remcos | 3d896c411b2b4c2f0f419adda474b192d6e7e0f496c7cf4bfb678d9bcdae11b5

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29-08-2024 11:10

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General

Target

BP-30M31_20240829_093844.exe
Size

987KB
MD5

3fd2edc9d87c0a0eb814814f8f461483
SHA1

4b9ec9455439827479f661ddba252228e60db2ce
SHA256

3d896c411b2b4c2f0f419adda474b192d6e7e0f496c7cf4bfb678d9bcdae11b5
SHA512

21aee3b2bf388738937f7a262bc5def06c0d0eb09529d237565b369f93c643c5a44292031d844dc5a6e6a7f85866683d27e92ea966d3c24f89eabc6e84ae5070
SSDEEP

24576:OZMMCpg5QbkH/njR1WWdHSZCGF9bbMZi:70QmjR1W+HGHb9

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

192.3.243.155:7643

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-C9YEJ8
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

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
1560	powershell.exe
4052	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	BP-30M31_20240829_093844.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3592 set thread context of 4540	3592	BP-30M31_20240829_093844.exe	103

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 5 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	BP-30M31_20240829_093844.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BP-30M31_20240829_093844.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
1496	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4052	powershell.exe
1560	powershell.exe
4052	powershell.exe
1560	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4052	powershell.exe
Token: SeDebugPrivilege	1560	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4540	BP-30M31_20240829_093844.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3592 wrote to memory of 4052	3592	BP-30M31_20240829_093844.exe	97
PID 3592 wrote to memory of 4052	3592	BP-30M31_20240829_093844.exe	97
PID 3592 wrote to memory of 4052	3592	BP-30M31_20240829_093844.exe	97
PID 3592 wrote to memory of 1560	3592	BP-30M31_20240829_093844.exe	99
PID 3592 wrote to memory of 1560	3592	BP-30M31_20240829_093844.exe	99
PID 3592 wrote to memory of 1560	3592	BP-30M31_20240829_093844.exe	99
PID 3592 wrote to memory of 1496	3592	BP-30M31_20240829_093844.exe	101
PID 3592 wrote to memory of 1496	3592	BP-30M31_20240829_093844.exe	101
PID 3592 wrote to memory of 1496	3592	BP-30M31_20240829_093844.exe	101
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103
PID 3592 wrote to memory of 4540	3592	BP-30M31_20240829_093844.exe	103

C:\Users\Admin\AppData\Local\Temp\BP-30M31_20240829_093844.exe
"C:\Users\Admin\AppData\Local\Temp\BP-30M31_20240829_093844.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3592
- 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\BP-30M31_20240829_093844.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4052
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gqxyRiPaQx.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1560
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gqxyRiPaQx" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEC35.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1496
- C:\Users\Admin\AppData\Local\Temp\BP-30M31_20240829_093844.exe
  "C:\Users\Admin\AppData\Local\Temp\BP-30M31_20240829_093844.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4540

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

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
539f5c35b3e0faa3489558d96b5a784c

SHA1
00c7ce9f9c8d6b723e7b19d7890ad66f4ffdf48e

SHA256
db40cac9dbe3c0f32c4634358d5de882bebadeb0eef49f533cacd2ca6f9e1c97

SHA512
023e6fbe761ce18482cac9af94fb703f924cef4002541bc9ee30e31f7c6e3a0653b68528cb798e4067de39ececd96dd41c91693deadc754dbe871de1b87e2b39

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

Filesize
18KB

MD5
3160b30498aea44af4d5b12afbba7f42

SHA1
66d53d66e28da3c718b3b976e8fb826b7618bd59

SHA256
86ac1ffa8408625f163f1a90a78d45e2b7954dfe9ad6b3a55c139ce9d08c9715

SHA512
6645cff0b1045fe20992ce6d2c432c5351e3b9a9b7dce13e400c43fea5e2a0a32f3940b2a7dfa4a5ef6e59726f3585f381790abadbdffc15d19c580cb335f018

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_20jdq5xb.la1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEC35.tmp

