remcos | defbbd19d8e29a1ceefe5a1773f12aa9ef54acebc8ffc923fa8eb200e74f02bb

Analysis

max time kernel
149s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2024 03:30

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General

Target

Inquiry no. 1051_pdf.exe
Size

925KB
MD5

3cde006756a1b69ae3beb2b628b1d283
SHA1

063c8cf9cf108b562d883d5b420067fb24b37ecf
SHA256

de3d9df15379d0e7a810cff323d05d0c4e5f88856d240f3310097e494c54f9d0
SHA512

6c70633b18a733fade1efceb70ba2547566e1045781da50280f2b72a8e7b6fb6fd3aae5c870b9a7917975a0576bf35063039c89547c577e730c991c07dd1454e
SSDEEP

12288:YQ7kvDoQbr+npWPrUrmPsB9sColkOhvNCqCwe4cpq+ffGET6F8yTegNZV2TtA52b:YQo/CAoCPsPKhCwe4FOGET6FJSKb2Nz

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

eadzagba1.duckdns.org:4877

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-X3UMUO
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 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4916	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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	Inquiry no. 1051_pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3584 set thread context of 4676	3584	Inquiry no. 1051_pdf.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 4 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	Inquiry no. 1051_pdf.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	Inquiry no. 1051_pdf.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
2440	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4916	powershell.exe
4916	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4916	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3584 wrote to memory of 4916	3584	Inquiry no. 1051_pdf.exe	89
PID 3584 wrote to memory of 4916	3584	Inquiry no. 1051_pdf.exe	89
PID 3584 wrote to memory of 4916	3584	Inquiry no. 1051_pdf.exe	89
PID 3584 wrote to memory of 2440	3584	Inquiry no. 1051_pdf.exe	91
PID 3584 wrote to memory of 2440	3584	Inquiry no. 1051_pdf.exe	91
PID 3584 wrote to memory of 2440	3584	Inquiry no. 1051_pdf.exe	91
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93
PID 3584 wrote to memory of 4676	3584	Inquiry no. 1051_pdf.exe	93

C:\Users\Admin\AppData\Local\Temp\Inquiry no. 1051_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Inquiry no. 1051_pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3584
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tEYdryyOxcUotv.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4916
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tEYdryyOxcUotv" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9D59.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2440
- C:\Users\Admin\AppData\Local\Temp\Inquiry no. 1051_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Inquiry no. 1051_pdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4676

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:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vmcmnfvi.3tc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9D59.tmp

Filesize
1KB

MD5
af65f73debee2deb028257a63f506802

SHA1
2789c6c1ab6a888fc30a9189746eef6b4cfefd41

SHA256
f0ecdc97bd0373df27e3dae9089b7090b0cf454b2cac636082823831d15ef7b3

SHA512
ec13a369ae468c6b54fb8669d33e2fbacb85f5f488def99eb3bbed50992dbe35c6d8f9f1d740743924b0e57bca2c0991de5d04ec0506b2287ceae50876b8e774

Download Submit
memory/3584-8-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3584-1-0x0000000000800000-0x00000000008EC000-memory.dmp

Filesize
944KB

Download
memory/3584-4-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3584-5-0x0000000005290000-0x000000000529A000-memory.dmp

Filesize
40KB

Download
memory/3584-6-0x0000000005810000-0x0000000005820000-memory.dmp

Filesize
64KB

Download
memory/3584-7-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/3584-3-0x00000000052B0000-0x0000000005342000-memory.dmp

Filesize
584KB

Download
memory/3584-9-0x0000000006DB0000-0x0000000006E70000-memory.dmp

Filesize
768KB

Download
memory/3584-10-0x00000000093E0000-0x000000000947C000-memory.dmp

Filesize
624KB

Download
memory/3584-40-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3584-2-0x0000000005860000-0x0000000005E04000-memory.dmp

Filesize
5.6MB

Download
memory/3584-0-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/4676-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4916-17-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4916-57-0x00000000077B0000-0x0000000007E2A000-memory.dmp

Filesize
6.5MB

Download
memory/4916-58-0x0000000007160000-0x000000000717A000-memory.dmp

Filesize
104KB

Download
memory/4916-59-0x00000000071D0000-0x00000000071DA000-memory.dmp

Filesize
40KB

Download
memory/4916-60-0x00000000073E0000-0x0000000007476000-memory.dmp

Filesize
600KB

Download
memory/4916-61-0x0000000007360000-0x0000000007371000-memory.dmp

Filesize
68KB

Download
memory/4916-56-0x0000000006E50000-0x0000000006EF3000-memory.dmp

Filesize
652KB

Download
memory/4916-55-0x0000000006430000-0x000000000644E000-memory.dmp

Filesize
120KB

Download
memory/4916-45-0x000000006F2B0000-0x000000006F2FC000-memory.dmp

Filesize
304KB

Download
memory/4916-67-0x0000000007390000-0x000000000739E000-memory.dmp

Filesize
56KB

Download
memory/4916-68-0x00000000073A0000-0x00000000073B4000-memory.dmp

Filesize
80KB

Download
memory/4916-69-0x00000000074A0000-0x00000000074BA000-memory.dmp

Filesize
104KB

Download
memory/4916-70-0x0000000007480000-0x0000000007488000-memory.dmp

Filesize
32KB

Download
memory/4916-73-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4916-44-0x0000000006E10000-0x0000000006E42000-memory.dmp

Filesize
200KB

Download
memory/4916-42-0x0000000005ED0000-0x0000000005F1C000-memory.dmp

Filesize
304KB

Download
memory/4916-41-0x0000000005E40000-0x0000000005E5E000-memory.dmp

Filesize
120KB

Download
memory/4916-22-0x0000000004F20000-0x0000000004F86000-memory.dmp

Filesize
408KB

Download
memory/4916-23-0x0000000005820000-0x0000000005886000-memory.dmp

Filesize
408KB

Download
memory/4916-35-0x0000000005890000-0x0000000005BE4000-memory.dmp

Filesize
3.3MB

Download
memory/4916-21-0x0000000004E80000-0x0000000004EA2000-memory.dmp

Filesize
136KB

Download
memory/4916-19-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4916-18-0x0000000005000000-0x0000000005628000-memory.dmp

Filesize
6.2MB

Download
memory/4916-16-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4916-15-0x0000000002510000-0x0000000002546000-memory.dmp

Filesize
216KB

Download