remcos | 8f5fae18ffc61f2ecf76d797ea904341337c3bc7385fbe8e505cebd1ac813b90

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20220414-en
submitted
20/05/2022, 06:07

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2033987c1b1a62b5c6e4fe2ffe1960b6.exe
Size 492KB
Sample220520-gva6msdda2
SHA256 8f5fae18ffc61f2ecf76d797ea904341337c3bc7385fbe8e505cebd1ac813b90
MD5 2033987c1b1a62b5c6e4fe2ffe1960b6
SHA1 b798f1fb55df9d7373f1afa55032dbe9d513b7a2
SHA512 6c124237a257ed652436462728689f6722775401e2e467e7f46d20e0538fb7656374b51c03f79179ec51d0e7bfaa9b0a542297a4b80c7ee997e639cbcbbefd06
MD5 SHA1 SHA512

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

skygroupt6.zapto.org:2080

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
ios.exe
copy_folder
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-FL7CBT
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Re
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1128	ios.exe

Loads dropped DLL 2 IoCs

pid	Process
1720	cmd.exe
1720	cmd.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\Re = "\"C:\\Users\\Admin\\AppData\\Roaming\\ios.exe\""	ios.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\	2033987c1b1a62b5c6e4fe2ffe1960b6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\Re = "\"C:\\Users\\Admin\\AppData\\Roaming\\ios.exe\""	2033987c1b1a62b5c6e4fe2ffe1960b6.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\	ios.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1128	ios.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 1936	2008	2033987c1b1a62b5c6e4fe2ffe1960b6.exe	27
PID 2008 wrote to memory of 1936	2008	2033987c1b1a62b5c6e4fe2ffe1960b6.exe	27
PID 2008 wrote to memory of 1936	2008	2033987c1b1a62b5c6e4fe2ffe1960b6.exe	27
PID 2008 wrote to memory of 1936	2008	2033987c1b1a62b5c6e4fe2ffe1960b6.exe	27
PID 1936 wrote to memory of 1720	1936	WScript.exe	28
PID 1936 wrote to memory of 1720	1936	WScript.exe	28
PID 1936 wrote to memory of 1720	1936	WScript.exe	28
PID 1936 wrote to memory of 1720	1936	WScript.exe	28
PID 1720 wrote to memory of 1128	1720	cmd.exe	30
PID 1720 wrote to memory of 1128	1720	cmd.exe	30
PID 1720 wrote to memory of 1128	1720	cmd.exe	30
PID 1720 wrote to memory of 1128	1720	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\2033987c1b1a62b5c6e4fe2ffe1960b6.exe
"C:\Users\Admin\AppData\Local\Temp\2033987c1b1a62b5c6e4fe2ffe1960b6.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1936
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\ios.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:1720
  - - C:\Users\Admin\AppData\Roaming\ios.exe
      C:\Users\Admin\AppData\Roaming\ios.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetWindowsHookEx
      PID:1128

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

install.vbs

Path C:\Users\Admin\AppData\Local\Temp\install.vbs
Size 398B
SHA256 d90d18f6929159680ab3b424e1edf0e3a43f312f4291fc9f80fb78460d2e04f6
MD5 bba8d44c990bd0bb75d50716749cb6c0
SHA1 12ba25b7f6f7b6225fe5cd1ddcba07839a90cc00
SHA512 994701552561b7bf48cdb36ee1430e13a193c6283e3a7c00e096938f5efad58bb35dcc7607634973a9d42485c69ca8eaa68a7ff9093513be0b7d6c3afd942de2
MD5 SHA1 SHA512

Submit Download

ios.exe

Path C:\Users\Admin\AppData\Roaming\ios.exe
Size 492KB
SHA256 8f5fae18ffc61f2ecf76d797ea904341337c3bc7385fbe8e505cebd1ac813b90
MD5 2033987c1b1a62b5c6e4fe2ffe1960b6
SHA1 b798f1fb55df9d7373f1afa55032dbe9d513b7a2
SHA512 6c124237a257ed652436462728689f6722775401e2e467e7f46d20e0538fb7656374b51c03f79179ec51d0e7bfaa9b0a542297a4b80c7ee997e639cbcbbefd06
SSDEEP 12288:UWz2OiRwt/ONdw7p0gk56xbMhsMX1KeVPM7L5V:FaReZOT26h56xbMhNlKeWf
MD5 SHA1 SHA512 SSDEEP

Submit Download

ios.exe

Path C:\Users\Admin\AppData\Roaming\ios.exe
Size 492KB
SHA256 8f5fae18ffc61f2ecf76d797ea904341337c3bc7385fbe8e505cebd1ac813b90
MD5 2033987c1b1a62b5c6e4fe2ffe1960b6
SHA1 b798f1fb55df9d7373f1afa55032dbe9d513b7a2
SHA512 6c124237a257ed652436462728689f6722775401e2e467e7f46d20e0538fb7656374b51c03f79179ec51d0e7bfaa9b0a542297a4b80c7ee997e639cbcbbefd06
SSDEEP 12288:UWz2OiRwt/ONdw7p0gk56xbMhsMX1KeVPM7L5V:FaReZOT26h56xbMhNlKeWf
MD5 SHA1 SHA512 SSDEEP

Submit Download

ios.exe

Path \Users\Admin\AppData\Roaming\ios.exe
Size 492KB
SHA256 8f5fae18ffc61f2ecf76d797ea904341337c3bc7385fbe8e505cebd1ac813b90
MD5 2033987c1b1a62b5c6e4fe2ffe1960b6
SHA1 b798f1fb55df9d7373f1afa55032dbe9d513b7a2
SHA512 6c124237a257ed652436462728689f6722775401e2e467e7f46d20e0538fb7656374b51c03f79179ec51d0e7bfaa9b0a542297a4b80c7ee997e639cbcbbefd06
SSDEEP 12288:UWz2OiRwt/ONdw7p0gk56xbMhsMX1KeVPM7L5V:FaReZOT26h56xbMhNlKeWf
MD5 SHA1 SHA512 SSDEEP

Submit Download

ios.exe

Path \Users\Admin\AppData\Roaming\ios.exe
Size 492KB
SHA256 8f5fae18ffc61f2ecf76d797ea904341337c3bc7385fbe8e505cebd1ac813b90
MD5 2033987c1b1a62b5c6e4fe2ffe1960b6
SHA1 b798f1fb55df9d7373f1afa55032dbe9d513b7a2
SHA512 6c124237a257ed652436462728689f6722775401e2e467e7f46d20e0538fb7656374b51c03f79179ec51d0e7bfaa9b0a542297a4b80c7ee997e639cbcbbefd06
SSDEEP 12288:UWz2OiRwt/ONdw7p0gk56xbMhsMX1KeVPM7L5V:FaReZOT26h56xbMhNlKeWf
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1128-68-0x0000000000608000-0x000000000064D000-memory.dmp

Download

memory/1128-70-0x0000000000608000-0x000000000064D000-memory.dmp

Download

memory/1128-71-0x0000000000400000-0x00000000004BC000-memory.dmp

Download

memory/2008-54-0x0000000000618000-0x000000000065D000-memory.dmp

Download

memory/2008-58-0x0000000000400000-0x00000000004BC000-memory.dmp

Download

memory/2008-57-0x0000000000220000-0x0000000000295000-memory.dmp

Download

memory/2008-56-0x0000000000618000-0x000000000065D000-memory.dmp

Download

memory/2008-55-0x0000000076191000-0x0000000076193000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads