remcos | 07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e

General

Target

07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe
Size

1.3MB
MD5

848fcc30357be982b8d107e6c45390a6
SHA1

477c03e4f9fb45f9ca6ae04c79728474ffc4cf2a
SHA256

07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e
SHA512

a2adde1775886db699b103742469c8675c56633cac1c4b110947793b10c562d27ccd9fb482d5dce5f1052684925e156f81f70169d1a56fa61c6cbf4515bb65eb
SSDEEP

24576:Vu6J33O0c+JY5UZ+XC0kGso6FaKQ+KLJVQBZNsYfKxQfq+WY:3u0c++OCvkGs9FaKQLLJuB8owQiY

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.3.64.152:2559

Attributes

audio_folder
MicRecords
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-ZFXG9Y
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

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

Executes dropped EXE 2 IoCs

pid	Process
516	semispheroidal.exe
5068	semispheroidal.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0007000000023ca2-9.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5068 set thread context of 2964	5068	semispheroidal.exe	87
PID 2964 set thread context of 5000	2964	svchost.exe	88

System Location Discovery: System Language Discovery 1 TTPs 4 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	07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	semispheroidal.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	semispheroidal.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2964	svchost.exe
2964	svchost.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
516	semispheroidal.exe
5068	semispheroidal.exe
2964	svchost.exe

Suspicious use of FindShellTrayWindow 8 IoCs

pid	Process
2972	07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe
2972	07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe
2972	07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe
516	semispheroidal.exe
516	semispheroidal.exe
516	semispheroidal.exe
5068	semispheroidal.exe
5068	semispheroidal.exe

Suspicious use of SendNotifyMessage 8 IoCs

pid	Process
2972	07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe
2972	07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe
2972	07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe
516	semispheroidal.exe
516	semispheroidal.exe
516	semispheroidal.exe
5068	semispheroidal.exe
5068	semispheroidal.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 516	2972	07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe	83
PID 2972 wrote to memory of 516	2972	07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe	83
PID 2972 wrote to memory of 516	2972	07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe	83
PID 516 wrote to memory of 4836	516	semispheroidal.exe	85
PID 516 wrote to memory of 4836	516	semispheroidal.exe	85
PID 516 wrote to memory of 4836	516	semispheroidal.exe	85
PID 516 wrote to memory of 5068	516	semispheroidal.exe	86
PID 516 wrote to memory of 5068	516	semispheroidal.exe	86
PID 516 wrote to memory of 5068	516	semispheroidal.exe	86
PID 5068 wrote to memory of 2964	5068	semispheroidal.exe	87
PID 5068 wrote to memory of 2964	5068	semispheroidal.exe	87
PID 5068 wrote to memory of 2964	5068	semispheroidal.exe	87
PID 5068 wrote to memory of 2964	5068	semispheroidal.exe	87
PID 2964 wrote to memory of 5000	2964	svchost.exe	88
PID 2964 wrote to memory of 5000	2964	svchost.exe	88
PID 2964 wrote to memory of 5000	2964	svchost.exe	88
PID 2964 wrote to memory of 5000	2964	svchost.exe	88

C:\Users\Admin\AppData\Local\Temp\07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe
"C:\Users\Admin\AppData\Local\Temp\07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Users\Admin\AppData\Local\Allene\semispheroidal.exe
  "C:\Users\Admin\AppData\Local\Temp\07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:516
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e.exe"
    3⤵
    PID:4836
- - C:\Users\Admin\AppData\Local\Allene\semispheroidal.exe
    "C:\Users\Admin\AppData\Local\Allene\semispheroidal.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:5068
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Users\Admin\AppData\Local\Allene\semispheroidal.exe"
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:2964
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        
        PID:5000

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:\Users\Admin\AppData\Local\Allene\semispheroidal.exe

Filesize
1.3MB

MD5
848fcc30357be982b8d107e6c45390a6

SHA1
477c03e4f9fb45f9ca6ae04c79728474ffc4cf2a

SHA256
07b27d0e65f751737e5d9bee0b78b5a56933264014b5171ae03f3c2c3b51ae0e

SHA512
a2adde1775886db699b103742469c8675c56633cac1c4b110947793b10c562d27ccd9fb482d5dce5f1052684925e156f81f70169d1a56fa61c6cbf4515bb65eb

Download Submit
C:\Users\Admin\AppData\Local\Temp\autD5CE.tmp

Filesize
421KB

MD5
d2302d1d872717016055d5c011e77d57

SHA1
01a9e85c6e7661e3c7f5f108fcb2315062f30b59

SHA256
7d930a783aec2591fed6006a624528425d5198bc974ccb8c8241a9afb82f11b1

SHA512
93fffb752adbf05b16ae1912c3342010c749cb13924f5b92dca6a42a3d89909aa5cfdb406dc51ebd99479c91c13873a124b94519ba91d88cb1c8c6fffd316595

Download Submit
C:\Users\Admin\AppData\Local\Temp\electicism

Filesize
483KB

MD5
9e287cf0e603f30cb9122a150f58bc78

SHA1
80396c204def66c4688fc8815509bb1d3de7168b

SHA256
6caf1df0dacfa64c525647282ee449b529cf49f5316330496be4081d5257a6e5

SHA512
684c53328842d8fd053dddb8e575a59d40abeeceada56ffbcba7c5c33becb87c237a61f6f5b6b17706274b41b0a2df86a1d3e2679f9b45f5f5b13d33df76b538

Download Submit
memory/516-18-0x0000000000ED0000-0x00000000012D0000-memory.dmp

Filesize
4.0MB

Download
memory/2964-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2964-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2964-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2964-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2964-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2972-6-0x00000000014C0000-0x00000000018C0000-memory.dmp

Filesize
4.0MB

Download
memory/5000-33-0x0000000000BD0000-0x0000000000BDE000-memory.dmp

Filesize
56KB

Download
memory/5000-34-0x0000000000BD0000-0x0000000000BDE000-memory.dmp

Filesize
56KB

Download
memory/5000-36-0x0000000000BD0000-0x0000000000BDE000-memory.dmp

Filesize
56KB

Download
memory/5068-28-0x0000000000ED0000-0x00000000012D0000-memory.dmp

Filesize
4.0MB

Download

Analysis

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