remcos | d5ecd3f6efc58f4336dbf0682bf053114e84f95d4b37927eba9643b91e8f6789

General

Target

a7fab95ea927cb0689b8d40e1bb63790N.exe
Size

2.2MB
MD5

a7fab95ea927cb0689b8d40e1bb63790
SHA1

0c76883e998efb9aca8604a00842d5a64960013c
SHA256

d5ecd3f6efc58f4336dbf0682bf053114e84f95d4b37927eba9643b91e8f6789
SHA512

c2d2995622352b6ffee6671de8a92138164e6e4c8c3b4d9680289a41b680fc1e4ff56b26b5ddefc758ca6d8f35708d334f524318ccb5c91dfff4791be30ae098
SSDEEP

24576:sD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF49rOoBlZ:sp7E+QrFUBgq2f3Z

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
2900	sbietrcl.exe
2996	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2408	a7fab95ea927cb0689b8d40e1bb63790N.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	a7fab95ea927cb0689b8d40e1bb63790N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2900 set thread context of 2996	2900	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	a7fab95ea927cb0689b8d40e1bb63790N.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
2408	a7fab95ea927cb0689b8d40e1bb63790N.exe
2408	a7fab95ea927cb0689b8d40e1bb63790N.exe
2408	a7fab95ea927cb0689b8d40e1bb63790N.exe
2408	a7fab95ea927cb0689b8d40e1bb63790N.exe
2408	a7fab95ea927cb0689b8d40e1bb63790N.exe
2408	a7fab95ea927cb0689b8d40e1bb63790N.exe
2900	sbietrcl.exe
2900	sbietrcl.exe
2900	sbietrcl.exe
2900	sbietrcl.exe
2900	sbietrcl.exe
2900	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2408	a7fab95ea927cb0689b8d40e1bb63790N.exe
Token: SeDebugPrivilege	2900	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2996	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2900	2408	a7fab95ea927cb0689b8d40e1bb63790N.exe	31
PID 2408 wrote to memory of 2900	2408	a7fab95ea927cb0689b8d40e1bb63790N.exe	31
PID 2408 wrote to memory of 2900	2408	a7fab95ea927cb0689b8d40e1bb63790N.exe	31
PID 2408 wrote to memory of 2900	2408	a7fab95ea927cb0689b8d40e1bb63790N.exe	31
PID 2900 wrote to memory of 2996	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2996	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2996	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2996	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2996	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2996	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2996	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2996	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2996	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2996	2900	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\a7fab95ea927cb0689b8d40e1bb63790N.exe
"C:\Users\Admin\AppData\Local\Temp\a7fab95ea927cb0689b8d40e1bb63790N.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:2408
- 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:2900
- - 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:2996

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\CabEC04.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
2.2MB

MD5
0113ef6894b7a835da84c5182f6a197c

SHA1
b4c9783a6a42dc0f6f44eb155c8ad3c34222a505

SHA256
068cb67288290bdf6eb348b2060cbe778b83f39192c8f2b9e38f865df5797075

SHA512
7b95b97a121f3557f23f99322f370d20d60ee55f7f2181e5efa7d18efdc4f2e20c9aa09c7d8b57b2781bb46669d0d6549a001e64e54353a175654cfebb6ebf21

Download Submit
memory/2408-2-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-10-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-11-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-23-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-30-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-1-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-0-0x0000000074EE1000-0x0000000074EE2000-memory.dmp

Filesize
4KB

Download
memory/2900-53-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2900-31-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2900-39-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2900-40-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2996-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2996-48-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2996-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2996-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2996-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2996-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2996-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2996-55-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2996-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2996-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2996-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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