remcos | 27e999b97c48ce4cb7fe7e86bff08523c07504dd36c5f25566a037d2c77c0414

General

Target
27e999b97c48ce4cb7fe7e86bff08523c07504dd36c5f25566a037d2c77c0414.exe
Size 525KB
Sample260912-nc372avfkc
SHA256 27e999b97c48ce4cb7fe7e86bff08523c07504dd36c5f25566a037d2c77c0414
MD5 b2ff7afdd20c9e993b2ce4b3e89351ac
SHA1 d5476a94e1e640621c8c9e6bc4a1f527356689e0
SHA512 0138fdf1ab0e6a4ba2da6a8da4e48df88a152c1027f0147683c01127b784f7a044435bb714385a86bfe33204c10a8b6cb446ecab3b1f017032e398c18cc6f969
SSDEEP 12288:3cF3UU0AViEhkwkhoo+/TUszmXxr1svZ9Nxt:r1AViE/kHszmXWZl
TLSH
T13AB4AE01BAF1C1B2D57664700939EB35DEBCBC210C359D2B63D61E9ABE301519B3AB72
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

remotehost discovery remcos persistence rat

Malware Config

Extracted

Family

remcos

Version

7.3.1 Pro

Botnet

RemoteHost

C2

www.c168.design:443
c168.design:8080
www.e88-ee88.com:443
e88-ee88.com:8080
8888xx.xyz:8080
www.8888xx.xyz:443
s8net3.live:443
www.s8net3.live:443
www.s8-s8.com:443
www.s88.red:443
www.s88.coach:443
www.s8.immo:443
www.s8.moda:443
www.s8.business:443
www.s8-games.ink:443
s8-games.ink:8080
s8.business:8080
s8.moda:8080
s8.immo:8080
s88.coach:8080
s88.red:8080
s8-s8.com:8080
s8net3.live:8080
gingeronsol.co:8080

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
3
copy_file
WinService.exe
copy_folder
service
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc_c2-GYW49K
screenshot_crypt
true
screenshot_flag
true
screenshot_folder
Screenshots
screenshot_path
%Temp%
screenshot_time
20
startup_value
take_screenshot_option
true
take_screenshot_time
5
take_screenshot_title
notepad;

Signatures

Family: Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Executes dropped EXE 1 IoCs

pid	Process
4120	WinService.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2714045687-1127350534-2056456672-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc_c2-GYW49K = "\"C:\\Users\\Admin\\AppData\\Roaming\\service\\WinService.exe\""	27e999b97c48ce4cb7fe7e86bff08523c07504dd36c5f25566a037d2c77c0414.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc_c2-GYW49K = "\"C:\\Users\\Admin\\AppData\\Roaming\\service\\WinService.exe\""	27e999b97c48ce4cb7fe7e86bff08523c07504dd36c5f25566a037d2c77c0414.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2714045687-1127350534-2056456672-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc_c2-GYW49K = "\"C:\\Users\\Admin\\AppData\\Roaming\\service\\WinService.exe\""	WinService.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc_c2-GYW49K = "\"C:\\Users\\Admin\\AppData\\Roaming\\service\\WinService.exe\""	WinService.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4120 set thread context of 4188	4120	WinService.exe	88

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 2 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	27e999b97c48ce4cb7fe7e86bff08523c07504dd36c5f25566a037d2c77c0414.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WinService.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4120	WinService.exe
4120	WinService.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4120	WinService.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	5980	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	5980	AUDIODG.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4120	WinService.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5888 wrote to memory of 4120	5888	27e999b97c48ce4cb7fe7e86bff08523c07504dd36c5f25566a037d2c77c0414.exe	87
PID 4120 wrote to memory of 4188	4120	WinService.exe	88

C:\Users\Admin\AppData\Local\Temp\27e999b97c48ce4cb7fe7e86bff08523c07504dd36c5f25566a037d2c77c0414.exe
"C:\Users\Admin\AppData\Local\Temp\27e999b97c48ce4cb7fe7e86bff08523c07504dd36c5f25566a037d2c77c0414.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5888
- C:\Users\Admin\AppData\Roaming\service\WinService.exe
  "C:\Users\Admin\AppData\Roaming\service\WinService.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4120
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    PID:4188

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x0000000000000500 0x000000000000050C
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5980

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 184B
SHA256 150c1f3f04ec7f4e43780eea7f959757682968990d6247e4b3458a294f15ab0f
MD5 16fb2ed359487049ac2e6d2a6fd9449d
SHA1 53b74be93af213ec57ebf8744f6d255646f6afc6
SHA512 e59f79862f8c1c8b457c9708a6049418d9cc7911b878537d5818848488405d8a1b0a6e7bff3cc9a1403a1e8ba56623543eacb74e19086bf6006ae7b9d60f9a5b
TLSH
T162C0128D37D0482A78B2E15A40B3002A3A31BD40223D840C35E2234C09B06083142BAF
MD5 SHA1 SHA512 TLSH

Submit Download

WinService.exe

Path C:\Users\Admin\AppData\Roaming\service\WinService.exe
Size 525KB
SHA256 27e999b97c48ce4cb7fe7e86bff08523c07504dd36c5f25566a037d2c77c0414
MD5 b2ff7afdd20c9e993b2ce4b3e89351ac
SHA1 d5476a94e1e640621c8c9e6bc4a1f527356689e0
SHA512 0138fdf1ab0e6a4ba2da6a8da4e48df88a152c1027f0147683c01127b784f7a044435bb714385a86bfe33204c10a8b6cb446ecab3b1f017032e398c18cc6f969
SSDEEP 12288:3cF3UU0AViEhkwkhoo+/TUszmXxr1svZ9Nxt:r1AViE/kHszmXWZl
TLSH
T13AB4AE01BAF1C1B2D57664700939EB35DEBCBC210C359D2B63D61E9ABE301519B3AB72
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4188-1-0x0000000000500000-0x0000000000590000-memory.dmp

Download

memory/4188-6-0x0000000000500000-0x0000000000590000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads