remcos | ea15b09762985bc16b997558583acb28d9fd9e86eb95b2df204956211ec541d7

General

Target

d0b9e457b2d16d654f95b599d86da4c0N.exe
Size

1.5MB
MD5

d0b9e457b2d16d654f95b599d86da4c0
SHA1

84b6f6e4f1d9e859ac733e37051f3f6c7e276c76
SHA256

ea15b09762985bc16b997558583acb28d9fd9e86eb95b2df204956211ec541d7
SHA512

2c08ee289fab2d9cd1e0e42202f6f80ba347d70a7bcd4c05578daacc22526dc201cfa554c8410337f1d83fb7c820d7ef7331038b2bbcd34345857f3415fe7971
SSDEEP

24576:ED39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjouO:Ep7E+QrFUBgq2e

Score

10^/10

remcos host credential_access 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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Executes dropped EXE 2 IoCs

pid	Process
2656	sbietrcl.exe
2616	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
3032	d0b9e457b2d16d654f95b599d86da4c0N.exe

Reads user/profile data of web browsers 2 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

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-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	d0b9e457b2d16d654f95b599d86da4c0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2656 set thread context of 2616	2656	sbietrcl.exe	31

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	d0b9e457b2d16d654f95b599d86da4c0N.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
3032	d0b9e457b2d16d654f95b599d86da4c0N.exe
3032	d0b9e457b2d16d654f95b599d86da4c0N.exe
3032	d0b9e457b2d16d654f95b599d86da4c0N.exe
3032	d0b9e457b2d16d654f95b599d86da4c0N.exe
3032	d0b9e457b2d16d654f95b599d86da4c0N.exe
3032	d0b9e457b2d16d654f95b599d86da4c0N.exe
2656	sbietrcl.exe
2656	sbietrcl.exe
2656	sbietrcl.exe
2656	sbietrcl.exe
2656	sbietrcl.exe
2656	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3032	d0b9e457b2d16d654f95b599d86da4c0N.exe
Token: SeDebugPrivilege	2656	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2616	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2656	3032	d0b9e457b2d16d654f95b599d86da4c0N.exe	30
PID 3032 wrote to memory of 2656	3032	d0b9e457b2d16d654f95b599d86da4c0N.exe	30
PID 3032 wrote to memory of 2656	3032	d0b9e457b2d16d654f95b599d86da4c0N.exe	30
PID 3032 wrote to memory of 2656	3032	d0b9e457b2d16d654f95b599d86da4c0N.exe	30
PID 2656 wrote to memory of 2616	2656	sbietrcl.exe	31
PID 2656 wrote to memory of 2616	2656	sbietrcl.exe	31
PID 2656 wrote to memory of 2616	2656	sbietrcl.exe	31
PID 2656 wrote to memory of 2616	2656	sbietrcl.exe	31
PID 2656 wrote to memory of 2616	2656	sbietrcl.exe	31
PID 2656 wrote to memory of 2616	2656	sbietrcl.exe	31
PID 2656 wrote to memory of 2616	2656	sbietrcl.exe	31
PID 2656 wrote to memory of 2616	2656	sbietrcl.exe	31
PID 2656 wrote to memory of 2616	2656	sbietrcl.exe	31
PID 2656 wrote to memory of 2616	2656	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\d0b9e457b2d16d654f95b599d86da4c0N.exe
"C:\Users\Admin\AppData\Local\Temp\d0b9e457b2d16d654f95b599d86da4c0N.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:3032
- 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:2656
- - 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:2616

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\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
0715801808710c21b800c9076d646bbb

SHA1
9fee96e5015c1d4dfa4826726202a2e846a21ca5

SHA256
269172a961b1f43d46412a6ed6fe8c956b7c3d335079034df7156eed01d28772

SHA512
226deea5cf03a6526534e3a217674a644a7d6972421027bb6d47a857a5b6bc6119455ea6c445d8067401abac352b7eac52abad633150ad09b03a87cfef35729c

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab34B7.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.5MB

MD5
9eaf6b8bf55306453a8da2fb1ac4836d

SHA1
c0149adf8000b361db0a4d2e7f8f651d75f3c81b

SHA256
90d994a58c57c743e4937798e7be16bc0ead44c89b4082ce0ba9a2b928d380ad

SHA512
9b77c9e34e41854c1555621469bba852a5f0ac2d2bec7e201d000cf16735bcd1c349f722752cf738bc8508d3197978c5d31da854a83c2bfb6cc49f40e7f30986

Download Submit
memory/2616-57-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2616-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2616-67-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2616-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2616-62-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2616-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2616-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2616-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2616-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2616-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2616-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2616-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2616-48-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2656-41-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2656-40-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2656-63-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2656-31-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/3032-0-0x0000000074C01000-0x0000000074C02000-memory.dmp

Filesize
4KB

Download
memory/3032-12-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/3032-8-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/3032-11-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/3032-30-0x0000000074C00000-0x00000000751AB000-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