remcos | 7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b

Analysis

max time kernel
148s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-12-2024 03:06

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General

Target

7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.exe
Size

1.3MB
MD5

c3f4606a2dee3f372af2108340951322
SHA1

dad640bb0afeb3f348ef692fe271e7e0ca1eab45
SHA256

7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b
SHA512

6a3d74cbf3697835a2280fe58f815fe7de6d5f23f39290c23a98b63bd8305a602af166598413a1ec2af68a6e30bc8b157f1d7a8fcb9489f1138a95a8c66ee5ba
SSDEEP

24576:4qDEvCTbMWu7rQYlBQcBiT6rprG8aQmBghvjtOSI7JEGr/m:4TvC/MTQYxsWR7aQIgfOn

Score

10^/10

remcos remotehost collection discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

154.216.17.190:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-3W6OXK
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
Remcos family
remcos

Detected Nirsoft tools 9 IoCs

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

resource	yara_rule
behavioral1/memory/2580-30-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2564-39-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2580-38-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2536-37-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2564-40-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2564-36-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2536-29-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2580-45-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2536-48-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2536-37-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2536-29-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2536-48-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2580-30-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2580-38-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2580-45-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2260 set thread context of 2796	2260	7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.exe	30
PID 2796 set thread context of 2580	2796	svchost.exe	32
PID 2796 set thread context of 2536	2796	svchost.exe	33
PID 2796 set thread context of 2564	2796	svchost.exe	34

System Location Discovery: System Language Discovery 1 TTPs 5 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	7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.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
2580	svchost.exe
2580	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2260	7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2564	svchost.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 2796	2260	7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.exe	30
PID 2260 wrote to memory of 2796	2260	7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.exe	30
PID 2260 wrote to memory of 2796	2260	7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.exe	30
PID 2260 wrote to memory of 2796	2260	7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.exe	30
PID 2260 wrote to memory of 2796	2260	7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.exe	30
PID 2796 wrote to memory of 2580	2796	svchost.exe	32
PID 2796 wrote to memory of 2580	2796	svchost.exe	32
PID 2796 wrote to memory of 2580	2796	svchost.exe	32
PID 2796 wrote to memory of 2580	2796	svchost.exe	32
PID 2796 wrote to memory of 2580	2796	svchost.exe	32
PID 2796 wrote to memory of 2536	2796	svchost.exe	33
PID 2796 wrote to memory of 2536	2796	svchost.exe	33
PID 2796 wrote to memory of 2536	2796	svchost.exe	33
PID 2796 wrote to memory of 2536	2796	svchost.exe	33
PID 2796 wrote to memory of 2536	2796	svchost.exe	33
PID 2796 wrote to memory of 2564	2796	svchost.exe	34
PID 2796 wrote to memory of 2564	2796	svchost.exe	34
PID 2796 wrote to memory of 2564	2796	svchost.exe	34
PID 2796 wrote to memory of 2564	2796	svchost.exe	34
PID 2796 wrote to memory of 2564	2796	svchost.exe	34

C:\Users\Admin\AppData\Local\Temp\7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.exe
"C:\Users\Admin\AppData\Local\Temp\7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\7135dd0f5ab3268a874f61397f34be3d83a7e7b4620be22df6ce6fb1c2fffd7b.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\avcfbxrjkuotqri"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2580
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\kphycpcdycggtxwitx"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2536
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\nrmqdinemkylddtmchpsg"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2564

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\avcfbxrjkuotqri

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/2260-6-0x0000000000C50000-0x0000000001050000-memory.dmp

Filesize
4.0MB

Download
memory/2536-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2536-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2536-37-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2536-24-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2536-27-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2564-33-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2564-36-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2564-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2564-39-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2564-40-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2580-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2580-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2580-21-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2580-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2580-38-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2580-45-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2796-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-49-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2796-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-10-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-53-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2796-52-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2796-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2796-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download