remcos | e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851

General

Target

e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe
Size

1.1MB
MD5

73c43f022ab0f2c487b181d2f663da1d
SHA1

717f9dc672446cab2a0bbfc3c776304370ec9d23
SHA256

e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851
SHA512

9894abb1aeb900ded96cb1dbf8c75d2160e1ac8a5787525c5adb4f8c39feca3897ea026752a6028e5d1a62ca3c7acae6767532eb0305b1ec812915c6d13c68ff
SSDEEP

12288:Gp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRzwAY3Ak83R1:GpugRNJI1D39dlfGQrFUxwAeAk83R1

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

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Executes dropped EXE 2 IoCs

pid	Process
3024	sbietrcl.exe
1180	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3024 set thread context of 1180	3024	sbietrcl.exe	34

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	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe
2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe
2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe
2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe
2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe
2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe
3024	sbietrcl.exe
3024	sbietrcl.exe
3024	sbietrcl.exe
3024	sbietrcl.exe
3024	sbietrcl.exe
3024	sbietrcl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2900	explorer.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeDebugPrivilege	3024	sbietrcl.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe

Suspicious use of FindShellTrayWindow 25 IoCs

pid	Process
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe

Suspicious use of SendNotifyMessage 14 IoCs

pid	Process
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 3024	2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe	32
PID 2516 wrote to memory of 3024	2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe	32
PID 2516 wrote to memory of 3024	2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe	32
PID 2516 wrote to memory of 3024	2516	e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe	32
PID 3024 wrote to memory of 1180	3024	sbietrcl.exe	34
PID 3024 wrote to memory of 1180	3024	sbietrcl.exe	34
PID 3024 wrote to memory of 1180	3024	sbietrcl.exe	34
PID 3024 wrote to memory of 1180	3024	sbietrcl.exe	34
PID 3024 wrote to memory of 1180	3024	sbietrcl.exe	34
PID 3024 wrote to memory of 1180	3024	sbietrcl.exe	34
PID 3024 wrote to memory of 1180	3024	sbietrcl.exe	34
PID 3024 wrote to memory of 1180	3024	sbietrcl.exe	34
PID 3024 wrote to memory of 1180	3024	sbietrcl.exe	34
PID 3024 wrote to memory of 1180	3024	sbietrcl.exe	34

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.exe
"C:\Users\Admin\AppData\Local\Temp\e8150f2ffbd67dbb394b4d6889693cfd50b5bfaf74825f814c3b46832d6d8851.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:3024
- - 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:1180

C:\Windows\explorer.exe
explorer.exe
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

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\CabE965.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.1MB

MD5
e013019caa9032816681a5ab9501b8b8

SHA1
4113921d730836f0790a7eb435841ae1affcf581

SHA256
cfad35d2c37417d940b5d6808eaa5db9edb635b05083bb94895e2ac4bf7c7a12

SHA512
39bd2e8d4cc316cdb1798da5d8fb31e04a61c42a183f48d7689af4b96fcd2c94ebed780f0d85eb8b94a299b0fcf21e78ab4635ca498c8f59323a32a6f8e8a37d

Download Submit
memory/1180-40-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/1180-38-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/1180-42-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/1180-44-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/1180-46-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/1180-48-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1180-50-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/2516-11-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2516-30-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2516-23-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2516-0-0x0000000074EE1000-0x0000000074EE2000-memory.dmp

Filesize
4KB

Download
memory/2516-10-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2516-9-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2516-1-0x0000000074EE0000-0x000000007548B000-memory.dmp

Filesize
5.7MB

Download
memory/2900-56-0x00000000025C0000-0x00000000025D0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads