remcos | e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124

General

Target

e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe
Size

1.4MB
MD5

7db1a0b67a4f30a44b64919b8ab85280
SHA1

b0d7831aa9191eeb2a3c2ff2f5784cea63262305
SHA256

e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124
SHA512

3d4de1d54d527ee1c750202e2d24bf10c20fcd65b24b50deec051dee61446bd375d85aa291462aab39c99109563db7f39e2d1a488ce669252458bbc95439eecd
SSDEEP

24576:gD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJ3U:gF+QrFUBgq25eKZU

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
Remcos family
remcos

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe

Executes dropped EXE 2 IoCs

pid	Process
3908	sbietrcl.exe
2120	sbietrcl.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3908 set thread context of 2120	3908	sbietrcl.exe	85

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	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.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
3512	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe
3512	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe
3512	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe
3512	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe
3512	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe
3512	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe
3908	sbietrcl.exe
3908	sbietrcl.exe
3908	sbietrcl.exe
3908	sbietrcl.exe
3908	sbietrcl.exe
3908	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3512	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe
Token: SeDebugPrivilege	3908	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2120	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3512 wrote to memory of 3908	3512	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe	82
PID 3512 wrote to memory of 3908	3512	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe	82
PID 3512 wrote to memory of 3908	3512	e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe	82
PID 3908 wrote to memory of 2120	3908	sbietrcl.exe	85
PID 3908 wrote to memory of 2120	3908	sbietrcl.exe	85
PID 3908 wrote to memory of 2120	3908	sbietrcl.exe	85
PID 3908 wrote to memory of 2120	3908	sbietrcl.exe	85
PID 3908 wrote to memory of 2120	3908	sbietrcl.exe	85
PID 3908 wrote to memory of 2120	3908	sbietrcl.exe	85
PID 3908 wrote to memory of 2120	3908	sbietrcl.exe	85
PID 3908 wrote to memory of 2120	3908	sbietrcl.exe	85
PID 3908 wrote to memory of 2120	3908	sbietrcl.exe	85

C:\Users\Admin\AppData\Local\Temp\e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe
"C:\Users\Admin\AppData\Local\Temp\e98307f10fb1d21c36c2a1104288cd0ce29684490e591df56bdd362cf6afc124N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3512
- 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:3908
- - 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:2120

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

Query Registry

1

T1012

System Information Discovery

2

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\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
1.4MB

MD5
1d78d22f2f5d037d54d24642af342eea

SHA1
6debd7491f56055de82247ac5e024053f5172b1a

SHA256
b00c2c68bf39909546358b872bc874499a02dc0a3ef7de7d18483e32dd970013

SHA512
f1302aa81eb0cd9693d4a8d1127db3e39746920bf2a509bcf65a1a2662ff74cbd96283896339ba373b2f149b5ed6b75c59a3aa73ef2cb4a426adf67132b428c8

Download Submit
memory/2120-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2120-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2120-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2120-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2120-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2120-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3512-18-0x0000000075552000-0x0000000075553000-memory.dmp

Filesize
4KB

Download
memory/3512-29-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/3512-19-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/3512-0-0x0000000075552000-0x0000000075553000-memory.dmp

Filesize
4KB

Download
memory/3512-6-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/3512-5-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/3512-2-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/3512-1-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/3908-32-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/3908-31-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/3908-33-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/3908-34-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download
memory/3908-46-0x0000000075550000-0x0000000075B01000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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