remcos | 58b6cc9bef7c86291ce7c27353e925b340504b0c112c312a7c7c7ff885bc1c1a

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
13-09-2024 09:23

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General

Target

7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe
Size

924KB
MD5

8fd5f061761645838e92744a0722f87d
SHA1

565a31f86b886a26cc8c10ce3780a256e4157f55
SHA256

7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9
SHA512

8d67b4408e987f2cf6fcd938058b2179bb36a703990c52b7a1cfc6058a4b568d7785a321782a0c2107091a1622e3f57e04a6109f851471e7f7064bda7b007122
SSDEEP

24576:K9o/NseOLSe+/1k38m8IyfhFTG7KQTCaAhkqG72:K2JarEZytpMGq

Score

10^/10

remcos mekus discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

mekus

dpm-sael.com:2017

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
meckus-ODY51K
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
2888	powershell.exe
852	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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3304 set thread context of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99

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	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.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
3268	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2888	powershell.exe
852	powershell.exe
2888	powershell.exe
852	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2888	powershell.exe
Token: SeDebugPrivilege	852	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3384	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3304 wrote to memory of 2888	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	93
PID 3304 wrote to memory of 2888	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	93
PID 3304 wrote to memory of 2888	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	93
PID 3304 wrote to memory of 852	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	95
PID 3304 wrote to memory of 852	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	95
PID 3304 wrote to memory of 852	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	95
PID 3304 wrote to memory of 3268	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	97
PID 3304 wrote to memory of 3268	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	97
PID 3304 wrote to memory of 3268	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	97
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99
PID 3304 wrote to memory of 3384	3304	7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe	99

C:\Users\Admin\AppData\Local\Temp\7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe
"C:\Users\Admin\AppData\Local\Temp\7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3304
- 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\7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2888
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pNamqURus.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:852
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pNamqURus" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB95D.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3268
- C:\Users\Admin\AppData\Local\Temp\7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe
  "C:\Users\Admin\AppData\Local\Temp\7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3384

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
85ffb60d8bcadc1572d2cf3e35d03282

SHA1
09b27c4ad013504b2a2cd6b48ff36adb32ff51af

SHA256
08071db7b3da7984385c8c77d8c440f7ebc2e2c98917b285d0ac84b8727cf2fb

SHA512
01727b36295b84822d056672d87fc7658d1d8bfe61f5fe18be524c6fbe354bde117af95995ff35a3814e2ea620a46f8f31d608eff1caaa06566ff93f138bf134

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

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
94468e9f82330cb6b3dcb14671e3a5eb

SHA1
4daa9b52cef60a161e83c523ef4ad5b350700156

SHA256
7e66cdd83517d9aba1b59e4b999e32a9794e45b3818c2b6db5b71301e6f27cc4

SHA512
a122f6d80fc98ebaea82df965f928bb275aaa413543139bd42e2018a5a8fb8d9258ef0eeee1bed2453568b5c6870709cb3c0709efef7de40e0f1a9ee640d98a6

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uz5yto5w.0ut.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB95D.tmp

Filesize
1KB

MD5
798597f33c53ad602314125cf675987d

SHA1
c0819bbb92b049384ae764330c47a4172a75ce2c

SHA256
086ddc269c5e6a69a9f3d474dbc3f1cbd0d41aa80e8d9a296eebff44e93a6e1c

SHA512
8a8f552f7f44e4c59b4f91b406d45e2f27de0ee9574a129537b55926000bc9e104443cf1c1c13e356cd52a884ae51c297f695000cdc47ce05d9d871de343436d

Download Submit
memory/852-28-0x00000000054D0000-0x0000000005536000-memory.dmp

Filesize
408KB

Download
memory/852-31-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/852-101-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/852-95-0x00000000071F0000-0x00000000071F8000-memory.dmp

Filesize
32KB

Download
memory/852-94-0x0000000007210000-0x000000000722A000-memory.dmp

Filesize
104KB

Download
memory/852-93-0x0000000007110000-0x0000000007124000-memory.dmp

Filesize
80KB

Download
memory/852-92-0x0000000007100000-0x000000000710E000-memory.dmp

Filesize
56KB

Download
memory/852-89-0x00000000070D0000-0x00000000070E1000-memory.dmp

Filesize
68KB

Download
memory/852-88-0x0000000007150000-0x00000000071E6000-memory.dmp

Filesize
600KB

Download
memory/852-77-0x0000000074FF0000-0x000000007503C000-memory.dmp

Filesize
304KB

Download
memory/852-29-0x0000000005540000-0x00000000055A6000-memory.dmp

Filesize
408KB

Download
memory/852-20-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/852-32-0x00000000055B0000-0x0000000005904000-memory.dmp

Filesize
3.3MB

Download
memory/852-22-0x0000000004DE0000-0x0000000004E02000-memory.dmp

Filesize
136KB

Download
memory/852-30-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/2888-16-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/2888-62-0x0000000006C00000-0x0000000006C32000-memory.dmp

Filesize
200KB

Download
memory/2888-102-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/2888-17-0x0000000005960000-0x0000000005F88000-memory.dmp

Filesize
6.2MB

Download
memory/2888-15-0x0000000002D10000-0x0000000002D46000-memory.dmp

Filesize
216KB

Download
memory/2888-87-0x00000000079C0000-0x00000000079CA000-memory.dmp

Filesize
40KB

Download
memory/2888-76-0x0000000007940000-0x000000000795A000-memory.dmp

Filesize
104KB

Download
memory/2888-54-0x0000000006610000-0x000000000662E000-memory.dmp

Filesize
120KB

Download
memory/2888-55-0x0000000006730000-0x000000000677C000-memory.dmp

Filesize
304KB

Download
memory/2888-19-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/2888-18-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/2888-75-0x0000000007F90000-0x000000000860A000-memory.dmp

Filesize
6.5MB

Download
memory/2888-74-0x00000000077F0000-0x0000000007893000-memory.dmp

Filesize
652KB

Download
memory/2888-73-0x0000000006BB0000-0x0000000006BCE000-memory.dmp

Filesize
120KB

Download
memory/2888-63-0x0000000074FF0000-0x000000007503C000-memory.dmp

Filesize
304KB

Download
memory/3304-4-0x0000000004FE0000-0x0000000004FEA000-memory.dmp

Filesize
40KB

Download
memory/3304-10-0x0000000008DA0000-0x0000000008E3C000-memory.dmp

Filesize
624KB

Download
memory/3304-6-0x0000000006610000-0x0000000006620000-memory.dmp

Filesize
64KB

Download
memory/3304-1-0x0000000000500000-0x00000000005EC000-memory.dmp

Filesize
944KB

Download
memory/3304-2-0x00000000055F0000-0x0000000005B94000-memory.dmp

Filesize
5.6MB

Download
memory/3304-3-0x0000000005040000-0x00000000050D2000-memory.dmp

Filesize
584KB

Download
memory/3304-0-0x000000007476E000-0x000000007476F000-memory.dmp

Filesize
4KB

Download
memory/3304-7-0x000000007476E000-0x000000007476F000-memory.dmp

Filesize
4KB

Download
memory/3304-5-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/3304-8-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/3304-53-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/3304-9-0x00000000067A0000-0x0000000006860000-memory.dmp

Filesize
768KB

Download
memory/3384-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-134-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-90-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-126-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-91-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-109-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-110-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-117-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-118-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-125-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-133-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3384-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download