Filesize
1KB

MD5
e6399ede23fd70136be3062a7af8b113

SHA1
2ac21df5bec7f0a2a69778bcd1fd9cf67f0d3910

SHA256
b34ae1afb5937f834fb806368ea3d6b5c3743c23b8812d4569436ea29ca6a891

SHA512
49bf1021fcd6f90ec70e548db9b6c8dc1f7a7e517fca018da38648cc604b2b9babe692024758bebd0b05a699c25c8a23df0412c146bd43021fe446822d8273ef

Download Submit
memory/1560-71-0x0000000075770000-0x00000000757BC000-memory.dmp

Filesize
304KB

Download
memory/1560-81-0x0000000007070000-0x0000000007113000-memory.dmp

Filesize
652KB

Download
memory/1560-86-0x00000000075A0000-0x00000000075B1000-memory.dmp

Filesize
68KB

Download
memory/1560-88-0x00000000075E0000-0x00000000075F4000-memory.dmp

Filesize
80KB

Download
memory/1560-89-0x00000000076E0000-0x00000000076FA000-memory.dmp

Filesize
104KB

Download
memory/3592-10-0x0000000006C00000-0x0000000006C9C000-memory.dmp

Filesize
624KB

Download
memory/3592-42-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/3592-9-0x0000000006940000-0x0000000006A00000-memory.dmp

Filesize
768KB

Download
memory/3592-8-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/3592-7-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

Filesize
4KB

Download
memory/3592-0-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

Filesize
4KB

Download
memory/3592-6-0x0000000005D10000-0x0000000005D28000-memory.dmp

Filesize
96KB

Download
memory/3592-5-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/3592-4-0x00000000057B0000-0x00000000057BA000-memory.dmp

Filesize
40KB

Download
memory/3592-3-0x0000000005700000-0x0000000005792000-memory.dmp

Filesize
584KB

Download
memory/3592-2-0x0000000005D60000-0x0000000006304000-memory.dmp

Filesize
5.6MB

Download
memory/3592-1-0x0000000000D40000-0x0000000000E3E000-memory.dmp

Filesize
1016KB

Download
memory/4052-20-0x0000000005070000-0x00000000050D6000-memory.dmp

Filesize
408KB

Download
memory/4052-84-0x00000000073B0000-0x00000000073BA000-memory.dmp

Filesize
40KB

Download
memory/4052-15-0x00000000026F0000-0x0000000002726000-memory.dmp

Filesize
216KB

Download
memory/4052-27-0x00000000059E0000-0x0000000005D34000-memory.dmp

Filesize
3.3MB

Download
memory/4052-96-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/4052-18-0x0000000004F60000-0x0000000004F82000-memory.dmp

Filesize
136KB

Download
memory/4052-16-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/4052-17-0x0000000005130000-0x0000000005758000-memory.dmp

Filesize
6.2MB

Download
memory/4052-55-0x0000000006000000-0x000000000601E000-memory.dmp

Filesize
120KB

Download
memory/4052-90-0x0000000007660000-0x0000000007668000-memory.dmp

Filesize
32KB

Download
memory/4052-56-0x0000000006540000-0x000000000658C000-memory.dmp

Filesize
304KB

Download
memory/4052-21-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/4052-60-0x0000000075770000-0x00000000757BC000-memory.dmp

Filesize
304KB

Download
memory/4052-19-0x0000000005000000-0x0000000005066000-memory.dmp

Filesize
408KB

Download
memory/4052-70-0x00000000065E0000-0x00000000065FE000-memory.dmp

Filesize
120KB

Download
memory/4052-59-0x0000000006FD0000-0x0000000007002000-memory.dmp

Filesize
200KB

Download
memory/4052-87-0x0000000007570000-0x000000000757E000-memory.dmp

Filesize
56KB

Download
memory/4052-82-0x0000000007990000-0x000000000800A000-memory.dmp

Filesize
6.5MB

Download
memory/4052-83-0x0000000007340000-0x000000000735A000-memory.dmp

Filesize
104KB

Download
memory/4052-28-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/4052-85-0x00000000075C0000-0x0000000007656000-memory.dmp

Filesize
600KB

Download
memory/4540-98-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-129-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-106-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-113-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-114-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-122-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-121-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-130-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4540-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download