remcos | 3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28/09/2024, 01:17

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General

Target

3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe
Size

73KB
MD5

ba28e223163c5b2ec9a8b3749dd8df88
SHA1

432148c92b5c723033225b14986a4dd80c1344ff
SHA256

3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25
SHA512

e83c8f0a9b0aec5dba0b738c97c71088595601ed8cb019a2ea1073e08f549b3bd34d4b9e4a91c568214f53448739133680129c39f8bd65a4d3d0163a35911205
SSDEEP

768:bVOf4mUSU2Ip4jBqltCF0AxEjenoB69+FxF:ROA1SFHBWAxEjc+N

Score

10^/10

remcos 59b3ch7k27 discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

59b3ch7k27

59b3.ddns.net:2404

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-LEWDB1
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 3472 created 3496	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	56

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-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ozpagjqxzt = "C:\\Users\\Admin\\AppData\\Roaming\\Ozpagjqxzt.exe"	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3472 set thread context of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89

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	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe
Token: SeDebugPrivilege	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89
PID 3472 wrote to memory of 1276	3472	3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe	89

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3496
- C:\Users\Admin\AppData\Local\Temp\3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe
  "C:\Users\Admin\AppData\Local\Temp\3e77bc5c8cd2052b5b8c14abce4ee3a2bc5d7568860d93524927734732dcaa25.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3472
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1276

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1276-1095-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-1103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3472-28-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-53-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-11-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-21-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-51-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-67-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-65-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-63-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-61-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-59-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-57-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-55-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-25-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-47-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-45-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-43-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-41-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-39-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-37-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-35-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-31-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-29-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-3-0x0000000005AC0000-0x0000000005BDE000-memory.dmp

Filesize
1.1MB

Download
memory/3472-0-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

Filesize
4KB

Download
memory/3472-5-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-19-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-17-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-15-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-13-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-9-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-7-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-23-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-49-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-33-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-4-0x0000000005AC0000-0x0000000005BD8000-memory.dmp

Filesize
1.1MB

Download
memory/3472-1078-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/3472-1079-0x0000000005D60000-0x0000000005DF8000-memory.dmp

Filesize
608KB

Download
memory/3472-1080-0x0000000005C80000-0x0000000005CCC000-memory.dmp

Filesize
304KB

Download
memory/3472-1084-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/3472-1085-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/3472-1086-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/3472-1087-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

Filesize
4KB

Download
memory/3472-1088-0x00000000076C0000-0x0000000007C64000-memory.dmp

Filesize
5.6MB

Download
memory/3472-1089-0x0000000007110000-0x0000000007164000-memory.dmp

Filesize
336KB

Download
memory/3472-1096-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/3472-2-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/3472-1-0x00000000008C0000-0x00000000008D8000-memory.dmp

Filesize
96KB

Download