remcos | 8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118

General

Target

8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
Size

982KB
MD5

d46127b513eaa0e4e1e4d2ab89fe2b4a
SHA1

3478c45ea7e943ac5656186a13a5829256117232
SHA256

8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118
SHA512

2086d69e11d20dd489abed169722fe0b6b2e864d45e2356e703f8d593c0f992beada47a646043af361db59dc514623bbe87746a97e79a4130aa55dc7f9d47278
SSDEEP

24576:QMj4sXd+Zh5lLfwDpuRR7BYutqtoQsFC/Z+Y0yPPov:ssXd+hBYsxqoe0NE

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.210.150.26:8787

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-R1T905
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 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1044 set thread context of 3316	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	84

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4620	Powershell.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4956	3316	WerFault.exe	84

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	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4620	Powershell.exe
4620	Powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4620	Powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1044 wrote to memory of 4620	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	81
PID 1044 wrote to memory of 4620	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	81
PID 1044 wrote to memory of 4620	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	81
PID 1044 wrote to memory of 3316	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	84
PID 1044 wrote to memory of 3316	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	84
PID 1044 wrote to memory of 3316	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	84
PID 1044 wrote to memory of 3316	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	84
PID 1044 wrote to memory of 3316	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	84
PID 1044 wrote to memory of 3316	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	84
PID 1044 wrote to memory of 3316	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	84
PID 1044 wrote to memory of 3316	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	84
PID 1044 wrote to memory of 3316	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	84
PID 1044 wrote to memory of 3316	1044	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	84

C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
"C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'
  2⤵
  - Drops startup file
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4620
- C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
  "C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe"
  2⤵
  PID:3316
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3316 -s 512
    3⤵
    - Program crash
    PID:4956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3316 -ip 3316
1⤵
PID:4356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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\Temp\__PSScriptPolicyTest_5ddcnvsu.vm3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1044-1-0x00000000002B0000-0x00000000003AC000-memory.dmp

Filesize
1008KB

Download
memory/1044-2-0x00000000052F0000-0x0000000005894000-memory.dmp

Filesize
5.6MB

Download
memory/1044-3-0x0000000004DE0000-0x0000000004E72000-memory.dmp

Filesize
584KB

Download
memory/1044-6-0x0000000005070000-0x000000000511E000-memory.dmp

Filesize
696KB

Download
memory/1044-5-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/1044-4-0x0000000004DC0000-0x0000000004DCA000-memory.dmp

Filesize
40KB

Download
memory/1044-7-0x00000000051C0000-0x000000000525C000-memory.dmp

Filesize
624KB

Download
memory/1044-47-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/1044-46-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/1044-0-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/1044-28-0x0000000004F10000-0x0000000004F18000-memory.dmp

Filesize
32KB

Download
memory/3316-34-0x0000000000740000-0x00000000007BF000-memory.dmp

Filesize
508KB

Download
memory/3316-38-0x0000000000740000-0x00000000007BF000-memory.dmp

Filesize
508KB

Download
memory/3316-30-0x0000000000740000-0x00000000007BF000-memory.dmp

Filesize
508KB

Download
memory/4620-11-0x00000000057C0000-0x0000000005DE8000-memory.dmp

Filesize
6.2MB

Download
memory/4620-12-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4620-25-0x0000000005F80000-0x00000000062D4000-memory.dmp

Filesize
3.3MB

Download
memory/4620-26-0x0000000006560000-0x000000000657E000-memory.dmp

Filesize
120KB

Download
memory/4620-27-0x00000000065B0000-0x00000000065FC000-memory.dmp

Filesize
304KB

Download
memory/4620-10-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4620-13-0x0000000005720000-0x0000000005742000-memory.dmp

Filesize
136KB

Download
memory/4620-14-0x0000000005EA0000-0x0000000005F06000-memory.dmp

Filesize
408KB

Download
memory/4620-15-0x0000000005F10000-0x0000000005F76000-memory.dmp

Filesize
408KB

Download
memory/4620-41-0x0000000006A90000-0x0000000006AB2000-memory.dmp

Filesize
136KB

Download
memory/4620-40-0x0000000006A40000-0x0000000006A5A000-memory.dmp

Filesize
104KB

Download
memory/4620-39-0x0000000007560000-0x00000000075F6000-memory.dmp

Filesize
600KB

Download
memory/4620-45-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4620-9-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4620-8-0x0000000002C40000-0x0000000002C76000-memory.dmp

Filesize
216KB

Download

Analysis

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