remcos | 8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5

Analysis

max time kernel
150s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24/09/2024, 09:07

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General

Target

8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
Size

883KB
MD5

571902de75705d1aeaa32be01459dc65
SHA1

4ccf3c9a339146008c1d8466857e13d3c7752a05
SHA256

8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5
SHA512

966381cdeaf8213fefdca876052a59dcda9e2436cfc50b4516eca936ebb9e75b9421058969526fa0b46d06067a43398a51c8e7201fa72d39faa0153c4328a9d7
SSDEEP

24576:kBGzjcJ6NacNEyNOU+6cNuuH2SNcjmYY4Swv:kE86N1l5x8uuWSpYXS2

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:59321

nnamoo.duckdns.org:59321

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-41EVS0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
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
4396	powershell.exe
808	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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2664 set thread context of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94

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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
3368	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
4396	powershell.exe
808	powershell.exe
2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
808	powershell.exe
4396	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
Token: SeDebugPrivilege	808	powershell.exe
Token: SeDebugPrivilege	4396	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 4396	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	88
PID 2664 wrote to memory of 4396	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	88
PID 2664 wrote to memory of 4396	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	88
PID 2664 wrote to memory of 808	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	90
PID 2664 wrote to memory of 808	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	90
PID 2664 wrote to memory of 808	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	90
PID 2664 wrote to memory of 3368	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	92
PID 2664 wrote to memory of 3368	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	92
PID 2664 wrote to memory of 3368	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	92
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94
PID 2664 wrote to memory of 924	2664	8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe	94

C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
"C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.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:2664
- 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\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4396
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\efsOOkOP.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:808
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\efsOOkOP" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD438.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3368
- C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
  "C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:924

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:\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
e438304439e89bb754a30315f49a7e20

SHA1
6bc54a770d167b7878736458ccd0c9b8fd20f4c6

SHA256
d26186624b78ca3f5f24a8e1cd828438a5e8c1a7c22c98027dcecd1c04497c58

SHA512
79f985dec5c08354c4af32bd27d8011041edecb22b648a1d208795b5a09240c653510aba933ecec32ae508e2fd8c3b5b2c442e244624479b6d11feab6483819b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fphlf0vj.1jh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD438.tmp

Filesize
1KB

MD5
505b133ed29fb8ee75068f663b960c0c

SHA1
df58a2195768ef5c54d0dc0737f7b0a0263d3746

SHA256
d46df903f013edc94661dddc3c37085cc0d4810f086c370f6229147ad3e5c9e7

SHA512
53b015944d67673781de0e532b5116a47375c2d72fbbc272588c71a503a31f4e22ba13cad74d3ea0738baad4acd34b466493e1170dfc6fbe906e65aecdc0cd5b

Download Submit
memory/808-53-0x0000000006720000-0x000000000676C000-memory.dmp

Filesize
304KB

Download
memory/808-55-0x00000000755C0000-0x000000007560C000-memory.dmp

Filesize
304KB

Download
memory/808-92-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/808-85-0x0000000007CB0000-0x0000000007CCA000-memory.dmp

Filesize
104KB

Download
memory/808-84-0x0000000007BB0000-0x0000000007BC4000-memory.dmp

Filesize
80KB

Download
memory/808-82-0x0000000007B70000-0x0000000007B81000-memory.dmp

Filesize
68KB

Download
memory/808-54-0x0000000007620000-0x0000000007652000-memory.dmp

Filesize
200KB

Download
memory/808-79-0x00000000079E0000-0x00000000079EA000-memory.dmp

Filesize
40KB

Download
memory/808-65-0x0000000006C10000-0x0000000006C2E000-memory.dmp

Filesize
120KB

Download
memory/808-16-0x0000000005720000-0x0000000005D48000-memory.dmp

Filesize
6.2MB

Download
memory/808-18-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/808-76-0x0000000007860000-0x0000000007903000-memory.dmp

Filesize
652KB

Download
memory/808-81-0x0000000007BF0000-0x0000000007C86000-memory.dmp

Filesize
600KB

Download
memory/808-22-0x0000000005EC0000-0x0000000005F26000-memory.dmp

Filesize
408KB

Download
memory/808-29-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/808-52-0x0000000006640000-0x000000000665E000-memory.dmp

Filesize
120KB

Download
memory/808-23-0x0000000005F30000-0x0000000005F96000-memory.dmp

Filesize
408KB

Download
memory/808-21-0x0000000005690000-0x00000000056B2000-memory.dmp

Filesize
136KB

Download
memory/808-35-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/808-34-0x0000000006260000-0x00000000065B4000-memory.dmp

Filesize
3.3MB

Download
memory/924-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-105-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-104-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-101-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-97-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/924-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2664-4-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/2664-1-0x0000000000BF0000-0x0000000000CD4000-memory.dmp

Filesize
912KB

Download
memory/2664-51-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/2664-9-0x00000000071A0000-0x000000000725E000-memory.dmp

Filesize
760KB

Download
memory/2664-5-0x0000000005750000-0x000000000575A000-memory.dmp

Filesize
40KB

Download
memory/2664-8-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/2664-7-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

Filesize
4KB

Download
memory/2664-3-0x0000000005690000-0x0000000005722000-memory.dmp

Filesize
584KB

Download
memory/2664-2-0x0000000005D40000-0x00000000062E4000-memory.dmp

Filesize
5.6MB

Download
memory/2664-6-0x0000000006D20000-0x0000000006D32000-memory.dmp

Filesize
72KB

Download
memory/2664-0-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

Filesize
4KB

Download
memory/2664-10-0x0000000009870000-0x000000000990C000-memory.dmp

Filesize
624KB

Download
memory/4396-77-0x0000000007A10000-0x000000000808A000-memory.dmp

Filesize
6.5MB

Download
memory/4396-78-0x00000000073D0000-0x00000000073EA000-memory.dmp

Filesize
104KB

Download
memory/4396-17-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/4396-19-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/4396-66-0x00000000755C0000-0x000000007560C000-memory.dmp

Filesize
304KB

Download
memory/4396-15-0x0000000004B00000-0x0000000004B36000-memory.dmp

Filesize
216KB

Download
memory/4396-83-0x0000000007600000-0x000000000760E000-memory.dmp

Filesize
56KB

Download
memory/4396-93-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download
memory/4396-86-0x00000000076F0000-0x00000000076F8000-memory.dmp

Filesize
32KB

Download
memory/4396-36-0x0000000074D10000-0x00000000754C0000-memory.dmp

Filesize
7.7MB

Download