remcos | 7507bdd2d90113ba83c84b5efe0687f0e28b3909c7ef2d5ff94d2aeb4e3b78be

Analysis

max time kernel
150s
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
09-12-2024 08:41

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

MRP00108 & SDA00687.exe
Size

710KB
MD5

9fc11ee03f60a10e4a2f26edbf8fcdaf
SHA1

7ed74a2e69bd49aadc4716a420dcacea97e220d7
SHA256

30d74b831f98532075daed442b93067c7ce8846d7cbd557f43a13922840b698a
SHA512

ee2d8b55b9b2b2d3e5cf867688236299a5585be3a7516dc8027e9965b2ac7354f1bf84fcf9f998af7ed185f8b36bbfd1b1a0e6d5a41b65a6d4ed06f722382adf
SSDEEP

12288:X6qSGX12mgYtQvCOgMAwhsuiB/IhyrWQIUbMZHBeGoOO+XKCR6i0EYuCn0a:HJX1YBvCHMquiBJaQ/eBeGoOOKKCR655

Score

10^/10

remcos remotehost collection discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

157.230.51.65:2404

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-R66R8R
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/452-83-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1708-84-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3136-85-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1708-84-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3136-85-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	msiexec.exe

Blocklisted process makes network request 4 IoCs

flow	pid	Process
25	2756	msiexec.exe
31	2756	msiexec.exe
36	2756	msiexec.exe
38	2756	msiexec.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2756	msiexec.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2492	powershell.exe
2756	msiexec.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2756 set thread context of 3136	2756	msiexec.exe	102
PID 2756 set thread context of 1708	2756	msiexec.exe	104
PID 2756 set thread context of 452	2756	msiexec.exe	106

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\dommedagsbasuner\planes.pap	MRP00108 & SDA00687.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\oneupmanship.pri	MRP00108 & SDA00687.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2492	powershell.exe

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	MRP00108 & SDA00687.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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	msiexec.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
2492	powershell.exe
2492	powershell.exe
2492	powershell.exe
2492	powershell.exe
2492	powershell.exe
2492	powershell.exe
2492	powershell.exe
452	msiexec.exe
452	msiexec.exe
3136	msiexec.exe
3136	msiexec.exe
3136	msiexec.exe
3136	msiexec.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2492	powershell.exe
2756	msiexec.exe
2756	msiexec.exe
2756	msiexec.exe
2756	msiexec.exe
2756	msiexec.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeDebugPrivilege	2492	powershell.exe
Token: SeIncreaseQuotaPrivilege	2492	powershell.exe
Token: SeSecurityPrivilege	2492	powershell.exe
Token: SeTakeOwnershipPrivilege	2492	powershell.exe
Token: SeLoadDriverPrivilege	2492	powershell.exe
Token: SeSystemProfilePrivilege	2492	powershell.exe
Token: SeSystemtimePrivilege	2492	powershell.exe
Token: SeProfSingleProcessPrivilege	2492	powershell.exe
Token: SeIncBasePriorityPrivilege	2492	powershell.exe
Token: SeCreatePagefilePrivilege	2492	powershell.exe
Token: SeBackupPrivilege	2492	powershell.exe
Token: SeRestorePrivilege	2492	powershell.exe
Token: SeShutdownPrivilege	2492	powershell.exe
Token: SeDebugPrivilege	2492	powershell.exe
Token: SeSystemEnvironmentPrivilege	2492	powershell.exe
Token: SeRemoteShutdownPrivilege	2492	powershell.exe
Token: SeUndockPrivilege	2492	powershell.exe
Token: SeManageVolumePrivilege	2492	powershell.exe
Token: 33	2492	powershell.exe
Token: 34	2492	powershell.exe
Token: 35	2492	powershell.exe
Token: 36	2492	powershell.exe
Token: SeDebugPrivilege	452	msiexec.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2756	msiexec.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 4776 wrote to memory of 2492	4776	MRP00108 & SDA00687.exe	83
PID 4776 wrote to memory of 2492	4776	MRP00108 & SDA00687.exe	83
PID 4776 wrote to memory of 2492	4776	MRP00108 & SDA00687.exe	83
PID 2492 wrote to memory of 2756	2492	powershell.exe	97
PID 2492 wrote to memory of 2756	2492	powershell.exe	97
PID 2492 wrote to memory of 2756	2492	powershell.exe	97
PID 2492 wrote to memory of 2756	2492	powershell.exe	97
PID 2756 wrote to memory of 3136	2756	msiexec.exe	102
PID 2756 wrote to memory of 3136	2756	msiexec.exe	102
PID 2756 wrote to memory of 3136	2756	msiexec.exe	102
PID 2756 wrote to memory of 3136	2756	msiexec.exe	102
PID 2756 wrote to memory of 3140	2756	msiexec.exe	103
PID 2756 wrote to memory of 3140	2756	msiexec.exe	103
PID 2756 wrote to memory of 3140	2756	msiexec.exe	103
PID 2756 wrote to memory of 1708	2756	msiexec.exe	104
PID 2756 wrote to memory of 1708	2756	msiexec.exe	104
PID 2756 wrote to memory of 1708	2756	msiexec.exe	104
PID 2756 wrote to memory of 1708	2756	msiexec.exe	104
PID 2756 wrote to memory of 1960	2756	msiexec.exe	105
PID 2756 wrote to memory of 1960	2756	msiexec.exe	105
PID 2756 wrote to memory of 1960	2756	msiexec.exe	105
PID 2756 wrote to memory of 452	2756	msiexec.exe	106
PID 2756 wrote to memory of 452	2756	msiexec.exe	106
PID 2756 wrote to memory of 452	2756	msiexec.exe	106
PID 2756 wrote to memory of 452	2756	msiexec.exe	106

C:\Users\Admin\AppData\Local\Temp\MRP00108 & SDA00687.exe
"C:\Users\Admin\AppData\Local\Temp\MRP00108 & SDA00687.exe"
1⤵
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4776
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle minimized "$Uforenelige=gc -Raw 'C:\Users\Admin\AppData\Local\Country216\Filterintegration.Eks';$indefencibly=$Uforenelige.SubString(2896,3);.$indefencibly($Uforenelige)"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2492
- - 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:2756
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\bmvpzphbxqwxrakwkuuvzrphtvf"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:3136
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\moaiaasdlyobbgyacehwkecqucotyeo"
      4⤵
      PID:3140
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\moaiaasdlyobbgyacehwkecqucotyeo"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:1708
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\wifsbsdwzggodmuelptqniwhdrgcrpnase"
      4⤵
      PID:1960
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\wifsbsdwzggodmuelptqniwhdrgcrpnase"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:452

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

Loading Replay Monitor...

Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
5f6a1e4f7815ad8cd3ac34d6a24a70d0

SHA1
0976097824a8e9d4075a6b7da35c43b89f5d4292

SHA256
23ae9a18d3f74d6d0329ae6286409470862e20e57086ed03c1c228def639edd9

SHA512
d8c79b1e0b0dd4108dd129d35c994dce5984370c83ef20d2efa3fddb6b7fa3ea46c38bd317bca1536a0a4d8e70d36a4db2ecf0c3b51d14492f592d92d11e9be3

Download Submit
C:\Users\Admin\AppData\Local\Country216\Filterintegration.Eks

Filesize
52KB

MD5
b2675a19c8907bdb1caac87a463036ab

SHA1
ce3eb4761dd92a88834851e404952edebac92ff3

SHA256
e55feb751d85c738f96c802c9df5af30ef0722a0af003bdc65826f31c2d0b9cd

SHA512
5d0707af18e5e0790c48c33ab62869cdbba3662de10850368b8a0ad1511896a29ce6f7b1d1daaa45876ce83873d8cef1df592092c07615e7a72dd5d3620a95b4

Download Submit
C:\Users\Admin\AppData\Local\Country216\Marmalades.Pas

Filesize
338KB

MD5
eee1c80e83b995bdcb5f27b31e64cdf6

SHA1
d5e6eaf73c07d24efe44f443a0fc83fe92c51055

SHA256
0515372b843282de9ff41a9c6a88a641dfd658d98674676fd83e79a871f8d681

SHA512
b0d4beed14e69b58c74617d612daf248b7b6e2535cded360156f38b42ae545700d852ccb60c9186903cd97b5b7ba3985261d95eb29cf700db91856a87dab9a75

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_y3uyqabf.b2v.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
4KB

MD5
c3c5f2de99b7486f697634681e21bab0

SHA1
00f90d495c0b2b63fde6532e033fdd2ade25633d

SHA256
76296dc29f718988107d35d0e0b835c2bf3fc7405e79e5121aa4738f82b51582

SHA512
7c60ffdc093de30e793d20768877f2f586bee3e948767871f9a1139252d5d2f593ba6f88ce0ed5f72c79faddb26186792df0581e4b6c84d405c44d9d12f951b8

Download Submit
memory/452-82-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/452-83-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/452-77-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1708-84-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1708-81-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1708-76-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2492-30-0x00000000080B0000-0x000000000872A000-memory.dmp

