remcos | 9637d5e3fdd07fe88d08a27d180b156e9eb8aad744b0b1195cd3595b73c0e575

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12-09-2024 03:56

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General

Target

New Inquiry.exe
Size

965KB
MD5

d5c37d93192e0f422d5d137ec4aa2b8c
SHA1

b7beeb30b007534621de8a6b3290cb5d1fbd1dec
SHA256

92afc1bb9af8c414b7501e82e840f575d992ba24ff9b7abcce570bd056beec51
SHA512

071b1c3a95096fa76231f61f33e0fdc95a4b7ee0e18d7256edac807219c83ffcaf540921cfa710a31a4728b80739dbcd1a93d31d70e95322d29b7dac52f506f9
SSDEEP

24576:viwf65QYsrvEByN6wyNgMYQ2na5LN46w/APTUTQnuf7nk:meHrvmyRyY6hATQnufT

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

198.46.174.158:2404

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-130QB0
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
5048	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	New Inquiry.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4636 set thread context of 4744	4636	New Inquiry.exe	96

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	New Inquiry.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	New Inquiry.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
900	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4636	New Inquiry.exe
4636	New Inquiry.exe
4636	New Inquiry.exe
4636	New Inquiry.exe
4636	New Inquiry.exe
4636	New Inquiry.exe
4636	New Inquiry.exe
5048	powershell.exe
5048	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4636	New Inquiry.exe
Token: SeDebugPrivilege	5048	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4636 wrote to memory of 5048	4636	New Inquiry.exe	92
PID 4636 wrote to memory of 5048	4636	New Inquiry.exe	92
PID 4636 wrote to memory of 5048	4636	New Inquiry.exe	92
PID 4636 wrote to memory of 900	4636	New Inquiry.exe	94
PID 4636 wrote to memory of 900	4636	New Inquiry.exe	94
PID 4636 wrote to memory of 900	4636	New Inquiry.exe	94
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96
PID 4636 wrote to memory of 4744	4636	New Inquiry.exe	96

C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe
"C:\Users\Admin\AppData\Local\Temp\New Inquiry.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:4636
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ohrFKEHh.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5048
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ohrFKEHh" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBDC2.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:900
- C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe
  "C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4744

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_var4ejsx.mbl.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBDC2.tmp

Filesize
1KB

MD5
15c248b13d80c1137a6313d37c439e7a

SHA1
2583126639d1a53fc15d2e5741760f49a574c363

SHA256
5df67fe98aa7c655bd93349ebe51975015336f76a916b97570ddf2496efc0039

SHA512
03c81e5976fba63cc460c473d2a0ab34b2bcd38274769ef6f5b2040c604e3b6309941b5484852006f010291811c4ebf2ed8e3b1bd9e3f080991a21d90b149e0c

Download Submit
memory/4636-6-0x0000000005610000-0x0000000005620000-memory.dmp

Filesize
64KB

Download
memory/4636-3-0x0000000005330000-0x00000000053C2000-memory.dmp

Filesize
584KB

Download
memory/4636-4-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/4636-5-0x00000000054E0000-0x00000000054EA000-memory.dmp

Filesize
40KB

Download
memory/4636-31-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/4636-7-0x0000000074E5E000-0x0000000074E5F000-memory.dmp

Filesize
4KB

Download
memory/4636-8-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/4636-9-0x0000000006E40000-0x0000000006F00000-memory.dmp

Filesize
768KB

Download
memory/4636-10-0x0000000009470000-0x000000000950C000-memory.dmp

Filesize
624KB

Download
memory/4636-0-0x0000000074E5E000-0x0000000074E5F000-memory.dmp

Filesize
4KB

Download
memory/4636-2-0x00000000057E0000-0x0000000005D84000-memory.dmp

Filesize
5.6MB

Download
memory/4636-1-0x0000000000860000-0x0000000000958000-memory.dmp

Filesize
992KB

Download
memory/4744-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4744-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5048-60-0x0000000006810000-0x000000000682E000-memory.dmp

Filesize
120KB

Download
memory/5048-71-0x00000000078D0000-0x00000000078EA000-memory.dmp

Filesize
104KB

Download
memory/5048-19-0x0000000005410000-0x0000000005A38000-memory.dmp

Filesize
6.2MB

Download
memory/5048-61-0x0000000007290000-0x0000000007333000-memory.dmp

Filesize
652KB

Download
memory/5048-62-0x0000000007BE0000-0x000000000825A000-memory.dmp

Filesize
6.5MB

Download
memory/5048-63-0x0000000007590000-0x00000000075AA000-memory.dmp

Filesize
104KB

Download
memory/5048-64-0x0000000007600000-0x000000000760A000-memory.dmp

Filesize
40KB

Download
memory/5048-65-0x0000000007810000-0x00000000078A6000-memory.dmp

Filesize
600KB

Download
memory/5048-66-0x0000000007790000-0x00000000077A1000-memory.dmp

Filesize
68KB

Download
memory/5048-49-0x0000000006830000-0x0000000006862000-memory.dmp

Filesize
200KB

Download
memory/5048-15-0x0000000004C90000-0x0000000004CC6000-memory.dmp

Filesize
216KB

Download
memory/5048-69-0x00000000077C0000-0x00000000077CE000-memory.dmp

Filesize
56KB

Download
memory/5048-70-0x00000000077D0000-0x00000000077E4000-memory.dmp

Filesize
80KB

Download
memory/5048-50-0x00000000756E0000-0x000000007572C000-memory.dmp

Filesize
304KB

Download
memory/5048-72-0x00000000078B0000-0x00000000078B8000-memory.dmp

Filesize
32KB

Download
memory/5048-75-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/5048-45-0x00000000062A0000-0x00000000062EC000-memory.dmp

Filesize
304KB

Download
memory/5048-44-0x0000000006260000-0x000000000627E000-memory.dmp

Filesize
120KB

Download
memory/5048-41-0x0000000005E80000-0x00000000061D4000-memory.dmp

Filesize
3.3MB

Download
memory/5048-27-0x0000000005AC0000-0x0000000005AE2000-memory.dmp

Filesize
136KB

Download
memory/5048-28-0x0000000005B60000-0x0000000005BC6000-memory.dmp

Filesize
408KB

Download
memory/5048-29-0x0000000005BD0000-0x0000000005C36000-memory.dmp

Filesize
408KB

Download
memory/5048-17-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/5048-18-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/5048-20-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download