remcos | 86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
27/08/2024, 16:42

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General

Target

thrylPXnvfySmGN.exe
Size

928KB
MD5

04d4d4d83e1601d220f83f09ae16cd79
SHA1

4f0a7d8060399a7ae5029690bdee2bf3b2e3e395
SHA256

86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8
SHA512

87747374bd1c72c9d33d2af9e7456617c95e6c100788f16123bf15cb1c6748a13ad1ac9b5a967553fdf668ea226033a741c08f45febc2130a7e50ccabe69333c
SSDEEP

24576:bhdtlx9EP2aKUQ6/FfCH1bGl4rg5YWNexNBpqod:bhdrY+aPQiFgDWcxNzqi

Score

10^/10

remcos aug 26 collection credential_access discovery execution rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

AUG 26

sungito2.ddns.net:6509

154.216.19.222:5532

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-LXAZN2
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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 3 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral1/memory/2332-50-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/944-43-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/3036-51-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/3036-51-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/944-43-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2148	powershell.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
T1552.001

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	thrylPXnvfySmGN.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3068 set thread context of 2768	3068	thrylPXnvfySmGN.exe	31
PID 2768 set thread context of 944	2768	thrylPXnvfySmGN.exe	33
PID 2768 set thread context of 3036	2768	thrylPXnvfySmGN.exe	34
PID 2768 set thread context of 2332	2768	thrylPXnvfySmGN.exe	35

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 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	thrylPXnvfySmGN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	thrylPXnvfySmGN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	thrylPXnvfySmGN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	thrylPXnvfySmGN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	thrylPXnvfySmGN.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2148	powershell.exe
944	thrylPXnvfySmGN.exe
944	thrylPXnvfySmGN.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2768	thrylPXnvfySmGN.exe
2768	thrylPXnvfySmGN.exe
2768	thrylPXnvfySmGN.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2148	powershell.exe
Token: SeDebugPrivilege	2332	thrylPXnvfySmGN.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2768	thrylPXnvfySmGN.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 2148	3068	thrylPXnvfySmGN.exe	30
PID 3068 wrote to memory of 2148	3068	thrylPXnvfySmGN.exe	30
PID 3068 wrote to memory of 2148	3068	thrylPXnvfySmGN.exe	30
PID 3068 wrote to memory of 2148	3068	thrylPXnvfySmGN.exe	30
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 3068 wrote to memory of 2768	3068	thrylPXnvfySmGN.exe	31
PID 2768 wrote to memory of 944	2768	thrylPXnvfySmGN.exe	33
PID 2768 wrote to memory of 944	2768	thrylPXnvfySmGN.exe	33
PID 2768 wrote to memory of 944	2768	thrylPXnvfySmGN.exe	33
PID 2768 wrote to memory of 944	2768	thrylPXnvfySmGN.exe	33
PID 2768 wrote to memory of 944	2768	thrylPXnvfySmGN.exe	33
PID 2768 wrote to memory of 3036	2768	thrylPXnvfySmGN.exe	34
PID 2768 wrote to memory of 3036	2768	thrylPXnvfySmGN.exe	34
PID 2768 wrote to memory of 3036	2768	thrylPXnvfySmGN.exe	34
PID 2768 wrote to memory of 3036	2768	thrylPXnvfySmGN.exe	34
PID 2768 wrote to memory of 3036	2768	thrylPXnvfySmGN.exe	34
PID 2768 wrote to memory of 2332	2768	thrylPXnvfySmGN.exe	35
PID 2768 wrote to memory of 2332	2768	thrylPXnvfySmGN.exe	35
PID 2768 wrote to memory of 2332	2768	thrylPXnvfySmGN.exe	35
PID 2768 wrote to memory of 2332	2768	thrylPXnvfySmGN.exe	35
PID 2768 wrote to memory of 2332	2768	thrylPXnvfySmGN.exe	35

C:\Users\Admin\AppData\Local\Temp\thrylPXnvfySmGN.exe
"C:\Users\Admin\AppData\Local\Temp\thrylPXnvfySmGN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3068
- 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\thrylPXnvfySmGN.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2148
- C:\Users\Admin\AppData\Local\Temp\thrylPXnvfySmGN.exe
  "C:\Users\Admin\AppData\Local\Temp\thrylPXnvfySmGN.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2768
- - C:\Users\Admin\AppData\Local\Temp\thrylPXnvfySmGN.exe
    C:\Users\Admin\AppData\Local\Temp\thrylPXnvfySmGN.exe /stext "C:\Users\Admin\AppData\Local\Temp\vdufuupyfnnrgvnunz"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:944
- - C:\Users\Admin\AppData\Local\Temp\thrylPXnvfySmGN.exe
    C:\Users\Admin\AppData\Local\Temp\thrylPXnvfySmGN.exe /stext "C:\Users\Admin\AppData\Local\Temp\xfzxmnzztvfwjbbyekonne"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:3036
- - C:\Users\Admin\AppData\Local\Temp\thrylPXnvfySmGN.exe
    C:\Users\Admin\AppData\Local\Temp\thrylPXnvfySmGN.exe /stext "C:\Users\Admin\AppData\Local\Temp\ianqnfkthdxjtpxcnubgqizbe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
3fbf003fb6ba3534967ab4faf0671f1f

SHA1
322c18010b1f2905a6495798538e77947509abaa

SHA256
95798ebce6a92e9667101ed2450b985f79d1c24c34ba41faa2124fc5b864c611

SHA512
9e88bf5681deb8e729c8d3aebb30f68b00b3e2280b94e2406ad1a1d877bc8674573985b77595002109dbefc7267c602dffb5ae852d2a48be7315aea1d1c0bbed

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/944-40-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/944-42-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/944-43-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/944-41-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2332-47-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2332-49-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2332-50-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2768-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-61-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2768-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-98-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2768-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-97-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-90-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-89-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2768-58-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2768-62-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2768-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3036-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3036-51-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3036-45-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3068-2-0x0000000074AE0000-0x00000000751CE000-memory.dmp

Filesize
6.9MB

Download
memory/3068-3-0x0000000000500000-0x0000000000518000-memory.dmp

Filesize
96KB

Download
memory/3068-1-0x0000000000E30000-0x0000000000F1A000-memory.dmp

Filesize
936KB

Download
memory/3068-4-0x0000000074AEE000-0x0000000074AEF000-memory.dmp

Filesize
4KB

Download
memory/3068-5-0x0000000074AE0000-0x00000000751CE000-memory.dmp

Filesize
6.9MB

Download
memory/3068-6-0x0000000005090000-0x0000000005150000-memory.dmp

Filesize
768KB

Download
memory/3068-0-0x0000000074AEE000-0x0000000074AEF000-memory.dmp

Filesize
4KB

Download
memory/3068-30-0x0000000074AE0000-0x00000000751CE000-memory.dmp

Filesize
6.9MB

Download