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 1296 set thread context of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102

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
2488	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102
PID 1296 wrote to memory of 2488	1296	a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178.exe	102

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:1296
- 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:2488

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
046bc16a98588b731a14b2692bdc4f5a

SHA1
3bdca0d16eb22887bc6fed88c8c534edf428f769

SHA256
6b826417d7791de36f513c633f9307bac2e75342d42276b23ed111de96e87d47

SHA512
2020fd675fe118c07355c873f5d07f88cb64b43bfd35bb3fe070f1b2961d14f621885d932d98bc2d996b90397ee739c66c9c57d6b3a8d3a9a4c1b50ed8f13c66

Download Submit
memory/1296-6-0x00000000746F0000-0x0000000074EA0000-memory.dmp

Filesize
7.7MB

Download
memory/1296-2-0x0000000005BD0000-0x0000000006174000-memory.dmp

Filesize
5.6MB

Download
memory/1296-3-0x0000000005620000-0x00000000056B2000-memory.dmp

Filesize
584KB

Download
memory/1296-4-0x00000000056C0000-0x000000000575C000-memory.dmp

Filesize
624KB

Download
memory/1296-5-0x00000000055B0000-0x00000000055BA000-memory.dmp

Filesize
40KB

Download
memory/1296-0-0x00000000746FE000-0x00000000746FF000-memory.dmp

Filesize
4KB

Download
memory/1296-7-0x0000000006920000-0x0000000006932000-memory.dmp

Filesize
72KB

Download
memory/1296-8-0x00000000746FE000-0x00000000746FF000-memory.dmp

Filesize
4KB

Download
memory/1296-9-0x00000000746F0000-0x0000000074EA0000-memory.dmp

Filesize
7.7MB

Download
memory/1296-10-0x0000000008120000-0x00000000081E0000-memory.dmp

Filesize
768KB

Download
memory/1296-1-0x0000000000AE0000-0x0000000000BC6000-memory.dmp

Filesize
920KB

Download
memory/1296-20-0x00000000746F0000-0x0000000074EA0000-memory.dmp

Filesize
7.7MB

Download
memory/2488-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2488-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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