remcos | 1ec5faab8689f3aceb90da9055752f1ff83b0197048bc8e0b7c96114c85b5d17

General

Target

3.exe
Size

943KB
MD5

44987550d90e3bd86f36455b27944b9d
SHA1

2d5bb86a33fb4f73713c31eda7ce935dc126cc14
SHA256

1ec5faab8689f3aceb90da9055752f1ff83b0197048bc8e0b7c96114c85b5d17
SHA512

e603b047708ca7a4ed76bfc25675a620145959ace70eb675e216c066b6bf35b5a287a4cc411aa7c6e9f149c6f6644df39bce2756f5c2d6a455fcc12c6801bf33
SSDEEP

24576:bdFea6fyBIImRuR5BC9wwbFuaAOfsTz/lpJZakt:Rz6UmRuR/6wq5AOfu/1Za

Score

10^/10

remcos ood discovery rat

Malware Config

Extracted

Family

remcos

Botnet

ood

C2

goody.work.gd:4173

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
ios
mouse_option
false
mutex
gig-R8G1B2
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
sos
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 1356 set thread context of 1488	1356	3.exe	91

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1660	1356	WerFault.exe	82

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	3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1488	3.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1356 wrote to memory of 1488	1356	3.exe	91
PID 1356 wrote to memory of 1488	1356	3.exe	91
PID 1356 wrote to memory of 1488	1356	3.exe	91
PID 1356 wrote to memory of 1488	1356	3.exe	91
PID 1356 wrote to memory of 1488	1356	3.exe	91
PID 1356 wrote to memory of 1488	1356	3.exe	91
PID 1356 wrote to memory of 1488	1356	3.exe	91
PID 1356 wrote to memory of 1488	1356	3.exe	91
PID 1356 wrote to memory of 1488	1356	3.exe	91
PID 1356 wrote to memory of 1488	1356	3.exe	91
PID 1356 wrote to memory of 1488	1356	3.exe	91
PID 1356 wrote to memory of 1488	1356	3.exe	91

C:\Users\Admin\AppData\Local\Temp\3.exe
"C:\Users\Admin\AppData\Local\Temp\3.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1356
- C:\Users\Admin\AppData\Local\Temp\3.exe
  "C:\Users\Admin\AppData\Local\Temp\3.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1356 -s 1200
  2⤵
  - Program crash
  PID:1660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1356 -ip 1356
1⤵
PID:2412

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\ios\logs.dat

Filesize
144B

MD5
218646d183350aee6b50cf397ec48fd9

SHA1
a3a91f37fa33822b1bb020f32fa0af67823c0df3

SHA256
87f360dae60769de85cd8df987e3e3cc513f02353e375cdd68e31e8689523982

SHA512
0fef7fd77385eb115fb8ef957cb1c488325d873e22e5f700572d183780d57825ecaffd3412902957ccb9a87671f1b00a98a203f49532cfcc64cc2c8403d7e33e

Download Submit
memory/1356-6-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/1356-2-0x0000000005730000-0x0000000005CD4000-memory.dmp

Filesize
5.6MB

Download
memory/1356-3-0x0000000005180000-0x0000000005212000-memory.dmp

Filesize
584KB

Download
memory/1356-5-0x0000000005400000-0x000000000549C000-memory.dmp

Filesize
624KB

Download
memory/1356-4-0x0000000005230000-0x000000000523A000-memory.dmp

Filesize
40KB

Download
memory/1356-0-0x000000007474E000-0x000000007474F000-memory.dmp

Filesize
4KB

Download
memory/1356-7-0x00000000052F0000-0x0000000005304000-memory.dmp

Filesize
80KB

Download
memory/1356-8-0x000000007474E000-0x000000007474F000-memory.dmp

Filesize
4KB

Download
memory/1356-9-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/1356-10-0x0000000006610000-0x00000000066D0000-memory.dmp

Filesize
768KB

Download
memory/1356-1-0x00000000007D0000-0x00000000008C2000-memory.dmp

Filesize
968KB

Download
memory/1356-21-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/1488-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1488-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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