remcos | 45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897

General

Target

45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe
Size

1.9MB
MD5

8c294bb770e18048531d6c32fcbe7028
SHA1

462aacd9e08641104d5d3e176f582021e2f9b035
SHA256

45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897
SHA512

6f67a49e27c9e42b1629b75efa4662801eee1a5afb31aa7e2793987dee772ef316f16842bcfda2e5880ed957b7ae8ecc6df5057946caeeb7063ecf5e03b791dc
SSDEEP

24576:jD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6jO:jF+QrFUBgq25eKu6jO

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

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-1-5-21-308834014-1004923324-1191300197-1000\Control Panel\International\Geo\Nation	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe

Executes dropped EXE 2 IoCs

pid	Process
4644	sbietrcl.exe
1320	sbietrcl.exe

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-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4644 set thread context of 1320	4644	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 2 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	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4368	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe
4368	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe
4368	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe
4368	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe
4368	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe
4368	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe
4644	sbietrcl.exe
4644	sbietrcl.exe
4644	sbietrcl.exe
4644	sbietrcl.exe
4644	sbietrcl.exe
4644	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4368	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe
Token: SeDebugPrivilege	4644	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4368 wrote to memory of 4644	4368	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe	93
PID 4368 wrote to memory of 4644	4368	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe	93
PID 4368 wrote to memory of 4644	4368	45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe	93
PID 4644 wrote to memory of 1320	4644	sbietrcl.exe	95
PID 4644 wrote to memory of 1320	4644	sbietrcl.exe	95
PID 4644 wrote to memory of 1320	4644	sbietrcl.exe	95
PID 4644 wrote to memory of 1320	4644	sbietrcl.exe	95
PID 4644 wrote to memory of 1320	4644	sbietrcl.exe	95
PID 4644 wrote to memory of 1320	4644	sbietrcl.exe	95
PID 4644 wrote to memory of 1320	4644	sbietrcl.exe	95
PID 4644 wrote to memory of 1320	4644	sbietrcl.exe	95
PID 4644 wrote to memory of 1320	4644	sbietrcl.exe	95

C:\Users\Admin\AppData\Local\Temp\45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.exe
"C:\Users\Admin\AppData\Local\Temp\45953e1cc73e4d0532131db560a8ff98bfaa191c11ec4466ccb97922c6241897.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:4368
- 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:4644
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    PID:1320

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

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
1.9MB

MD5
211a8720b4974cbc24c9c715e35facad

SHA1
02c72cfef2a851f95dd90da3f40fdb912897d60c

SHA256
29e107465b69056843376304c4582e20292163afdf97ec7193609841617ea922

SHA512
536f52bf05c26a7bae4d82a3ada2abe6bc842b6b6d09769c8b6ea20d2ba3f99f1bfc60faa05dfcd91734caf45351b973caa7f03f9f488ae40e6eca8c2f9d6602

Download Submit
memory/1320-37-0x0000000000580000-0x0000000000597000-memory.dmp

Filesize
92KB

Download
memory/4368-6-0x0000000074FA0000-0x0000000075551000-memory.dmp

Filesize
5.7MB

Download
memory/4368-31-0x0000000074FA0000-0x0000000075551000-memory.dmp

Filesize
5.7MB

Download
memory/4368-0-0x0000000074FA2000-0x0000000074FA3000-memory.dmp

Filesize
4KB

Download
memory/4368-18-0x0000000074FA2000-0x0000000074FA3000-memory.dmp

Filesize
4KB

Download
memory/4368-19-0x0000000074FA0000-0x0000000075551000-memory.dmp

Filesize
5.7MB

Download
memory/4368-20-0x0000000074FA0000-0x0000000075551000-memory.dmp

Filesize
5.7MB

Download
memory/4368-2-0x0000000074FA0000-0x0000000075551000-memory.dmp

Filesize
5.7MB

Download
memory/4368-5-0x0000000074FA0000-0x0000000075551000-memory.dmp

Filesize
5.7MB

Download
memory/4368-1-0x0000000074FA0000-0x0000000075551000-memory.dmp

Filesize
5.7MB

Download
memory/4644-33-0x0000000074FA0000-0x0000000075551000-memory.dmp

Filesize
5.7MB

Download
memory/4644-34-0x0000000074FA0000-0x0000000075551000-memory.dmp

Filesize
5.7MB

Download
memory/4644-35-0x0000000074FA0000-0x0000000075551000-memory.dmp

Filesize
5.7MB

Download
memory/4644-32-0x0000000074FA0000-0x0000000075551000-memory.dmp

Filesize
5.7MB

Download
memory/4644-41-0x0000000074FA0000-0x0000000075551000-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