remcos | d0e1b229f72e52ed760f593059468812cc070b08b1507a2e35da8ecbc1e78788

General

Target

e40598c54f117c13982d83df95dd0bd0N.exe
Size

2.1MB
MD5

e40598c54f117c13982d83df95dd0bd0
SHA1

b4339907202fbfe29d7a04130b74993908984ee2
SHA256

d0e1b229f72e52ed760f593059468812cc070b08b1507a2e35da8ecbc1e78788
SHA512

9c8cfbb2340e625faa999f2561c3213f0e3081161a79a748b2556c5505a70a56f53fc73e04f1345f728a078cbd61055876ac6941dd8617af64ec6bf8b1986a3d
SSDEEP

24576:kD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j73AneLwRp4:kp7E+QrFUBgq2JW

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

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	e40598c54f117c13982d83df95dd0bd0N.exe

Executes dropped EXE 2 IoCs

pid	Process
4228	sbietrcl.exe
4460	sbietrcl.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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	e40598c54f117c13982d83df95dd0bd0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4228 set thread context of 4460	4228	sbietrcl.exe	103

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	e40598c54f117c13982d83df95dd0bd0N.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 18 IoCs

pid	Process
4060	e40598c54f117c13982d83df95dd0bd0N.exe
4060	e40598c54f117c13982d83df95dd0bd0N.exe
4060	e40598c54f117c13982d83df95dd0bd0N.exe
4060	e40598c54f117c13982d83df95dd0bd0N.exe
4060	e40598c54f117c13982d83df95dd0bd0N.exe
4060	e40598c54f117c13982d83df95dd0bd0N.exe
4228	sbietrcl.exe
4228	sbietrcl.exe
4228	sbietrcl.exe
4228	sbietrcl.exe
4228	sbietrcl.exe
4228	sbietrcl.exe
4228	sbietrcl.exe
4228	sbietrcl.exe
4228	sbietrcl.exe
4228	sbietrcl.exe
4228	sbietrcl.exe
4228	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4060	e40598c54f117c13982d83df95dd0bd0N.exe
Token: SeDebugPrivilege	4228	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4460	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4060 wrote to memory of 4228	4060	e40598c54f117c13982d83df95dd0bd0N.exe	100
PID 4060 wrote to memory of 4228	4060	e40598c54f117c13982d83df95dd0bd0N.exe	100
PID 4060 wrote to memory of 4228	4060	e40598c54f117c13982d83df95dd0bd0N.exe	100
PID 4228 wrote to memory of 4460	4228	sbietrcl.exe	103
PID 4228 wrote to memory of 4460	4228	sbietrcl.exe	103
PID 4228 wrote to memory of 4460	4228	sbietrcl.exe	103
PID 4228 wrote to memory of 4460	4228	sbietrcl.exe	103
PID 4228 wrote to memory of 4460	4228	sbietrcl.exe	103
PID 4228 wrote to memory of 4460	4228	sbietrcl.exe	103
PID 4228 wrote to memory of 4460	4228	sbietrcl.exe	103
PID 4228 wrote to memory of 4460	4228	sbietrcl.exe	103
PID 4228 wrote to memory of 4460	4228	sbietrcl.exe	103

C:\Users\Admin\AppData\Local\Temp\e40598c54f117c13982d83df95dd0bd0N.exe
"C:\Users\Admin\AppData\Local\Temp\e40598c54f117c13982d83df95dd0bd0N.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:4060
- 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:4228
- - 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:4460

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3852,i,2727319350781907497,7925939240893079607,262144 --variations-seed-version --mojo-platform-channel-handle=4240 /prefetch:8
1⤵
PID:904

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
2.1MB

MD5
dcd2e401066a2c881765966d13c30f21

SHA1
0d42b5f8fe70589adc5f995f603e6026c66dc41e

SHA256
c76f5f2426e9d50fa54ea1aea7bc2babf67b96c610226c061b2191396e536e0c

SHA512
c981f1723568239668b22cf4cf2c734cdad51fc2c6336cbdbf6452248ddd322614ce9fc80bbb0ce41649a18945a6ce68d277d42aa25787ee76438a397da627d2

Download Submit
memory/4060-0-0x0000000074692000-0x0000000074693000-memory.dmp

Filesize
4KB

Download
memory/4060-1-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4060-2-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4060-5-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4060-6-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4060-18-0x0000000074692000-0x0000000074693000-memory.dmp

Filesize
4KB

Download
memory/4060-19-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4060-28-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4060-31-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4228-33-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4228-32-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4228-34-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4228-35-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4228-47-0x0000000074690000-0x0000000074C41000-memory.dmp

Filesize
5.7MB

Download
memory/4460-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4460-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4460-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4460-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4460-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4460-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4460-50-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads