remcos | 96b2da5b493ac29bb08e8045157cd8b2643dcfa4a937f7eced5a276b8f8a6b67

Analysis

max time kernel
150s
max time network
171s
platform
windows7_x64
resource
win7-20220414-en
submitted
16/05/2022, 22:27

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
vbc.exe
Size 539KB
Sample220516-2c27maehal
SHA256 96b2da5b493ac29bb08e8045157cd8b2643dcfa4a937f7eced5a276b8f8a6b67
MD5 bf3dcbe1e67a122f82c0d0adb6ab2c3e
SHA1 c4c6b38c6321ba0e4490d2cd843748f732edf900
SHA512 36f6b08712433e2bd1c905756e592eeece8313c4ff9698fba6b319ea936d7f5b4fd413cf921828c94fe9ae68e2733e734c9d5e06c6fc6e5cef479844a5a228f7
MD5 SHA1 SHA512

Score

10^/10

remcos remotehost collection persistence rat spyware stealer

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

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/824-108-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/824-109-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/900-89-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 5 IoCs

resource	yara_rule
behavioral1/memory/1016-96-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1016-102-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/900-89-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/824-108-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/824-109-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft

Executes dropped EXE 4 IoCs

pid	Process
2020	ios.exe
900	ios.exe
1016	ios.exe
824	ios.exe

Loads dropped DLL 2 IoCs

pid	Process
1188	cmd.exe
1188	cmd.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	ios.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\Re = "\"C:\\Users\\Admin\\AppData\\Roaming\\ios.exe\""	vbc.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\	ios.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\Re = "\"C:\\Users\\Admin\\AppData\\Roaming\\ios.exe\""	ios.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2020 set thread context of 900	2020	ios.exe	33
PID 2020 set thread context of 1016	2020	ios.exe	34
PID 2020 set thread context of 824	2020	ios.exe	35

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
900	ios.exe
900	ios.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1016	ios.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2020	ios.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 1648	1676	vbc.exe	28
PID 1676 wrote to memory of 1648	1676	vbc.exe	28
PID 1676 wrote to memory of 1648	1676	vbc.exe	28
PID 1676 wrote to memory of 1648	1676	vbc.exe	28
PID 1648 wrote to memory of 1188	1648	WScript.exe	29
PID 1648 wrote to memory of 1188	1648	WScript.exe	29
PID 1648 wrote to memory of 1188	1648	WScript.exe	29
PID 1648 wrote to memory of 1188	1648	WScript.exe	29
PID 1188 wrote to memory of 2020	1188	cmd.exe	31
PID 1188 wrote to memory of 2020	1188	cmd.exe	31
PID 1188 wrote to memory of 2020	1188	cmd.exe	31
PID 1188 wrote to memory of 2020	1188	cmd.exe	31
PID 2020 wrote to memory of 900	2020	ios.exe	33
PID 2020 wrote to memory of 900	2020	ios.exe	33
PID 2020 wrote to memory of 900	2020	ios.exe	33
PID 2020 wrote to memory of 900	2020	ios.exe	33
PID 2020 wrote to memory of 900	2020	ios.exe	33
PID 2020 wrote to memory of 900	2020	ios.exe	33
PID 2020 wrote to memory of 900	2020	ios.exe	33
PID 2020 wrote to memory of 900	2020	ios.exe	33
PID 2020 wrote to memory of 1016	2020	ios.exe	34
PID 2020 wrote to memory of 1016	2020	ios.exe	34
PID 2020 wrote to memory of 1016	2020	ios.exe	34
PID 2020 wrote to memory of 1016	2020	ios.exe	34
PID 2020 wrote to memory of 1016	2020	ios.exe	34
PID 2020 wrote to memory of 1016	2020	ios.exe	34
PID 2020 wrote to memory of 1016	2020	ios.exe	34
PID 2020 wrote to memory of 1016	2020	ios.exe	34
PID 2020 wrote to memory of 824	2020	ios.exe	35
PID 2020 wrote to memory of 824	2020	ios.exe	35
PID 2020 wrote to memory of 824	2020	ios.exe	35
PID 2020 wrote to memory of 824	2020	ios.exe	35
PID 2020 wrote to memory of 824	2020	ios.exe	35
PID 2020 wrote to memory of 824	2020	ios.exe	35
PID 2020 wrote to memory of 824	2020	ios.exe	35
PID 2020 wrote to memory of 824	2020	ios.exe	35

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1648
- - 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:1188
  - - 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 SetThreadContext
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2020
    - - C:\Users\Admin\AppData\Roaming\ios.exe
        
        C:\Users\Admin\AppData\Roaming\ios.exe /stext "C:\Users\Admin\AppData\Local\Temp\wbkitrmimrpipqa"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        
        PID:900
    - - C:\Users\Admin\AppData\Roaming\ios.exe
        
        C:\Users\Admin\AppData\Roaming\ios.exe /stext "C:\Users\Admin\AppData\Local\Temp\ydpatkwbizhnzwobmlz"
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1016
    - - C:\Users\Admin\AppData\Roaming\ios.exe
        
        C:\Users\Admin\AppData\Roaming\ios.exe /stext "C:\Users\Admin\AppData\Local\Temp\jxcluchdwhzaccknvwttzo"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        
        PID:824

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

T1064

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

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

wbkitrmimrpipqa

Path C:\Users\Admin\AppData\Local\Temp\wbkitrmimrpipqa
Size 2B
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
MD5 SHA1 SHA512

Submit Download

ios.exe

Path C:\Users\Admin\AppData\Roaming\ios.exe
Size 539KB
SHA256 96b2da5b493ac29bb08e8045157cd8b2643dcfa4a937f7eced5a276b8f8a6b67
MD5 bf3dcbe1e67a122f82c0d0adb6ab2c3e
SHA1 c4c6b38c6321ba0e4490d2cd843748f732edf900
SHA512 36f6b08712433e2bd1c905756e592eeece8313c4ff9698fba6b319ea936d7f5b4fd413cf921828c94fe9ae68e2733e734c9d5e06c6fc6e5cef479844a5a228f7
SSDEEP 12288:ceAllyB6NFuJ+yu/GfPYnuuA1uTHHnz5N9:ceAQOuwlOPYXD9
MD5 SHA1 SHA512 SSDEEP

Submit Download

ios.exe

Path C:\Users\Admin\AppData\Roaming\ios.exe
Size 539KB
SHA256 96b2da5b493ac29bb08e8045157cd8b2643dcfa4a937f7eced5a276b8f8a6b67
MD5 bf3dcbe1e67a122f82c0d0adb6ab2c3e
SHA1 c4c6b38c6321ba0e4490d2cd843748f732edf900
SHA512 36f6b08712433e2bd1c905756e592eeece8313c4ff9698fba6b319ea936d7f5b4fd413cf921828c94fe9ae68e2733e734c9d5e06c6fc6e5cef479844a5a228f7
SSDEEP 12288:ceAllyB6NFuJ+yu/GfPYnuuA1uTHHnz5N9:ceAQOuwlOPYXD9
MD5 SHA1 SHA512 SSDEEP

Submit Download

ios.exe

Path C:\Users\Admin\AppData\Roaming\ios.exe
Size 539KB
SHA256 96b2da5b493ac29bb08e8045157cd8b2643dcfa4a937f7eced5a276b8f8a6b67
MD5 bf3dcbe1e67a122f82c0d0adb6ab2c3e
SHA1 c4c6b38c6321ba0e4490d2cd843748f732edf900
SHA512 36f6b08712433e2bd1c905756e592eeece8313c4ff9698fba6b319ea936d7f5b4fd413cf921828c94fe9ae68e2733e734c9d5e06c6fc6e5cef479844a5a228f7
SSDEEP 12288:ceAllyB6NFuJ+yu/GfPYnuuA1uTHHnz5N9:ceAQOuwlOPYXD9
MD5 SHA1 SHA512 SSDEEP

Submit Download

ios.exe

Path C:\Users\Admin\AppData\Roaming\ios.exe
Size 539KB
SHA256 96b2da5b493ac29bb08e8045157cd8b2643dcfa4a937f7eced5a276b8f8a6b67
MD5 bf3dcbe1e67a122f82c0d0adb6ab2c3e
SHA1 c4c6b38c6321ba0e4490d2cd843748f732edf900
SHA512 36f6b08712433e2bd1c905756e592eeece8313c4ff9698fba6b319ea936d7f5b4fd413cf921828c94fe9ae68e2733e734c9d5e06c6fc6e5cef479844a5a228f7
SSDEEP 12288:ceAllyB6NFuJ+yu/GfPYnuuA1uTHHnz5N9:ceAQOuwlOPYXD9
MD5 SHA1 SHA512 SSDEEP

Submit Download

ios.exe

Path C:\Users\Admin\AppData\Roaming\ios.exe
Size 539KB
SHA256 96b2da5b493ac29bb08e8045157cd8b2643dcfa4a937f7eced5a276b8f8a6b67
MD5 bf3dcbe1e67a122f82c0d0adb6ab2c3e
SHA1 c4c6b38c6321ba0e4490d2cd843748f732edf900
SHA512 36f6b08712433e2bd1c905756e592eeece8313c4ff9698fba6b319ea936d7f5b4fd413cf921828c94fe9ae68e2733e734c9d5e06c6fc6e5cef479844a5a228f7
SSDEEP 12288:ceAllyB6NFuJ+yu/GfPYnuuA1uTHHnz5N9:ceAQOuwlOPYXD9
MD5 SHA1 SHA512 SSDEEP

Submit Download

ios.exe

Path \Users\Admin\AppData\Roaming\ios.exe
Size 539KB
SHA256 96b2da5b493ac29bb08e8045157cd8b2643dcfa4a937f7eced5a276b8f8a6b67
MD5 bf3dcbe1e67a122f82c0d0adb6ab2c3e
SHA1 c4c6b38c6321ba0e4490d2cd843748f732edf900
SHA512 36f6b08712433e2bd1c905756e592eeece8313c4ff9698fba6b319ea936d7f5b4fd413cf921828c94fe9ae68e2733e734c9d5e06c6fc6e5cef479844a5a228f7
SSDEEP 12288:ceAllyB6NFuJ+yu/GfPYnuuA1uTHHnz5N9:ceAQOuwlOPYXD9
MD5 SHA1 SHA512 SSDEEP

Submit Download

ios.exe

Path \Users\Admin\AppData\Roaming\ios.exe
Size 539KB
SHA256 96b2da5b493ac29bb08e8045157cd8b2643dcfa4a937f7eced5a276b8f8a6b67
MD5 bf3dcbe1e67a122f82c0d0adb6ab2c3e
SHA1 c4c6b38c6321ba0e4490d2cd843748f732edf900
SHA512 36f6b08712433e2bd1c905756e592eeece8313c4ff9698fba6b319ea936d7f5b4fd413cf921828c94fe9ae68e2733e734c9d5e06c6fc6e5cef479844a5a228f7
SSDEEP 12288:ceAllyB6NFuJ+yu/GfPYnuuA1uTHHnz5N9:ceAQOuwlOPYXD9
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/824-101-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/824-99-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/824-109-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/824-108-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/824-107-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/824-92-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/824-97-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/824-100-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/900-86-0x0000000000400000-0x0000000000478000-memory.dmp

Download

memory/900-75-0x0000000000400000-0x0000000000478000-memory.dmp

Download

memory/900-89-0x0000000000400000-0x0000000000478000-memory.dmp

Download

memory/900-71-0x0000000000400000-0x0000000000478000-memory.dmp

Download

memory/900-72-0x0000000000400000-0x0000000000478000-memory.dmp

Download

memory/900-74-0x0000000000400000-0x0000000000478000-memory.dmp

Download

memory/900-76-0x0000000000400000-0x0000000000478000-memory.dmp

Download

memory/1016-85-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/1016-81-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/1016-83-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/1016-79-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/1016-96-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/1016-87-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/1016-102-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/1016-95-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/1676-56-0x0000000000220000-0x0000000000295000-memory.dmp

Download

memory/1676-58-0x0000000000400000-0x0000000002BA4000-memory.dmp

Download

memory/1676-54-0x0000000075761000-0x0000000075763000-memory.dmp

Download

memory/1676-55-0x0000000002D4E000-0x0000000002D93000-memory.dmp

Download

memory/2020-70-0x0000000000400000-0x0000000002BA4000-memory.dmp

Download

memory/2020-68-0x000000000030E000-0x0000000000353000-memory.dmp

Download

memory/2020-69-0x0000000002C20000-0x0000000002C95000-memory.dmp

Download