remcos | f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220

Analysis

max time kernel
148s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
17-05-2024 04:26

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General

Target

Sample Order May009.exe
Size

1.5MB
MD5

eb6fbf94ac91b528b6c2fef7c6dd79af
SHA1

4f5079f8402b5a935cc9dcf2fd02ee98dabf95ed
SHA256

f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220
SHA512

2078931c8643f000560734eec6d73b88382f16e9a5db6a48e151e0bee9cbd53f87384bd8731b248eb8e446a1cedf2041e81528fe5a73bf07a800f6b5c76696b2
SSDEEP

24576:jElEJSNI3rQ9891j8F1Oo/42VuKZWaKoPDfK6Dy6pPnltz1k:QlSaI3ruUjCT/huroPVy65lh1

Score

10^/10

remcos remcoco collection execution rat

Malware Config

Extracted

Family

remcos

Botnet

Remcoco

173.212.199.134:8808

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-PMP82R
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

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/2556-56-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/2344-60-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2556-56-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/816-61-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2344-60-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

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

Processes:

powershell.exepowershell.exe

pid process

2576 powershell.exe
2728 powershell.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
2576	powershell.exe
2728	powershell.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Sample Order May009.exevbc.exe

description	pid	process	target process
PID 2924 set thread context of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2904 set thread context of 2344	2904	vbc.exe	vbc.exe
PID 2904 set thread context of 2556	2904	vbc.exe	vbc.exe
PID 2904 set thread context of 816	2904	vbc.exe	vbc.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2512 schtasks.exe

pid	process
2512	schtasks.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

Sample Order May009.exepowershell.exepowershell.exevbc.exe

pid	process
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2924	Sample Order May009.exe
2728	powershell.exe
2576	powershell.exe
2924	Sample Order May009.exe
2344	vbc.exe
2344	vbc.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exe

pid process

2904 vbc.exe
2904 vbc.exe
2904 vbc.exe
2904 vbc.exe
2904 vbc.exe

pid	process
2904	vbc.exe
2904	vbc.exe
2904	vbc.exe
2904	vbc.exe
2904	vbc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Sample Order May009.exepowershell.exepowershell.exevbc.exe

description	pid	process
Token: SeDebugPrivilege	2924	Sample Order May009.exe
Token: SeDebugPrivilege	2728	powershell.exe
Token: SeDebugPrivilege	2576	powershell.exe
Token: SeDebugPrivilege	816	vbc.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

Sample Order May009.exevbc.exe

description	pid	process	target process
PID 2924 wrote to memory of 2576	2924	Sample Order May009.exe	powershell.exe
PID 2924 wrote to memory of 2576	2924	Sample Order May009.exe	powershell.exe
PID 2924 wrote to memory of 2576	2924	Sample Order May009.exe	powershell.exe
PID 2924 wrote to memory of 2576	2924	Sample Order May009.exe	powershell.exe
PID 2924 wrote to memory of 2728	2924	Sample Order May009.exe	powershell.exe
PID 2924 wrote to memory of 2728	2924	Sample Order May009.exe	powershell.exe
PID 2924 wrote to memory of 2728	2924	Sample Order May009.exe	powershell.exe
PID 2924 wrote to memory of 2728	2924	Sample Order May009.exe	powershell.exe
PID 2924 wrote to memory of 2512	2924	Sample Order May009.exe	schtasks.exe
PID 2924 wrote to memory of 2512	2924	Sample Order May009.exe	schtasks.exe
PID 2924 wrote to memory of 2512	2924	Sample Order May009.exe	schtasks.exe
PID 2924 wrote to memory of 2512	2924	Sample Order May009.exe	schtasks.exe
PID 2924 wrote to memory of 2256	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2256	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2256	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2256	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2924 wrote to memory of 2904	2924	Sample Order May009.exe	vbc.exe
PID 2904 wrote to memory of 2224	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2224	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2224	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2224	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2348	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2348	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2348	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2348	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2344	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2344	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2344	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2344	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2344	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2556	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2556	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2556	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2556	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 2556	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 816	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 816	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 816	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 816	2904	vbc.exe	vbc.exe
PID 2904 wrote to memory of 816	2904	vbc.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\Sample Order May009.exe
"C:\Users\Admin\AppData\Local\Temp\Sample Order May009.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2924
- 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\Sample Order May009.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2576
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OvSlUx.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2728
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OvSlUx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8B01.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2512
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:2256
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2904
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\bgwpwfpnoydprzqijtumtdeokd"
    3⤵
    PID:2224
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\bgwpwfpnoydprzqijtumtdeokd"
    3⤵
    PID:2348
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\bgwpwfpnoydprzqijtumtdeokd"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2344
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\lbjiwxahcgvutgemsdgneqqxtkldv"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:2556
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\vdpaxqliqonheuaqbotppvlocyveoazv"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:816

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scripting

T1064

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Scripting

T1064

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8B01.tmp

Filesize
1KB

MD5
ab45523fac788f46a36278378b4e9fe9

SHA1
cdc5e1cb56e25d749d8ad741b4b201a09b3c846e

SHA256
de7edd73df21692f22c5fd1a0c32958ae24b11a92b98e9cf159256eb5e27004a

SHA512
c12e5f3f84e1f59c7eaf779b3e4e712c84272abcdd72692e14f3e1c3869299f3fe9d9239607c7bc81cdaaafabd43656436ed7195d9ed5ce33dccf84022326232

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\LI1HNXDELAPZH2VSC04N.temp

Filesize
7KB

MD5
c4f9bf1d7b265131d58431e9345b84be

SHA1
75193d4f29330631bf98ab255e0e313daa17b53a

SHA256
37b2630e514bd92d4a92279edec03e0eec6fe35c4f7cd3202e982a23d78f7a98

SHA512
93b6a40282490729837b950b5c8d93b621a7152d1c2b7880d5d59b9666948bd607fea4dd4039aa938b62becb8645c4af68379872a7b9a9f2736be64cbb62d894

Download Submit
memory/816-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/816-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/816-59-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2344-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2344-50-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2344-60-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2344-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2556-55-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2556-56-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2556-53-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2904-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-71-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2904-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-36-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2904-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-70-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2904-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2904-67-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2924-1-0x00000000002A0000-0x000000000041C000-memory.dmp

Filesize
1.5MB

Download
memory/2924-2-0x0000000074C30000-0x000000007531E000-memory.dmp

Filesize
6.9MB

Download
memory/2924-3-0x0000000000450000-0x000000000046E000-memory.dmp

Filesize
120KB

Download
memory/2924-4-0x0000000000480000-0x0000000000490000-memory.dmp

Filesize
64KB

Download
memory/2924-5-0x0000000005580000-0x0000000005640000-memory.dmp

Filesize
768KB

Download
memory/2924-6-0x0000000074C3E000-0x0000000074C3F000-memory.dmp

Filesize
4KB

Download
memory/2924-7-0x0000000074C30000-0x000000007531E000-memory.dmp

Filesize
6.9MB

Download
memory/2924-0-0x0000000074C3E000-0x0000000074C3F000-memory.dmp

Filesize
4KB

Download
memory/2924-41-0x0000000074C30000-0x000000007531E000-memory.dmp

Filesize
6.9MB

Download