remcos | c3bd1eaa3e042bd0948cfdec06cae89031e5437f14ecc65e4a449a44e7c296ed

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
31-08-2024 01:20

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General

Target

f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe
Size

970KB
MD5

4b487f91d2504883b4c9df18848af5ef
SHA1

964e913b8b4cba2232e46b3fe0b73b1c009bed7d
SHA256

f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607
SHA512

2f38dfa36bff6235dcddb359af65e3374f556e40fd950c6e5e9b52a474d46227d833fd9897efc925b781f6b97b093b29dc9d119edc88d76a23d3407a1471e23b
SSDEEP

24576:BYx8QzPlMGKwlyvxR27CYOlOLkgggD8lyftUCp2mv:6x8QzZYvxR2WbRggp0XT

Score

10^/10

remcos h�texte discovery execution persistence rat

Malware Config

Extracted

Family

remcos

Botnet

H�texte

rodri.selfip.net:50019

racindjah.blogdns.com:50066

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
true
hide_keylog_file
false
install_flag
true
keylog_crypt
true
keylog_file
journaux.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-B6J50C
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Captures décran
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
1176	powershell.exe
2892	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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe

Executes dropped EXE 1 IoCs

pid	Process
1988	remcos.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-B6J50C = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	MSBuild.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-B6J50C = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1796 set thread context of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101

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	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	MSBuild.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
3532	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe
2892	powershell.exe
1176	powershell.exe
1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe
1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe
1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe
1176	powershell.exe
1176	powershell.exe
2892	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe
Token: SeDebugPrivilege	1176	powershell.exe
Token: SeDebugPrivilege	2892	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1796 wrote to memory of 1176	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	94
PID 1796 wrote to memory of 1176	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	94
PID 1796 wrote to memory of 1176	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	94
PID 1796 wrote to memory of 2892	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	96
PID 1796 wrote to memory of 2892	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	96
PID 1796 wrote to memory of 2892	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	96
PID 1796 wrote to memory of 3532	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	98
PID 1796 wrote to memory of 3532	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	98
PID 1796 wrote to memory of 3532	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	98
PID 1796 wrote to memory of 3560	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	100
PID 1796 wrote to memory of 3560	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	100
PID 1796 wrote to memory of 3560	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	100
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 1796 wrote to memory of 2064	1796	f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe	101
PID 2064 wrote to memory of 1988	2064	MSBuild.exe	102
PID 2064 wrote to memory of 1988	2064	MSBuild.exe	102
PID 2064 wrote to memory of 1988	2064	MSBuild.exe	102

C:\Users\Admin\AppData\Local\Temp\f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe
"C:\Users\Admin\AppData\Local\Temp\f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1796
- 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\f34fd6a0b6536f074e3a1bc41f0e35a80667688de9668cd1d75f6920a06e7607.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1176
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\oJSnAkAh.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2892
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oJSnAkAh" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC9A9.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3532
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:3560
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2064
- - C:\ProgramData\Remcos\remcos.exe
    "C:\ProgramData\Remcos\remcos.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1988

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

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

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

Replay Monitor

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Downloads

C:\ProgramData\Remcos\remcos.exe

Filesize
256KB

MD5
8fdf47e0ff70c40ed3a17014aeea4232

SHA1
e6256a0159688f0560b015da4d967f41cbf8c9bd

SHA256
ed9884bac608c06b7057037cc91d90e4ae5f74dd2dbce2af476699c6d4492d82

SHA512
bd69d092ed4f9c5e1f24eaf5ec79fb316469d53849dc798fae0fcba5e90869b77ee924c23cc6f692198ff25827ab60ad47bb46cadd6e0aadde7731cbafb013be

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
33b83bae3fdd35f979423647ad00d378

SHA1
be45c24d32d885aa27595273ec4a779b0b11f54a

SHA256
64a7aba8ca97a752eb479ffbc9910690dbe21ff6162bca0940c306cbd9b6d1e2

SHA512
d24f735173f21c5102f14ea7151ea4955fa76d57da1e5313b6d5b425f50691c967f5eb02825c8eb740020afa3d4e15e436fdce347ff54761c9997e0eb339c54b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tjqymo4h.lez.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC9A9.tmp

Filesize
1KB

MD5
a52cd91e1d519f6d28510aa975b23ae7

SHA1
583d2ad5a1dc2de8c24d84d9ac829ddf2b211c8d

SHA256
7ba21863ce0161694a1fe9d1eb18dee044f20ff1fe39338e86421fff0d37781f

SHA512
31052dcfde2d946870508d42e3cf31c39101f93fcc98e17db1006c975d937cc793ad74bb3dde357d7a209dcee64580be3475413482d181ce5c4d38136d7c0411

Download Submit
memory/1176-114-0x0000000006B00000-0x0000000006B32000-memory.dmp

Filesize
200KB

Download
memory/1176-151-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/1176-99-0x00000000065D0000-0x000000000661C000-memory.dmp

Filesize
304KB

Download
memory/1176-98-0x0000000006540000-0x000000000655E000-memory.dmp

Filesize
120KB

Download
memory/1176-145-0x0000000007B80000-0x0000000007B88000-memory.dmp

Filesize
32KB

Download
memory/1176-144-0x0000000007BA0000-0x0000000007BBA000-memory.dmp

Filesize
104KB

Download
memory/1176-15-0x0000000002C00000-0x0000000002C36000-memory.dmp

Filesize
216KB

Download
memory/1176-17-0x0000000005A00000-0x0000000006028000-memory.dmp

Filesize
6.2MB

Download
memory/1176-16-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/1176-18-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/1176-143-0x0000000007AA0000-0x0000000007AB4000-memory.dmp

Filesize
80KB

Download
memory/1176-142-0x0000000007A90000-0x0000000007A9E000-memory.dmp

Filesize
56KB

Download
memory/1176-22-0x0000000005530000-0x0000000005596000-memory.dmp

Filesize
408KB

Download
memory/1176-21-0x0000000005480000-0x00000000054A2000-memory.dmp

Filesize
136KB

Download
memory/1176-23-0x00000000055A0000-0x0000000005606000-memory.dmp

Filesize
408KB

Download
memory/1176-138-0x0000000007860000-0x000000000787A000-memory.dmp

Filesize
104KB

Download
memory/1176-115-0x000000006FBF0000-0x000000006FC3C000-memory.dmp

Filesize
304KB

Download
memory/1176-125-0x0000000006AE0000-0x0000000006AFE000-memory.dmp

Filesize
120KB

Download
memory/1176-126-0x0000000007720000-0x00000000077C3000-memory.dmp

Filesize
652KB

Download
memory/1176-25-0x0000000006030000-0x0000000006384000-memory.dmp

Filesize
3.3MB

Download
memory/1796-5-0x00000000057A0000-0x00000000057AA000-memory.dmp

Filesize
40KB

Download
memory/1796-10-0x0000000006AB0000-0x0000000006B4C000-memory.dmp

Filesize
624KB

Download
memory/1796-3-0x0000000005610000-0x00000000056A2000-memory.dmp

Filesize
584KB

Download
memory/1796-6-0x0000000008330000-0x0000000008348000-memory.dmp

Filesize
96KB

Download
memory/1796-8-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/1796-0-0x00000000751FE000-0x00000000751FF000-memory.dmp

Filesize
4KB

Download
memory/1796-7-0x00000000751FE000-0x00000000751FF000-memory.dmp

Filesize
4KB

Download
memory/1796-1-0x0000000000B10000-0x0000000000C08000-memory.dmp

Filesize
992KB

Download
memory/1796-2-0x0000000005B20000-0x00000000060C4000-memory.dmp

Filesize
5.6MB

Download
memory/1796-9-0x0000000006800000-0x00000000068C0000-memory.dmp

Filesize
768KB

Download
memory/1796-49-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/1796-4-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/1988-112-0x0000000005230000-0x000000000538A000-memory.dmp

Filesize
1.4MB

Download
memory/1988-111-0x0000000005020000-0x000000000503A000-memory.dmp

Filesize
104KB

Download
memory/1988-110-0x00000000009A0000-0x00000000009E0000-memory.dmp

Filesize
256KB

Download
memory/2064-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2064-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2892-19-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/2892-24-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/2892-141-0x0000000007270000-0x0000000007281000-memory.dmp

Filesize
68KB

Download
memory/2892-127-0x000000006FBF0000-0x000000006FC3C000-memory.dmp

Filesize
304KB

Download
memory/2892-137-0x00000000076B0000-0x0000000007D2A000-memory.dmp

Filesize
6.5MB

Download
memory/2892-139-0x00000000070E0000-0x00000000070EA000-memory.dmp

Filesize
40KB

Download
memory/2892-140-0x00000000072F0000-0x0000000007386000-memory.dmp

Filesize
600KB

Download
memory/2892-152-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download