remcos | d1035521f8e1bde7c0b9a8c24ed58c7c936c5cd9216249102e01581909e4fa77

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22/08/2024, 10:59

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General

Target

TRANSFERENCIA.scr
Size

1023KB
MD5

7b3227d251b8705a239fa50ca8070e9c
SHA1

651a7aeec8cbc13f226377ad187d5fc420b22633
SHA256

81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96
SHA512

c6f77c480860002447ff0c252501afc750255f89fad805c39cd036b3f582ff6a2c5e14a5477d2af5014bec84d315e9e66d51a3d329f0bc3cf1608e4a9f85a141
SSDEEP

24576:XHH6h1OnUfbU8QQgV/1hilQgu4FEYTZJr1nzZV8zBVdoGJb84:38Zoj/Vgu4W0pzf8loi

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
768	powershell.exe
2644	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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	TRANSFERENCIA.scr

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4088 set thread context of 1692	4088	TRANSFERENCIA.scr	100

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	TRANSFERENCIA.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TRANSFERENCIA.scr
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

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
432	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
768	powershell.exe
2644	powershell.exe
2644	powershell.exe
768	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	768	powershell.exe
Token: SeDebugPrivilege	2644	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1692	TRANSFERENCIA.scr

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4088 wrote to memory of 768	4088	TRANSFERENCIA.scr	94
PID 4088 wrote to memory of 768	4088	TRANSFERENCIA.scr	94
PID 4088 wrote to memory of 768	4088	TRANSFERENCIA.scr	94
PID 4088 wrote to memory of 2644	4088	TRANSFERENCIA.scr	96
PID 4088 wrote to memory of 2644	4088	TRANSFERENCIA.scr	96
PID 4088 wrote to memory of 2644	4088	TRANSFERENCIA.scr	96
PID 4088 wrote to memory of 432	4088	TRANSFERENCIA.scr	98
PID 4088 wrote to memory of 432	4088	TRANSFERENCIA.scr	98
PID 4088 wrote to memory of 432	4088	TRANSFERENCIA.scr	98
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100
PID 4088 wrote to memory of 1692	4088	TRANSFERENCIA.scr	100

C:\Users\Admin\AppData\Local\Temp\TRANSFERENCIA.scr
"C:\Users\Admin\AppData\Local\Temp\TRANSFERENCIA.scr" /S
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4088
- 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\TRANSFERENCIA.scr"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:768
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\IpoUfzz.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2644
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IpoUfzz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC767.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:432
- C:\Users\Admin\AppData\Local\Temp\TRANSFERENCIA.scr
  "C:\Users\Admin\AppData\Local\Temp\TRANSFERENCIA.scr"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1692

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

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
43a268b21529e1676f4d89f2d5ff4fea

SHA1
747e09fba2861802fbc7f979d6fce705fa9b016d

SHA256
80326b4efc442eacc0f2112ada3ad6d480e0ad65a0043419b3cf398cec76fcce

SHA512
81cae3a6055c6c6269fd30c5ed97ee982121608a6e84f4f2ed456d151d6c06af60b93cac83251d6af231ece72dfe12218ff66fd287498ca906246b58b372f117

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
3b66aed6d32fc3a47da140a58ee21ed0

SHA1
582bd7de230b80ff60748665632dd4d4ca297272

SHA256
2aeb61a15ecb763ef0eda3444879d381de8ff8096060199e165939ad8ffcfdc1

SHA512
7c80a8ea45b076588173e52264dfc306f610ac68329df2e672584acf64c045d99dfad56af17c5d5c3a4854c68ecdcf589b0d83429c8dfa3585bc9c82ea1717f1

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_u5o3joha.jno.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC767.tmp

Filesize
1KB

MD5
99fe203f6e8197f46ac31bd5e0ff0578

SHA1
58be617a148096488d52cb7895dc3661b8c6a582

SHA256
fbaa7295b69b51f279e424e640264c9f6a21429ad3ab2b9463988e0630905d36

SHA512
980af15c9946eba747ed906a96b2bcd3595c3760668871fe21adbee2489ee4433c5f36870dc927b94bf00e9f9b6d1ac780039e2bf21c27a4b0e5061e78e51c59

