remcos | 1f60d73df0c649c1473f8510d75eb83bee9826773f3e920ba3f290d71675faed

Analysis

max time kernel
147s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-09-2024 00:45

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General

Target

PO_33948576383mth_pdf.exe
Size

889KB
MD5

f0689dfa240f533acc8079bcbff064e8
SHA1

b4f9d193d9ff8f0302af25212dffc67292fb752c
SHA256

993f261bd20b55d4a58dc129e2ef3d70ef23a7999e2d6b27d4eca2eb8b57e933
SHA512

12dcb5d05a8811ca7070a98acd844117097849044031920559d7043059d803effb54fe6f0cd0b579e899c964439f9929db6c00afbd6616cf2e949ab2df9c40b4
SSDEEP

24576:EnHNRRr5sff/UYS2DzidV2P6ktb8amzIoI:EnHNRRr5Q0YS2ydwR8TI

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:59321

nnamoo.duckdns.org:59321

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-41EVS0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
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
1180	powershell.exe
5024	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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	PO_33948576383mth_pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4504 set thread context of 752	4504	PO_33948576383mth_pdf.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 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO_33948576383mth_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
1884	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4504	PO_33948576383mth_pdf.exe
5024	powershell.exe
1180	powershell.exe
4504	PO_33948576383mth_pdf.exe
4504	PO_33948576383mth_pdf.exe
4504	PO_33948576383mth_pdf.exe
5024	powershell.exe
1180	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4504	PO_33948576383mth_pdf.exe
Token: SeDebugPrivilege	5024	powershell.exe
Token: SeDebugPrivilege	1180	powershell.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4504 wrote to memory of 5024	4504	PO_33948576383mth_pdf.exe	89
PID 4504 wrote to memory of 5024	4504	PO_33948576383mth_pdf.exe	89
PID 4504 wrote to memory of 5024	4504	PO_33948576383mth_pdf.exe	89
PID 4504 wrote to memory of 1180	4504	PO_33948576383mth_pdf.exe	91
PID 4504 wrote to memory of 1180	4504	PO_33948576383mth_pdf.exe	91
PID 4504 wrote to memory of 1180	4504	PO_33948576383mth_pdf.exe	91
PID 4504 wrote to memory of 1884	4504	PO_33948576383mth_pdf.exe	93
PID 4504 wrote to memory of 1884	4504	PO_33948576383mth_pdf.exe	93
PID 4504 wrote to memory of 1884	4504	PO_33948576383mth_pdf.exe	93
PID 4504 wrote to memory of 1680	4504	PO_33948576383mth_pdf.exe	95
PID 4504 wrote to memory of 1680	4504	PO_33948576383mth_pdf.exe	95
PID 4504 wrote to memory of 1680	4504	PO_33948576383mth_pdf.exe	95
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96
PID 4504 wrote to memory of 752	4504	PO_33948576383mth_pdf.exe	96

C:\Users\Admin\AppData\Local\Temp\PO_33948576383mth_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PO_33948576383mth_pdf.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:4504
- 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\PO_33948576383mth_pdf.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5024
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WZiSWBRtQ.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1180
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WZiSWBRtQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD6D8.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1884
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:1680
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:752

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\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
b69276e54cf05ea8a70f7e9bb6896a89

SHA1
22df3bc998c41c5727916dde069f773399b8e688

SHA256
422681ce6c3f3552ed7e6b5d9c2a8458751575d2702b804edc4f170bea2ff0e0

SHA512
236b5c60944a36babb470430b4348188969a5fa24124beede3b5b331140cfc5f168563a91197ff604a2beca7893f1093f1093d5e94b61a1f207ba5b22a484ae4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4ckcnpuf.x1f.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD6D8.tmp

Filesize
1KB

MD5
b42437aa511976429dfbdcc7ce03ca94

SHA1
970de17bdf8d47602db2cafd4c53a206c56e0534

SHA256
6c519deef987a48d692b1b23f17cb8f03aafd6ba12d9c967163b1e88612ba72b

SHA512
fc2a5a4c4bf8cd052ede3984b02c6501b2087380b9f35e8db8adf5f0d357943996d158bb95a671a11dfb2a176fc0b99e4806487f4239d13ab5cdeb26d3de19dc

Download Submit
memory/752-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-104-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-101-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-105-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/752-106-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1180-85-0x0000000007390000-0x00000000073AA000-memory.dmp

Filesize
104KB

Download
memory/1180-67-0x0000000075380000-0x00000000753CC000-memory.dmp

Filesize
304KB

Download
memory/1180-35-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/1180-93-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/1180-86-0x0000000007370000-0x0000000007378000-memory.dmp

Filesize
32KB

Download
memory/1180-84-0x0000000007290000-0x00000000072A4000-memory.dmp

Filesize
80KB

Download
memory/1180-83-0x0000000007280000-0x000000000728E000-memory.dmp

Filesize
56KB

Download
memory/1180-82-0x0000000007250000-0x0000000007261000-memory.dmp

Filesize
68KB

Download
memory/1180-20-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/4504-10-0x000000000B510000-0x000000000B5AC000-memory.dmp

Filesize
624KB

Download
memory/4504-51-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/4504-1-0x0000000000440000-0x0000000000524000-memory.dmp

Filesize
912KB

Download
memory/4504-2-0x0000000005490000-0x0000000005A34000-memory.dmp

Filesize
5.6MB

Download
memory/4504-3-0x0000000004EE0000-0x0000000004F72000-memory.dmp

Filesize
584KB

Download
memory/4504-4-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/4504-5-0x0000000004F80000-0x0000000004F8A000-memory.dmp

Filesize
40KB

Download
memory/4504-6-0x0000000005460000-0x0000000005472000-memory.dmp

Filesize
72KB

Download
memory/4504-7-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/4504-8-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/4504-9-0x0000000008C80000-0x0000000008D3E000-memory.dmp

Filesize
760KB

Download
memory/4504-0-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/5024-78-0x0000000007710000-0x000000000771A000-memory.dmp

Filesize
40KB

Download
memory/5024-15-0x0000000002A00000-0x0000000002A36000-memory.dmp

Filesize
216KB

Download
memory/5024-23-0x0000000005510000-0x0000000005576000-memory.dmp

Filesize
408KB

Download
memory/5024-81-0x0000000007920000-0x00000000079B6000-memory.dmp

Filesize
600KB

Download
memory/5024-24-0x0000000005580000-0x00000000055E6000-memory.dmp

Filesize
408KB

Download
memory/5024-18-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/5024-16-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/5024-92-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/5024-22-0x0000000005470000-0x0000000005492000-memory.dmp

Filesize
136KB

Download
memory/5024-19-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/5024-34-0x0000000005E30000-0x0000000006184000-memory.dmp

Filesize
3.3MB

Download
memory/5024-17-0x0000000005800000-0x0000000005E28000-memory.dmp

Filesize
6.2MB

Download
memory/5024-50-0x0000000006350000-0x000000000636E000-memory.dmp

Filesize
120KB

Download
memory/5024-54-0x0000000075380000-0x00000000753CC000-memory.dmp

Filesize
304KB

Download
memory/5024-77-0x00000000076A0000-0x00000000076BA000-memory.dmp

Filesize
104KB

Download
memory/5024-66-0x0000000007CE0000-0x000000000835A000-memory.dmp

Filesize
6.5MB

Download
memory/5024-52-0x00000000063F0000-0x000000000643C000-memory.dmp

Filesize
304KB

Download
memory/5024-65-0x0000000007570000-0x0000000007613000-memory.dmp

Filesize
652KB

Download
memory/5024-64-0x0000000006950000-0x000000000696E000-memory.dmp

Filesize
120KB

Download
memory/5024-53-0x0000000007320000-0x0000000007352000-memory.dmp

Filesize
200KB

Download