remcos | 198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31

General

Target

198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
Size

1011KB
MD5

fb0b57e2384fc19739bb45994ce5463a
SHA1

79906a1307e8ed7543541f68f10a944bc7d9629c
SHA256

198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31
SHA512

db0ecf99a2ef138ebc3c36eec92ea23feb44c82bc3640a1517b55742e33ec1ee6332d5bd818a01bbd7e44c54cf9e752cd5b40db5a8ced40bab02fff17ee3fd4e
SSDEEP

12288:Up+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRzwAY3AzCk:UpugRNJI1D39dlfGQrFUxwAeAzCk

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
576	sbietrcl.exe
2668	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 576 set thread context of 2668	576	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	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
576	sbietrcl.exe
576	sbietrcl.exe
576	sbietrcl.exe
576	sbietrcl.exe
576	sbietrcl.exe
576	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
Token: SeDebugPrivilege	576	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 576	2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe	30
PID 2280 wrote to memory of 576	2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe	30
PID 2280 wrote to memory of 576	2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe	30
PID 2280 wrote to memory of 576	2280	198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe	30
PID 576 wrote to memory of 2668	576	sbietrcl.exe	32
PID 576 wrote to memory of 2668	576	sbietrcl.exe	32
PID 576 wrote to memory of 2668	576	sbietrcl.exe	32
PID 576 wrote to memory of 2668	576	sbietrcl.exe	32
PID 576 wrote to memory of 2668	576	sbietrcl.exe	32
PID 576 wrote to memory of 2668	576	sbietrcl.exe	32
PID 576 wrote to memory of 2668	576	sbietrcl.exe	32
PID 576 wrote to memory of 2668	576	sbietrcl.exe	32
PID 576 wrote to memory of 2668	576	sbietrcl.exe	32
PID 576 wrote to memory of 2668	576	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.exe
"C:\Users\Admin\AppData\Local\Temp\198b63cb0b21f5dcbde993a904d483d2544c314a9b9fe4b627a8301c13fbae31.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:2280
- 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:576
- - 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:2668

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\CabC9F3.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1017KB

MD5
8dc9626aeb9377044630d6faa8c36354

SHA1
563ff3019b891e4a8bab24384740099ee9f87f08

SHA256
7437820c6311c586b1f94b649b226b4ad3c65a1aa357bea1bc7b04b0ffe3bd60

SHA512
53f00e9cfebf1b0133da87cdf98921c18ef29573e3c4e0f4c1f8ef57855b8c611c66090ea0b0e7301e79e5cb24668133d21b1c1c2f1e9e17f59e5b5388f17272

Download Submit
memory/576-57-0x0000000074510000-0x0000000074ABB000-memory.dmp

Filesize
5.7MB

Download
memory/576-40-0x0000000074510000-0x0000000074ABB000-memory.dmp

Filesize
5.7MB

Download
memory/576-39-0x0000000074510000-0x0000000074ABB000-memory.dmp

Filesize
5.7MB

Download
memory/576-31-0x0000000074510000-0x0000000074ABB000-memory.dmp

Filesize
5.7MB

Download
memory/2280-23-0x0000000074510000-0x0000000074ABB000-memory.dmp

Filesize
5.7MB

Download
memory/2280-30-0x0000000074510000-0x0000000074ABB000-memory.dmp

Filesize
5.7MB

Download
memory/2280-0-0x0000000074511000-0x0000000074512000-memory.dmp

Filesize
4KB

Download
memory/2280-11-0x0000000074510000-0x0000000074ABB000-memory.dmp

Filesize
5.7MB

Download
memory/2280-10-0x0000000074510000-0x0000000074ABB000-memory.dmp

Filesize
5.7MB

Download
memory/2280-1-0x0000000074510000-0x0000000074ABB000-memory.dmp

Filesize
5.7MB

Download
memory/2280-2-0x0000000074510000-0x0000000074ABB000-memory.dmp

Filesize
5.7MB

Download
memory/2668-45-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2668-54-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2668-51-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2668-49-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2668-47-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2668-43-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2668-41-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads