4444f1da7f9b30eb4fb593b9492e42745332402980e118b6a0431c7d1f5670ce

Analysis

max time kernel
146s
max time network
143s
platform
windows7_x64
resource
win7v200430
submitted
09-07-2020 00:36

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General

Target

remcos.exe
Size

649KB
MD5

c088802b03e3bc1ef0082f268847a5f7
SHA1

28fd21058e88cd0e77cc9da119c7b7ecd582e2ac
SHA256

4444f1da7f9b30eb4fb593b9492e42745332402980e118b6a0431c7d1f5670ce
SHA512

6f296335284aa8337a60df52ffae7f87eb29502cea0ab050e2429ad841f79cd757a3e75a75cfb32463458d646d92ead9476c99fa4d058113be02b903b99e0d6a

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

fodhelper.exefodhelper.exe

pid process

1316 fodhelper.exe
1384 fodhelper.exe

pid	process
1316	fodhelper.exe
1384	fodhelper.exe

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

remcos.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Vxmn = "C:\\Users\\Admin\\AppData\\Local\\Vxmn\\Vxmn.hta"	remcos.exe

Modifies registry key 1 TTPs 3 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exereg.exe

pid process

1852 reg.exe
1412 reg.exe
660 reg.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

pid	process
1852	reg.exe
1412	reg.exe
660	reg.exe

Suspicious use of WriteProcessMemory 537 IoCs

Processes:

remcos.exe

description	pid	process	target process
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe
PID 1100 wrote to memory of 1060	1100	remcos.exe	TapiUnattend.exe

C:\Users\Admin\AppData\Local\Temp\remcos.exe
"C:\Users\Admin\AppData\Local\Temp\remcos.exe"
1⤵
- Adds Run entry to start application
- Suspicious use of WriteProcessMemory
PID:1100

C:\Windows\SysWOW64\TapiUnattend.exe
"C:\Windows\System32\TapiUnattend.exe"
2⤵
PID:1060

C:\Windows\SysWOW64\cmd.exe
cmd /c C:\Users\Public\Natso.bat
3⤵
PID:1272

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
4⤵
- Modifies registry key
PID:1852

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:1412

C:\Windows\SysWOW64\schtasks.exe
schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
4⤵
PID:1660

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
4⤵
- Modifies registry key
PID:660

C:\Windows\SysWOW64\cmd.exe
cmd /c C:\Users\Public\Runex.bat
3⤵
PID:1532

C:\Windows \System32\fodhelper.exe
"C:\Windows \System32\fodhelper.exe"
4⤵
- Executes dropped EXE
PID:1316

C:\Windows \System32\fodhelper.exe
"C:\Windows \System32\fodhelper.exe"
4⤵
- Executes dropped EXE
PID:1384

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Program Files (x86)\internet explorer\ieinstal.exe"
2⤵
PID:1500

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Public\Natso.bat

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C:\Users\Public\Runex.bat

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C:\Users\Public\fodhelper.exe

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C:\Users\Public\propsys.dll

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C:\Windows \System32\fodhelper.exe

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

Download Submit
memory/660-136-0x0000000000000000-mapping.dmp

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memory/1060-69-0x0000000000000000-mapping.dmp

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memory/1060-31-0x0000000000000000-mapping.dmp

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memory/1060-8-0x0000000000000000-mapping.dmp

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memory/1060-9-0x0000000000000000-mapping.dmp

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memory/1060-10-0x0000000000000000-mapping.dmp

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memory/1060-11-0x0000000000000000-mapping.dmp

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memory/1060-12-0x0000000000000000-mapping.dmp

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memory/1060-13-0x0000000000000000-mapping.dmp

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memory/1060-14-0x0000000000000000-mapping.dmp

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memory/1060-15-0x0000000000000000-mapping.dmp

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memory/1060-16-0x0000000000000000-mapping.dmp

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memory/1060-17-0x0000000000000000-mapping.dmp

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memory/1060-18-0x0000000000000000-mapping.dmp

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memory/1060-19-0x0000000000000000-mapping.dmp

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memory/1060-20-0x0000000000000000-mapping.dmp

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memory/1060-21-0x0000000000000000-mapping.dmp

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memory/1060-22-0x0000000000000000-mapping.dmp

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memory/1060-23-0x0000000000000000-mapping.dmp

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memory/1060-24-0x0000000000000000-mapping.dmp

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memory/1060-25-0x0000000000000000-mapping.dmp

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memory/1060-26-0x0000000000000000-mapping.dmp

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memory/1060-27-0x0000000000000000-mapping.dmp

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memory/1060-28-0x0000000000000000-mapping.dmp

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memory/1060-29-0x0000000000000000-mapping.dmp

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memory/1060-30-0x0000000000000000-mapping.dmp

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memory/1060-73-0x0000000000000000-mapping.dmp

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memory/1060-32-0x0000000000000000-mapping.dmp

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memory/1060-33-0x0000000000000000-mapping.dmp

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memory/1060-34-0x0000000000000000-mapping.dmp

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memory/1060-35-0x0000000000000000-mapping.dmp

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memory/1060-36-0x0000000000000000-mapping.dmp

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memory/1060-37-0x0000000000000000-mapping.dmp

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memory/1060-38-0x0000000000000000-mapping.dmp

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memory/1060-39-0x0000000000000000-mapping.dmp

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memory/1060-40-0x0000000000000000-mapping.dmp

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memory/1060-41-0x0000000000000000-mapping.dmp

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memory/1060-42-0x0000000000000000-mapping.dmp

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memory/1060-43-0x0000000000000000-mapping.dmp

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memory/1060-44-0x0000000000000000-mapping.dmp

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memory/1060-45-0x0000000000000000-mapping.dmp

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memory/1060-46-0x0000000000000000-mapping.dmp

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memory/1060-47-0x0000000000000000-mapping.dmp

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memory/1060-48-0x0000000000000000-mapping.dmp

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memory/1060-49-0x0000000000000000-mapping.dmp

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memory/1060-50-0x0000000000000000-mapping.dmp

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memory/1060-51-0x0000000000000000-mapping.dmp

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memory/1060-52-0x0000000000000000-mapping.dmp

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memory/1060-53-0x0000000000000000-mapping.dmp

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memory/1060-54-0x0000000000000000-mapping.dmp

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memory/1060-55-0x0000000000000000-mapping.dmp

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memory/1060-56-0x0000000000000000-mapping.dmp

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memory/1060-57-0x0000000000000000-mapping.dmp

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memory/1060-58-0x0000000000000000-mapping.dmp

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memory/1060-59-0x0000000000000000-mapping.dmp

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memory/1060-60-0x0000000000000000-mapping.dmp

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memory/1060-61-0x0000000000000000-mapping.dmp

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memory/1060-62-0x0000000000000000-mapping.dmp

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memory/1060-63-0x0000000000000000-mapping.dmp

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memory/1060-64-0x0000000000000000-mapping.dmp

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memory/1060-65-0x0000000000000000-mapping.dmp

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memory/1060-66-0x0000000000000000-mapping.dmp

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memory/1060-67-0x0000000000000000-mapping.dmp

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memory/1060-68-0x0000000000000000-mapping.dmp

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memory/1060-6-0x0000000000000000-mapping.dmp

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memory/1060-70-0x0000000000000000-mapping.dmp

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memory/1060-71-0x0000000000000000-mapping.dmp

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memory/1060-118-0x0000000000000000-mapping.dmp

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memory/1060-7-0x0000000000000000-mapping.dmp

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memory/1060-107-0x0000000000000000-mapping.dmp

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memory/1060-75-0x0000000000000000-mapping.dmp

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memory/1060-76-0x0000000000000000-mapping.dmp

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memory/1060-77-0x0000000000000000-mapping.dmp

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memory/1060-78-0x0000000000000000-mapping.dmp

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memory/1060-79-0x0000000000000000-mapping.dmp

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memory/1060-80-0x0000000000000000-mapping.dmp

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memory/1060-81-0x0000000000000000-mapping.dmp

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memory/1060-82-0x0000000000000000-mapping.dmp

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memory/1060-83-0x0000000000000000-mapping.dmp

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memory/1060-84-0x0000000000000000-mapping.dmp

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memory/1060-85-0x0000000000000000-mapping.dmp

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memory/1060-86-0x0000000000000000-mapping.dmp

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memory/1060-87-0x0000000000000000-mapping.dmp

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memory/1060-88-0x0000000000000000-mapping.dmp

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memory/1060-89-0x0000000000000000-mapping.dmp

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memory/1060-90-0x0000000000000000-mapping.dmp

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memory/1060-91-0x0000000000000000-mapping.dmp

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memory/1060-92-0x0000000000000000-mapping.dmp

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memory/1060-93-0x0000000000000000-mapping.dmp

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memory/1060-94-0x0000000000000000-mapping.dmp

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memory/1060-95-0x0000000000000000-mapping.dmp

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memory/1060-96-0x0000000000000000-mapping.dmp

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memory/1060-97-0x0000000000000000-mapping.dmp

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memory/1060-98-0x0000000000000000-mapping.dmp

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memory/1060-99-0x0000000000000000-mapping.dmp

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memory/1060-100-0x0000000000000000-mapping.dmp

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memory/1060-101-0x0000000000000000-mapping.dmp

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memory/1060-102-0x0000000000000000-mapping.dmp

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memory/1060-103-0x0000000000000000-mapping.dmp

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memory/1060-104-0x0000000000000000-mapping.dmp

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memory/1060-105-0x0000000000000000-mapping.dmp

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memory/1060-106-0x0000000000000000-mapping.dmp

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memory/1060-74-0x0000000000000000-mapping.dmp

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memory/1060-108-0x0000000000000000-mapping.dmp

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memory/1060-109-0x0000000000000000-mapping.dmp

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memory/1060-110-0x0000000000000000-mapping.dmp

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memory/1060-111-0x0000000000000000-mapping.dmp

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memory/1060-112-0x0000000000000000-mapping.dmp

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memory/1060-113-0x0000000000000000-mapping.dmp

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memory/1060-114-0x0000000000000000-mapping.dmp

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memory/1060-115-0x0000000000000000-mapping.dmp

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memory/1060-116-0x0000000000000000-mapping.dmp

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memory/1060-117-0x0000000000000000-mapping.dmp

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memory/1060-72-0x0000000000000000-mapping.dmp

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memory/1060-119-0x0000000000000000-mapping.dmp

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memory/1060-120-0x0000000000000000-mapping.dmp

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memory/1060-121-0x0000000000000000-mapping.dmp

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memory/1060-122-0x0000000000000000-mapping.dmp

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memory/1060-123-0x0000000000000000-mapping.dmp

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memory/1060-125-0x0000000000000000-mapping.dmp

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memory/1060-0-0x0000000000000000-mapping.dmp

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memory/1060-1-0x0000000000000000-mapping.dmp

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memory/1060-2-0x0000000000000000-mapping.dmp

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memory/1060-3-0x0000000000000000-mapping.dmp

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memory/1060-4-0x0000000000000000-mapping.dmp

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memory/1060-5-0x0000000000000000-mapping.dmp

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memory/1100-130-0x0000000010530000-0x000000001054A000-memory.dmp

Filesize
104KB

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memory/1100-124-0x0000000010410000-0x0000000010450000-memory.dmp

Filesize
256KB

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memory/1272-128-0x0000000000000000-mapping.dmp

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memory/1412-134-0x0000000000000000-mapping.dmp

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memory/1500-129-0x0000000000000000-mapping.dmp

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memory/1500-131-0x0000000000000000-mapping.dmp

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memory/1500-127-0x0000000000000000-mapping.dmp

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memory/1500-126-0x0000000000000000-mapping.dmp

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memory/1532-137-0x0000000000000000-mapping.dmp

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memory/1660-135-0x0000000000000000-mapping.dmp

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memory/1852-133-0x0000000000000000-mapping.dmp

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