remcos | 42935d2557a1d94823d32a2d9e6017a33f961b9e672292beed123d4b41c81c20

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-10-2024 08:42

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General

Target

PURCHASE_ORDER.exe
Size

1.6MB
MD5

ce5790a8c9abff9f6e605373f64cb9d6
SHA1

38952bb5ce924019cec324793cc4d3c8307af4fa
SHA256

42935d2557a1d94823d32a2d9e6017a33f961b9e672292beed123d4b41c81c20
SHA512

7d1cbbdcc179f52faa6513571f9ccaf622655f1560d24902508b03d04a9f2fa3446d5bb7f4a1b9cc46944778c0b9c17630ea7061206d2d0e0da92cc13acc16b6
SSDEEP

24576:ffmMv6Ckr7Mny5QLh+v0UP7Gm7AIwc/8/fOGu7vJM57icn08nmpMBwHACDEp:f3v+7/5QLhtUP7JkItw0Tq10iKHxW

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/892-37-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/432-39-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2324-38-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2324-34-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/432-33-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2324-44-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/432-39-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/432-33-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2324-38-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2324-34-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2324-44-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
1880	PO.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 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0009000000023c9e-5.dat	autoit_exe
behavioral2/memory/1880-10-0x0000000004150000-0x0000000004550000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1880 set thread context of 1276	1880	PO.exe	87
PID 1276 set thread context of 2324	1276	svchost.exe	88
PID 1276 set thread context of 432	1276	svchost.exe	89
PID 1276 set thread context of 892	1276	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	PO.exe
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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PURCHASE_ORDER.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2324	svchost.exe
2324	svchost.exe
892	svchost.exe
892	svchost.exe
2324	svchost.exe
2324	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
1880	PO.exe
1276	svchost.exe
1276	svchost.exe
1276	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	892	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1276	svchost.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4524 wrote to memory of 1880	4524	PURCHASE_ORDER.exe	86
PID 4524 wrote to memory of 1880	4524	PURCHASE_ORDER.exe	86
PID 4524 wrote to memory of 1880	4524	PURCHASE_ORDER.exe	86
PID 1880 wrote to memory of 1276	1880	PO.exe	87
PID 1880 wrote to memory of 1276	1880	PO.exe	87
PID 1880 wrote to memory of 1276	1880	PO.exe	87
PID 1880 wrote to memory of 1276	1880	PO.exe	87
PID 1276 wrote to memory of 2324	1276	svchost.exe	88
PID 1276 wrote to memory of 2324	1276	svchost.exe	88
PID 1276 wrote to memory of 2324	1276	svchost.exe	88
PID 1276 wrote to memory of 2324	1276	svchost.exe	88
PID 1276 wrote to memory of 432	1276	svchost.exe	89
PID 1276 wrote to memory of 432	1276	svchost.exe	89
PID 1276 wrote to memory of 432	1276	svchost.exe	89
PID 1276 wrote to memory of 432	1276	svchost.exe	89
PID 1276 wrote to memory of 892	1276	svchost.exe	90
PID 1276 wrote to memory of 892	1276	svchost.exe	90
PID 1276 wrote to memory of 892	1276	svchost.exe	90
PID 1276 wrote to memory of 892	1276	svchost.exe	90

C:\Users\Admin\AppData\Local\Temp\PURCHASE_ORDER.exe
"C:\Users\Admin\AppData\Local\Temp\PURCHASE_ORDER.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4524
- C:\Users\Admin\AppData\Local\directory\PO.exe
  "C:\Users\Admin\AppData\Local\Temp\PURCHASE_ORDER.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:1880
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\PURCHASE_ORDER.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1276
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\ojelfvvzdglgxibflhbtzril"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2324
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\zljdfngszodthwpjurovkwduwgg"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:432
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\bgwogyrunwvykdlvlcawnjplfvqxrw"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:892

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
0d1c55127a674661588ddf2cbb1cd837

SHA1
6c4ac53d91d74d7f4526bd76d273d570c60b4a06

SHA256
9726dab87e544ab275015aed64ac8c54c7fde37475f395f63a125941a69a4dce

SHA512
88579aed97fc48166af505b544b425ade632f85ea1ef13e6d1e1e43e8899bae2979032ae21e0dc9b3cab183fe49a9d3582a7142fc36d1ba6ea7cc389ea6da16b

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

Filesize
4KB

MD5
7aca43b2800ceb18b3ed2326532545de

SHA1
d4cf207ef85bd749d59c1cb27a09c167ee21523a

SHA256
3d9f8622d97587fd84d3d0560a50ab38e5f894fe4b5bcaa34279643fdaaeb480

SHA512
0e002e6b8d965c227d9b1aa7c0251619c787ec7717e59667e756e5815e3666a955ea397eb148a1ed6bb7d8045727e4efa656a103f14bc70a03b03f0c91283c2f

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

Filesize
1.6MB

MD5
ce5790a8c9abff9f6e605373f64cb9d6

SHA1
38952bb5ce924019cec324793cc4d3c8307af4fa

SHA256
42935d2557a1d94823d32a2d9e6017a33f961b9e672292beed123d4b41c81c20

SHA512
7d1cbbdcc179f52faa6513571f9ccaf622655f1560d24902508b03d04a9f2fa3446d5bb7f4a1b9cc46944778c0b9c17630ea7061206d2d0e0da92cc13acc16b6

Download Submit
memory/432-28-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/432-33-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/432-39-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/432-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/892-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/892-36-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/892-37-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1276-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-46-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1276-50-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1276-49-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1276-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1276-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1880-10-0x0000000004150000-0x0000000004550000-memory.dmp

Filesize
4.0MB

Download
memory/2324-44-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2324-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2324-34-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2324-38-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2324-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4524-2-0x0000000004530000-0x0000000004930000-memory.dmp

Filesize
4.0MB

Download