Download Submit
memory/768-31-0x0000000005A10000-0x0000000005A76000-memory.dmp

Filesize
408KB

Download
memory/768-17-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/768-16-0x0000000004B20000-0x0000000004B56000-memory.dmp

Filesize
216KB

Download
memory/768-75-0x0000000075B50000-0x0000000075B9C000-memory.dmp

Filesize
304KB

Download
memory/768-85-0x0000000006730000-0x00000000067D3000-memory.dmp

Filesize
652KB

Download
memory/768-91-0x0000000007640000-0x000000000764E000-memory.dmp

Filesize
56KB

Download
memory/768-18-0x00000000052F0000-0x0000000005918000-memory.dmp

Filesize
6.2MB

Download
memory/768-100-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/768-22-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/768-27-0x00000000052A0000-0x00000000052C2000-memory.dmp

Filesize
136KB

Download
memory/768-32-0x0000000005A80000-0x0000000005AE6000-memory.dmp

Filesize
408KB

Download
memory/768-19-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/1692-130-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-115-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-106-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-131-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-123-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-114-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1692-122-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2644-56-0x0000000006500000-0x000000000651E000-memory.dmp

Filesize
120KB

Download
memory/2644-21-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/2644-20-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/2644-57-0x00000000066D0000-0x000000000671C000-memory.dmp

Filesize
304KB

Download
memory/2644-63-0x0000000006AD0000-0x0000000006B02000-memory.dmp

Filesize
200KB

Download
memory/2644-64-0x0000000075B50000-0x0000000075B9C000-memory.dmp

Filesize
304KB

Download
memory/2644-24-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/2644-74-0x00000000074C0000-0x00000000074DE000-memory.dmp

Filesize
120KB

Download
memory/2644-101-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/2644-86-0x0000000007E70000-0x00000000084EA000-memory.dmp

Filesize
6.5MB

Download
memory/2644-87-0x0000000007830000-0x000000000784A000-memory.dmp

Filesize
104KB

Download
memory/2644-88-0x00000000078A0000-0x00000000078AA000-memory.dmp

Filesize
40KB

Download
memory/2644-89-0x0000000007AB0000-0x0000000007B46000-memory.dmp

Filesize
600KB

Download
memory/2644-90-0x0000000007A30000-0x0000000007A41000-memory.dmp

Filesize
68KB

Download
memory/2644-46-0x0000000006140000-0x0000000006494000-memory.dmp

Filesize
3.3MB

Download
memory/2644-92-0x0000000007A70000-0x0000000007A84000-memory.dmp

Filesize
80KB

Download
memory/2644-93-0x0000000007B70000-0x0000000007B8A000-memory.dmp

Filesize
104KB

Download
memory/2644-94-0x0000000007B50000-0x0000000007B58000-memory.dmp

Filesize
32KB

Download
memory/4088-7-0x00000000752CE000-0x00000000752CF000-memory.dmp

Filesize
4KB

Download
memory/4088-8-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/4088-9-0x0000000006770000-0x0000000006780000-memory.dmp

Filesize
64KB

Download
memory/4088-10-0x00000000067C0000-0x0000000006880000-memory.dmp

Filesize
768KB

Download
memory/4088-11-0x0000000008FF0000-0x000000000908C000-memory.dmp

Filesize
624KB

Download
memory/4088-6-0x00000000058F0000-0x0000000005902000-memory.dmp

Filesize
72KB

Download
memory/4088-5-0x0000000005560000-0x000000000556A000-memory.dmp

Filesize
40KB

Download
memory/4088-4-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/4088-3-0x00000000055B0000-0x0000000005642000-memory.dmp

Filesize
584KB

Download
memory/4088-2-0x0000000005AC0000-0x0000000006064000-memory.dmp

Filesize
5.6MB

Download
memory/4088-1-0x0000000000A50000-0x0000000000B56000-memory.dmp

Filesize
1.0MB

Download
memory/4088-0-0x00000000752CE000-0x00000000752CF000-memory.dmp

Filesize
4KB

Download
memory/4088-55-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download