remcos | 42935d2557a1d94823d32a2d9e6017a33f961b9e672292beed123d4b41c81c20

Analysis

max time kernel
148s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 7 IoCs

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

resource	yara_rule
behavioral1/memory/3048-39-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/3052-44-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/3048-43-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/3052-40-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2132-46-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/3048-51-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/3052-64-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/3052-44-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/3052-40-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/3052-64-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/3048-39-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/3048-43-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/3048-51-0x0000000000400000-0x0000000000478000-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
2848	PO.exe

Loads dropped DLL 1 IoCs

pid	Process
2704	PURCHASE_ORDER.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0008000000016d92-4.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2848 set thread context of 2960	2848	PO.exe	31
PID 2960 set thread context of 3048	2960	svchost.exe	32
PID 2960 set thread context of 3052	2960	svchost.exe	33
PID 2960 set thread context of 2132	2960	svchost.exe	34

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	PURCHASE_ORDER.exe
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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3048	svchost.exe
3048	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2848	PO.exe
2960	svchost.exe
2960	svchost.exe
2960	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2132	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2960	svchost.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 2848	2704	PURCHASE_ORDER.exe	30
PID 2704 wrote to memory of 2848	2704	PURCHASE_ORDER.exe	30
PID 2704 wrote to memory of 2848	2704	PURCHASE_ORDER.exe	30
PID 2704 wrote to memory of 2848	2704	PURCHASE_ORDER.exe	30
PID 2848 wrote to memory of 2960	2848	PO.exe	31
PID 2848 wrote to memory of 2960	2848	PO.exe	31
PID 2848 wrote to memory of 2960	2848	PO.exe	31
PID 2848 wrote to memory of 2960	2848	PO.exe	31
PID 2848 wrote to memory of 2960	2848	PO.exe	31
PID 2960 wrote to memory of 3048	2960	svchost.exe	32
PID 2960 wrote to memory of 3048	2960	svchost.exe	32
PID 2960 wrote to memory of 3048	2960	svchost.exe	32
PID 2960 wrote to memory of 3048	2960	svchost.exe	32
PID 2960 wrote to memory of 3048	2960	svchost.exe	32
PID 2960 wrote to memory of 3052	2960	svchost.exe	33
PID 2960 wrote to memory of 3052	2960	svchost.exe	33
PID 2960 wrote to memory of 3052	2960	svchost.exe	33
PID 2960 wrote to memory of 3052	2960	svchost.exe	33
PID 2960 wrote to memory of 3052	2960	svchost.exe	33
PID 2960 wrote to memory of 2132	2960	svchost.exe	34
PID 2960 wrote to memory of 2132	2960	svchost.exe	34
PID 2960 wrote to memory of 2132	2960	svchost.exe	34
PID 2960 wrote to memory of 2132	2960	svchost.exe	34
PID 2960 wrote to memory of 2132	2960	svchost.exe	34

C:\Users\Admin\AppData\Local\Temp\PURCHASE_ORDER.exe
"C:\Users\Admin\AppData\Local\Temp\PURCHASE_ORDER.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2704
- 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:2848
- - 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:2960
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\qfugkmxqrwmxtwq"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:3048
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\shhylehjfeekdcmyqh"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:3052
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\dbnjexslsnwpgracasppz"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:2132

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
f6f604fa23f8609be140e76c2417abb2

SHA1
2a3fe88b7be30a181eea779fb4e461df04a16564

SHA256
302799f23cf0ad3370f2604f4c7dc488c5a137b0212881b26e70be55d8412d2b

SHA512
4812d56702aa3586715b055f09e6f108d9a164c442d40eeb81a4d8b08a8b67bcd12d12b2139b5b7f7a0722d7a395bbd4635eb3cd0be3620496295557d2dc67ea

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

Filesize
1.6MB

MD5
ce5790a8c9abff9f6e605373f64cb9d6

SHA1
38952bb5ce924019cec324793cc4d3c8307af4fa

SHA256
42935d2557a1d94823d32a2d9e6017a33f961b9e672292beed123d4b41c81c20

SHA512
7d1cbbdcc179f52faa6513571f9ccaf622655f1560d24902508b03d04a9f2fa3446d5bb7f4a1b9cc46944778c0b9c17630ea7061206d2d0e0da92cc13acc16b6

Download Submit
memory/2132-46-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2132-41-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2132-42-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2132-45-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2704-2-0x0000000003AE0000-0x0000000003EE0000-memory.dmp

Filesize
4.0MB

Download
memory/2848-12-0x0000000003830000-0x0000000003C30000-memory.dmp

Filesize
4.0MB

Download
memory/2960-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2960-56-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2960-59-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2960-60-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2960-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3048-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3048-36-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3048-43-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3048-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3048-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3048-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3052-64-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3052-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3052-38-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3052-40-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3052-44-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download