remcos | 0432cb3a657e9bbc9d6ab246cba8191af7a85bae164488f1e680947c8c377e3a

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29-09-2024 18:20

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General

Target

INVB0987678000090000.exe
Size

904KB
MD5

4b08b3e2d346591d2f805256c63a8875
SHA1

8fb4067bf05ffeb0c16b9ac9ea38507889ca07b0
SHA256

f05ac4628bc3cc7da752894e47479c2f8532ed5c485943b7abb680a79d4dba9c
SHA512

ece878beb8a207d08a8978f1978548e7f32c1ec6ca36647aa5549b99fcc587bc2e79f999e5dd6f3d32f1f8370ccff98f588e03baa1a8bcba3201ae997f71ace3
SSDEEP

24576:7pItSAdsBeO/ECXs95roy+qdi3E4RPrgjizt:9tpekEGs9DdEkjiz

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

107.175.229.139:8087

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-IZFV1M
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
4464	powershell.exe
2000	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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	INVB0987678000090000.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3052 set thread context of 688	3052	INVB0987678000090000.exe	93

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	INVB0987678000090000.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	INVB0987678000090000.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
4460	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4464	powershell.exe
2000	powershell.exe
2000	powershell.exe
4464	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4464	powershell.exe
Token: SeDebugPrivilege	2000	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
688	INVB0987678000090000.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2000	3052	INVB0987678000090000.exe	86
PID 3052 wrote to memory of 2000	3052	INVB0987678000090000.exe	86
PID 3052 wrote to memory of 2000	3052	INVB0987678000090000.exe	86
PID 3052 wrote to memory of 4464	3052	INVB0987678000090000.exe	88
PID 3052 wrote to memory of 4464	3052	INVB0987678000090000.exe	88
PID 3052 wrote to memory of 4464	3052	INVB0987678000090000.exe	88
PID 3052 wrote to memory of 4460	3052	INVB0987678000090000.exe	90
PID 3052 wrote to memory of 4460	3052	INVB0987678000090000.exe	90
PID 3052 wrote to memory of 4460	3052	INVB0987678000090000.exe	90
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93
PID 3052 wrote to memory of 688	3052	INVB0987678000090000.exe	93

C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe
"C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3052
- 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\INVB0987678000090000.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2000
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\okDinu.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4464
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\okDinu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE203.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4460
- C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe
  "C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:688

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
cf212a6677db6e2beaa69a89ce03dbed

SHA1
a2fc34c154d2f6063c5668f9747044c24bf597f0

SHA256
7b131758afa6a73257bcd24a7a10ee00d990e004892e4bb60155203a4607e494

SHA512
5c5ce820ebdc6e28d79046aa8c2f248d08ad582b512719170e80156d198601b3c05cb21850a1bc7b3546be52b72eefde27714d68a6b05ad1573f4d5fe2aaa7d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zgiqnevj.3ty.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE203.tmp

Filesize
1KB

MD5
12b44c614fcd32fda287c7a8252abbd4

SHA1
45b16287c6076e8069236c3271f18e52eb48d6e8

SHA256
f6969d39eb3b555b646476db6d12eeea6441dc12e403df953d2e91b0cca27366

SHA512
06f660ad010fc51e3e0355028900f3ea33571816f4c793e2fa17817babd6c669b81df7934b404e1cddb0a92944c829f5350dcdd518431d59cae91a92da9f7b62

Download Submit
memory/688-106-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-126-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-118-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-113-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-112-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-124-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-105-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-119-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-131-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2000-18-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/2000-93-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/2000-85-0x0000000007580000-0x0000000007616000-memory.dmp

Filesize
600KB

Download
memory/2000-84-0x0000000007370000-0x000000000737A000-memory.dmp

Filesize
40KB

Download
memory/2000-72-0x0000000075AC0000-0x0000000075B0C000-memory.dmp

Filesize
304KB

Download
memory/2000-27-0x00000000059F0000-0x0000000005D44000-memory.dmp

Filesize
3.3MB

Download
memory/2000-58-0x0000000006530000-0x000000000657C000-memory.dmp

Filesize
304KB

Download
memory/2000-29-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/2000-57-0x0000000005FD0000-0x0000000005FEE000-memory.dmp

Filesize
120KB

Download
memory/2000-20-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/2000-17-0x00000000026F0000-0x0000000002726000-memory.dmp

Filesize
216KB

Download
memory/2000-19-0x00000000052E0000-0x0000000005908000-memory.dmp

Filesize
6.2MB

Download
memory/3052-12-0x0000000008080000-0x000000000811C000-memory.dmp

Filesize
624KB

Download
memory/3052-1-0x0000000000C40000-0x0000000000D28000-memory.dmp

Filesize
928KB

Download
memory/3052-43-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/3052-2-0x0000000005BB0000-0x0000000006154000-memory.dmp

Filesize
5.6MB

Download
memory/3052-3-0x00000000056E0000-0x0000000005772000-memory.dmp

Filesize
584KB

Download
memory/3052-4-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/3052-5-0x00000000058A0000-0x00000000058AA000-memory.dmp

Filesize
40KB

Download
memory/3052-6-0x0000000005B60000-0x0000000005B78000-memory.dmp

Filesize
96KB

Download
memory/3052-0-0x000000007523E000-0x000000007523F000-memory.dmp

Filesize
4KB

Download
memory/3052-7-0x0000000005B90000-0x0000000005B98000-memory.dmp

Filesize
32KB

Download
memory/3052-8-0x000000007523E000-0x000000007523F000-memory.dmp

Filesize
4KB

Download
memory/3052-9-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/3052-10-0x0000000005BA0000-0x0000000005BAA000-memory.dmp

Filesize
40KB

Download
memory/3052-11-0x0000000009740000-0x00000000097F8000-memory.dmp

Filesize
736KB

Download
memory/4464-71-0x0000000006D50000-0x0000000006DF3000-memory.dmp

Filesize
652KB

Download
memory/4464-22-0x0000000004B20000-0x0000000004B42000-memory.dmp

Filesize
136KB

Download
memory/4464-89-0x00000000071E0000-0x00000000071FA000-memory.dmp

Filesize
104KB

Download
memory/4464-90-0x00000000071C0000-0x00000000071C8000-memory.dmp

Filesize
32KB

Download
memory/4464-94-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/4464-21-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/4464-87-0x00000000070D0000-0x00000000070DE000-memory.dmp

Filesize
56KB

Download
memory/4464-86-0x00000000070A0000-0x00000000070B1000-memory.dmp

Filesize
68KB

Download
memory/4464-26-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/4464-88-0x00000000070E0000-0x00000000070F4000-memory.dmp

Filesize
80KB

Download
memory/4464-82-0x00000000074E0000-0x0000000007B5A000-memory.dmp

Filesize
6.5MB

Download
memory/4464-83-0x0000000006EA0000-0x0000000006EBA000-memory.dmp

Filesize
104KB

Download
memory/4464-28-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/4464-59-0x0000000006130000-0x0000000006162000-memory.dmp

Filesize
200KB

Download
memory/4464-60-0x0000000075AC0000-0x0000000075B0C000-memory.dmp

Filesize
304KB

Download
memory/4464-70-0x0000000006B30000-0x0000000006B4E000-memory.dmp

Filesize
120KB

Download
memory/4464-23-0x0000000004BC0000-0x0000000004C26000-memory.dmp

Filesize
408KB

Download
memory/4464-24-0x0000000004C30000-0x0000000004C96000-memory.dmp

Filesize
408KB

Download