remcos | b006a224fd6aaf4f45486c8fa33b4bf4758dfb5bc904aad2e75400ed2f4b5b22

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/09/2024, 14:34

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General

Target

Quotation.exe
Size

979KB
MD5

8659cc0ca704216852186a28d5f0c90d
SHA1

957cd1e290abc9977a99be7d460d1d77e1aa0fda
SHA256

b006a224fd6aaf4f45486c8fa33b4bf4758dfb5bc904aad2e75400ed2f4b5b22
SHA512

589239fbe4d2e5416650e924f185e96bb9bae0a0b11d37f4ff52a263f985c78082f304ba046979a23d98f7d6b4f4bf7cd9a44d8608a726e758aaaa982f7e998d
SSDEEP

24576:nkgzVXgT3xKSTd2vTKksbMpu2uUOvuYQFEvIg:RgjxKSTd2eFbMoTmBWvR

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

23.95.235.18:2557

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-E0JKXE
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 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2228	powershell.exe
1552	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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	Quotation.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4948 set thread context of 2528	4948	Quotation.exe	100

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	Quotation.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
700	schtasks.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
4948	Quotation.exe
4948	Quotation.exe
4948	Quotation.exe
4948	Quotation.exe
4948	Quotation.exe
4948	Quotation.exe
1552	powershell.exe
2228	powershell.exe
4948	Quotation.exe
4948	Quotation.exe
4948	Quotation.exe
2228	powershell.exe
1552	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4948	Quotation.exe
Token: SeDebugPrivilege	2228	powershell.exe
Token: SeDebugPrivilege	1552	powershell.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 2228	4948	Quotation.exe	93
PID 4948 wrote to memory of 2228	4948	Quotation.exe	93
PID 4948 wrote to memory of 2228	4948	Quotation.exe	93
PID 4948 wrote to memory of 1552	4948	Quotation.exe	95
PID 4948 wrote to memory of 1552	4948	Quotation.exe	95
PID 4948 wrote to memory of 1552	4948	Quotation.exe	95
PID 4948 wrote to memory of 700	4948	Quotation.exe	97
PID 4948 wrote to memory of 700	4948	Quotation.exe	97
PID 4948 wrote to memory of 700	4948	Quotation.exe	97
PID 4948 wrote to memory of 3124	4948	Quotation.exe	99
PID 4948 wrote to memory of 3124	4948	Quotation.exe	99
PID 4948 wrote to memory of 3124	4948	Quotation.exe	99
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100
PID 4948 wrote to memory of 2528	4948	Quotation.exe	100

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:4948
- 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:2228
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RqGYPgyjgV.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1552
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RqGYPgyjgV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCB8D.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:700
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  PID:3124
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2528

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
b73a341d88c400d734473e2e267db993

SHA1
fcf79638f6474ad4a08a65e87192bad7c7da99a3

SHA256
5dd2afc81826c6d133fcdc89a9ae9f88c8c2720ca12b963a279aa7a36f1f1fb7

SHA512
210ebbb66bd250060ae55d15366632a5d54f2cbe4743d2da2bf0d5929ab9db930464900c266a744ba7547567261d62988ed3ffbf4a1140b53bcd4e8fc0f8b5de

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_istlffox.4vh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCB8D.tmp

Filesize
1KB

MD5
5491b3826bffea3fa2b9b032b05c805e

SHA1
09dfcba5d08691fcdc7a85e806dc1301f71e5736

SHA256
7b3921b02bfaad5814098347790594ba2f650da4a032b71b3cc120fcc215fbe4

SHA512
0d3ad9cf17e345133fb4c9728b6dddd8c6b76dd12346e368d1f2a99aa3f064233bec5666fc2b9acc7300eda835f9f653ba62e1ad59c27befb874233ca6536371

Download Submit
memory/1552-19-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/1552-97-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/1552-85-0x0000000007120000-0x00000000071B6000-memory.dmp

