remcos | db4bb50f2327328901cc6fff050acb653a059dc905917dcefedccbd8154c13ce

Analysis

max time kernel
141s
max time network
144s
platform
windows7_x64
resource
win7
submitted
07-07-2020 06:03

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General

Target

c27cad4a8a936c75f677d0a14fd58590.exe
Size

1.2MB
MD5

c27cad4a8a936c75f677d0a14fd58590
SHA1

1f4614b6d5553af0ea857a907885048808cc8e48
SHA256

db4bb50f2327328901cc6fff050acb653a059dc905917dcefedccbd8154c13ce
SHA512

b094e2ca78b25bd9c4eec4f4bf30e767db9d52c9ff6b7f54f3014988ac3d9cc89df86fd1d4dd2eeac1bd75d2fba91df79fb6a7d63ffe405ea1864805ffdd7e13

Score

10^/10

rat remcos persistence

Malware Config

Extracted

Family

remcos

karimgoussd.ug:6969

fgdjhksdfsdxcbv.ru:6969

Signatures

Modifies registry key 1 TTPs 3 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exereg.exe

pid process

2608 reg.exe
2704 reg.exe
2568 reg.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

pid	process
2608	reg.exe
2704	reg.exe
2568	reg.exe

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

c27cad4a8a936c75f677d0a14fd58590.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Yyej = "C:\\Users\\Admin\\AppData\\Local\\Yyej\\Yyej.hta"	c27cad4a8a936c75f677d0a14fd58590.exe

Suspicious use of WriteProcessMemory 527 IoCs

Processes:

c27cad4a8a936c75f677d0a14fd58590.exe

description	pid	process	target process
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe
PID 1156 wrote to memory of 1176	1156	c27cad4a8a936c75f677d0a14fd58590.exe	TapiUnattend.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

c27cad4a8a936c75f677d0a14fd58590.exe

description pid process target process

PID 1156 set thread context of 2544 1156 c27cad4a8a936c75f677d0a14fd58590.exe ieinstal.exe
Executes dropped EXE 2 IoCs

Processes:

fodhelper.exefodhelper.exe

pid process

2864 fodhelper.exe
2884 fodhelper.exe

description	pid	process	target process
PID 1156 set thread context of 2544	1156	c27cad4a8a936c75f677d0a14fd58590.exe	ieinstal.exe

pid	process
2864	fodhelper.exe
2884	fodhelper.exe

C:\Users\Admin\AppData\Local\Temp\c27cad4a8a936c75f677d0a14fd58590.exe
"C:\Users\Admin\AppData\Local\Temp\c27cad4a8a936c75f677d0a14fd58590.exe"
1⤵
- Adds Run entry to start application
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:1156

C:\Windows\SysWOW64\TapiUnattend.exe
"C:\Windows\System32\TapiUnattend.exe"
2⤵
PID:1176

C:\Windows\SysWOW64\cmd.exe
cmd /c C:\Users\Public\Natso.bat
3⤵
PID:2524

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
4⤵
- Modifies registry key
PID:2568

C:\Windows\SysWOW64\reg.exe
reg add hkcu\Environment /v windir /d "cmd /c start /min C:\Users\Public\x.bat reg delete hkcu\Environment /v windir /f && REM "
4⤵
- Modifies registry key
PID:2608

C:\Windows\SysWOW64\schtasks.exe
schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
4⤵
PID:2664

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
4⤵
- Modifies registry key
PID:2704

C:\Windows\SysWOW64\cmd.exe
cmd /c C:\Users\Public\Runex.bat
3⤵
PID:2824

C:\Windows \System32\fodhelper.exe
"C:\Windows \System32\fodhelper.exe"
4⤵
- Executes dropped EXE
PID:2864

C:\Windows \System32\fodhelper.exe
"C:\Windows \System32\fodhelper.exe"
4⤵
- Executes dropped EXE
PID:2884

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Program Files (x86)\internet explorer\ieinstal.exe"
2⤵
PID:2544

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

Replay Monitor

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Downloads

C:\Users\Public\Natso.bat

Download Submit
C:\Users\Public\Runex.bat

Download Submit
C:\Users\Public\fodhelper.exe

Download Submit
C:\Users\Public\propsys.dll

Download Submit
C:\Windows \System32\fodhelper.exe

Download Submit
C:\Windows \System32\fodhelper.exe

Download Submit
memory/1156-124-0x0000000010410000-0x0000000010450000-memory.dmp

Filesize
256KB

Download
memory/1176-66-0x0000000000000000-mapping.dmp

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memory/1176-28-0x0000000000000000-mapping.dmp

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memory/1176-5-0x0000000000000000-mapping.dmp

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memory/1176-6-0x0000000000000000-mapping.dmp

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memory/1176-7-0x0000000000000000-mapping.dmp

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memory/1176-8-0x0000000000000000-mapping.dmp

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memory/1176-9-0x0000000000000000-mapping.dmp

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memory/1176-10-0x0000000000000000-mapping.dmp

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memory/1176-11-0x0000000000000000-mapping.dmp

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memory/1176-12-0x0000000000000000-mapping.dmp

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memory/1176-13-0x0000000000000000-mapping.dmp

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memory/1176-14-0x0000000000000000-mapping.dmp

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memory/1176-15-0x0000000000000000-mapping.dmp

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memory/1176-16-0x0000000000000000-mapping.dmp

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memory/1176-17-0x0000000000000000-mapping.dmp

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memory/1176-18-0x0000000000000000-mapping.dmp

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memory/1176-19-0x0000000000000000-mapping.dmp

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memory/1176-20-0x0000000000000000-mapping.dmp

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memory/1176-21-0x0000000000000000-mapping.dmp

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memory/1176-22-0x0000000000000000-mapping.dmp

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memory/1176-23-0x0000000000000000-mapping.dmp

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memory/1176-24-0x0000000000000000-mapping.dmp

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memory/1176-25-0x0000000000000000-mapping.dmp

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memory/1176-26-0x0000000000000000-mapping.dmp

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memory/1176-27-0x0000000000000000-mapping.dmp

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memory/1176-70-0x0000000000000000-mapping.dmp

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memory/1176-29-0x0000000000000000-mapping.dmp

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memory/1176-30-0x0000000000000000-mapping.dmp

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memory/1176-31-0x0000000000000000-mapping.dmp

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memory/1176-32-0x0000000000000000-mapping.dmp

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memory/1176-33-0x0000000000000000-mapping.dmp

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memory/1176-34-0x0000000000000000-mapping.dmp

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memory/1176-35-0x0000000000000000-mapping.dmp

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memory/1176-36-0x0000000000000000-mapping.dmp

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memory/1176-37-0x0000000000000000-mapping.dmp

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memory/1176-38-0x0000000000000000-mapping.dmp

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memory/1176-39-0x0000000000000000-mapping.dmp

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memory/1176-40-0x0000000000000000-mapping.dmp

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memory/1176-41-0x0000000000000000-mapping.dmp

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memory/1176-42-0x0000000000000000-mapping.dmp

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memory/1176-43-0x0000000000000000-mapping.dmp

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memory/1176-44-0x0000000000000000-mapping.dmp

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memory/1176-45-0x0000000000000000-mapping.dmp

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memory/1176-46-0x0000000000000000-mapping.dmp

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memory/1176-47-0x0000000000000000-mapping.dmp

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memory/1176-48-0x0000000000000000-mapping.dmp

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memory/1176-69-0x0000000000000000-mapping.dmp

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memory/1176-50-0x0000000000000000-mapping.dmp

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memory/1176-51-0x0000000000000000-mapping.dmp

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memory/1176-52-0x0000000000000000-mapping.dmp

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memory/1176-53-0x0000000000000000-mapping.dmp

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memory/1176-54-0x0000000000000000-mapping.dmp

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memory/1176-55-0x0000000000000000-mapping.dmp

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memory/1176-56-0x0000000000000000-mapping.dmp

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memory/1176-57-0x0000000000000000-mapping.dmp

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memory/1176-58-0x0000000000000000-mapping.dmp

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memory/1176-59-0x0000000000000000-mapping.dmp

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memory/1176-60-0x0000000000000000-mapping.dmp

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memory/1176-61-0x0000000000000000-mapping.dmp

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memory/1176-62-0x0000000000000000-mapping.dmp

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memory/1176-63-0x0000000000000000-mapping.dmp

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memory/1176-64-0x0000000000000000-mapping.dmp

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memory/1176-65-0x0000000000000000-mapping.dmp

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memory/1176-3-0x0000000000000000-mapping.dmp

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memory/1176-67-0x0000000000000000-mapping.dmp

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memory/1176-68-0x0000000000000000-mapping.dmp

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memory/1176-49-0x0000000000000000-mapping.dmp

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memory/1176-4-0x0000000000000000-mapping.dmp

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memory/1176-101-0x0000000000000000-mapping.dmp

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memory/1176-72-0x0000000000000000-mapping.dmp

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memory/1176-73-0x0000000000000000-mapping.dmp

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memory/1176-74-0x0000000000000000-mapping.dmp

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memory/1176-75-0x0000000000000000-mapping.dmp

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memory/1176-76-0x0000000000000000-mapping.dmp

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memory/1176-77-0x0000000000000000-mapping.dmp

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memory/1176-78-0x0000000000000000-mapping.dmp

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memory/1176-79-0x0000000000000000-mapping.dmp

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memory/1176-80-0x0000000000000000-mapping.dmp

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memory/1176-81-0x0000000000000000-mapping.dmp

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memory/1176-82-0x0000000000000000-mapping.dmp

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memory/1176-83-0x0000000000000000-mapping.dmp

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memory/1176-84-0x0000000000000000-mapping.dmp

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memory/1176-85-0x0000000000000000-mapping.dmp

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memory/1176-86-0x0000000000000000-mapping.dmp

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memory/1176-87-0x0000000000000000-mapping.dmp

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memory/1176-88-0x0000000000000000-mapping.dmp

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memory/1176-89-0x0000000000000000-mapping.dmp

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memory/1176-90-0x0000000000000000-mapping.dmp

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memory/1176-91-0x0000000000000000-mapping.dmp

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memory/1176-92-0x0000000000000000-mapping.dmp

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memory/1176-93-0x0000000000000000-mapping.dmp

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memory/1176-94-0x0000000000000000-mapping.dmp

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memory/1176-95-0x0000000000000000-mapping.dmp

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memory/1176-96-0x0000000000000000-mapping.dmp

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memory/1176-97-0x0000000000000000-mapping.dmp

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memory/1176-98-0x0000000000000000-mapping.dmp

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memory/1176-99-0x0000000000000000-mapping.dmp

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memory/1176-100-0x0000000000000000-mapping.dmp

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memory/1176-71-0x0000000000000000-mapping.dmp

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memory/1176-102-0x0000000000000000-mapping.dmp

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memory/1176-103-0x0000000000000000-mapping.dmp

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memory/1176-104-0x0000000000000000-mapping.dmp

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memory/1176-105-0x0000000000000000-mapping.dmp

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memory/1176-106-0x0000000000000000-mapping.dmp

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memory/1176-107-0x0000000000000000-mapping.dmp

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memory/1176-108-0x0000000000000000-mapping.dmp

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memory/1176-109-0x0000000000000000-mapping.dmp

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memory/1176-110-0x0000000000000000-mapping.dmp

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memory/1176-111-0x0000000000000000-mapping.dmp

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memory/1176-112-0x0000000000000000-mapping.dmp

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memory/1176-113-0x0000000000000000-mapping.dmp

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memory/1176-114-0x0000000000000000-mapping.dmp

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memory/1176-115-0x0000000000000000-mapping.dmp

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memory/1176-116-0x0000000000000000-mapping.dmp

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memory/1176-117-0x0000000000000000-mapping.dmp

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memory/1176-118-0x0000000000000000-mapping.dmp

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memory/1176-119-0x0000000000000000-mapping.dmp

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memory/1176-120-0x0000000000000000-mapping.dmp

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memory/1176-121-0x0000000000000000-mapping.dmp

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memory/1176-122-0x0000000000000000-mapping.dmp

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memory/1176-123-0x0000000000000000-mapping.dmp

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memory/1176-125-0x0000000000000000-mapping.dmp

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memory/1176-0-0x0000000000000000-mapping.dmp

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memory/1176-1-0x0000000000000000-mapping.dmp

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memory/1176-2-0x0000000000000000-mapping.dmp

Download
memory/2524-126-0x0000000000000000-mapping.dmp

Download
memory/2544-131-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2544-129-0x000000000040D7D4-mapping.dmp

Download
memory/2544-128-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2568-130-0x0000000000000000-mapping.dmp

Download
memory/2608-132-0x0000000000000000-mapping.dmp

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memory/2664-133-0x0000000000000000-mapping.dmp

Download
memory/2704-134-0x0000000000000000-mapping.dmp

Download
memory/2824-135-0x0000000000000000-mapping.dmp

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