remcos | 3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b

General

Target

3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
Size

1.7MB
MD5

cdc138c151b5584f3a23dc7b72fa413d
SHA1

7fd4a26b4ea15cd173e5f850324186221e08ada2
SHA256

3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b
SHA512

0baaabab13594b6729697dec47535433bfb99a97f98cd6e1f9d23148b640d07e0386b45eabc7f69c05bf5b3d729bca8e6962542b9b4e02cdd43211fe31ea1f75
SSDEEP

24576:YD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjomy1:Yp7E+QrFUBgq2vy1

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
472	sbietrcl.exe
1092	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 472 set thread context of 1092	472	sbietrcl.exe	30

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	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
472	sbietrcl.exe
472	sbietrcl.exe
472	sbietrcl.exe
472	sbietrcl.exe
472	sbietrcl.exe
472	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
Token: SeDebugPrivilege	472	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1092	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 472	2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe	29
PID 2604 wrote to memory of 472	2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe	29
PID 2604 wrote to memory of 472	2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe	29
PID 2604 wrote to memory of 472	2604	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe	29
PID 472 wrote to memory of 1092	472	sbietrcl.exe	30
PID 472 wrote to memory of 1092	472	sbietrcl.exe	30
PID 472 wrote to memory of 1092	472	sbietrcl.exe	30
PID 472 wrote to memory of 1092	472	sbietrcl.exe	30
PID 472 wrote to memory of 1092	472	sbietrcl.exe	30
PID 472 wrote to memory of 1092	472	sbietrcl.exe	30
PID 472 wrote to memory of 1092	472	sbietrcl.exe	30
PID 472 wrote to memory of 1092	472	sbietrcl.exe	30
PID 472 wrote to memory of 1092	472	sbietrcl.exe	30
PID 472 wrote to memory of 1092	472	sbietrcl.exe	30

C:\Users\Admin\AppData\Local\Temp\3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
"C:\Users\Admin\AppData\Local\Temp\3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.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:2604
- 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:472
- - 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:1092

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Cab1574.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.7MB

MD5
26c21b57cc09a922cdf66e45677d2954

SHA1
f062954190d45453d23d12030d375d238a6e1158

SHA256
69baf69f4346ad0903a5afd82ba9025ada2ddc1cd0f187b75a0b4c8d73a743da

SHA512
5053484d97663232848e2a9a9d1f5f5b8ddbce34bfd9566ecbfbfc2a11536ed4ba6c6221a96c1d1223b55523f5933e633080393ffcf0b45e26fc4500dd57d23e

Download Submit
memory/472-41-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/472-31-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/472-58-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/472-32-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/472-40-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/1092-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1092-52-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1092-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1092-57-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1092-53-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1092-56-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1092-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1092-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1092-47-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1092-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1092-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1092-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2604-23-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2604-0-0x0000000074AB1000-0x0000000074AB2000-memory.dmp

Filesize
4KB

Download
memory/2604-10-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2604-2-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2604-1-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2604-11-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2604-30-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads