remcos | a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178

General

Target

a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe
Size

899KB
MD5

410076dd0a643306b7991a32d9580143
SHA1

7c40be225169cf017cbdfe52ba8225b836dacf4c
SHA256

a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178
SHA512

22ddfe95a188974b1b492c75f4c03d53a5668b52be1520a5cc5fb13915c346ca8485bc5b0678f47e0ad51acf1c4dcd0ffb711605821a5229cafcf07bdc338190
SSDEEP

24576:lHIQsBmLOmrolDJO1Y6xMgKlfizJxQxSAKwe3GO80g:CQsBMOmrwCoZitYSApkGh0g

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 2796 set thread context of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30

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	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2836	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30
PID 2796 wrote to memory of 2836	2796	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	30

C:\Users\Admin\AppData\Local\Temp\a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe
"C:\Users\Admin\AppData\Local\Temp\a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Users\Admin\AppData\Local\Temp\a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe
  "C:\Users\Admin\AppData\Local\Temp\a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2836

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

Replay Monitor

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Downloads

C:\ProgramData\pdf\logs.dat

Filesize
144B

MD5
34f0fe080e659799710266cac1e4bb00

SHA1
12237a3367e81e028a322b0765dbe6d404cc32f4

SHA256
16a608cf13728ef85eacd9cc3a77845a7f730864a97ff3d1a1e995ccbe568c6e

SHA512
f16f390293042437d9569303797da575365bea8b187a5f6e9ef8aace190881172df09c811e567d9d8dad665feb4d1053cc99e57952fb02980e0cd3465ad5bc65

Download Submit
memory/2796-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/2796-1-0x0000000000CB0000-0x0000000000D96000-memory.dmp

Filesize
920KB

Download
memory/2796-2-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2796-3-0x0000000000610000-0x0000000000622000-memory.dmp

Filesize
72KB

Download
memory/2796-4-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/2796-5-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2796-6-0x0000000004EC0000-0x0000000004F80000-memory.dmp

Filesize
768KB

Download
memory/2796-33-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2836-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2836-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-8-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2836-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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