remcos | efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a

General

Target

efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
Size

1.0MB
MD5

54a5436bb5bf3977e98eda5ce6f8e8d2
SHA1

5aed6273fe965d5e0c41b0e934aa92099327e4da
SHA256

efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a
SHA512

0948ad9fb15f733c2a7df75f72da0dbd9a96e27b8228b11346c20fdcd0fc2888c634bc2ba5cb3ffd82c79190745ac7eba8f278d7036d79fa2cab6de8fc1f6ab9
SSDEEP

12288:FWCYKo7G7uh5W7R1c7MWLy5FbvG8bDzIMM3bGpsgUVEgcb8YaMCnHMybyac7nSZ7:FW+o7Co5Ww7Muyjbu4VlUVEtaMJZ7SZ

Score

10^/10

remcos host discovery rat

Malware Config

Extracted

Family

remcos

Botnet

Host

C2

oyo.work.gd:3142

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
vlc
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
pdf
mouse_option
false
mutex
jkm-I9KENP
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
ios
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1512 set thread context of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92

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	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2264	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 464	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	89
PID 1512 wrote to memory of 464	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	89
PID 1512 wrote to memory of 464	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	89
PID 1512 wrote to memory of 5096	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	90
PID 1512 wrote to memory of 5096	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	90
PID 1512 wrote to memory of 5096	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	90
PID 1512 wrote to memory of 5004	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	91
PID 1512 wrote to memory of 5004	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	91
PID 1512 wrote to memory of 5004	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	91
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92
PID 1512 wrote to memory of 2264	1512	efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe	92

C:\Users\Admin\AppData\Local\Temp\efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
"C:\Users\Admin\AppData\Local\Temp\efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Users\Admin\AppData\Local\Temp\efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
  "C:\Users\Admin\AppData\Local\Temp\efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe"
  2⤵
  PID:464
- C:\Users\Admin\AppData\Local\Temp\efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
  "C:\Users\Admin\AppData\Local\Temp\efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe"
  2⤵
  PID:5096
- C:\Users\Admin\AppData\Local\Temp\efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
  "C:\Users\Admin\AppData\Local\Temp\efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe"
  2⤵
  PID:5004
- C:\Users\Admin\AppData\Local\Temp\efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe
  "C:\Users\Admin\AppData\Local\Temp\efbc15ccbe9e7b1f1648d94c5e38e3149bff5d33ad93c0a56e68db648050509a.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2264

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

C:\ProgramData\pdf\logs.dat

Filesize
144B

MD5
bccdfd3e738d2d3acd3040ee180d1e59

SHA1
e8de099742985d347c801b0991ce5ff18cb0e524

SHA256
83ff809fa0beeab1599272e6c4fca050bd4468f9ce3ae4a87d08c461568ad1ae

SHA512
ef5ef9cc7c62ae46097fff4558979e8608c4e4f9f0d96249e63f597e97c959848e86d831fc3e2be1ffd2900cab7d52a63ad591339204dfb609adc7d96acc9d5a

Download Submit
memory/1512-7-0x000000007533E000-0x000000007533F000-memory.dmp

Filesize
4KB

Download
memory/1512-5-0x0000000005140000-0x000000000514A000-memory.dmp

Filesize
40KB

Download
memory/1512-1-0x0000000000610000-0x0000000000714000-memory.dmp

Filesize
1.0MB

Download
memory/1512-4-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/1512-2-0x0000000005670000-0x0000000005C14000-memory.dmp

Filesize
5.6MB

Download
memory/1512-6-0x0000000006830000-0x00000000068CC000-memory.dmp

Filesize
624KB

Download
memory/1512-0-0x000000007533E000-0x000000007533F000-memory.dmp

Filesize
4KB

Download
memory/1512-8-0x0000000005390000-0x00000000053A2000-memory.dmp

Filesize
72KB

Download
memory/1512-9-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/1512-10-0x00000000068D0000-0x0000000006990000-memory.dmp

Filesize
768KB

Download
memory/1512-3-0x0000000005160000-0x00000000051F2000-memory.dmp

Filesize
584KB

Download
memory/1512-20-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/2264-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2264-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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