remcos | 940d1251aa1a8c863182a16ef1f90de045e890b49dbbeeb35b3b2c3023ef4296

Analysis

max time kernel
148s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-10-2024 21:00

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General

Target

ae233736eccad67563e7c9d5e2636253.exe
Size

21KB
MD5

ae233736eccad67563e7c9d5e2636253
SHA1

b3a333728028c0bc861e12e084961a7009ef26bd
SHA256

940d1251aa1a8c863182a16ef1f90de045e890b49dbbeeb35b3b2c3023ef4296
SHA512

ddc92c0c0d1329499e1342ce5fc2fbd0bb46af08787ebec2df3cccb0089b423980a5a71fd845942e18db05ec43a967d6b059a2e350e02dd4e250c4da815fc256
SSDEEP

384:HZszjj4jj9SppteWZJHo39Mp7e2BQHNx/rvkKSO8SnRr96R4:Ozjj4jj9GAWZIMZeH/zg4Roa

Score

10^/10

remcos inspiracion discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

INSPIRACION

27septiembre.con-ip.com:7775

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-A5D8Z8
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 3024 created 3472	3024	ae233736eccad67563e7c9d5e2636253.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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Serdmvqgny = "C:\\Users\\Admin\\AppData\\Roaming\\Serdmvqgny.exe"	ae233736eccad67563e7c9d5e2636253.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
3	bitbucket.org
4	bitbucket.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3024 set thread context of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97

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	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ae233736eccad67563e7c9d5e2636253.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3024	ae233736eccad67563e7c9d5e2636253.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3024	ae233736eccad67563e7c9d5e2636253.exe
Token: SeDebugPrivilege	3024	ae233736eccad67563e7c9d5e2636253.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2404	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97
PID 3024 wrote to memory of 2404	3024	ae233736eccad67563e7c9d5e2636253.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3472
- C:\Users\Admin\AppData\Local\Temp\ae233736eccad67563e7c9d5e2636253.exe
  "C:\Users\Admin\AppData\Local\Temp\ae233736eccad67563e7c9d5e2636253.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:3024
- 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
  - Suspicious use of SetWindowsHookEx
  PID:2404

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=4464,i,1330210614411927383,9239043499051775691,262144 --variations-seed-version --mojo-platform-channel-handle=1320 /prefetch:8
1⤵
PID:648

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

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
c55e7ab5e41f7c8bd0a3888d2bd895fd

SHA1
0376366744393bc9ba172a5a262a4af6650d8edf

SHA256
a692c9bab5985ad3d7b6645f2523d49ddbecdd28fecaeabacc64ef7f8423d7c0

SHA512
2a97cf1a8b734b54da3295582989637ad6c4115fc431788192432a49afe06369ccc9f3eabb5bf83eb0e82d781cd64374da3c85f839186c2cd5d521360256315a

Download Submit
memory/2404-1095-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2404-1109-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3024-0-0x0000000074BFE000-0x0000000074BFF000-memory.dmp

Filesize
4KB

Download
memory/3024-1-0x0000000000770000-0x000000000077A000-memory.dmp

Filesize
40KB

Download
memory/3024-2-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3024-3-0x0000000005B20000-0x0000000005C3E000-memory.dmp

Filesize
1.1MB

Download
memory/3024-4-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-11-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-51-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-67-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-65-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-63-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-61-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-59-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-57-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-55-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-53-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-49-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-47-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-45-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-43-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-39-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-37-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-35-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-33-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-31-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-27-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-25-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-41-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-29-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-21-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-20-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-15-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-13-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-9-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-7-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-5-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-23-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-17-0x0000000005B20000-0x0000000005C38000-memory.dmp

Filesize
1.1MB

Download
memory/3024-1078-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3024-1079-0x0000000006060000-0x00000000060F8000-memory.dmp

Filesize
608KB

Download
memory/3024-1080-0x0000000005E80000-0x0000000005ECC000-memory.dmp

Filesize
304KB

Download
memory/3024-1084-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3024-1086-0x0000000074BFE000-0x0000000074BFF000-memory.dmp

Filesize
4KB

Download
memory/3024-1087-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3024-1085-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3024-1088-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3024-1089-0x0000000006720000-0x0000000006CC4000-memory.dmp

Filesize
5.6MB

Download
memory/3024-1090-0x0000000006100000-0x0000000006154000-memory.dmp

Filesize
336KB

Download
memory/3024-1100-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download