe	37
PID 1704 set thread context of 1492	1704	AWB81311002907.exe	38
PID 1704 set thread context of 2200	1704	AWB81311002907.exe	39

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 8 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	AWB81311002907.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AWB81311002907.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AWB81311002907.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AWB81311002907.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AWB81311002907.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2956	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2936	powershell.exe
2572	powershell.exe
2188	AWB81311002907.exe
2188	AWB81311002907.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1704	AWB81311002907.exe
1704	AWB81311002907.exe
1704	AWB81311002907.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2572	powershell.exe
Token: SeDebugPrivilege	2936	powershell.exe
Token: SeDebugPrivilege	2200	AWB81311002907.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1704	AWB81311002907.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2764 wrote to memory of 2572	2764	AWB81311002907.exe	30
PID 2764 wrote to memory of 2572	2764	AWB81311002907.exe	30
PID 2764 wrote to memory of 2572	2764	AWB81311002907.exe	30
PID 2764 wrote to memory of 2572	2764	AWB81311002907.exe	30
PID 2764 wrote to memory of 2936	2764	AWB81311002907.exe	32
PID 2764 wrote to memory of 2936	2764	AWB81311002907.exe	32
PID 2764 wrote to memory of 2936	2764	AWB81311002907.exe	32
PID 2764 wrote to memory of 2936	2764	AWB81311002907.exe	32
PID 2764 wrote to memory of 2956	2764	AWB81311002907.exe	33
PID 2764 wrote to memory of 2956	2764	AWB81311002907.exe	33
PID 2764 wrote to memory of 2956	2764	AWB81311002907.exe	33
PID 2764 wrote to memory of 2956	2764	AWB81311002907.exe	33
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 2764 wrote to memory of 1704	2764	AWB81311002907.exe	36
PID 1704 wrote to memory of 2188	1704	AWB81311002907.exe	37
PID 1704 wrote to memory of 2188	1704	AWB81311002907.exe	37
PID 1704 wrote to memory of 2188	1704	AWB81311002907.exe	37
PID 1704 wrote to memory of 2188	1704	AWB81311002907.exe	37
PID 1704 wrote to memory of 2188	1704	AWB81311002907.exe	37
PID 1704 wrote to memory of 1492	1704	AWB81311002907.exe	38
PID 1704 wrote to memory of 1492	1704	AWB81311002907.exe	38
PID 1704 wrote to memory of 1492	1704	AWB81311002907.exe	38
PID 1704 wrote to memory of 1492	1704	AWB81311002907.exe	38
PID 1704 wrote to memory of 1492	1704	AWB81311002907.exe	38
PID 1704 wrote to memory of 2200	1704	AWB81311002907.exe	39
PID 1704 wrote to memory of 2200	1704	AWB81311002907.exe	39
PID 1704 wrote to memory of 2200	1704	AWB81311002907.exe	39
PID 1704 wrote to memory of 2200	1704	AWB81311002907.exe	39
PID 1704 wrote to memory of 2200	1704	AWB81311002907.exe	39

C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe
"C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2572
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\iVWcGN.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2936
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iVWcGN" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC41A.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2956
- C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe
  "C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1704
- - C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe
    C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe /stext "C:\Users\Admin\AppData\Local\Temp\fybezcxdulyatetnfuwkgzdxaxmdxux"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2188
- - C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe
    C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe /stext "C:\Users\Admin\AppData\Local\Temp\psgxzvixitqfvlprofiereqojdvmyfvzyd"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:1492
- - C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe
    C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe /stext "C:\Users\Admin\AppData\Local\Temp\znthan"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2200

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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
726a1e0de5ba073c3410f58757dd5f37

SHA1
01276927d60b2825197f85c402f04b9690ef1d4c

SHA256
1276a9a4224010c2108ff4adf00c3d7147497129ccbf23699fbaf3484a09ada1

SHA512
ddcb1be5b81782ba0db593582961d334ab7a2ec91ec1b439f736ac6e17f44742fea75261164e36e5bb46af4e3095f7f829fb7c15ad93eef2781ac8b2916ff8d0

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC41A.tmp

Filesize
1KB

MD5
e67cf4eddcd747efe54661357d13358e

SHA1
3542abd98086c253d799ac8feade2b8c7c850259

SHA256
bb25112ddf85019135581518cce488d81af2f8a75858cfc754d01825c8033b5e

SHA512
853fc81c2b179c5a98f21531d95fa1d56f909368ded62568db0cc9cd5980a685a5daf92ca10522c2976ef7f176e7c481486582542ab40096a76c5471921b2dfb

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
ec3540b4ec1b85748aee6f912a2acd52

SHA1
44c5dc71356e8e28f7ada7f9ba827c27e23c2212

SHA256
6f19caadef991825ed139bfb12f9c143975f6612c5fcf03a5671a1d08939615e

SHA512
2c14fa1365bc2a5996c8641bd629bd275cc7da33afb32fec6b2d07c690b72bfac1bef6b30ba1928acbb3451d917733831d958a75fcd6909bb9190971a3f96838

Download Submit
memory/1492-60-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1492-56-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1492-54-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1704-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-68-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1704-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1704-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1704-72-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1704-71-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2188-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2188-50-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2188-52-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2188-55-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2200-57-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2200-59-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2200-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2200-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2764-6-0x0000000005010000-0x00000000050D0000-memory.dmp

Filesize
768KB

Download
memory/2764-4-0x00000000742FE000-0x00000000742FF000-memory.dmp

Filesize
4KB

Download
memory/2764-3-0x00000000002F0000-0x0000000000308000-memory.dmp

Filesize
96KB

Download
memory/2764-1-0x0000000001240000-0x000000000132C000-memory.dmp

Filesize
944KB

Download
memory/2764-5-0x00000000742F0000-0x00000000749DE000-memory.dmp

Filesize
6.9MB

Download
memory/2764-2-0x00000000742F0000-0x00000000749DE000-memory.dmp

Filesize
6.9MB

Download
memory/2764-0-0x00000000742FE000-0x00000000742FF000-memory.dmp

Filesize
4KB

Download
memory/2764-41-0x00000000742F0000-0x00000000749DE000-memory.dmp

Filesize
6.9MB

Download