remcos | 5656064ae4d3c302be4f376131bce57fa83ba30e94c329f33adb91836d7f4bf8

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:25

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General

Target

34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
Size

910KB
MD5

78b459487d77b2af6ddfcc1e82e86832
SHA1

4bd3949d2f1704e5d50befa9998631e59a29fb4e
SHA256

34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7
SHA512

0b719d230d6e2dc90723f7cfcb54e934e8e61d28dc7e432053a881fd432c8a9dad4b3ac3949c984649b20a6ffa5db32a15d56d04da5f51638ade64a653a1a863
SSDEEP

12288:7p+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRz9Ma:7pugRNJI1D39dlfGQrFUx9Ma

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
2824	sbietrcl.exe
752	sbietrcl.exe

Loads dropped DLL 2 IoCs

pid	Process
1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
2824	sbietrcl.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-1-5-21-677481364-2238709445-1347953534-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2824 set thread context of 752	2824	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	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
2824	sbietrcl.exe
2824	sbietrcl.exe
2824	sbietrcl.exe
2824	sbietrcl.exe
2824	sbietrcl.exe
2824	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
Token: SeDebugPrivilege	2824	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 2824	1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe	31
PID 1964 wrote to memory of 2824	1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe	31
PID 1964 wrote to memory of 2824	1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe	31
PID 1964 wrote to memory of 2824	1964	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe	31
PID 2824 wrote to memory of 752	2824	sbietrcl.exe	32
PID 2824 wrote to memory of 752	2824	sbietrcl.exe	32
PID 2824 wrote to memory of 752	2824	sbietrcl.exe	32
PID 2824 wrote to memory of 752	2824	sbietrcl.exe	32
PID 2824 wrote to memory of 752	2824	sbietrcl.exe	32
PID 2824 wrote to memory of 752	2824	sbietrcl.exe	32
PID 2824 wrote to memory of 752	2824	sbietrcl.exe	32
PID 2824 wrote to memory of 752	2824	sbietrcl.exe	32
PID 2824 wrote to memory of 752	2824	sbietrcl.exe	32
PID 2824 wrote to memory of 752	2824	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
"C:\Users\Admin\AppData\Local\Temp\34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.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:1964
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2824
- - 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:752

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabE189.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
915KB

MD5
112fc403e8c71d03b4fde2862f33b213

SHA1
d9d70e481fdfcb469e3f8f4d2fdc5ae294035a0c

SHA256
58653e75e33e7ea18b0df0940a170eb9dd2402e85e44567974cb84a75186ed5b

SHA512
980e8bd3a3cb12b7666b128e5bd5bf9d1afe152170b1c5219b76ef0ff88da4bba8558d0fa7aaecb5d5ada1da9c29ac59efca18e1804a023de98a420ea1d5d61c

Download Submit
memory/752-43-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/752-52-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/752-45-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/752-47-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/752-49-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/752-53-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/752-57-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/1964-23-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/1964-30-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/1964-0-0x0000000074F61000-0x0000000074F62000-memory.dmp

Filesize
4KB

Download
memory/1964-11-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/1964-10-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/1964-2-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/1964-1-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/2824-39-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/2824-40-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/2824-41-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/2824-31-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/2824-60-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download