remcos | cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124

General

Target

cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe
Size

1.9MB
MD5

a1fa1f1fb1412e7de0e3bef87343290d
SHA1

7bc05b344cb418027ad279c036a9182e4e5d7350
SHA256

cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124
SHA512

1f1a8cc9763639482fefc1ec6b61d939426e699dbe7a2b621c2eebc880b420c10b25e0c27378096146ae2cc1dbe0fdb9e7a9ed0b6d3f2929d05c24147a81124a
SSDEEP

24576:MD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6y1:MF+QrFUBgq25eKu6y1

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-1-5-21-814918696-1585701690-3140955116-1000\Control Panel\International\Geo\Nation	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe

Executes dropped EXE 2 IoCs

pid	Process
5248	sbietrcl.exe
4728	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-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5248 set thread context of 4728	5248	sbietrcl.exe	95

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	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.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
180	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe
180	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe
180	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe
180	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe
180	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe
180	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe
5248	sbietrcl.exe
5248	sbietrcl.exe
5248	sbietrcl.exe
5248	sbietrcl.exe
5248	sbietrcl.exe
5248	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	180	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe
Token: SeDebugPrivilege	5248	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4728	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 180 wrote to memory of 5248	180	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe	94
PID 180 wrote to memory of 5248	180	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe	94
PID 180 wrote to memory of 5248	180	cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe	94
PID 5248 wrote to memory of 4728	5248	sbietrcl.exe	95
PID 5248 wrote to memory of 4728	5248	sbietrcl.exe	95
PID 5248 wrote to memory of 4728	5248	sbietrcl.exe	95
PID 5248 wrote to memory of 4728	5248	sbietrcl.exe	95
PID 5248 wrote to memory of 4728	5248	sbietrcl.exe	95
PID 5248 wrote to memory of 4728	5248	sbietrcl.exe	95
PID 5248 wrote to memory of 4728	5248	sbietrcl.exe	95
PID 5248 wrote to memory of 4728	5248	sbietrcl.exe	95
PID 5248 wrote to memory of 4728	5248	sbietrcl.exe	95

C:\Users\Admin\AppData\Local\Temp\cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.exe
"C:\Users\Admin\AppData\Local\Temp\cc25c37834e04127c13349d5a8639e15163ee72e9a156efb06f06baccb524124.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:180
- 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:5248
- - 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:4728

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
1.9MB

MD5
c48f98c2e2770a3403b18d1b4e3bf63f

SHA1
3cfcca0683abc0bf8e3533afb34473975a9c681b

SHA256
e0daf59616079bdaf90975a454673cb9b0be1b9317a0003764c781c6623d4526

SHA512
dfefb6ee8f50a690ff892d7eb42192ca2df056933b3b7292b22a95b0751c505de9414d106e464547d2e056253cd76d547daeb0dcbdfd8f5158779164c648c4d1

Download Submit
memory/180-30-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/180-1-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/180-2-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/180-5-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/180-6-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/180-18-0x00000000755A2000-0x00000000755A3000-memory.dmp

Filesize
4KB

Download
memory/180-19-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/180-0-0x00000000755A2000-0x00000000755A3000-memory.dmp

Filesize
4KB

Download
memory/4728-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4728-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4728-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4728-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4728-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4728-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4728-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5248-32-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/5248-34-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/5248-33-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/5248-31-0x00000000755A0000-0x0000000075B51000-memory.dmp

Filesize
5.7MB

Download
memory/5248-46-0x00000000755A0000-0x0000000075B51000-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