remcos | f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
17-05-2024 04:20

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General

Target

Sample Order May009.exe
Size

1.5MB
MD5

eb6fbf94ac91b528b6c2fef7c6dd79af
SHA1

4f5079f8402b5a935cc9dcf2fd02ee98dabf95ed
SHA256

f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220
SHA512

2078931c8643f000560734eec6d73b88382f16e9a5db6a48e151e0bee9cbd53f87384bd8731b248eb8e446a1cedf2041e81528fe5a73bf07a800f6b5c76696b2
SSDEEP

24576:jElEJSNI3rQ9891j8F1Oo/42VuKZWaKoPDfK6Dy6pPnltz1k:QlSaI3ruUjCT/huroPVy65lh1

Score

10^/10

remcos remcoco collection execution rat

Malware Config

Extracted

Family

remcos

Botnet

Remcoco

173.212.199.134:8808

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-PMP82R
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

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/1188-79-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/2940-80-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2940-80-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4344-83-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1188-79-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

1064 powershell.exe
464 powershell.exe

pid	process
1064	powershell.exe
464	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Sample Order May009.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	Sample Order May009.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Sample Order May009.exevbc.exe

description	pid	process	target process
PID 3076 set thread context of 432	3076	Sample Order May009.exe	vbc.exe
PID 432 set thread context of 2940	432	vbc.exe	vbc.exe
PID 432 set thread context of 1188	432	vbc.exe	vbc.exe
PID 432 set thread context of 4344	432	vbc.exe	vbc.exe

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

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/Job
T1053

Processes:

schtasks.exe

pid process

2548 schtasks.exe

pid	process
2548	schtasks.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

Sample Order May009.exepowershell.exepowershell.exevbc.exevbc.exe

pid	process
3076	Sample Order May009.exe
3076	Sample Order May009.exe
3076	Sample Order May009.exe
3076	Sample Order May009.exe
3076	Sample Order May009.exe
3076	Sample Order May009.exe
3076	Sample Order May009.exe
3076	Sample Order May009.exe
3076	Sample Order May009.exe
3076	Sample Order May009.exe
3076	Sample Order May009.exe
1064	powershell.exe
464	powershell.exe
3076	Sample Order May009.exe
464	powershell.exe
1064	powershell.exe
2940	vbc.exe
2940	vbc.exe
4344	vbc.exe
4344	vbc.exe
2940	vbc.exe
2940	vbc.exe

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

vbc.exe

pid process

432 vbc.exe
432 vbc.exe
432 vbc.exe
432 vbc.exe

pid	process
432	vbc.exe
432	vbc.exe
432	vbc.exe
432	vbc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Sample Order May009.exepowershell.exepowershell.exevbc.exe

description	pid	process
Token: SeDebugPrivilege	3076	Sample Order May009.exe
Token: SeDebugPrivilege	1064	powershell.exe
Token: SeDebugPrivilege	464	powershell.exe
Token: SeDebugPrivilege	4344	vbc.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

Sample Order May009.exevbc.exe

description	pid	process	target process
PID 3076 wrote to memory of 1064	3076	Sample Order May009.exe	powershell.exe
PID 3076 wrote to memory of 1064	3076	Sample Order May009.exe	powershell.exe
PID 3076 wrote to memory of 1064	3076	Sample Order May009.exe	powershell.exe
PID 3076 wrote to memory of 464	3076	Sample Order May009.exe	powershell.exe
PID 3076 wrote to memory of 464	3076	Sample Order May009.exe	powershell.exe
PID 3076 wrote to memory of 464	3076	Sample Order May009.exe	powershell.exe
PID 3076 wrote to memory of 2548	3076	Sample Order May009.exe	schtasks.exe
PID 3076 wrote to memory of 2548	3076	Sample Order May009.exe	schtasks.exe
PID 3076 wrote to memory of 2548	3076	Sample Order May009.exe	schtasks.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 3076 wrote to memory of 432	3076	Sample Order May009.exe	vbc.exe
PID 432 wrote to memory of 2940	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 2940	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 2940	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 2940	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 1188	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 1188	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 1188	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 1188	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 3636	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 3636	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 3636	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 4344	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 4344	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 4344	432	vbc.exe	vbc.exe
PID 432 wrote to memory of 4344	432	vbc.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\Sample Order May009.exe
"C:\Users\Admin\AppData\Local\Temp\Sample Order May009.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Sample Order May009.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1064
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OvSlUx.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:464
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OvSlUx" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC13D.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2548
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:432
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\ptzvdjewpghmfh"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2940
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\rvnoebpydpzrpnlbq"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1188
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\cpsyetzrqxrwsbzfzjbv"
    3⤵
    PID:3636
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\cpsyetzrqxrwsbzfzjbv"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4344

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scripting

T1064

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
2455dde8c9dee6648afcef8542c414f9

SHA1
1649f6bda582ad30399eb169b31a5470f2959dee

SHA256
6feadfd37d4db27e3d7f81fb7f12a492b2adc9378441ab070f82d57ddb05e03b

SHA512
d0906cac218e1e963448ecc0efe3853d80d9573f8978ff45bf0c2f082c7bada7eb46f7d2ca630f96cc7c6a383ffd65f45cf849852bc20f453747d881e9b57466

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gjldwzj4.vnc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\ptzvdjewpghmfh

Filesize
4KB

MD5
18b6368b183e546a35847ae24b4b2913

SHA1
040545f7ac2c987d2a79b5e7f1cf9ab83bd25923

SHA256
54c101b6b1241b6a0574a66e5a5b9bddc6c60a4daf7338dba6fe3f65b27382af

SHA512
68ba8734016705cd12bf9d7ce41d5c823b2ec6ce9ee1ee7e9da9efcd9c88ef1f1b18148d91ad6a271c7a88d4ca098a99198ca709fcf217f9b1fa18f74c48d698

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC13D.tmp

Filesize
1KB

MD5
220b6626281de93dcc731f1075035004

SHA1
379d84a7844cb946db34807f4f36ace096509227

SHA256
d4f8957f3125c5eedc925fb953fbaf645082a377609a57bd5b0116463743ff0f

SHA512
3461b2c03aa3f29810adea6ac2dbb8d72d1cfebd7df3dbd0dea1ae68a1e6da74e50aa666a8f45701316a5b3e22f8c568e8c161476d4678a66da20342e4bc1ac9

Download Submit
memory/432-120-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-124-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-119-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-118-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-121-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-122-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-110-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-123-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-105-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/432-108-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/432-109-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/432-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-125-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/432-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/464-102-0x0000000007F90000-0x0000000007FAA000-memory.dmp

Filesize
104KB

Download
memory/464-58-0x0000000074D40000-0x0000000074D8C000-memory.dmp

Filesize
304KB

Download
memory/464-101-0x0000000007E90000-0x0000000007EA4000-memory.dmp

Filesize
80KB

Download
memory/464-51-0x0000000006930000-0x000000000694E000-memory.dmp

Filesize
120KB

Download
memory/464-52-0x0000000006ED0000-0x0000000006F1C000-memory.dmp

Filesize
304KB

Download
memory/464-26-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/464-103-0x0000000007F70000-0x0000000007F78000-memory.dmp

Filesize
32KB

Download
memory/464-100-0x0000000007E80000-0x0000000007E8E000-memory.dmp

Filesize
56KB

Download
memory/464-88-0x0000000007E50000-0x0000000007E61000-memory.dmp

Filesize
68KB

Download
memory/464-113-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/464-68-0x0000000006E70000-0x0000000006E8E000-memory.dmp

Filesize
120KB

Download
memory/464-87-0x0000000007ED0000-0x0000000007F66000-memory.dmp

Filesize
600KB

Download
memory/464-69-0x0000000007960000-0x0000000007A03000-memory.dmp

Filesize
652KB

Download
memory/464-57-0x0000000007920000-0x0000000007952000-memory.dmp

Filesize
200KB

Download
memory/464-73-0x0000000007A40000-0x0000000007A5A000-memory.dmp

Filesize
104KB

Download
memory/464-72-0x0000000008330000-0x00000000089AA000-memory.dmp

Filesize
6.5MB

Download
memory/464-74-0x0000000007CC0000-0x0000000007CCA000-memory.dmp

Filesize
40KB

Download
memory/1064-21-0x00000000057E0000-0x0000000005846000-memory.dmp

Filesize
408KB

Download
memory/1064-16-0x0000000002DC0000-0x0000000002DF6000-memory.dmp

Filesize
216KB

Download
memory/1064-17-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/1064-24-0x0000000006080000-0x00000000063D4000-memory.dmp

Filesize
3.3MB

Download
memory/1064-18-0x00000000058D0000-0x0000000005EF8000-memory.dmp

Filesize
6.2MB

Download
memory/1064-19-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/1064-22-0x0000000005850000-0x00000000058B6000-memory.dmp

Filesize
408KB

Download
memory/1064-20-0x0000000005740000-0x0000000005762000-memory.dmp

Filesize
136KB

Download
memory/1064-25-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/1064-117-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/1064-89-0x0000000074D40000-0x0000000074D8C000-memory.dmp

Filesize
304KB

Download
memory/1188-79-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1188-76-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1188-77-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2940-80-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2940-78-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2940-75-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3076-6-0x0000000006A90000-0x0000000006AAE000-memory.dmp

Filesize
120KB

Download
memory/3076-0-0x000000007449E000-0x000000007449F000-memory.dmp

Filesize
4KB

Download
memory/3076-1-0x0000000000920000-0x0000000000A9C000-memory.dmp

Filesize
1.5MB

Download
memory/3076-11-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/3076-2-0x00000000059E0000-0x0000000005F84000-memory.dmp

Filesize
5.6MB

Download
memory/3076-10-0x000000007449E000-0x000000007449F000-memory.dmp

Filesize
4KB

Download
memory/3076-9-0x00000000092A0000-0x000000000933C000-memory.dmp

Filesize
624KB

Download
memory/3076-50-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/3076-8-0x0000000006C20000-0x0000000006CE0000-memory.dmp

Filesize
768KB

Download
memory/3076-7-0x0000000006680000-0x0000000006690000-memory.dmp

Filesize
64KB

Download
memory/3076-3-0x00000000054D0000-0x0000000005562000-memory.dmp

Filesize
584KB

Download
memory/3076-5-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/3076-4-0x0000000005480000-0x000000000548A000-memory.dmp

Filesize
40KB

Download
memory/4344-83-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4344-81-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4344-82-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download