remcos | 31ccfd52379f73629cf34d1e2864648befed8f571785811c1936919f36b807c0

Analysis

max time kernel
145s
max time network
153s
platform
windows7_x64
resource
win7-en-20210920
submitted
29/10/2021, 05:06

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General

Target
AWB # 2617429350,pdf.exe
Size 1005KB
Sample211029-fre5rahcfr
SHA256 31ccfd52379f73629cf34d1e2864648befed8f571785811c1936919f36b807c0
MD5 733471b2013ebbf7699a4580eefbc40f
SHA1 5a8c99eed0183b106abb96a7229eb6cec7a0ca65
SHA512 e94a9807fdd9d9a0e9ad4912f49f55ceb556fa59946cfbb9e5ecc02715583e953b3c3052378bfee9da89c3b0457d9621b45c5cbe0c9a427170844b79b377976b
MD5 SHA1 SHA512

Score

10^/10

remcos zion persistence rat

Malware Config

Extracted

Family

remcos

Version

3.3.0 Pro

Botnet

ZION

tattonmurpy6.ddns.net:1720

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-EREPJP
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-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\Jradgv = "C:\\Users\\Public\\Libraries\\\\vgdarJ.url"	AWB # 2617429350,pdf.exe

Modifies registry key 1 TTPs 3 IoCs

Modify Registry

T1112

pid	Process
1896	reg.exe
1724	reg.exe
1524	reg.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1048	1328	AWB # 2617429350,pdf.exe	30
PID 1328 wrote to memory of 1148	1328	AWB # 2617429350,pdf.exe	31
PID 1328 wrote to memory of 1148	1328	AWB # 2617429350,pdf.exe	31
PID 1328 wrote to memory of 1148	1328	AWB # 2617429350,pdf.exe	31
PID 1328 wrote to memory of 1148	1328	AWB # 2617429350,pdf.exe	31
PID 1148 wrote to memory of 1984	1148	cmd.exe	33
PID 1148 wrote to memory of 1984	1148	cmd.exe	33
PID 1148 wrote to memory of 1984	1148	cmd.exe	33
PID 1148 wrote to memory of 1984	1148	cmd.exe	33
PID 1984 wrote to memory of 1896	1984	cmd.exe	35
PID 1984 wrote to memory of 1896	1984	cmd.exe	35
PID 1984 wrote to memory of 1896	1984	cmd.exe	35
PID 1984 wrote to memory of 1896	1984	cmd.exe	35
PID 1984 wrote to memory of 1724	1984	cmd.exe	36
PID 1984 wrote to memory of 1724	1984	cmd.exe	36
PID 1984 wrote to memory of 1724	1984	cmd.exe	36
PID 1984 wrote to memory of 1724	1984	cmd.exe	36
PID 1984 wrote to memory of 592	1984	cmd.exe	37
PID 1984 wrote to memory of 592	1984	cmd.exe	37
PID 1984 wrote to memory of 592	1984	cmd.exe	37
PID 1984 wrote to memory of 592	1984	cmd.exe	37
PID 1328 wrote to memory of 596	1328	AWB # 2617429350,pdf.exe	38
PID 1328 wrote to memory of 596	1328	AWB # 2617429350,pdf.exe	38
PID 1328 wrote to memory of 596	1328	AWB # 2617429350,pdf.exe	38
PID 1328 wrote to memory of 596	1328	AWB # 2617429350,pdf.exe	38
PID 596 wrote to memory of 1524	596	cmd.exe	40
PID 596 wrote to memory of 1524	596	cmd.exe	40
PID 596 wrote to memory of 1524	596	cmd.exe	40
PID 596 wrote to memory of 1524	596	cmd.exe	40

C:\Users\Admin\AppData\Local\Temp\AWB # 2617429350,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\AWB # 2617429350,pdf.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1328
- C:\Windows\SysWOW64\mobsync.exe
  C:\Windows\System32\mobsync.exe
  2⤵
  PID:1048
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Public\Trast.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1148
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /K C:\Users\Public\UKO.bat
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1984
  - - C:\Windows\SysWOW64\reg.exe
      reg delete hkcu\Environment /v windir /f
      4⤵
      Modifies registry key
      PID:1896
  - - 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:1724
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
      4⤵
      PID:592
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Public\nest.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:596
- - C:\Windows\SysWOW64\reg.exe
    reg delete hkcu\Environment /v windir /f
    3⤵
    - Modifies registry key
    PID:1524

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/1048-76-0x0000000000200000-0x0000000000279000-memory.dmp

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memory/1048-68-0x0000000072600000-0x000000007267C000-memory.dmp

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memory/1048-71-0x0000000000080000-0x0000000000081000-memory.dmp

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memory/1048-75-0x0000000072600000-0x000000007267C000-memory.dmp

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memory/1048-57-0x0000000000080000-0x0000000000081000-memory.dmp

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memory/1048-74-0x0000000000170000-0x0000000000171000-memory.dmp

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memory/1048-72-0x0000000000020000-0x0000000000021000-memory.dmp

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memory/1328-54-0x00000000765A1000-0x00000000765A3000-memory.dmp

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memory/1328-56-0x00000000005A1000-0x00000000005B5000-memory.dmp

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memory/1328-55-0x0000000000230000-0x0000000000231000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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