remcos | 01ffe9d6f323a1dafd7dbe75338596cb03cdbe970cdc964543ae03006c1ece85

Analysis

max time kernel
38s
max time network
41s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 19:00

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General

Target

1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
Size

1.8MB
MD5

793d4f49460d39ce07b9b1f4fbae913f
SHA1

0f673b4d57a55fe5c7ad9f575cb04e31a1fd2ac7
SHA256

1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32
SHA512

7dc26a5651a95fc2c23174d6049bdb24e456f53fb08654ddf4984ee26d461b3c4186b70e3eb700088e9098a2d1449c77e5023bb872b933ed50cab7ed1e48ab71
SSDEEP

24576:PD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6J:PF+QrFUBgq25eKu6J

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Host

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
2148	sbietrcl.exe
2936	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe

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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2148 set thread context of 2936	2148	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 2 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	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
2148	sbietrcl.exe
2148	sbietrcl.exe
2148	sbietrcl.exe
2148	sbietrcl.exe
2148	sbietrcl.exe
2148	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
Token: SeDebugPrivilege	2148	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2148	2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe	31
PID 2516 wrote to memory of 2148	2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe	31
PID 2516 wrote to memory of 2148	2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe	31
PID 2516 wrote to memory of 2148	2516	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe	31
PID 2148 wrote to memory of 2936	2148	sbietrcl.exe	32
PID 2148 wrote to memory of 2936	2148	sbietrcl.exe	32
PID 2148 wrote to memory of 2936	2148	sbietrcl.exe	32
PID 2148 wrote to memory of 2936	2148	sbietrcl.exe	32
PID 2148 wrote to memory of 2936	2148	sbietrcl.exe	32
PID 2148 wrote to memory of 2936	2148	sbietrcl.exe	32
PID 2148 wrote to memory of 2936	2148	sbietrcl.exe	32
PID 2148 wrote to memory of 2936	2148	sbietrcl.exe	32
PID 2148 wrote to memory of 2936	2148	sbietrcl.exe	32
PID 2148 wrote to memory of 2936	2148	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
"C:\Users\Admin\AppData\Local\Temp\1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.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:2516
- 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:2148
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    PID:2936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabDCF7.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.8MB

MD5
539c8bec89a87e1b87136e788b16768c

SHA1
246f947fbb7c55956718588876263f8ba5d1430c

SHA256
c4cd7bfc2acfcf6361ab3dfcbb808c26d170f3bbba9baf8ac1dbb15126079860

SHA512
0ec153949868bb57cbebd45629b6d2ff76651fbff5be5aba3ddb77d672f9d16d4a50edb1de76ec16a5b349c97723b240b1fbfdddf7184394de45a1c888605f6b

Download Submit
memory/2148-55-0x0000000074720000-0x0000000074CCB000-memory.dmp

Filesize
5.7MB

Download
memory/2148-40-0x0000000074720000-0x0000000074CCB000-memory.dmp

Filesize
5.7MB

Download
memory/2148-39-0x0000000074720000-0x0000000074CCB000-memory.dmp

Filesize
5.7MB

Download
memory/2148-31-0x0000000074720000-0x0000000074CCB000-memory.dmp

Filesize
5.7MB

Download
memory/2516-23-0x0000000074720000-0x0000000074CCB000-memory.dmp

Filesize
5.7MB

Download
memory/2516-0-0x0000000074721000-0x0000000074722000-memory.dmp

Filesize
4KB

Download
memory/2516-30-0x0000000074720000-0x0000000074CCB000-memory.dmp

Filesize
5.7MB

Download
memory/2516-11-0x0000000074720000-0x0000000074CCB000-memory.dmp

Filesize
5.7MB

Download
memory/2516-10-0x0000000074720000-0x0000000074CCB000-memory.dmp

Filesize
5.7MB

Download
memory/2516-2-0x0000000074720000-0x0000000074CCB000-memory.dmp

Filesize
5.7MB

Download
memory/2516-1-0x0000000074720000-0x0000000074CCB000-memory.dmp

Filesize
5.7MB

Download
memory/2936-52-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/2936-49-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2936-47-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/2936-45-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/2936-43-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/2936-41-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/2936-42-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download