remcos | fdd537629a777eb117900f86855e71df1f0bb5b53349d682030787bef3d5dd3b

General

Target

e0adf621d598065f9833243390df1aa0N.exe
Size

2.1MB
MD5

e0adf621d598065f9833243390df1aa0
SHA1

b546d2b828bc1291c53318d68c34de3f149b25a5
SHA256

fdd537629a777eb117900f86855e71df1f0bb5b53349d682030787bef3d5dd3b
SHA512

0f2726103b6b0cee83107253508e5871a2a47ae4d23420962e034387fd20dbf172fe51e7fdf591cbd7298c907c92a51f23ecacc2b6662f83484ec9333bfc8890
SSDEEP

24576:CD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJK:Cp7E+QrFUBgq2Sns

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
2848	sbietrcl.exe
2968	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2196	e0adf621d598065f9833243390df1aa0N.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	e0adf621d598065f9833243390df1aa0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2848 set thread context of 2968	2848	sbietrcl.exe	31

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	e0adf621d598065f9833243390df1aa0N.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
2196	e0adf621d598065f9833243390df1aa0N.exe
2196	e0adf621d598065f9833243390df1aa0N.exe
2196	e0adf621d598065f9833243390df1aa0N.exe
2196	e0adf621d598065f9833243390df1aa0N.exe
2196	e0adf621d598065f9833243390df1aa0N.exe
2196	e0adf621d598065f9833243390df1aa0N.exe
2848	sbietrcl.exe
2848	sbietrcl.exe
2848	sbietrcl.exe
2848	sbietrcl.exe
2848	sbietrcl.exe
2848	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2196	e0adf621d598065f9833243390df1aa0N.exe
Token: SeDebugPrivilege	2848	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2968	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 2848	2196	e0adf621d598065f9833243390df1aa0N.exe	30
PID 2196 wrote to memory of 2848	2196	e0adf621d598065f9833243390df1aa0N.exe	30
PID 2196 wrote to memory of 2848	2196	e0adf621d598065f9833243390df1aa0N.exe	30
PID 2196 wrote to memory of 2848	2196	e0adf621d598065f9833243390df1aa0N.exe	30
PID 2848 wrote to memory of 2968	2848	sbietrcl.exe	31
PID 2848 wrote to memory of 2968	2848	sbietrcl.exe	31
PID 2848 wrote to memory of 2968	2848	sbietrcl.exe	31
PID 2848 wrote to memory of 2968	2848	sbietrcl.exe	31
PID 2848 wrote to memory of 2968	2848	sbietrcl.exe	31
PID 2848 wrote to memory of 2968	2848	sbietrcl.exe	31
PID 2848 wrote to memory of 2968	2848	sbietrcl.exe	31
PID 2848 wrote to memory of 2968	2848	sbietrcl.exe	31
PID 2848 wrote to memory of 2968	2848	sbietrcl.exe	31
PID 2848 wrote to memory of 2968	2848	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\e0adf621d598065f9833243390df1aa0N.exe
"C:\Users\Admin\AppData\Local\Temp\e0adf621d598065f9833243390df1aa0N.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:2196
- 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:2848
- - 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:2968

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
2530e8c033be7fa0e141caab721fae32

SHA1
d612188b36c8a30a0d331d554a87f2d269b83627

SHA256
b62be0aea8784db79936a59ac8f22cc89eae94c02e130d7e85e08ad286ff042b

SHA512
f62b25dd3e3a6e25fc0b9108e07d31297c70d9b14f43b48b8238e08ce87d78daa4e34f3a631064ae9121fbea5578ba06416e6658d48464fe88cd65f3cdd16fb5

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab55DD.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
2.1MB

MD5
f79c6021de43467e33936b91e9653916

SHA1
8e172f10d8639f41e518658a6457982cc755da70

SHA256
7c6036aa39e1ec2f0c9111346892d185b5c0cb81cc5144aead26f81eea980172

SHA512
333cd7ce4e548e7d836cd637e43ca239d784da9ce84ad862738acb503e917dbbb07244966e26cc1a3fcace94f03501379ba9c4c54142c1f40b531388390612d0

Download Submit
memory/2196-1-0x0000000073FA0000-0x000000007454B000-memory.dmp

Filesize
5.7MB

Download
memory/2196-2-0x0000000073FA0000-0x000000007454B000-memory.dmp

Filesize
5.7MB

Download
memory/2196-12-0x0000000073FA0000-0x000000007454B000-memory.dmp

Filesize
5.7MB

Download
memory/2196-13-0x0000000073FA0000-0x000000007454B000-memory.dmp

Filesize
5.7MB

Download
memory/2196-25-0x0000000073FA0000-0x000000007454B000-memory.dmp

Filesize
5.7MB

Download
memory/2196-0-0x0000000073FA1000-0x0000000073FA2000-memory.dmp

Filesize
4KB

Download
memory/2196-32-0x0000000073FA0000-0x000000007454B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-43-0x0000000073FA0000-0x000000007454B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-34-0x0000000073FA0000-0x000000007454B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-33-0x0000000073FA0000-0x000000007454B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-44-0x0000000073FA0000-0x000000007454B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-64-0x0000000073FA0000-0x000000007454B000-memory.dmp

Filesize
5.7MB

Download
memory/2968-54-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2968-56-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2968-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2968-52-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2968-48-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2968-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2968-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2968-60-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2968-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2968-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2968-65-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads