remcos | 7e5d3ca04246a2e61ccf5c307918079001015c5e6f5b1feaa541423949eb444a

General

Target

ad09004806090002400031237.exe
Size

5.1MB
MD5

50e54f3131a1419a0fdac1ec360f300d
SHA1

26254b070e011dd49087d611184ed85af9f1d740
SHA256

7e5d3ca04246a2e61ccf5c307918079001015c5e6f5b1feaa541423949eb444a
SHA512

c93105279cfd4529a8dfa820f059fc92bf698b1441b464f9362dca0277130cb275d66711b4ed4725dc94fdf6070e9c1245a1b63fbcba5c7f9a35c7072003cb4b
SSDEEP

49152:c9C6IGwcuCr4SOgkpEEd6HninHFdrSgoQg3gMKnlSYwoNYPMI3+IwXUio3:cM6FDEdjl46KElSYwoaEI5ao3

Score

10^/10

remcos fortunaa discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

FORTUNAA

C2

octubre7.con-ip.com:7770

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-Y277U9
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

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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SprintDesignerEditor = "C:\\Users\\Admin\\Music\\SprintDesignerUpdater\\SprintVideoOculus.exe"	ad09004806090002400031237.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	ad09004806090002400031237.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ad09004806090002400031237.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1912	ad09004806090002400031237.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4304 wrote to memory of 1912	4304	ad09004806090002400031237.exe	84
PID 4304 wrote to memory of 1912	4304	ad09004806090002400031237.exe	84
PID 4304 wrote to memory of 1912	4304	ad09004806090002400031237.exe	84
PID 4304 wrote to memory of 1912	4304	ad09004806090002400031237.exe	84
PID 4304 wrote to memory of 1912	4304	ad09004806090002400031237.exe	84

C:\Users\Admin\AppData\Local\Temp\ad09004806090002400031237.exe
"C:\Users\Admin\AppData\Local\Temp\ad09004806090002400031237.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4304
- C:\Users\Admin\AppData\Local\Temp\ad09004806090002400031237.exe
  "C:\Users\Admin\AppData\Local\Temp\ad09004806090002400031237.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1912

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

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
50a82f3377ea9454c3769b2ced0e4a3c

SHA1
6b1e4f1ed409551207a8137e2497bbe87e9c3b49

SHA256
797b967e5221d81eb54f2a69cf3a4d2a5445426f93296f847033c3a90172ccaf

SHA512
9301fad043fb3d1f8af8b7f97919b11fef18ab20bc28df24557313f95d4e8301a920bb97925974cc012e3ec84cf2ab814a55e322945a1f78ab70700abe097629

Download Submit
memory/1912-28-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-44-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-19-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-61-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-18-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-60-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-11-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-12-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-45-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-29-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-16-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-20-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-17-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-37-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-36-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-7-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-13-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-22-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/1912-23-0x0000000000400000-0x0000000000AD9000-memory.dmp

Filesize
6.8MB

Download
memory/4304-9-0x0000000000400000-0x0000000000AD9000-memory.dmp

Filesize
6.8MB

Download
memory/4304-0-0x0000000000400000-0x0000000000AD9000-memory.dmp

Filesize
6.8MB

Download
memory/4304-25-0x0000000000724000-0x000000000073C000-memory.dmp

Filesize
96KB

Download
memory/4304-2-0x0000000000724000-0x000000000073C000-memory.dmp

Filesize
96KB

Download
memory/4304-4-0x0000000000400000-0x0000000000AD9000-memory.dmp

Filesize
6.8MB

Download
memory/4304-6-0x0000000000400000-0x0000000000AD9000-memory.dmp

Filesize
6.8MB

Download
memory/4304-8-0x0000000000400000-0x0000000000AD9000-memory.dmp

Filesize
6.8MB

Download
memory/4304-1-0x0000000000400000-0x0000000000AD9000-memory.dmp

Filesize
6.8MB

Download
memory/4304-10-0x0000000000400000-0x0000000000AD9000-memory.dmp

Filesize
6.8MB

Download
memory/4304-3-0x0000000000400000-0x0000000000AD9000-memory.dmp

Filesize
6.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads