remcos | b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edc

General

Target

b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe
Size

2.2MB
MD5

a5772d2e4b88816004fd474cae1424e0
SHA1

1dca21ff19ce0b88347cb62bd8f6b3851fd47a62
SHA256

b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edc
SHA512

e96769e11290a709a77f8eb183f16bb06f37c68bc255ef2bc2a5d56e63cde4aaf35918c1d41f87cc075e840650b3199cb49a3ba473aedadd218df6ae3211bf89
SSDEEP

24576:XD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJ7:Xp7E+QrFUBgq2Snx

Score

10^/10

remcos host 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

Executes dropped EXE 2 IoCs

pid	Process
1748	sbietrcl.exe
2628	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1748 set thread context of 2628	1748	sbietrcl.exe	30

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	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe
2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe
2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe
2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe
2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe
2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe
1748	sbietrcl.exe
1748	sbietrcl.exe
1748	sbietrcl.exe
1748	sbietrcl.exe
1748	sbietrcl.exe
1748	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe
Token: SeDebugPrivilege	1748	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2628	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 1748	2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe	29
PID 2904 wrote to memory of 1748	2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe	29
PID 2904 wrote to memory of 1748	2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe	29
PID 2904 wrote to memory of 1748	2904	b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe	29
PID 1748 wrote to memory of 2628	1748	sbietrcl.exe	30
PID 1748 wrote to memory of 2628	1748	sbietrcl.exe	30
PID 1748 wrote to memory of 2628	1748	sbietrcl.exe	30
PID 1748 wrote to memory of 2628	1748	sbietrcl.exe	30
PID 1748 wrote to memory of 2628	1748	sbietrcl.exe	30
PID 1748 wrote to memory of 2628	1748	sbietrcl.exe	30
PID 1748 wrote to memory of 2628	1748	sbietrcl.exe	30
PID 1748 wrote to memory of 2628	1748	sbietrcl.exe	30
PID 1748 wrote to memory of 2628	1748	sbietrcl.exe	30
PID 1748 wrote to memory of 2628	1748	sbietrcl.exe	30

C:\Users\Admin\AppData\Local\Temp\b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.exe
"C:\Users\Admin\AppData\Local\Temp\b6939e8e61e85a961ffe02f0c9104e8b109e9a05746123a2c8d2df0755d91edcN.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:2904
- 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:1748
- - 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:2628

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\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
8754f6c1d421703de7bc9d59c0609087

SHA1
07f529a3c2c8dd19b0fe9f2b49ae7ad1b77eeae8

SHA256
7841721e2cf3917fd128c66397934de05a8f657a3c625c9c405f32374e7143dd

SHA512
a63bf4d1ca7883a89ea429ea8f58bb7970365efc2b578efa4728e5e50d3078be1b8ce78da2eef7cc49ed2bf3c73ccc703a6c7d6e6f10324516d4f7065781c842

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabAD4F.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
2.2MB

MD5
72ea5eafcd9b0b5388db28021cf25c17

SHA1
ca1eb943adb878cdbab8080710fc58b7eb346a0d

SHA256
c737b28aea326666c498e2ee08badc433b8eff7ec177ba7511006cdd72987f0e

SHA512
1f686a10beefbb77089bd354f5bd71a282d84521d2a6a7c35f1000783df9f0b8c3e0bb28d7e8082ed83be9d297556e0ad4292a2439a1f4812184e4feccd477c2

Download Submit
memory/1748-34-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download
memory/1748-66-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download
memory/1748-44-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download
memory/1748-43-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download
memory/1748-33-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download
memory/2628-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-52-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-69-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-65-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-51-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-56-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-54-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-60-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2904-2-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download
memory/2904-0-0x0000000074861000-0x0000000074862000-memory.dmp

Filesize
4KB

Download
memory/2904-32-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download
memory/2904-12-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download
memory/2904-13-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download
memory/2904-1-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download
memory/2904-25-0x0000000074860000-0x0000000074E0B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads