remcos | 83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000

General

Target

83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe
Size

1.4MB
MD5

bb1f3b6e30e3fa5d742ec20a82a29102
SHA1

54acad32dd09cd6b20c034b158e704f68d20519d
SHA256

83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000
SHA512

3e218f87e5219917d9513cad4e41971bca7ce0818b4ccae0f779ee043e7dc9cf6d9cd4fb78559d17173bdb9c5392139bc40b20509368a8eabab91ca3359b0f86
SSDEEP

24576:fAMNezZH4tH1v1yZl4rzYdjGxb4k5fUTTiIRzl5PEilvZ7LZu3jXw:fAlkZ1yZlgH46/0LcovZhGA

Score

10^/10

remcos agosto2024 discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

AGOSTO2024

C2

hotsdefender.webredirect.org:2404

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
true
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
Key
keylog_path
%AppData%
mouse_option
false
mutex
Ag0s70JwbdycP5ikGBT/VhjSeXFA==-KBUYSI
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

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

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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ivacyvpn = "C:\\Users\\Admin\\Pictures\\Ivacy\\Ivacy.exe"	83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe

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	83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4956	83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 4956	1648	83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe	94
PID 1648 wrote to memory of 4956	1648	83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe	94
PID 1648 wrote to memory of 4956	1648	83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe	94
PID 1648 wrote to memory of 4956	1648	83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe	94
PID 1648 wrote to memory of 4956	1648	83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe	94

C:\Users\Admin\AppData\Local\Temp\83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe
"C:\Users\Admin\AppData\Local\Temp\83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Users\Admin\AppData\Local\Temp\83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe
  "C:\Users\Admin\AppData\Local\Temp\83a9481d5d8b9551a289b6d2ca986525b3a20c1a9becc25c27321e2751c0a000.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4956

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1648-18-0x0000000000408000-0x0000000000422000-memory.dmp

Filesize
104KB

Download
memory/1648-5-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/1648-2-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/1648-1-0x0000000000408000-0x0000000000422000-memory.dmp

Filesize
104KB

Download
memory/1648-0-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/1648-6-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/4956-14-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-16-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-12-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-15-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-7-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-13-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/4956-9-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-8-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-17-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-3-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-20-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-24-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-23-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-25-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-29-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download
memory/4956-30-0x0000000000570000-0x00000000005F2000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads