remcos | b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 14:11

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General

Target

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
Size

1.3MB
MD5

60561cff1dee1f6bab79d28ab8a84dc3
SHA1

abd6f2841675755c088b4d70dee090225caa73db
SHA256

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e
SHA512

ab073292660e415fbc8181fe7fefb83c3cdb92531fd4812742f7143dc31a75f1ab8b0e72279d02ffef137956502aa5c13a8e78ed1894ffd648de74b11c946fff
SSDEEP

24576:4Mbni723L73/gXFxoYXpmTvCkV0uf5ZmH1OvAwP0Cwbn:43a3L73ou7vCkCua1RwML

Score

10^/10

remcos remotehost collection rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

104.250.180.178:7902

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Microsoft .exe
copy_folder
Microsoft
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
Microsoft -QUCX7D
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

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/4904-40-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/3640-32-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2012-34-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3640-32-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4904-40-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

AddInProcess32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	AddInProcess32.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exeAddInProcess32.exe

description	pid	process	target process
PID 3552 set thread context of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 4388 set thread context of 3640	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 set thread context of 4904	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 set thread context of 2012	4388	AddInProcess32.exe	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exeAddInProcess32.exeAddInProcess32.exe

pid	process
3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
3640	AddInProcess32.exe
3640	AddInProcess32.exe
2012	AddInProcess32.exe
2012	AddInProcess32.exe
3640	AddInProcess32.exe
3640	AddInProcess32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

AddInProcess32.exe

pid process

4388 AddInProcess32.exe
4388 AddInProcess32.exe
4388 AddInProcess32.exe
4388 AddInProcess32.exe
4388 AddInProcess32.exe
4388 AddInProcess32.exe

pid	process
4388	AddInProcess32.exe
4388	AddInProcess32.exe
4388	AddInProcess32.exe
4388	AddInProcess32.exe
4388	AddInProcess32.exe
4388	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exeAddInProcess32.exe

description	pid	process
Token: SeDebugPrivilege	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
Token: SeDebugPrivilege	2012	AddInProcess32.exe

Suspicious use of WriteProcessMemory 45 IoCs

Processes:

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exeAddInProcess32.exe

description	pid	process	target process
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4128	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 3552 wrote to memory of 4388	3552	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 4388 wrote to memory of 648	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 648	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 648	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 4108	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 4108	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 4108	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 3720	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 3720	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 3720	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 3640	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 3640	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 3640	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 3640	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 4904	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 4904	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 4904	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 4904	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 2012	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 2012	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 2012	4388	AddInProcess32.exe	AddInProcess32.exe
PID 4388 wrote to memory of 2012	4388	AddInProcess32.exe	AddInProcess32.exe

C:\Users\Admin\AppData\Local\Temp\b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
"C:\Users\Admin\AppData\Local\Temp\b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3552
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  PID:4128
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4388
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\fxyadfprcyezicycrulgmxzoolja"
    3⤵
    PID:648
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\fxyadfprcyezicycrulgmxzoolja"
    3⤵
    PID:4108
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\fxyadfprcyezicycrulgmxzoolja"
    3⤵
    PID:3720
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\fxyadfprcyezicycrulgmxzoolja"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:3640
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\hrdteyakqgwetrmgaeyixjufwssbjxs"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:4904
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\rmjmfqsmmoorvxjkjpsbawpofzkkkijxjs"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
4KB

MD5
365f45018b7bcc98591979d6c4b23752

SHA1
073aff125450845105f5daa7d0e7cc24ee8bbca5

SHA256
27be905cdbf87c23851d00d61afd5fcfe5c72b1de227ac7d8c0dc5c7583c9a6e

SHA512
4bd0d2266c624b9ad40e9ba6cb4d63debd12f46f5c27afae3bfc20e3e7f5e9f9c88f83151166324223c5889034a4d70652cf747f6943af011191c64c28e18703

Download Submit
memory/2012-33-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2012-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2012-31-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3552-8-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/3552-11-0x0000000007D60000-0x0000000007D7A000-memory.dmp

Filesize
104KB

Download
memory/3552-6-0x0000000005AC0000-0x0000000005B5C000-memory.dmp

Filesize
624KB

Download
memory/3552-7-0x0000000006BC0000-0x0000000006C04000-memory.dmp

Filesize
272KB

Download
memory/3552-4-0x00000000058A0000-0x00000000058AA000-memory.dmp

Filesize
40KB

Download
memory/3552-9-0x0000000074D0E000-0x0000000074D0F000-memory.dmp

Filesize
4KB

Download
memory/3552-10-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/3552-5-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/3552-12-0x000000000A3D0000-0x000000000A3D6000-memory.dmp

Filesize
24KB

Download
memory/3552-3-0x0000000005800000-0x0000000005892000-memory.dmp

Filesize
584KB

Download
memory/3552-0-0x0000000074D0E000-0x0000000074D0F000-memory.dmp

Filesize
4KB

Download
memory/3552-2-0x0000000005CD0000-0x0000000006274000-memory.dmp

Filesize
5.6MB

Download
memory/3552-1-0x0000000000F50000-0x00000000010AC000-memory.dmp

Filesize
1.4MB

Download
memory/3552-18-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/3640-29-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3640-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3640-43-0x0000000074CF0000-0x0000000074D7D000-memory.dmp

Filesize
564KB

Download
memory/3640-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3640-35-0x0000000074CF0000-0x0000000074D7D000-memory.dmp

Filesize
564KB

Download
memory/4388-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-49-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4388-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4388-45-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4388-48-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4388-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4904-26-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4904-40-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4904-30-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4904-41-0x0000000074CF0000-0x0000000074D7D000-memory.dmp

Filesize
564KB

Download
memory/4904-36-0x0000000074CF0000-0x0000000074D7D000-memory.dmp

Filesize
564KB

Download