remcos | b4d1b79459e02f66fae43fa71b6422be611fc7595306875ad87eddaa0e07ac5c

Analysis

max time kernel
148s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-12-2024 09:16

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General

Target

Quotation.exe
Size

1.0MB
MD5

67b86e9595c2d0d2f44454ec239fda56
SHA1

1a44600a7b4e010174d99c152dc20fef1d84061a
SHA256

905eb3c354f4f1210442b25983482a2612d6354df9c3d26beb9a0bdaf1e9ac04
SHA512

73fb542c826f8e75683e7944f0f616d2317d17c5cc153610e7d2107c6da7458da00c89e797aa4f59c92d92095dcf884ef9474cf7ac5dcc4bf526aa8389486604
SSDEEP

24576:BHAXaxESQklIlQcZrVs+3FvrVOuHvKYKrVFmdGp7N1/TBt:BgAlFUrv3FjwuPKYaGK/t

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

185.241.208.87:2404

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-7DRXD9
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
1300	powershell.exe
4588	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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	Quotation.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4952 set thread context of 1964	4952	Quotation.exe	95

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	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
2336	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4952	Quotation.exe
4952	Quotation.exe
4952	Quotation.exe
4952	Quotation.exe
4952	Quotation.exe
4952	Quotation.exe
1300	powershell.exe
4588	powershell.exe
4952	Quotation.exe
1300	powershell.exe
4588	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4952	Quotation.exe
Token: SeDebugPrivilege	1300	powershell.exe
Token: SeDebugPrivilege	4588	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 1300	4952	Quotation.exe	89
PID 4952 wrote to memory of 1300	4952	Quotation.exe	89
PID 4952 wrote to memory of 1300	4952	Quotation.exe	89
PID 4952 wrote to memory of 4588	4952	Quotation.exe	91
PID 4952 wrote to memory of 4588	4952	Quotation.exe	91
PID 4952 wrote to memory of 4588	4952	Quotation.exe	91
PID 4952 wrote to memory of 2336	4952	Quotation.exe	93
PID 4952 wrote to memory of 2336	4952	Quotation.exe	93
PID 4952 wrote to memory of 2336	4952	Quotation.exe	93
PID 4952 wrote to memory of 1964	4952	Quotation.exe	95
PID 4952 wrote to memory of 1964	4952	Quotation.exe	95
PID 4952 wrote to memory of 1964	4952	Quotation.exe	95
PID 4952 wrote to memory of 1964	4952	Quotation.exe	95
PID 4952 wrote to memory of 1964	4952	Quotation.exe	95
PID 4952 wrote to memory of 1964	4952	Quotation.exe	95
PID 4952 wrote to memory of 1964	4952	Quotation.exe	95
PID 4952 wrote to memory of 1964	4952	Quotation.exe	95
PID 4952 wrote to memory of 1964	4952	Quotation.exe	95
PID 4952 wrote to memory of 1964	4952	Quotation.exe	95

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:4952
- 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:1300
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\hVWuVAdS.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4588
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hVWuVAdS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1D37.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2336
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  PID:1964

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

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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
1997d84d1ef1e99ea13663936873c04c

SHA1
5dc93727e7611e6a9584d89fb3136912e2b7d104

SHA256
8301e939233ddf7acee133dcd8a8483489b8caf9b42982c734c1abaa0cdd94a3

SHA512
4b5c7516b01507536715cc473046432499cfd18093968fba8547b0894a299208fd49d1c1c380cbf9517fd0d352c4fd90922d0469eb3c2cc9054612643051cb45

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_j01y1y2g.etv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1D37.tmp

Filesize
1KB

MD5
71444c804d06b35236cf130576296ec4

SHA1
fad15f587de78bd55d172bb38c40c002e64ba5c7

SHA256
e02fcb703c405ed4ffec319ee37e23f479d1371bfc0e31e0af3b71b1b7e5346f

SHA512
3b3a7232305a4ed382d08931b325868fe6b6242759e65b9584e9ae40d064c2b0004cbe9670deb863be22536bae2737f7bed39592b3c74d49ce336aa15bc5279b

Download Submit
memory/1300-20-0x0000000005120000-0x0000000005142000-memory.dmp

Filesize
136KB

Download
memory/1300-91-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/1300-52-0x00000000060D0000-0x00000000060EE000-memory.dmp

Filesize
120KB

Download
memory/1300-53-0x0000000006590000-0x00000000065DC000-memory.dmp

Filesize
304KB

Download
memory/1300-65-0x00000000070A0000-0x00000000070BE000-memory.dmp

Filesize
120KB

Download
memory/1300-85-0x0000000007720000-0x0000000007728000-memory.dmp

Filesize
32KB

Download
memory/1300-84-0x0000000007740000-0x000000000775A000-memory.dmp

Filesize
104KB

Download
memory/1300-15-0x0000000001030000-0x0000000001066000-memory.dmp

Filesize
216KB

Download
memory/1300-16-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/1300-17-0x0000000005620000-0x0000000005C48000-memory.dmp

Filesize
6.2MB

Download
memory/1300-18-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/1300-83-0x0000000007640000-0x0000000007654000-memory.dmp

Filesize
80KB

Download
memory/1300-82-0x0000000007630000-0x000000000763E000-memory.dmp

Filesize
56KB

Download
memory/1300-22-0x0000000005460000-0x00000000054C6000-memory.dmp

Filesize
408KB

Download
memory/1300-81-0x0000000007600000-0x0000000007611000-memory.dmp

Filesize
68KB

Download
memory/1300-80-0x0000000007680000-0x0000000007716000-memory.dmp

Filesize
600KB

Download
memory/1300-34-0x0000000005C50000-0x0000000005FA4000-memory.dmp

Filesize
3.3MB

Download
memory/1300-44-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/1300-79-0x0000000007470000-0x000000000747A000-memory.dmp

Filesize
40KB

Download
memory/1300-67-0x0000000007A50000-0x00000000080CA000-memory.dmp

Filesize
6.5MB

Download
memory/1300-68-0x0000000007400000-0x000000000741A000-memory.dmp

Filesize
104KB

Download
memory/1300-54-0x00000000066B0000-0x00000000066E2000-memory.dmp

Filesize
200KB

Download
memory/1300-55-0x0000000075C00000-0x0000000075C4C000-memory.dmp

Filesize
304KB

Download
memory/1300-21-0x0000000005240000-0x00000000052A6000-memory.dmp

Filesize
408KB

Download
memory/1300-66-0x00000000070D0000-0x0000000007173000-memory.dmp

Filesize
652KB

Download
memory/1964-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1964-93-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1964-100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1964-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1964-97-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1964-98-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1964-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1964-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1964-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1964-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1964-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1964-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4588-92-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/4588-45-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/4588-19-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/4588-69-0x0000000075C00000-0x0000000075C4C000-memory.dmp

Filesize
304KB

Download
memory/4588-32-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/4952-9-0x00000000074A0000-0x0000000007562000-memory.dmp

Filesize
776KB

Download
memory/4952-1-0x0000000000060000-0x000000000016C000-memory.dmp

Filesize
1.0MB

Download
memory/4952-8-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/4952-2-0x0000000005020000-0x00000000055C4000-memory.dmp

Filesize
5.6MB

Download
memory/4952-3-0x0000000004B50000-0x0000000004BE2000-memory.dmp

Filesize
584KB

Download
memory/4952-6-0x0000000004CF0000-0x0000000004D08000-memory.dmp

Filesize
96KB

Download
memory/4952-10-0x0000000009C70000-0x0000000009D0C000-memory.dmp

Filesize
624KB

Download
memory/4952-7-0x000000007535E000-0x000000007535F000-memory.dmp

Filesize
4KB

Download
memory/4952-4-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/4952-51-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/4952-0-0x000000007535E000-0x000000007535F000-memory.dmp

Filesize
4KB

Download
memory/4952-5-0x0000000004C00000-0x0000000004C0A000-memory.dmp

Filesize
40KB

Download