remcos | a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8

General

Target

a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe
Size

1.9MB
MD5

6f4b9a86ae77415b5497874919ddf6d1
SHA1

1986f8eb59766fca81c04ee26ce36e6f0aca0a99
SHA256

a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8
SHA512

8b818fd1531b45a47571dfebdc8730114bbad58ec6db64f81591ee78ea84eee0c07074c38475c994a44b36324b3f22fc3de201e4dc4bfb39019e2700c7c02ba2
SSDEEP

49152:FVg5tQ7aWpVDYcHDNYiOE/rvSt7Ch+aodoHwGgQG5:rg56Zhj+iO8SB3DbQ

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

162.251.122.86:6644

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-CGA6IQ
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
Remcos family
remcos

Drops startup file 1 IoCs

Processes:

dews.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dews.vbs	dews.exe

Executes dropped EXE 1 IoCs

Processes:

dews.exe

pid	Process
1796	dews.exe

Loads dropped DLL 1 IoCs

Processes:

a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe

pid	Process
2612	a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral1/files/0x00070000000192f0-8.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

dews.exe

description	pid	Process	procid_target
PID 1796 set thread context of 2784	1796	dews.exe	31

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

Processes:

a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exedews.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dews.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

dews.exe

pid	Process
1796	dews.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exedews.exe

description	pid	Process	procid_target
PID 2612 wrote to memory of 1796	2612	a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe	30
PID 2612 wrote to memory of 1796	2612	a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe	30
PID 2612 wrote to memory of 1796	2612	a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe	30
PID 2612 wrote to memory of 1796	2612	a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe	30
PID 1796 wrote to memory of 2784	1796	dews.exe	31
PID 1796 wrote to memory of 2784	1796	dews.exe	31
PID 1796 wrote to memory of 2784	1796	dews.exe	31
PID 1796 wrote to memory of 2784	1796	dews.exe	31
PID 1796 wrote to memory of 2784	1796	dews.exe	31

C:\Users\Admin\AppData\Local\Temp\a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe
"C:\Users\Admin\AppData\Local\Temp\a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Users\Admin\AppData\Local\overrough\dews.exe
  "C:\Users\Admin\AppData\Local\Temp\a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1796
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8.exe"
    3⤵
    PID:2784

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:\Users\Admin\AppData\Local\Temp\Hezron

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
\Users\Admin\AppData\Local\overrough\dews.exe

Filesize
1.9MB

MD5
6f4b9a86ae77415b5497874919ddf6d1

SHA1
1986f8eb59766fca81c04ee26ce36e6f0aca0a99

SHA256
a6efd2f90c60aa91d0066df9ec79d8a72d99e942d49c8e7327f82c58b86077a8

SHA512
8b818fd1531b45a47571dfebdc8730114bbad58ec6db64f81591ee78ea84eee0c07074c38475c994a44b36324b3f22fc3de201e4dc4bfb39019e2700c7c02ba2

Download Submit
memory/1796-20-0x00000000006C0000-0x0000000000AC0000-memory.dmp

Filesize
4.0MB

Download
memory/2612-6-0x00000000006D0000-0x0000000000AD0000-memory.dmp

Filesize
4.0MB

Download
memory/2784-24-0x0000000000540000-0x0000000000540000-memory.dmp

Download
memory/2784-22-0x0000000000400000-0x0000000000593000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads