remcos | d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2

General

Target

d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe
Size

1.4MB
MD5

c8a1a34d11e4eda342918ebcde115dc1
SHA1

329810357b607684c49821fa13ddf6af8cfa0375
SHA256

d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2
SHA512

cd0032f6ddf20ad4dbb94dbc67fb154e8874d322888cb34d19b2a48dd11aa03ab881a5a77251b713a05ef8db8891fa7f6e9e64ec80a8205fa90bb357bd50f1f7
SSDEEP

24576:4D39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJq:4F+QrFUBgq25eKk

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

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
2188	sbietrcl.exe
2812	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2188 set thread context of 2812	2188	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 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	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe
1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe
1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe
1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe
1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe
1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe
2188	sbietrcl.exe
2188	sbietrcl.exe
2188	sbietrcl.exe
2188	sbietrcl.exe
2188	sbietrcl.exe
2188	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe
Token: SeDebugPrivilege	2188	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 2188	1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe	30
PID 1724 wrote to memory of 2188	1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe	30
PID 1724 wrote to memory of 2188	1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe	30
PID 1724 wrote to memory of 2188	1724	d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe	30
PID 2188 wrote to memory of 2812	2188	sbietrcl.exe	31
PID 2188 wrote to memory of 2812	2188	sbietrcl.exe	31
PID 2188 wrote to memory of 2812	2188	sbietrcl.exe	31
PID 2188 wrote to memory of 2812	2188	sbietrcl.exe	31
PID 2188 wrote to memory of 2812	2188	sbietrcl.exe	31
PID 2188 wrote to memory of 2812	2188	sbietrcl.exe	31
PID 2188 wrote to memory of 2812	2188	sbietrcl.exe	31
PID 2188 wrote to memory of 2812	2188	sbietrcl.exe	31
PID 2188 wrote to memory of 2812	2188	sbietrcl.exe	31
PID 2188 wrote to memory of 2812	2188	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.exe
"C:\Users\Admin\AppData\Local\Temp\d9b0cdd1131c5686c45b57bd4b9663a5089ae14df0d3e967f9df4a76278761e2.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:1724
- 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:2188
- - 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:2812

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

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabBD85.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.4MB

MD5
a96385fd9e0f93fd0724e2e5e06dedd4

SHA1
99a7138d5929f4fb6753ac7a6741a7adaae7b822

SHA256
26cd869e07e874184a29de8523a3cfb6cf50ac5ac79346286cf7094aa59a6565

SHA512
538e4ba33e0b275e9cd2a0cd6d448dcc2da01998b0cfe55a12b96d508d3321231cafa52fa29fa3e3e7eb359a32741a274123cf941821f321a5fd3df43e19204d

Download Submit
memory/1724-11-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/1724-10-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/1724-9-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/1724-2-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/1724-0-0x0000000074CC1000-0x0000000074CC2000-memory.dmp

Filesize
4KB

Download
memory/1724-23-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/1724-29-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2188-39-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2188-40-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2188-38-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2188-41-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2188-58-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2812-44-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2812-42-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2812-55-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2812-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2812-50-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2812-48-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2812-46-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads