remcos | 3d0ac904350f77a399f1ec7f6779c294c8be2c7f54eb7343c21f6df264edd7a2

General

Target

bbb638c562b3df98a2b1b636e82cfdd0N.exe
Size

2.0MB
MD5

bbb638c562b3df98a2b1b636e82cfdd0
SHA1

90778955c9cdf9977de455ea28979ca5095d242b
SHA256

3d0ac904350f77a399f1ec7f6779c294c8be2c7f54eb7343c21f6df264edd7a2
SHA512

a357391e15404d444c6f37826cc967cf89e652e890a69cc0284a4972847f2be42d718ac865e34c5475a3db3facdfc91379c98c9a1d836241e5658ac72b6b5acb
SSDEEP

24576:/D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j73Anet9/wL:/p7E+QrFUBgq2D

Score

10^/10

remcos host credential_access discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Executes dropped EXE 2 IoCs

pid	Process
2856	sbietrcl.exe
2972	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

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-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	bbb638c562b3df98a2b1b636e82cfdd0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2856 set thread context of 2972	2856	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 3 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	bbb638c562b3df98a2b1b636e82cfdd0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe
2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe
2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe
2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe
2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe
2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe
2856	sbietrcl.exe
2856	sbietrcl.exe
2856	sbietrcl.exe
2856	sbietrcl.exe
2856	sbietrcl.exe
2856	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe
Token: SeDebugPrivilege	2856	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2972	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 2856	2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe	31
PID 2420 wrote to memory of 2856	2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe	31
PID 2420 wrote to memory of 2856	2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe	31
PID 2420 wrote to memory of 2856	2420	bbb638c562b3df98a2b1b636e82cfdd0N.exe	31
PID 2856 wrote to memory of 2972	2856	sbietrcl.exe	32
PID 2856 wrote to memory of 2972	2856	sbietrcl.exe	32
PID 2856 wrote to memory of 2972	2856	sbietrcl.exe	32
PID 2856 wrote to memory of 2972	2856	sbietrcl.exe	32
PID 2856 wrote to memory of 2972	2856	sbietrcl.exe	32
PID 2856 wrote to memory of 2972	2856	sbietrcl.exe	32
PID 2856 wrote to memory of 2972	2856	sbietrcl.exe	32
PID 2856 wrote to memory of 2972	2856	sbietrcl.exe	32
PID 2856 wrote to memory of 2972	2856	sbietrcl.exe	32
PID 2856 wrote to memory of 2972	2856	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\bbb638c562b3df98a2b1b636e82cfdd0N.exe
"C:\Users\Admin\AppData\Local\Temp\bbb638c562b3df98a2b1b636e82cfdd0N.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:2420
- 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:2856
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2972

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabD105.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
2.0MB

MD5
eb686572d4089b2f0e0944a0762bd2c3

SHA1
456b285e16df3aba771bff42421eaec896b08e61

SHA256
7aceb11a7704e0c44aef1960c7ef89d88e17c1bcf6f2bad907f0ae48c1f645cc

SHA512
c973529134a743d38cb07c00f6b0c7bf05402abb793aa30a4b34568da37e0a82839bf8aa088bdebfc7f5ee5fe735b1901a174962c3382e365639cae3a0355bf4

Download Submit
memory/2420-0-0x0000000074AC1000-0x0000000074AC2000-memory.dmp

Filesize
4KB

Download
memory/2420-1-0x0000000074AC0000-0x000000007506B000-memory.dmp

Filesize
5.7MB

Download
memory/2420-9-0x0000000074AC0000-0x000000007506B000-memory.dmp

Filesize
5.7MB

Download
memory/2420-10-0x0000000074AC0000-0x000000007506B000-memory.dmp

Filesize
5.7MB

Download
memory/2420-28-0x0000000074AC0000-0x000000007506B000-memory.dmp

Filesize
5.7MB

Download
memory/2856-29-0x0000000074AC0000-0x000000007506B000-memory.dmp

Filesize
5.7MB

Download
memory/2856-37-0x0000000074AC0000-0x000000007506B000-memory.dmp

Filesize
5.7MB

Download
memory/2856-38-0x0000000074AC0000-0x000000007506B000-memory.dmp

Filesize
5.7MB

Download
memory/2856-55-0x0000000074AC0000-0x000000007506B000-memory.dmp

Filesize
5.7MB

Download
memory/2972-51-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2972-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2972-49-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2972-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2972-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2972-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2972-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2972-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2972-60-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2972-56-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2972-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2972-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2972-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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