remcos | 1cb551acf0990344e1a4f35a13ea63b7888f6287d54040ab071567fbc13e9856

Analysis

max time kernel
149s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-09-2024 01:12

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General

Target

9582023 Diesel Power Plant.exe
Size

925KB
MD5

c389b87b78df960f50d0848ccff471a6
SHA1

c0a4c51af56dd5a3c5472ee86d3388a56e1cb901
SHA256

5bf25358184f7ddd5da889cee29f7adb0f8db9aa9c130b8c83a93f616919fb9d
SHA512

5d5681ff306a71856549674c8dbca00e6ac552b60dae822e356d5e189403de3cbac181b47e64293b2cd95f46f30c9b7f8f4c16eac0def188b6d98445b55a1b1c
SSDEEP

24576:fMlPuJwI0Xvuwl2wfnV4nG6vv1BIfrlu6cZVp:fM1CwpWwQwfyG6vv1BB

Score

10^/10

remcos remotehost collection discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

www.drechftankholding.com: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
dfgh
mouse_option
false
mutex
Rmc-8J6PG9
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

Detected Nirsoft tools 3 IoCs

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

resource	yara_rule
behavioral1/memory/2916-61-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2868-57-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2212-56-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2212-56-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2868-57-0x0000000000400000-0x0000000000478000-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
2824	powershell.exe
2968	powershell.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2636 set thread context of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 3044 set thread context of 2868	3044	vbc.exe	38
PID 3044 set thread context of 2212	3044	vbc.exe	39
PID 3044 set thread context of 2916	3044	vbc.exe	40

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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9582023 Diesel Power Plant.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

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
2704	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2636	9582023 Diesel Power Plant.exe
2636	9582023 Diesel Power Plant.exe
2824	powershell.exe
2968	powershell.exe
2868	vbc.exe
2868	vbc.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3044	vbc.exe
3044	vbc.exe
3044	vbc.exe
3044	vbc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2636	9582023 Diesel Power Plant.exe
Token: SeDebugPrivilege	2824	powershell.exe
Token: SeDebugPrivilege	2968	powershell.exe
Token: SeDebugPrivilege	2916	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3044	vbc.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 2968	2636	9582023 Diesel Power Plant.exe	30
PID 2636 wrote to memory of 2968	2636	9582023 Diesel Power Plant.exe	30
PID 2636 wrote to memory of 2968	2636	9582023 Diesel Power Plant.exe	30
PID 2636 wrote to memory of 2968	2636	9582023 Diesel Power Plant.exe	30
PID 2636 wrote to memory of 2824	2636	9582023 Diesel Power Plant.exe	32
PID 2636 wrote to memory of 2824	2636	9582023 Diesel Power Plant.exe	32
PID 2636 wrote to memory of 2824	2636	9582023 Diesel Power Plant.exe	32
PID 2636 wrote to memory of 2824	2636	9582023 Diesel Power Plant.exe	32
PID 2636 wrote to memory of 2704	2636	9582023 Diesel Power Plant.exe	33
PID 2636 wrote to memory of 2704	2636	9582023 Diesel Power Plant.exe	33
PID 2636 wrote to memory of 2704	2636	9582023 Diesel Power Plant.exe	33
PID 2636 wrote to memory of 2704	2636	9582023 Diesel Power Plant.exe	33
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 2636 wrote to memory of 3044	2636	9582023 Diesel Power Plant.exe	36
PID 3044 wrote to memory of 2832	3044	vbc.exe	37
PID 3044 wrote to memory of 2832	3044	vbc.exe	37
PID 3044 wrote to memory of 2832	3044	vbc.exe	37
PID 3044 wrote to memory of 2832	3044	vbc.exe	37
PID 3044 wrote to memory of 2868	3044	vbc.exe	38
PID 3044 wrote to memory of 2868	3044	vbc.exe	38
PID 3044 wrote to memory of 2868	3044	vbc.exe	38
PID 3044 wrote to memory of 2868	3044	vbc.exe	38
PID 3044 wrote to memory of 2868	3044	vbc.exe	38
PID 3044 wrote to memory of 2212	3044	vbc.exe	39
PID 3044 wrote to memory of 2212	3044	vbc.exe	39
PID 3044 wrote to memory of 2212	3044	vbc.exe	39
PID 3044 wrote to memory of 2212	3044	vbc.exe	39
PID 3044 wrote to memory of 2212	3044	vbc.exe	39
PID 3044 wrote to memory of 2916	3044	vbc.exe	40
PID 3044 wrote to memory of 2916	3044	vbc.exe	40
PID 3044 wrote to memory of 2916	3044	vbc.exe	40
PID 3044 wrote to memory of 2916	3044	vbc.exe	40
PID 3044 wrote to memory of 2916	3044	vbc.exe	40

C:\Users\Admin\AppData\Local\Temp\9582023 Diesel Power Plant.exe
"C:\Users\Admin\AppData\Local\Temp\9582023 Diesel Power Plant.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2636
- 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\9582023 Diesel Power Plant.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2968
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zZoEBpRNAx.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2824
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zZoEBpRNAx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4D65.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2704
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3044
- - 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\lsoxgnz"
    3⤵
    PID:2832
- - 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\lsoxgnz"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2868
- - 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\nmcphgkinxf"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2212
- - 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\xohihydjbfxump"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2916

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

Scripting

T1064

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Scripting

T1064

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\dfgh\logs.dat

Filesize
144B

MD5
af6984420e4e9c34cf3dbd9d5e1e8f6d

SHA1
e44ad781151e7c85a62ffc771866e8cd0228e47f

SHA256
62e5816e29cc817ab3ff361b3cde10204c01abc7240304239f3a0cbd869789a0

SHA512
53920da8fef5a5d3e06d6f07cab3b7807b67e58f3d0bfa56a04f8603ef91e50ee483b97af0aab9a3020a52dcd7adc41713203faa091bdf48105d633de5a267d8

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4D65.tmp

Filesize
1KB

MD5
79a603422d8c3c6ec8c3066ad5ffd57f

SHA1
b92db2749d13d5a1cf5875b6e351c54aee5817a5

SHA256
972b8b839813cfaf43b69e03c3a492d299ffdf38f7d291f080bf0a0883dd6a73

SHA512
14b71f557fa0b2dd6c3b4e72a87a86c3c58cec26f198a06eb420d9a25a6fa2a5c0b482b0f41976c3b32d6867f25d6f7b92dc5b537eb59fb26f4e2c7019295e0a

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

Filesize
7KB

MD5
ee0d703fb66770daa7ef5f37c06ead09

SHA1
85843138af36710932df2a00c90b767cc09af9c8

SHA256
7565bb502127fab08fc7ce557edfef7a3ea1d7114ababbea061cc925f54315ba

SHA512
40f0b17b4888fb09e1dafc4d64f93f53e58e11f0ff4fbd3dff41b8628e82a1728bb424e103ece4aca987d65efc8b110b6e7290d1a6768f424dd0aa2d59c12579

Download Submit
memory/2212-56-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2212-53-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2212-55-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2636-42-0x0000000074130000-0x000000007481E000-memory.dmp

Filesize
6.9MB

Download
memory/2636-6-0x00000000058C0000-0x0000000005980000-memory.dmp

Filesize
768KB

Download
memory/2636-4-0x000000007413E000-0x000000007413F000-memory.dmp

Filesize
4KB

Download
memory/2636-3-0x0000000000620000-0x0000000000630000-memory.dmp

Filesize
64KB

Download
memory/2636-2-0x0000000074130000-0x000000007481E000-memory.dmp

Filesize
6.9MB

Download
memory/2636-1-0x0000000001080000-0x000000000116C000-memory.dmp

Filesize
944KB

Download
memory/2636-0-0x000000007413E000-0x000000007413F000-memory.dmp

Filesize
4KB

Download
memory/2636-5-0x0000000074130000-0x000000007481E000-memory.dmp

Filesize
6.9MB

Download
memory/2868-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2868-57-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2868-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2916-59-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2916-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2916-60-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3044-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-35-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/3044-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-68-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3044-72-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3044-71-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3044-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-92-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3044-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download