remcos | d96a1d9636b445ba601cc39c26f27d9ba9c420879fbfd1b7018358b024185a00

General

Target
d96a1d9636b445ba601cc39c26f27d9ba9c420879fbfd1b7018358b024185a00.exe
Size 525KB
Sample260909-sp67nsgj21
SHA256 d96a1d9636b445ba601cc39c26f27d9ba9c420879fbfd1b7018358b024185a00
MD5 6e3a16e22838ec02175862eb5891d660
SHA1 28cf86e7d3bdf684453d8e3353a0d10cabd6e81e
SHA512 045e4fb3430bc05cd60859828bcfc9f298837cb6cb2cc3ebfbd5b49cc6c8768c36cf9738fd5e43657dad6f10cd0fc5b1a4331f18660285000e780a9ab18ba320
SSDEEP 12288:PcF3UU0AViEhkwkhoo+/TUszmXxr1svZ9Nxt:T1AViE/kHszmXWZh
TLSH
T141B4AE01BAF1C1B2D57664700939EB35CEBCBC211C359D2B63D61E9ABE301519B3AB72
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.lv88.today:443
www.lv88a.net:443
www.789win668.com:443
www.u888.tel:443
www.u888.vet:443
www.au88.mex.com:443
www.88bet.hair:443
www.temza.co:443
www.win-win99.com.tw:443
www.tg88.london:443
www.cinemaxx1.me:443
www.kolaybet.club:443
www.688vbet.pro:443
www.babytroll.ai:443
www.c168.design:443
www.tk88vn.best:443

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
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
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc_c2-HPTT2Z
screenshot_crypt
true
screenshot_flag
true
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2832	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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc_c2-HPTT2Z = "\"C:\\Users\\Admin\\AppData\\Roaming\\service\\WinService.exe\""	WinService.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-189034102-168398478-1159367937-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc_c2-HPTT2Z = "\"C:\\Users\\Admin\\AppData\\Roaming\\service\\WinService.exe\""	d96a1d9636b445ba601cc39c26f27d9ba9c420879fbfd1b7018358b024185a00.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc_c2-HPTT2Z = "\"C:\\Users\\Admin\\AppData\\Roaming\\service\\WinService.exe\""	d96a1d9636b445ba601cc39c26f27d9ba9c420879fbfd1b7018358b024185a00.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-189034102-168398478-1159367937-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc_c2-HPTT2Z = "\"C:\\Users\\Admin\\AppData\\Roaming\\service\\WinService.exe\""	WinService.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2832 set thread context of 5520	2832	WinService.exe	92

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	d96a1d9636b445ba601cc39c26f27d9ba9c420879fbfd1b7018358b024185a00.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WinService.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	4700	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	4700	AUDIODG.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2832	WinService.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2832	WinService.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2832	WinService.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 2832	4648	d96a1d9636b445ba601cc39c26f27d9ba9c420879fbfd1b7018358b024185a00.exe	89
PID 2832 wrote to memory of 5520	2832	WinService.exe	92

C:\Users\Admin\AppData\Local\Temp\d96a1d9636b445ba601cc39c26f27d9ba9c420879fbfd1b7018358b024185a00.exe
"C:\Users\Admin\AppData\Local\Temp\d96a1d9636b445ba601cc39c26f27d9ba9c420879fbfd1b7018358b024185a00.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4648
- 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 use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2832
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    PID:5520

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x00000000000004FC 0x00000000000004F4
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4700

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 260B
SHA256 0b1499ba66d2dda0d2966afa2c89659e256abb6827d7909d1f789a5fe8fb1d07
MD5 c8e76ab45c465e99b645f0b0adaf16fa
SHA1 071286d5f990a710f81ad559665840b7e1e0839f
SHA512 57c814897050a08d6ae408b47ada5b06d61cd800c79a3836bb34724c2eff0d6633f563ef65cd09f40af7846ce1d5e79ca7776dde43650e808b6ee53abe0f9dcf
TLSH
T122D02B8368A54BAE0E963171C6B6D01720542E0570627D44F65784C41697459662B9C7
MD5 SHA1 SHA512 TLSH

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WinService.exe

Path C:\Users\Admin\AppData\Roaming\service\WinService.exe
Size 525KB
SHA256 d96a1d9636b445ba601cc39c26f27d9ba9c420879fbfd1b7018358b024185a00
MD5 6e3a16e22838ec02175862eb5891d660
SHA1 28cf86e7d3bdf684453d8e3353a0d10cabd6e81e
SHA512 045e4fb3430bc05cd60859828bcfc9f298837cb6cb2cc3ebfbd5b49cc6c8768c36cf9738fd5e43657dad6f10cd0fc5b1a4331f18660285000e780a9ab18ba320
SSDEEP 12288:PcF3UU0AViEhkwkhoo+/TUszmXxr1svZ9Nxt:T1AViE/kHszmXWZh
TLSH
T141B4AE01BAF1C1B2D57664700939EB35CEBCBC211C359D2B63D61E9ABE301519B3AB72
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/5520-3-0x0000000000610000-0x00000000006A0000-memory.dmp

Download

memory/5520-6-0x0000000000610000-0x00000000006A0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads