remcos | c99b050645ebbc138018a9dcb4c3029bc1a9aa9376e7541c1011e815942948e1

Resubmissions

01/02/2023, 17:02

230201-vj6p3aah39 10

01/02/2023, 17:00

230201-vjf5eacg4s 10

01/02/2023, 16:57

230201-vgbrxacg2y 10

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
01/02/2023, 17:00

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General

Target

ORDER INQUIRY 20230201.exe
Size

1.1MB
MD5

4bc918bf6311c5b753c353efd306547e
SHA1

9b7301fc448a6d9564e6b984363190ffa88ab891
SHA256

89f4203e055ad6d3b40b74d683ed1ca0436ad4df41c3456f23134c4a15eb6c13
SHA512

0d9b575c93cb73de5cfc175335f72cefb8b9d3f5d5e90ab1353b0362fbde0bbcfc288fa5039759fb92ad0154e836c3cefb9636e7a108d5706023611e1ac93cfe
SSDEEP

24576:peOaJr8zw6RgDlCwwWbYqhseWy97+3A3Me83RAiTH/qc4N34:pAJr8zgDlCww6YqhsOY3OKhAiT

Score

10^/10

remcos new rem stub collection rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

NEW REM STUB

onyem.duckdns.org:5050

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
Rmc-HFP2Q6
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

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
behavioral17/memory/1496-93-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral17/memory/1496-94-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral17/memory/544-90-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 4 IoCs

resource	yara_rule
behavioral17/memory/1736-89-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral17/memory/544-90-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral17/memory/1496-93-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral17/memory/1496-94-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft

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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	ORDER INQUIRY 20230201.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1632 set thread context of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 588 set thread context of 544	588	ORDER INQUIRY 20230201.exe	33
PID 588 set thread context of 1496	588	ORDER INQUIRY 20230201.exe	34
PID 588 set thread context of 1736	588	ORDER INQUIRY 20230201.exe	36

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1272	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1632	ORDER INQUIRY 20230201.exe
1632	ORDER INQUIRY 20230201.exe
1632	ORDER INQUIRY 20230201.exe
1632	ORDER INQUIRY 20230201.exe
1632	ORDER INQUIRY 20230201.exe
1632	ORDER INQUIRY 20230201.exe
1324	powershell.exe
544	ORDER INQUIRY 20230201.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
588	ORDER INQUIRY 20230201.exe
588	ORDER INQUIRY 20230201.exe
588	ORDER INQUIRY 20230201.exe
588	ORDER INQUIRY 20230201.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1632	ORDER INQUIRY 20230201.exe
Token: SeDebugPrivilege	1324	powershell.exe
Token: SeDebugPrivilege	1736	ORDER INQUIRY 20230201.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
588	ORDER INQUIRY 20230201.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 1324	1632	ORDER INQUIRY 20230201.exe	28
PID 1632 wrote to memory of 1324	1632	ORDER INQUIRY 20230201.exe	28
PID 1632 wrote to memory of 1324	1632	ORDER INQUIRY 20230201.exe	28
PID 1632 wrote to memory of 1324	1632	ORDER INQUIRY 20230201.exe	28
PID 1632 wrote to memory of 1272	1632	ORDER INQUIRY 20230201.exe	30
PID 1632 wrote to memory of 1272	1632	ORDER INQUIRY 20230201.exe	30
PID 1632 wrote to memory of 1272	1632	ORDER INQUIRY 20230201.exe	30
PID 1632 wrote to memory of 1272	1632	ORDER INQUIRY 20230201.exe	30
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 1632 wrote to memory of 588	1632	ORDER INQUIRY 20230201.exe	32
PID 588 wrote to memory of 544	588	ORDER INQUIRY 20230201.exe	33
PID 588 wrote to memory of 544	588	ORDER INQUIRY 20230201.exe	33
PID 588 wrote to memory of 544	588	ORDER INQUIRY 20230201.exe	33
PID 588 wrote to memory of 544	588	ORDER INQUIRY 20230201.exe	33
PID 588 wrote to memory of 544	588	ORDER INQUIRY 20230201.exe	33
PID 588 wrote to memory of 1496	588	ORDER INQUIRY 20230201.exe	34
PID 588 wrote to memory of 1496	588	ORDER INQUIRY 20230201.exe	34
PID 588 wrote to memory of 1496	588	ORDER INQUIRY 20230201.exe	34
PID 588 wrote to memory of 1496	588	ORDER INQUIRY 20230201.exe	34
PID 588 wrote to memory of 1496	588	ORDER INQUIRY 20230201.exe	34
PID 588 wrote to memory of 636	588	ORDER INQUIRY 20230201.exe	35
PID 588 wrote to memory of 636	588	ORDER INQUIRY 20230201.exe	35
PID 588 wrote to memory of 636	588	ORDER INQUIRY 20230201.exe	35
PID 588 wrote to memory of 636	588	ORDER INQUIRY 20230201.exe	35
PID 588 wrote to memory of 1736	588	ORDER INQUIRY 20230201.exe	36
PID 588 wrote to memory of 1736	588	ORDER INQUIRY 20230201.exe	36
PID 588 wrote to memory of 1736	588	ORDER INQUIRY 20230201.exe	36
PID 588 wrote to memory of 1736	588	ORDER INQUIRY 20230201.exe	36
PID 588 wrote to memory of 1736	588	ORDER INQUIRY 20230201.exe	36

C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe
"C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\VlANzLOhprFUhQ.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1324
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VlANzLOhprFUhQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBCAC.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1272
- C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe
  "C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:588
- - C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe
    "C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe" /stext "C:\Users\Admin\AppData\Local\Temp\fgfqrvesg"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:544
- - C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe
    "C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe" /stext "C:\Users\Admin\AppData\Local\Temp\pikisopuuwap"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1496
- - C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe
    "C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe" /stext "C:\Users\Admin\AppData\Local\Temp\zdxtsgioiesujzaa"
    3⤵
    PID:636
- - C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe
    "C:\Users\Admin\AppData\Local\Temp\ORDER INQUIRY 20230201.exe" /stext "C:\Users\Admin\AppData\Local\Temp\zdxtsgioiesujzaa"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1736

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\fgfqrvesg

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBCAC.tmp

Filesize
1KB

MD5
4ea90ae8b6af308c07a4cadc468b83ff

SHA1
6521053dc0ac16e2dd2837fb23450d8eecb07253

SHA256
84a274fc43d77b0abf3047a1d86529247231142b7a89168b4eb88087af8dbaae

SHA512
3e9d1b7a296ee0a91a131013bf2c5a073199e9526b831ec24103d00be8d72da6bbb3b0a5edae7c8ac201bcd705c3bc8e4231e524f033699a6f09931c27bc52fe

Download Submit
memory/544-90-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/588-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/588-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/588-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/588-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/588-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/588-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/588-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/588-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/588-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/588-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/588-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/588-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1324-91-0x000000006E5F0000-0x000000006EB9B000-memory.dmp

Filesize
5.7MB

Download
memory/1324-81-0x000000006E5F0000-0x000000006EB9B000-memory.dmp

Filesize
5.7MB

Download
memory/1496-94-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1496-93-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1632-63-0x0000000008320000-0x000000000839C000-memory.dmp

Filesize
496KB

Download
memory/1632-54-0x0000000000970000-0x0000000000A86000-memory.dmp

Filesize
1.1MB

Download
memory/1632-58-0x0000000007F60000-0x0000000008012000-memory.dmp

Filesize
712KB

Download
memory/1632-57-0x0000000000750000-0x000000000075A000-memory.dmp

Filesize
40KB

Download
memory/1632-56-0x00000000004E0000-0x00000000004F4000-memory.dmp

Filesize
80KB

Download
memory/1632-55-0x0000000076091000-0x0000000076093000-memory.dmp

Filesize
8KB

Download
memory/1736-89-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download