remcos | 20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891

General

Target

20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
Size

1.4MB
MD5

b4d397caac0e0dec84407be95e107290
SHA1

abf8c56d5027eb924806157fd747682e717aba3a
SHA256

20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891
SHA512

6d044830436b82ec05db6cdb5e54c64ec77d6bd531334610ecb28541e05cf5ce8e8aca1cb992a2d8864a0270ff327566a3154eac0f132c8157c9982bd80ed152
SSDEEP

24576:SD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjo/e3j:Sp7E+QrFUBgq2/3j

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

Executes dropped EXE 2 IoCs

pid	Process
264	sbietrcl.exe
2748	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 264 set thread context of 2748	264	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	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
264	sbietrcl.exe
264	sbietrcl.exe
264	sbietrcl.exe
264	sbietrcl.exe
264	sbietrcl.exe
264	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
Token: SeDebugPrivilege	264	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2592 wrote to memory of 264	2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe	31
PID 2592 wrote to memory of 264	2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe	31
PID 2592 wrote to memory of 264	2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe	31
PID 2592 wrote to memory of 264	2592	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe	31
PID 264 wrote to memory of 2748	264	sbietrcl.exe	32
PID 264 wrote to memory of 2748	264	sbietrcl.exe	32
PID 264 wrote to memory of 2748	264	sbietrcl.exe	32
PID 264 wrote to memory of 2748	264	sbietrcl.exe	32
PID 264 wrote to memory of 2748	264	sbietrcl.exe	32
PID 264 wrote to memory of 2748	264	sbietrcl.exe	32
PID 264 wrote to memory of 2748	264	sbietrcl.exe	32
PID 264 wrote to memory of 2748	264	sbietrcl.exe	32
PID 264 wrote to memory of 2748	264	sbietrcl.exe	32
PID 264 wrote to memory of 2748	264	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
"C:\Users\Admin\AppData\Local\Temp\20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.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:2592
- 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:264
- - 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:2748

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\CabDF96.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
eb1df8bbea713f8b6953d2d4c7dad0ae

SHA1
3e747401c001338b89fa2c56c74109d4197c187b

SHA256
cb934d3853cf00f39eb79d2986fa4f0f93e65216c0a8f9950fde17c90972249f

SHA512
0c2b70dad156db989373fb3b75174fafcec6c4c7538e8a4d086748670399e228c48af4ef65dfb6a8e20420cd19b6c0b6351dcf2093ab6e349acb06e345906f60

Download Submit
memory/264-31-0x0000000074E70000-0x000000007541B000-memory.dmp

Filesize
5.7MB

Download
memory/264-59-0x0000000074E70000-0x000000007541B000-memory.dmp

Filesize
5.7MB

Download
memory/264-40-0x0000000074E70000-0x000000007541B000-memory.dmp

Filesize
5.7MB

Download
memory/264-41-0x0000000074E70000-0x000000007541B000-memory.dmp

Filesize
5.7MB

Download
memory/264-32-0x0000000074E70000-0x000000007541B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-23-0x0000000074E70000-0x000000007541B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-29-0x0000000074E70000-0x000000007541B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-0-0x0000000074E71000-0x0000000074E72000-memory.dmp

Filesize
4KB

Download
memory/2592-11-0x0000000074E70000-0x000000007541B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-10-0x0000000074E70000-0x000000007541B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-2-0x0000000074E70000-0x000000007541B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-1-0x0000000074E70000-0x000000007541B000-memory.dmp

Filesize
5.7MB

Download
memory/2748-50-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2748-56-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2748-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2748-48-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2748-47-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2748-44-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2748-42-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads