remcos | cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-01-2025 06:37

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General

Target

Quotation.exe
Size

987KB
MD5

1058789883ec68a66fc099d6cc6fefb9
SHA1

9137b35e3480c2f9fc873e351851d421d8d195d9
SHA256

cff8bf19e834f403b7914c1fae20c0089b2a75a29a769c1e46aa3bb234171d1b
SHA512

54c024fe605a2ac68d5662e20bbb2c8695b8a13dac14e9d9571f001d2f949ffde0fb0a5152e03122336b58390d6e644d35a685a20c7d2f26a6bbcbb50106a4c7
SSDEEP

24576:ovpBEkDWCvU7Ep0EWh04DMRukIFAb4E6T:ovIkDpvU7vtrgI/FAbh6T

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

2.58.56.182:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-GM05WY
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
Remcos family
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
1036	powershell.exe
1680	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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	Quotation.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4552 set thread context of 3804	4552	Quotation.exe	102

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	Quotation.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	Quotation.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
4596	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4552	Quotation.exe
4552	Quotation.exe
4552	Quotation.exe
4552	Quotation.exe
4552	Quotation.exe
4552	Quotation.exe
1036	powershell.exe
1680	powershell.exe
1036	powershell.exe
4552	Quotation.exe
1680	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4552	Quotation.exe
Token: SeDebugPrivilege	1036	powershell.exe
Token: SeDebugPrivilege	1680	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4552 wrote to memory of 1036	4552	Quotation.exe	96
PID 4552 wrote to memory of 1036	4552	Quotation.exe	96
PID 4552 wrote to memory of 1036	4552	Quotation.exe	96
PID 4552 wrote to memory of 1680	4552	Quotation.exe	98
PID 4552 wrote to memory of 1680	4552	Quotation.exe	98
PID 4552 wrote to memory of 1680	4552	Quotation.exe	98
PID 4552 wrote to memory of 4596	4552	Quotation.exe	100
PID 4552 wrote to memory of 4596	4552	Quotation.exe	100
PID 4552 wrote to memory of 4596	4552	Quotation.exe	100
PID 4552 wrote to memory of 3804	4552	Quotation.exe	102
PID 4552 wrote to memory of 3804	4552	Quotation.exe	102
PID 4552 wrote to memory of 3804	4552	Quotation.exe	102
PID 4552 wrote to memory of 3804	4552	Quotation.exe	102
PID 4552 wrote to memory of 3804	4552	Quotation.exe	102
PID 4552 wrote to memory of 3804	4552	Quotation.exe	102
PID 4552 wrote to memory of 3804	4552	Quotation.exe	102
PID 4552 wrote to memory of 3804	4552	Quotation.exe	102
PID 4552 wrote to memory of 3804	4552	Quotation.exe	102
PID 4552 wrote to memory of 3804	4552	Quotation.exe	102

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.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:4552
- 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\Quotation.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1036
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xPfbiDW.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1680
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xPfbiDW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDFD1.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4596
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3804

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
3e4cadfea02fc8f26a862d4859374280

SHA1
d483caee488eb44c24f1bf6e1557f18e87adbf40

SHA256
07b878115ea5a4b284eba7fe2297b1b38a38ad7820ec562ff2e1f409bac37e54

SHA512
e036673ca2e09feb6138b2d86cb9a5b1cfb72bad4e237a1c8be7ddf29b81467384ce5c8220cd2f39c57b7318f5a13d2279522c8b5d7c3411265fbd522f57a5dd

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2zfje3f2.n5c.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDFD1.tmp

Filesize
1KB

MD5
61bc78cf2fdc77f04bce3d3506768c3d

SHA1
23f8f87540deaa7b8b1d97ec90a1d7957224b159

SHA256
a78d06af1e29251a9ec418b788a6806547610b7f432c91e246a321b1f31781c1

SHA512
555bcf554705aa8062615f84db8ca9bd36cea4560a0f7368281d692b8ac70d48a681e40c11b3ff3c47520bc61a5293cc65285bee303b8724efb01ec46c2fabf1

Download Submit
memory/1036-21-0x0000000006000000-0x0000000006022000-memory.dmp

Filesize
136KB

Download
memory/1036-47-0x0000000006CB0000-0x0000000006CFC000-memory.dmp

Filesize
304KB

Download
memory/1036-46-0x0000000006760000-0x000000000677E000-memory.dmp

Filesize
120KB

Download
memory/1036-45-0x00000000062B0000-0x0000000006604000-memory.dmp

Filesize
3.3MB

Download
memory/1036-78-0x000000006FD10000-0x000000006FD5C000-memory.dmp

Filesize
304KB

Download
memory/1036-33-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/1036-97-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/1036-15-0x0000000002E80000-0x0000000002EB6000-memory.dmp

Filesize
216KB

Download
memory/1036-16-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/1036-17-0x0000000005910000-0x0000000005F38000-memory.dmp

Filesize
6.2MB

Download
memory/1036-22-0x00000000060D0000-0x0000000006136000-memory.dmp

Filesize
408KB

Download
memory/1036-18-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/1036-23-0x0000000006140000-0x00000000061A6000-memory.dmp

Filesize
408KB

Download
memory/1680-76-0x00000000075E0000-0x00000000075F1000-memory.dmp

Filesize
68KB

Download
memory/1680-93-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/1680-19-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/1680-90-0x0000000007660000-0x0000000007668000-memory.dmp

Filesize
32KB

Download
memory/1680-89-0x0000000007730000-0x000000000774A000-memory.dmp

Filesize
104KB

Download
memory/1680-88-0x0000000007620000-0x0000000007634000-memory.dmp

Filesize
80KB

Download
memory/1680-44-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/1680-77-0x0000000007610000-0x000000000761E000-memory.dmp

Filesize
56KB

Download
memory/1680-75-0x0000000007670000-0x0000000007706000-memory.dmp

Filesize
600KB

Download
memory/1680-68-0x0000000007080000-0x000000000709E000-memory.dmp

Filesize
120KB

Download
memory/1680-57-0x0000000006680000-0x00000000066B2000-memory.dmp

Filesize
200KB

Download
memory/1680-74-0x0000000007440000-0x000000000744A000-memory.dmp

Filesize
40KB

Download
memory/1680-20-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/1680-72-0x0000000007A20000-0x000000000809A000-memory.dmp

Filesize
6.5MB

Download
memory/1680-73-0x00000000073E0000-0x00000000073FA000-memory.dmp

Filesize
104KB

Download
memory/1680-58-0x000000006FD10000-0x000000006FD5C000-memory.dmp

Filesize
304KB

Download
memory/1680-69-0x00000000070A0000-0x0000000007143000-memory.dmp

Filesize
652KB

Download
memory/3804-101-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-56-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-55-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-54-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-71-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-48-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-50-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-51-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-49-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-100-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-99-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-102-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-98-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-103-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-104-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3804-105-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4552-53-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/4552-3-0x0000000004F90000-0x0000000005022000-memory.dmp

Filesize
584KB

Download
memory/4552-2-0x00000000054A0000-0x0000000005A44000-memory.dmp

Filesize
5.6MB

Download
memory/4552-1-0x0000000000440000-0x000000000053E000-memory.dmp

Filesize
1016KB

Download
memory/4552-4-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/4552-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

Filesize
4KB

Download
memory/4552-5-0x0000000004F40000-0x0000000004F4A000-memory.dmp

Filesize
40KB

Download
memory/4552-6-0x00000000051C0000-0x000000000525C000-memory.dmp

Filesize
624KB

Download
memory/4552-7-0x00000000062A0000-0x00000000062BE000-memory.dmp

Filesize
120KB

Download
memory/4552-8-0x00000000747AE000-0x00000000747AF000-memory.dmp

Filesize
4KB

Download
memory/4552-9-0x00000000747A0000-0x0000000074F50000-memory.dmp

Filesize
7.7MB

Download
memory/4552-10-0x0000000008DC0000-0x0000000008E84000-memory.dmp

Filesize
784KB

Download