remcos | 940d1251aa1a8c863182a16ef1f90de045e890b49dbbeeb35b3b2c3023ef4296

Analysis

max time kernel
178s
max time network
180s
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, 14:46

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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 4720 created 3468	4720	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
1	bitbucket.org
3	bitbucket.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4720 set thread context of 2960	4720	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	ae233736eccad67563e7c9d5e2636253.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4720	ae233736eccad67563e7c9d5e2636253.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4720	ae233736eccad67563e7c9d5e2636253.exe
Token: SeDebugPrivilege	4720	ae233736eccad67563e7c9d5e2636253.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2960	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97
PID 4720 wrote to memory of 2960	4720	ae233736eccad67563e7c9d5e2636253.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3468
- 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:4720
- 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:2960

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,8231329449558834090,4540802069600791165,262144 --variations-seed-version --mojo-platform-channel-handle=4028 /prefetch:8
1⤵
PID:2052

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
12df5bc91c6cefaa2cc98df6b464df39

SHA1
abdeb601994a0709ba564fae79551226ba3c69db

SHA256
b739eb8c18b1fd77548fe2530eb0c6de0cc94cc73f9753ccb29b0a0bfc937823

SHA512
c1b5d65ceb93af98f306ef482e356bb12957aa7bb8d0657f474565e8219d2c6aea9957a03ae08d9275334a9381532026f6c9e6ea3aa6c40fdfd691e95e550b11

Download Submit
memory/2960-1095-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-1111-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4720-0-0x0000000074F0E000-0x0000000074F0F000-memory.dmp

Filesize
4KB

Download
memory/4720-1-0x0000000000CC0000-0x0000000000CCA000-memory.dmp

Filesize
40KB

Download
memory/4720-2-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4720-3-0x0000000006070000-0x000000000618E000-memory.dmp

Filesize
1.1MB

Download
memory/4720-4-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-19-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-53-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-51-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-67-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-65-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-63-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-61-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-59-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-57-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-55-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-49-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-47-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-45-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-43-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-41-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-39-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-35-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-33-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-31-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-29-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-27-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-25-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-23-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-37-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-17-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-15-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-13-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-11-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-9-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-7-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-5-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-21-0x0000000006070000-0x0000000006188000-memory.dmp

Filesize
1.1MB

Download
memory/4720-1078-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4720-1079-0x0000000006470000-0x0000000006508000-memory.dmp

Filesize
608KB

Download
memory/4720-1080-0x0000000006410000-0x000000000645C000-memory.dmp

Filesize
304KB

Download
memory/4720-1084-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4720-1085-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4720-1086-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4720-1087-0x0000000074F0E000-0x0000000074F0F000-memory.dmp

Filesize
4KB

Download
memory/4720-1088-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4720-1089-0x0000000006D70000-0x0000000007314000-memory.dmp

Filesize
5.6MB

Download
memory/4720-1090-0x0000000006650000-0x00000000066A4000-memory.dmp

Filesize
336KB

Download
memory/4720-1100-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download