remcos | 42935d2557a1d94823d32a2d9e6017a33f961b9e672292beed123d4b41c81c20

Analysis

max time kernel
149s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10/10/2024, 08:37

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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/2788-47-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/532-49-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/904-48-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/532-43-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/904-42-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/904-54-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/532-57-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/532-49-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/532-43-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/532-57-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/904-48-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/904-42-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/904-54-0x0000000000400000-0x0000000000478000-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
2700	PO.exe

Loads dropped DLL 1 IoCs

pid	Process
880	PURCHASE_ORDER.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\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/0x0008000000016c73-4.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2700 set thread context of 2748	2700	PO.exe	31
PID 2748 set thread context of 904	2748	svchost.exe	33
PID 2748 set thread context of 532	2748	svchost.exe	34
PID 2748 set thread context of 2788	2748	svchost.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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
904	svchost.exe
904	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2700	PO.exe
2748	svchost.exe
2748	svchost.exe
2748	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2788	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2748	svchost.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 880 wrote to memory of 2700	880	PURCHASE_ORDER.exe	30
PID 880 wrote to memory of 2700	880	PURCHASE_ORDER.exe	30
PID 880 wrote to memory of 2700	880	PURCHASE_ORDER.exe	30
PID 880 wrote to memory of 2700	880	PURCHASE_ORDER.exe	30
PID 2700 wrote to memory of 2748	2700	PO.exe	31
PID 2700 wrote to memory of 2748	2700	PO.exe	31
PID 2700 wrote to memory of 2748	2700	PO.exe	31
PID 2700 wrote to memory of 2748	2700	PO.exe	31
PID 2700 wrote to memory of 2748	2700	PO.exe	31
PID 2748 wrote to memory of 904	2748	svchost.exe	33
PID 2748 wrote to memory of 904	2748	svchost.exe	33
PID 2748 wrote to memory of 904	2748	svchost.exe	33
PID 2748 wrote to memory of 904	2748	svchost.exe	33
PID 2748 wrote to memory of 904	2748	svchost.exe	33
PID 2748 wrote to memory of 532	2748	svchost.exe	34
PID 2748 wrote to memory of 532	2748	svchost.exe	34
PID 2748 wrote to memory of 532	2748	svchost.exe	34
PID 2748 wrote to memory of 532	2748	svchost.exe	34
PID 2748 wrote to memory of 532	2748	svchost.exe	34
PID 2748 wrote to memory of 2788	2748	svchost.exe	35
PID 2748 wrote to memory of 2788	2748	svchost.exe	35
PID 2748 wrote to memory of 2788	2748	svchost.exe	35
PID 2748 wrote to memory of 2788	2748	svchost.exe	35
PID 2748 wrote to memory of 2788	2748	svchost.exe	35

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:880
- 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:2700
- - 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:2748
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\ydcxqgt"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:904
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\jyiprqezuw"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:532
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\tanarjpaiexbmw"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:2788

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
bba8289e8d6e6cbcc29c5642dde7de1f

SHA1
6b9a0c41a9c7d9c9601af1d41974b96dc9204d40

SHA256
4c470e9429d92ef642be0ed33b0c50ae522a690203f6775ab8b432d13da0d969

SHA512
781d319241067ade07c9d7e6e6b605ed750d918d2949a6d4167dd89a59a0f2461d49bc58f58b7d85f70e5b10e628e9043e58de972f67fd4b35467ddba8eeebf4

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

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/532-49-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/532-57-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/532-39-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/532-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/532-43-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/880-2-0x0000000003AF0000-0x0000000003EF0000-memory.dmp

Filesize
4.0MB

Download
memory/904-48-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/904-42-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/904-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/904-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/904-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/904-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2700-12-0x0000000003FC0000-0x00000000043C0000-memory.dmp

Filesize
4.0MB

Download
memory/2748-62-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2748-61-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2748-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-58-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2748-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2748-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-46-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2788-47-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2788-45-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download