remcos | 4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e

General

Target

4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe
Size

1.9MB
MD5

d7c4a8dd324ae3012864217758dba9cc
SHA1

b87e3c1f54c5faed13889c9993e40942fcb5f528
SHA256

4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e
SHA512

177b3d85e6308779e344085dc8231e707baebeb2ba8e3a8e1c353dfc5cfe04d44de7e45522f245a7c7ec961e146b7a01f7d38343a0cc6b04c404517d0a12e1cd
SSDEEP

24576:aD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6jvO:aF+QrFUBgq25eKu6jvO

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

213.183.58.19:4000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
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

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Executes dropped EXE 2 IoCs

pid	Process
2588	sbietrcl.exe
2900	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2588 set thread context of 2900	2588	sbietrcl.exe	34

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 3 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	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe
2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe
2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe
2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe
2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe
2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe
2588	sbietrcl.exe
2588	sbietrcl.exe
2588	sbietrcl.exe
2588	sbietrcl.exe
2588	sbietrcl.exe
2588	sbietrcl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1856	explorer.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe
Token: SeDebugPrivilege	2588	sbietrcl.exe
Token: SeShutdownPrivilege	1856	explorer.exe
Token: SeShutdownPrivilege	1856	explorer.exe
Token: SeShutdownPrivilege	1856	explorer.exe
Token: SeShutdownPrivilege	1856	explorer.exe
Token: SeShutdownPrivilege	1856	explorer.exe
Token: SeShutdownPrivilege	1856	explorer.exe
Token: SeShutdownPrivilege	1856	explorer.exe
Token: SeShutdownPrivilege	1856	explorer.exe
Token: SeShutdownPrivilege	1856	explorer.exe
Token: SeShutdownPrivilege	1856	explorer.exe
Token: SeShutdownPrivilege	1856	explorer.exe
Token: SeShutdownPrivilege	1856	explorer.exe

Suspicious use of FindShellTrayWindow 24 IoCs

pid	Process
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe

Suspicious use of SendNotifyMessage 16 IoCs

pid	Process
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe
1856	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2900	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2588	2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe	32
PID 2756 wrote to memory of 2588	2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe	32
PID 2756 wrote to memory of 2588	2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe	32
PID 2756 wrote to memory of 2588	2756	4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe	32
PID 2588 wrote to memory of 2900	2588	sbietrcl.exe	34
PID 2588 wrote to memory of 2900	2588	sbietrcl.exe	34
PID 2588 wrote to memory of 2900	2588	sbietrcl.exe	34
PID 2588 wrote to memory of 2900	2588	sbietrcl.exe	34
PID 2588 wrote to memory of 2900	2588	sbietrcl.exe	34
PID 2588 wrote to memory of 2900	2588	sbietrcl.exe	34
PID 2588 wrote to memory of 2900	2588	sbietrcl.exe	34
PID 2588 wrote to memory of 2900	2588	sbietrcl.exe	34
PID 2588 wrote to memory of 2900	2588	sbietrcl.exe	34
PID 2588 wrote to memory of 2900	2588	sbietrcl.exe	34

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe
"C:\Users\Admin\AppData\Local\Temp\4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2588
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2900

C:\Windows\explorer.exe
explorer.exe
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
a49774582de6fe1ee4eae9b5c996d53d

SHA1
60fa0693e2343c81453dbf3517033eee3551b8c0

SHA256
fabb54904c57d3d8a7f30046129283e34834fb06211dc0398f9a43b63cc21b03

SHA512
375ada5c7df2d328eb09ae1d1b9c654b55cfb3ff14be501898c2afe37126f5843aaf0a2955f7b60dd957be7ae7ae6db9e5731a7c762e8c8d4b270c445f245f53

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab52F.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
1.9MB

MD5
bf3a70816867d14554f6fb6523bae639

SHA1
1cb3eea78fcf5513c3b644096005b2551e46d063

SHA256
48df94fa6bcb99cce879aa9dafad56aaee693f758d08fa392f9416497b10ba59

SHA512
6450d538884903db6fbd19068c80532c611dc0ded273649b8cb84a6eb544165155b12759ec81e533a39a3a5ec324276c6f5a1960ac78a870ec7ae7dda0a3838c

Download Submit
memory/2756-0-0x0000000074A21000-0x0000000074A22000-memory.dmp

Filesize
4KB

Download
memory/2756-1-0x0000000074A20000-0x0000000074FCB000-memory.dmp

Filesize
5.7MB

Download
memory/2756-2-0x0000000074A20000-0x0000000074FCB000-memory.dmp

Filesize
5.7MB

Download
memory/2756-12-0x0000000074A20000-0x0000000074FCB000-memory.dmp

Filesize
5.7MB

Download
memory/2756-13-0x0000000074A20000-0x0000000074FCB000-memory.dmp

Filesize
5.7MB

Download
memory/2756-25-0x0000000074A20000-0x0000000074FCB000-memory.dmp

Filesize
5.7MB

Download
memory/2756-32-0x0000000074A20000-0x0000000074FCB000-memory.dmp

Filesize
5.7MB

Download
memory/2900-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-55-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-52-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-51-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2900-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads