remcos | c1be767404a3d71717a54b01ebfa91ebff578dad8dd518a1a49012bcf012738e

Resubmissions

27/07/2024, 17:08

240727-vnrrpszapr 10

24/07/2024, 13:55

240724-q8e67aygrr 10

Analysis

max time kernel
139s
max time network
150s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
24/07/2024, 13:55

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General

Target

317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe
Size

2.0MB
MD5

8f424619f95580c7ce64bf3663046f60
SHA1

83b585a40f4a8a9c421647cf88716b6200750a3b
SHA256

317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985
SHA512

e5c92c2bf2d874c10686e5d6a87fd30bfef9b8b87cc3571774fbc72ae8e7111626f675ac356df19377d50a670c8596882da2a6cc4ded40525dbc00907cab1f13
SSDEEP

24576:WD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4+cZkL:Wp7E+QrFUBgq29S

Score

10^/10

remcos host credential_access discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

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
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
2724	sbietrcl.exe
2852	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.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-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2724 set thread context of 2852	2724	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	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.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
1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe
1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe
1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe
1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe
1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe
1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe
2724	sbietrcl.exe
2724	sbietrcl.exe
2724	sbietrcl.exe
2724	sbietrcl.exe
2724	sbietrcl.exe
2724	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe
Token: SeDebugPrivilege	2724	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2852	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1828 wrote to memory of 2724	1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe	31
PID 1828 wrote to memory of 2724	1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe	31
PID 1828 wrote to memory of 2724	1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe	31
PID 1828 wrote to memory of 2724	1828	317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe	31
PID 2724 wrote to memory of 2852	2724	sbietrcl.exe	32
PID 2724 wrote to memory of 2852	2724	sbietrcl.exe	32
PID 2724 wrote to memory of 2852	2724	sbietrcl.exe	32
PID 2724 wrote to memory of 2852	2724	sbietrcl.exe	32
PID 2724 wrote to memory of 2852	2724	sbietrcl.exe	32
PID 2724 wrote to memory of 2852	2724	sbietrcl.exe	32
PID 2724 wrote to memory of 2852	2724	sbietrcl.exe	32
PID 2724 wrote to memory of 2852	2724	sbietrcl.exe	32
PID 2724 wrote to memory of 2852	2724	sbietrcl.exe	32
PID 2724 wrote to memory of 2852	2724	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.exe
"C:\Users\Admin\AppData\Local\Temp\317ce86a4e5783cbfa78be1ce5950fe287d810f34d834d859df0bf7496625985.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:1828
- 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:2724
- - 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:2852

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabE003.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
0fc999f80e898e1c2f6075d310e756ee

SHA1
bf870f8639415ee4e840a06590211cc3dd55e40b

SHA256
70f32562938fa29b119ac11d7fd681176dd14a9427a68bf74bffdca706f3a34e

SHA512
605424c838f0599aaf04d6be00e47f6368b36716d999307373cb8199ce63fa816b49be05a67a089bb7ee9eae3c9f6f283a3ae0214228f3244b113f64fae78b05

Download Submit
memory/1828-1-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download
memory/1828-9-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download
memory/1828-10-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download
memory/1828-28-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download
memory/1828-0-0x00000000747F1000-0x00000000747F2000-memory.dmp

Filesize
4KB

Download
memory/2724-60-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download
memory/2724-29-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download
memory/2724-37-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download
memory/2724-38-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download
memory/2852-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2852-51-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2852-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2852-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2852-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2852-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2852-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2852-49-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2852-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2852-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2852-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2852-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download