remcos | 83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344

Analysis

max time kernel
149s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09/10/2024, 01:59

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General

Target

83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe
Size

1.6MB
MD5

2e58a14f3a8d78298aee99cb4ea39adc
SHA1

90c96e8671f739a0a20daaafab1567d3c457a612
SHA256

83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344
SHA512

71f115edb7c4013458f957473aa943a910d509f2a94b0ab6e57e84d13e458c17571702830a3eb7cf9e784e52ff1c986e35088a7ce7ab094c48f818d2a7fa6a5d
SSDEEP

24576:ffmMv6Ckr7Mny5QLH0yTfIXPlFb2wjVkwAE9owb7uVJnIJYKR3prW4BoPEK8X3PR:f3v+7/5QLVYdkQ99b7ujIJjixkyKi87

Score

10^/10

remcos remotehost collection discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

www.projectusf.com:2404

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
gfh
mouse_option
false
mutex
Rmc-J91LMC
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

Detected Nirsoft tools 6 IoCs

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

resource	yara_rule
behavioral2/memory/220-42-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1520-41-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1520-34-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/220-33-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2352-40-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1520-44-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/220-42-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/220-33-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1520-41-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1520-34-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1520-44-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Quotes.vbs	Quotes.exe

Executes dropped EXE 1 IoCs

pid	Process
4028	Quotes.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0009000000023bfb-5.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4028 set thread context of 2072	4028	Quotes.exe	87
PID 2072 set thread context of 1520	2072	svchost.exe	88
PID 2072 set thread context of 220	2072	svchost.exe	89
PID 2072 set thread context of 2352	2072	svchost.exe	90

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1520	svchost.exe
1520	svchost.exe
2352	svchost.exe
2352	svchost.exe
1520	svchost.exe
1520	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
4028	Quotes.exe
2072	svchost.exe
2072	svchost.exe
2072	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2352	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2072	svchost.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4400 wrote to memory of 4028	4400	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe	86
PID 4400 wrote to memory of 4028	4400	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe	86
PID 4400 wrote to memory of 4028	4400	83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe	86
PID 4028 wrote to memory of 2072	4028	Quotes.exe	87
PID 4028 wrote to memory of 2072	4028	Quotes.exe	87
PID 4028 wrote to memory of 2072	4028	Quotes.exe	87
PID 4028 wrote to memory of 2072	4028	Quotes.exe	87
PID 2072 wrote to memory of 1520	2072	svchost.exe	88
PID 2072 wrote to memory of 1520	2072	svchost.exe	88
PID 2072 wrote to memory of 1520	2072	svchost.exe	88
PID 2072 wrote to memory of 1520	2072	svchost.exe	88
PID 2072 wrote to memory of 220	2072	svchost.exe	89
PID 2072 wrote to memory of 220	2072	svchost.exe	89
PID 2072 wrote to memory of 220	2072	svchost.exe	89
PID 2072 wrote to memory of 220	2072	svchost.exe	89
PID 2072 wrote to memory of 2352	2072	svchost.exe	90
PID 2072 wrote to memory of 2352	2072	svchost.exe	90
PID 2072 wrote to memory of 2352	2072	svchost.exe	90
PID 2072 wrote to memory of 2352	2072	svchost.exe	90

C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe
"C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4400
- C:\Users\Admin\AppData\Local\directory\Quotes.exe
  "C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4028
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2072
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\djccazejjjifxlkuxtydfbpvp"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1520
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\nlpubrodfrakzayyoelwqojexqima"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:220
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\qfvfckzftzsocgucxpxyttevyxzntzuf"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2352

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\gfh\logs.dat

Filesize
144B

MD5
254425d9cc84a940efaca4a84b869b81

SHA1
eb9581bf8b003b2a569f2610a9a6a90332b63a7c

SHA256
80fa63a99962cdeb94906dedce6ea2ba3d0960e222893ef79de78c0927513c58

SHA512
b2ea3bed6a15e45e8687fd0015ad64dfd15a3682e9f667fdfad4b09e598dfc2e1e7b76dfb269da582f879d3b1362c4d71a48758d76118ef68010180b893d6190

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

Filesize
4KB

MD5
7aca43b2800ceb18b3ed2326532545de

SHA1
d4cf207ef85bd749d59c1cb27a09c167ee21523a

SHA256
3d9f8622d97587fd84d3d0560a50ab38e5f894fe4b5bcaa34279643fdaaeb480

SHA512
0e002e6b8d965c227d9b1aa7c0251619c787ec7717e59667e756e5815e3666a955ea397eb148a1ed6bb7d8045727e4efa656a103f14bc70a03b03f0c91283c2f

Download Submit
C:\Users\Admin\AppData\Local\directory\Quotes.exe

Filesize
1.6MB

MD5
2e58a14f3a8d78298aee99cb4ea39adc

SHA1
90c96e8671f739a0a20daaafab1567d3c457a612

SHA256
83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344

SHA512
71f115edb7c4013458f957473aa943a910d509f2a94b0ab6e57e84d13e458c17571702830a3eb7cf9e784e52ff1c986e35088a7ce7ab094c48f818d2a7fa6a5d

Download Submit
memory/220-33-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/220-42-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/220-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/220-32-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1520-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1520-34-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1520-41-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1520-44-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1520-31-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2072-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-89-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-88-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-46-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2072-49-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2072-50-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2072-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2072-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2352-40-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2352-39-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2352-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4028-10-0x0000000004010000-0x0000000004410000-memory.dmp

Filesize
4.0MB

Download
memory/4400-2-0x0000000004450000-0x0000000004850000-memory.dmp

Filesize
4.0MB

Download