remcos | 8e521953f01b56f163a5d7ca777cdbef86f1d9291bf994d3ba35cb0e89729da0

General

Target

8e521953f01b56f163a5d7ca777cdbef86f1d9291bf994d3ba35cb0e89729da0.dll
Size

15.1MB
MD5

6d5a39ffb948ce7ff8744e302201f711
SHA1

af806feeb69690f4963eaa146c1debb67a45895d
SHA256

8e521953f01b56f163a5d7ca777cdbef86f1d9291bf994d3ba35cb0e89729da0
SHA512

bc2869463865c220800279cd4973633daeda05484fcf172ac4c5750eb7e215b88dffa195e51aafdf4193a5f5d182859966d70d1e1fcd3b6bd6a3f5d0663f0b00
SSDEEP

196608:i0ivGTAslgbSYBsnBho/wnBvq+4rMOblxz6qYFS1qY2aubxi58/EUxFFVsmN:izvfaEog+4rdbUTFVRN

Score

10^/10

remcos zuma discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

zuma

C2

goatratedman.com:4050

extendedbreakfast.com:5140

Attributes

audio_folder
MicRecords
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
bghtyi-ILS8CA
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\*Chrome = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\VIVA_01.dll,EntryPoint"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4744 set thread context of 3084	4744	regsvr32.exe	97

System Location Discovery: System Language Discovery 1 TTPs 4 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4748 wrote to memory of 4744	4748	regsvr32.exe	84
PID 4748 wrote to memory of 4744	4748	regsvr32.exe	84
PID 4748 wrote to memory of 4744	4748	regsvr32.exe	84
PID 4744 wrote to memory of 3180	4744	regsvr32.exe	96
PID 4744 wrote to memory of 3180	4744	regsvr32.exe	96
PID 4744 wrote to memory of 3180	4744	regsvr32.exe	96
PID 4744 wrote to memory of 3084	4744	regsvr32.exe	97
PID 4744 wrote to memory of 3084	4744	regsvr32.exe	97
PID 4744 wrote to memory of 3084	4744	regsvr32.exe	97
PID 4744 wrote to memory of 3084	4744	regsvr32.exe	97
PID 4744 wrote to memory of 3084	4744	regsvr32.exe	97
PID 3180 wrote to memory of 3168	3180	cmd.exe	100
PID 3180 wrote to memory of 3168	3180	cmd.exe	100
PID 3180 wrote to memory of 3168	3180	cmd.exe	100

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\8e521953f01b56f163a5d7ca777cdbef86f1d9291bf994d3ba35cb0e89729da0.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4748
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\8e521953f01b56f163a5d7ca777cdbef86f1d9291bf994d3ba35cb0e89729da0.dll
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4744
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*Chrome" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\VIVA_01.dll",EntryPoint /f & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3180
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*Chrome" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\VIVA_01.dll",EntryPoint /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:3168
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\SysWOW64\regsvr32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3084-13-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-9-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-24-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-23-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-5-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-4-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-12-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-8-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-6-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-22-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-21-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-20-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-17-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-14-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-15-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-16-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-19-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/3084-18-0x0000000000B50000-0x0000000000BD2000-memory.dmp

Filesize
520KB

Download
memory/4744-1-0x0000000010014000-0x000000001002D000-memory.dmp

Filesize
100KB

Download
memory/4744-10-0x0000000010000000-0x0000000010F90000-memory.dmp

Filesize
15.6MB

Download
memory/4744-0-0x0000000010000000-0x0000000010F90000-memory.dmp

Filesize
15.6MB

Download
memory/4744-11-0x0000000010000000-0x0000000010F90000-memory.dmp

Filesize
15.6MB

Download
memory/4744-3-0x0000000010000000-0x0000000010F90000-memory.dmp

Filesize
15.6MB

Download
memory/4744-2-0x0000000010000000-0x0000000010F90000-memory.dmp

Filesize
15.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads