remcos | c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2

General

Target

c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe
Size

1.5MB
MD5

bb057a39731b995515ae1fb31aab8997
SHA1

c818a0e6f6d492c53956b56a0021b4e7ceeac969
SHA256

c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2
SHA512

d727bf1e6dd02b9779072444ebec0fa6b4f98251b09541431bc13710b1ec60764412d5ffd892a11adf82b2e62af302dfd05fc57d2b1e702b5d0fdebfc817ad66
SSDEEP

24576:6D39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJlO/a:6F+QrFUBgq25eKX

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

Executes dropped EXE 2 IoCs

pid	Process
2804	sbietrcl.exe
2716	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2804 set thread context of 2716	2804	sbietrcl.exe	32

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	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe
2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe
2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe
2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe
2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe
2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe
2804	sbietrcl.exe
2804	sbietrcl.exe
2804	sbietrcl.exe
2804	sbietrcl.exe
2804	sbietrcl.exe
2804	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe
Token: SeDebugPrivilege	2804	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2716	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2596 wrote to memory of 2804	2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe	30
PID 2596 wrote to memory of 2804	2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe	30
PID 2596 wrote to memory of 2804	2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe	30
PID 2596 wrote to memory of 2804	2596	c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe	30
PID 2804 wrote to memory of 2716	2804	sbietrcl.exe	32
PID 2804 wrote to memory of 2716	2804	sbietrcl.exe	32
PID 2804 wrote to memory of 2716	2804	sbietrcl.exe	32
PID 2804 wrote to memory of 2716	2804	sbietrcl.exe	32
PID 2804 wrote to memory of 2716	2804	sbietrcl.exe	32
PID 2804 wrote to memory of 2716	2804	sbietrcl.exe	32
PID 2804 wrote to memory of 2716	2804	sbietrcl.exe	32
PID 2804 wrote to memory of 2716	2804	sbietrcl.exe	32
PID 2804 wrote to memory of 2716	2804	sbietrcl.exe	32
PID 2804 wrote to memory of 2716	2804	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.exe
"C:\Users\Admin\AppData\Local\Temp\c35b7a09b11fde91e3e665b53f63b1843b8e91bcd361614c7cc14e9be3cd31f2.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:2596
- 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:2804
- - 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:2716

Network

MITRE ATT&CK Enterprise v15

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

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\Local\Temp\CabC4D5.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.5MB

MD5
e9bea439f7db65fb94861c01e0b60e4c

SHA1
eccb2c14e6feee4fd053ad65e686b1c26904ecd1

SHA256
7830f6e66a4e37fefe8e769fcd7c1ece11b99af11e31cad81daffe30785ac264

SHA512
522b55b49d3a27a57edacffb90df427b65bfb5a450a5e5a00e8c2d7aed01b8584c6179bc79814e7b02ef971aed7d221fa1fb7b217fda24be39bcf185e006d2d2

Download Submit
memory/2596-8-0x00000000747E0000-0x0000000074D8B000-memory.dmp

Filesize
5.7MB

Download
memory/2596-9-0x00000000747E0000-0x0000000074D8B000-memory.dmp

Filesize
5.7MB

Download
memory/2596-10-0x00000000747E0000-0x0000000074D8B000-memory.dmp

Filesize
5.7MB

Download
memory/2596-11-0x00000000747E0000-0x0000000074D8B000-memory.dmp

Filesize
5.7MB

Download
memory/2596-0-0x00000000747E1000-0x00000000747E2000-memory.dmp

Filesize
4KB

Download
memory/2596-29-0x00000000747E0000-0x0000000074D8B000-memory.dmp

Filesize
5.7MB

Download
memory/2716-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2716-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2716-66-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2716-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2716-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2716-53-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2716-51-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2716-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2716-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2716-56-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2716-62-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2716-57-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2804-61-0x00000000747E0000-0x0000000074D8B000-memory.dmp

Filesize
5.7MB

Download
memory/2804-31-0x00000000747E0000-0x0000000074D8B000-memory.dmp

Filesize
5.7MB

Download
memory/2804-30-0x00000000747E0000-0x0000000074D8B000-memory.dmp

Filesize
5.7MB

Download
memory/2804-40-0x00000000747E0000-0x0000000074D8B000-memory.dmp

Filesize
5.7MB

Download
memory/2804-39-0x00000000747E0000-0x0000000074D8B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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