remcos | 7ae01f6bce5549321cb64da949f88142e6b9f7ed8a8121cdba3e8aa205f586be

Analysis

max time kernel
150s
max time network
153s
platform
windows10_x64
resource
win10-en-20210920
submitted
02/10/2021, 06:59

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General

Target
DHL_119040 documento de recebimento,pdf.exe
Size 829KB
Sample211002-hr4jfsdhc9
SHA256 7ae01f6bce5549321cb64da949f88142e6b9f7ed8a8121cdba3e8aa205f586be
MD5 9b44c6643ea1df230bc9265db2544110
SHA1 8c15af2fa45fd9cf000f2a45f5fe2a56f10a823e
SHA512 ba8460b51827819f87f5fe834cfeb522addf9ca4ff7d49e78bdc521e961a58fef84b8870366705a9b86d81c244d7b0dc38257478e7eab32643ff020197907482
MD5 SHA1 SHA512

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Version

3.2.1 Pro

Botnet

RemoteHost

ongod4life.ddns.net:4336

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-UHUWMR
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Dkhrwem = "C:\\Users\\Public\\Libraries\\mewrhkD.url"	DHL_119040 documento de recebimento,pdf.exe

Modifies registry key 1 TTPs 3 IoCs

Modify Registry

T1112

pid	Process
1264	reg.exe
656	reg.exe
3500	reg.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 2704	2056	DHL_119040 documento de recebimento,pdf.exe	70
PID 2056 wrote to memory of 3476	2056	DHL_119040 documento de recebimento,pdf.exe	71
PID 2056 wrote to memory of 3476	2056	DHL_119040 documento de recebimento,pdf.exe	71
PID 2056 wrote to memory of 3476	2056	DHL_119040 documento de recebimento,pdf.exe	71
PID 3476 wrote to memory of 2608	3476	cmd.exe	73
PID 3476 wrote to memory of 2608	3476	cmd.exe	73
PID 3476 wrote to memory of 2608	3476	cmd.exe	73
PID 2608 wrote to memory of 1264	2608	cmd.exe	75
PID 2608 wrote to memory of 1264	2608	cmd.exe	75
PID 2608 wrote to memory of 1264	2608	cmd.exe	75
PID 2608 wrote to memory of 656	2608	cmd.exe	76
PID 2608 wrote to memory of 656	2608	cmd.exe	76
PID 2608 wrote to memory of 656	2608	cmd.exe	76
PID 2608 wrote to memory of 864	2608	cmd.exe	77
PID 2608 wrote to memory of 864	2608	cmd.exe	77
PID 2608 wrote to memory of 864	2608	cmd.exe	77
PID 2056 wrote to memory of 1120	2056	DHL_119040 documento de recebimento,pdf.exe	78
PID 2056 wrote to memory of 1120	2056	DHL_119040 documento de recebimento,pdf.exe	78
PID 2056 wrote to memory of 1120	2056	DHL_119040 documento de recebimento,pdf.exe	78
PID 1120 wrote to memory of 3500	1120	cmd.exe	80
PID 1120 wrote to memory of 3500	1120	cmd.exe	80
PID 1120 wrote to memory of 3500	1120	cmd.exe	80

C:\Users\Admin\AppData\Local\Temp\DHL_119040 documento de recebimento,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\DHL_119040 documento de recebimento,pdf.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2056
- C:\Windows\SysWOW64\logagent.exe
  C:\Windows\System32\logagent.exe
  2⤵
  PID:2704
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Trast.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3476
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /K C:\Users\Public\UKO.bat
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2608
  - - C:\Windows\SysWOW64\reg.exe
      reg delete hkcu\Environment /v windir /f
      4⤵
      Modifies registry key
      PID:1264
  - - C:\Windows\SysWOW64\reg.exe
      reg add hkcu\Environment /v windir /d "cmd /c start /min C:\Users\Public\KDECO.bat reg delete hkcu\Environment /v windir /f && REM "
      4⤵
      Modifies registry key
      PID:656
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
      4⤵
      PID:864
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\nest.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1120
- - C:\Windows\SysWOW64\reg.exe
    reg delete hkcu\Environment /v windir /f
    3⤵
    - Modifies registry key
    PID:3500

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2056-115-0x0000000002240000-0x0000000002241000-memory.dmp

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memory/2704-125-0x00000000032B0000-0x00000000032B1000-memory.dmp

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memory/2704-126-0x0000000003370000-0x0000000003371000-memory.dmp

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memory/2704-127-0x0000000003310000-0x0000000003311000-memory.dmp

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memory/2704-128-0x0000000072600000-0x000000007267C000-memory.dmp

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memory/2704-129-0x0000000000400000-0x0000000000479000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads