remcos | c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd

General

Target

c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
Size

1018KB
MD5

82eada34cc687b8518c5dbb56eff51a7
SHA1

59609925ace4619730267711badbf32da98bd6c7
SHA256

c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd
SHA512

e3ca53580d24d810b539ab58572bb9cd964e4cff918839d4027b31a9aef645fdc5bde7e33baed905386fdfdcf14f97dfea99f670794a58af4b528bd26f7eb13b
SSDEEP

12288:Cp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRzwAY3AzC2:CpugRNJI1D39dlfGQrFUxwAeAzC2

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	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe

Executes dropped EXE 2 IoCs

pid	Process
2708	sbietrcl.exe
2040	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"	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2708 set thread context of 2040	2708	sbietrcl.exe	96

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	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3220	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
3220	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
3220	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
3220	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
3220	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
3220	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
2708	sbietrcl.exe
2708	sbietrcl.exe
2708	sbietrcl.exe
2708	sbietrcl.exe
2708	sbietrcl.exe
2708	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3220	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
Token: SeDebugPrivilege	2708	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3220 wrote to memory of 2708	3220	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe	94
PID 3220 wrote to memory of 2708	3220	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe	94
PID 3220 wrote to memory of 2708	3220	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe	94
PID 2708 wrote to memory of 2040	2708	sbietrcl.exe	96
PID 2708 wrote to memory of 2040	2708	sbietrcl.exe	96
PID 2708 wrote to memory of 2040	2708	sbietrcl.exe	96
PID 2708 wrote to memory of 2040	2708	sbietrcl.exe	96
PID 2708 wrote to memory of 2040	2708	sbietrcl.exe	96
PID 2708 wrote to memory of 2040	2708	sbietrcl.exe	96
PID 2708 wrote to memory of 2040	2708	sbietrcl.exe	96
PID 2708 wrote to memory of 2040	2708	sbietrcl.exe	96
PID 2708 wrote to memory of 2040	2708	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
"C:\Users\Admin\AppData\Local\Temp\c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.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:3220
- 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:2708
- - 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:2040

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
1.0MB

MD5
3a9e97fbe54fefa3c129b0944128b79a

SHA1
3cbe71178b43a6f8255c1c624bfd61d946e13288

SHA256
8db3d3b257ad47781c91136c140188f1d679bb508b45fd1b46318d5fe30aa6ca

SHA512
63df79a6f94dda3253f819575f28277075bcaa83b7b95c1fa256991cc16574cf8eb3db2338fe27dd0213ef530e59341d17f8bdf88ff397e15e60456de2873ebc

Download Submit
memory/2040-35-0x0000000000580000-0x0000000000597000-memory.dmp

Filesize
92KB

Download
memory/2708-38-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/2708-32-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/2708-31-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/2708-29-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/2708-30-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3220-3-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3220-28-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3220-17-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3220-16-0x0000000074BE2000-0x0000000074BE3000-memory.dmp

Filesize
4KB

Download
memory/3220-4-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3220-0-0x0000000074BE2000-0x0000000074BE3000-memory.dmp

Filesize
4KB

Download
memory/3220-2-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3220-1-0x0000000074BE0000-0x0000000075191000-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