Filesize
600KB

Download
memory/1552-84-0x0000000006F10000-0x0000000006F1A000-memory.dmp

Filesize
40KB

Download
memory/1552-70-0x000000006FB10000-0x000000006FB5C000-memory.dmp

Filesize
304KB

Download
memory/1552-48-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/1552-40-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/2228-53-0x0000000006A20000-0x0000000006A6C000-memory.dmp

Filesize
304KB

Download
memory/2228-89-0x0000000007AF0000-0x0000000007B0A000-memory.dmp

Filesize
104KB

Download
memory/2228-18-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/2228-17-0x0000000005550000-0x0000000005B78000-memory.dmp

Filesize
6.2MB

Download
memory/2228-15-0x0000000004EE0000-0x0000000004F16000-memory.dmp

Filesize
216KB

Download
memory/2228-20-0x00000000054C0000-0x00000000054E2000-memory.dmp

Filesize
136KB

Download
memory/2228-22-0x0000000005CF0000-0x0000000005D56000-memory.dmp

Filesize
408KB

Download
memory/2228-23-0x0000000005E50000-0x0000000005EB6000-memory.dmp

Filesize
408KB

Download
memory/2228-96-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/2228-90-0x0000000007AD0000-0x0000000007AD8000-memory.dmp

Filesize
32KB

Download
memory/2228-38-0x0000000005EC0000-0x0000000006214000-memory.dmp

Filesize
3.3MB

Download
memory/2228-16-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/2228-44-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/2228-88-0x00000000079F0000-0x0000000007A04000-memory.dmp

Filesize
80KB

Download
memory/2228-87-0x00000000079E0000-0x00000000079EE000-memory.dmp

Filesize
56KB

Download
memory/2228-86-0x00000000079B0000-0x00000000079C1000-memory.dmp

Filesize
68KB

Download
memory/2228-83-0x00000000077B0000-0x00000000077CA000-memory.dmp

Filesize
104KB

Download
memory/2228-82-0x0000000007DF0000-0x000000000846A000-memory.dmp

Filesize
6.5MB

Download
memory/2228-51-0x0000000006480000-0x000000000649E000-memory.dmp

Filesize
120KB

Download
memory/2228-57-0x0000000006A80000-0x0000000006AB2000-memory.dmp

Filesize
200KB

Download
memory/2228-69-0x0000000007670000-0x0000000007713000-memory.dmp

Filesize
652KB

Download
memory/2228-58-0x000000006FB10000-0x000000006FB5C000-memory.dmp

Filesize
304KB

Download
memory/2228-68-0x0000000006A00000-0x0000000006A1E000-memory.dmp

Filesize
120KB

Download
memory/2528-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-105-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-104-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-98-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2528-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4948-9-0x0000000006D00000-0x0000000006DC0000-memory.dmp

Filesize
768KB

Download
memory/4948-3-0x0000000005A40000-0x0000000005AD2000-memory.dmp

Filesize
584KB

Download
memory/4948-10-0x000000000A8E0000-0x000000000A97C000-memory.dmp

Filesize
624KB

Download
memory/4948-2-0x0000000005F50000-0x00000000064F4000-memory.dmp

Filesize
5.6MB

Download
memory/4948-1-0x0000000000F70000-0x0000000001068000-memory.dmp

Filesize
992KB

Download
memory/4948-8-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/4948-5-0x0000000005B00000-0x0000000005B0A000-memory.dmp

Filesize
40KB

Download
memory/4948-4-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/4948-7-0x000000007518E000-0x000000007518F000-memory.dmp

Filesize
4KB

Download
memory/4948-6-0x0000000005E20000-0x0000000005E38000-memory.dmp

Filesize
96KB

Download
memory/4948-52-0x0000000075180000-0x0000000075930000-memory.dmp

Filesize
7.7MB

Download
memory/4948-0-0x000000007518E000-0x000000007518F000-memory.dmp

Filesize
4KB

Download