Filesize
6.5MB

Download
memory/2492-62-0x0000000008730000-0x000000000C592000-memory.dmp

Filesize
62.4MB

Download
memory/2492-26-0x0000000006320000-0x000000000633A000-memory.dmp

Filesize
104KB

Download
memory/2492-27-0x0000000006E00000-0x0000000006E22000-memory.dmp

Filesize
136KB

Download
memory/2492-28-0x0000000007480000-0x0000000007A24000-memory.dmp

Filesize
5.6MB

Download
memory/2492-24-0x0000000005E60000-0x0000000005EAC000-memory.dmp

Filesize
304KB

Download
memory/2492-5-0x0000000073B2E000-0x0000000073B2F000-memory.dmp

Filesize
4KB

Download
memory/2492-33-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-32-0x000000006FFA0000-0x000000006FFEC000-memory.dmp

Filesize
304KB

Download
memory/2492-43-0x0000000007260000-0x000000000727E000-memory.dmp

Filesize
120KB

Download
memory/2492-31-0x0000000007220000-0x0000000007252000-memory.dmp

Filesize
200KB

Download
memory/2492-44-0x0000000007290000-0x0000000007333000-memory.dmp

Filesize
652KB

Download
memory/2492-45-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-46-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-47-0x0000000007390000-0x000000000739A000-memory.dmp

Filesize
40KB

Download
memory/2492-48-0x00000000073B0000-0x00000000073C1000-memory.dmp

Filesize
68KB

Download
memory/2492-49-0x0000000007400000-0x000000000740E000-memory.dmp

Filesize
56KB

Download
memory/2492-50-0x0000000007410000-0x0000000007424000-memory.dmp

Filesize
80KB

Download
memory/2492-51-0x0000000007450000-0x000000000746A000-memory.dmp

Filesize
104KB

Download
memory/2492-52-0x0000000007440000-0x0000000007448000-memory.dmp

Filesize
32KB

Download
memory/2492-53-0x0000000007BC0000-0x0000000007BEA000-memory.dmp

Filesize
168KB

Download
memory/2492-54-0x0000000007BF0000-0x0000000007C14000-memory.dmp

Filesize
144KB

Download
memory/2492-55-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-57-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-56-0x0000000073B2E000-0x0000000073B2F000-memory.dmp

Filesize
4KB

Download
memory/2492-58-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-23-0x0000000005E30000-0x0000000005E4E000-memory.dmp

Filesize
120KB

Download
memory/2492-60-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-61-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-25-0x0000000006370000-0x0000000006406000-memory.dmp

Filesize
600KB

Download
memory/2492-63-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-64-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-65-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-66-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-68-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-6-0x00000000027A0000-0x00000000027D6000-memory.dmp

Filesize
216KB

Download
memory/2492-7-0x0000000004F40000-0x0000000005568000-memory.dmp

Filesize
6.2MB

Download
memory/2492-22-0x0000000005800000-0x0000000005B54000-memory.dmp

Filesize
3.3MB

Download
memory/2492-11-0x00000000056E0000-0x0000000005746000-memory.dmp

Filesize
408KB

Download
memory/2492-12-0x0000000005750000-0x00000000057B6000-memory.dmp

Filesize
408KB

Download
memory/2492-8-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2492-10-0x0000000004DB0000-0x0000000004DD2000-memory.dmp

Filesize
136KB

Download
memory/2492-9-0x0000000073B20000-0x00000000742D0000-memory.dmp

Filesize
7.7MB

Download
memory/2756-101-0x0000000000950000-0x0000000001BA4000-memory.dmp

Filesize
18.3MB

Download
memory/2756-98-0x0000000000950000-0x0000000001BA4000-memory.dmp

Filesize
18.3MB

Download
memory/2756-113-0x0000000000950000-0x0000000001BA4000-memory.dmp

Filesize
18.3MB

Download
memory/2756-110-0x0000000000950000-0x0000000001BA4000-memory.dmp

Filesize
18.3MB

Download
memory/2756-74-0x0000000000950000-0x0000000001BA4000-memory.dmp

Filesize
18.3MB

Download
memory/2756-91-0x00000000214B0000-0x00000000214C9000-memory.dmp

Filesize
100KB

Download
memory/2756-107-0x0000000000950000-0x0000000001BA4000-memory.dmp

Filesize
18.3MB

Download
memory/2756-94-0x00000000214B0000-0x00000000214C9000-memory.dmp

Filesize
100KB

Download
memory/2756-95-0x00000000214B0000-0x00000000214C9000-memory.dmp

Filesize
100KB

Download
memory/2756-104-0x0000000000950000-0x0000000001BA4000-memory.dmp

Filesize
18.3MB

Download
memory/2756-69-0x0000000000950000-0x0000000001BA4000-memory.dmp

Filesize
18.3MB

Download
memory/3136-80-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3136-78-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3136-85-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3136-75-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download