remcos | c0a5183fb178f4734580069f8697419dd8883a88bf69e57a2edb109d15d5cc9d

Analysis

max time kernel
148s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
13/01/2023, 00:57

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General

Target

514ce89a033c910d8243090b926c741cea01d27f.exe
Size

8KB
MD5

aa6154b9872dcd75bcb87557a4fda5bb
SHA1

514ce89a033c910d8243090b926c741cea01d27f
SHA256

c0a5183fb178f4734580069f8697419dd8883a88bf69e57a2edb109d15d5cc9d
SHA512

1a06637debdbfc43a0940b18289ea8f9e6ff83b4ef69528e67f9515ad56c0ebeb147a1ef434be2188ac246790c24e9ad668eca108296e3432ed98d7957cdf3d6
SSDEEP

192:K1vFjl2DqyWLCOChmfnXLjWhLPdEmH5x8:K1vFjl2mpLCOCgfnXLjELmA5x

Score

10^/10

remcos 54345 collection persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

54345

195.133.40.168:54345

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
remcos
mouse_option
false
mutex
Rmc-XOSM7F
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
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

resource	yara_rule
behavioral2/memory/696-154-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2932-156-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2932-157-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 4 IoCs

resource	yara_rule
behavioral2/memory/696-154-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/2268-155-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2932-156-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2932-157-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	514ce89a033c910d8243090b926c741cea01d27f.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	514ce89a033c910d8243090b926c741cea01d27f.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Exbqzyawb = "\"C:\\Users\\Admin\\AppData\\Roaming\\Vsiibiypxa\\Exbqzyawb.exe\""	514ce89a033c910d8243090b926c741cea01d27f.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3812 set thread context of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 4348 set thread context of 2932	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	89
PID 4348 set thread context of 696	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	90
PID 4348 set thread context of 2268	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	91

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3928	powershell.exe
3928	powershell.exe
2932	514ce89a033c910d8243090b926c741cea01d27f.exe
2932	514ce89a033c910d8243090b926c741cea01d27f.exe
2268	514ce89a033c910d8243090b926c741cea01d27f.exe
2268	514ce89a033c910d8243090b926c741cea01d27f.exe
2932	514ce89a033c910d8243090b926c741cea01d27f.exe
2932	514ce89a033c910d8243090b926c741cea01d27f.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4348	514ce89a033c910d8243090b926c741cea01d27f.exe
4348	514ce89a033c910d8243090b926c741cea01d27f.exe
4348	514ce89a033c910d8243090b926c741cea01d27f.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3812	514ce89a033c910d8243090b926c741cea01d27f.exe
Token: SeDebugPrivilege	3928	powershell.exe
Token: SeDebugPrivilege	2268	514ce89a033c910d8243090b926c741cea01d27f.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3812 wrote to memory of 3928	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	85
PID 3812 wrote to memory of 3928	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	85
PID 3812 wrote to memory of 3928	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	85
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 3812 wrote to memory of 4348	3812	514ce89a033c910d8243090b926c741cea01d27f.exe	88
PID 4348 wrote to memory of 2932	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	89
PID 4348 wrote to memory of 2932	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	89
PID 4348 wrote to memory of 2932	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	89
PID 4348 wrote to memory of 2932	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	89
PID 4348 wrote to memory of 696	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	90
PID 4348 wrote to memory of 696	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	90
PID 4348 wrote to memory of 696	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	90
PID 4348 wrote to memory of 696	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	90
PID 4348 wrote to memory of 2268	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	91
PID 4348 wrote to memory of 2268	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	91
PID 4348 wrote to memory of 2268	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	91
PID 4348 wrote to memory of 2268	4348	514ce89a033c910d8243090b926c741cea01d27f.exe	91

C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe
"C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3812
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgA3AA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3928
- C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe
  C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4348
- - C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe
    C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe /stext "C:\Users\Admin\AppData\Local\Temp\bygeounc"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2932
- - C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe
    C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe /stext "C:\Users\Admin\AppData\Local\Temp\mslwomyvomj"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:696
- - C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe
    C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe /stext "C:\Users\Admin\AppData\Local\Temp\wmqppfjxcubxbr"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2268

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
4KB

MD5
07c14121728256ad56b1ef039a28e4a6

SHA1
0f39e1e02cd5e2b1b22d9e5470757ae13fe96738

SHA256
8d46702077d776b04085cbe5ce2f0e5971595ea4e11b025a215c4379e7fc18f8

SHA512
03d9113095e7b6143c4f99b131462fa451a9c2d7e841461603dace64bd6d525cb63d074384d2b3ff285a7183116f1715138beeb756fced9a6b1ad6fde36d4789

Download Submit
memory/696-154-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2268-155-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2932-157-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2932-156-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3812-132-0x0000000000650000-0x0000000000658000-memory.dmp

Filesize
32KB

Download
memory/3812-136-0x000000000C840000-0x000000000C862000-memory.dmp

Filesize
136KB

Download
memory/3812-135-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

Filesize
40KB

Download
memory/3812-134-0x0000000004F10000-0x0000000004FA2000-memory.dmp

Filesize
584KB

Download
memory/3812-133-0x0000000005570000-0x0000000005B14000-memory.dmp

Filesize
5.6MB

Download
memory/3928-139-0x0000000005130000-0x0000000005758000-memory.dmp

Filesize
6.2MB

Download
memory/3928-138-0x0000000002520000-0x0000000002556000-memory.dmp

Filesize
216KB

Download
memory/3928-141-0x00000000050C0000-0x0000000005126000-memory.dmp

Filesize
408KB

Download
memory/3928-140-0x0000000004FA0000-0x0000000005006000-memory.dmp

Filesize
408KB

Download
memory/3928-142-0x0000000005E40000-0x0000000005E5E000-memory.dmp

Filesize
120KB

Download
memory/3928-143-0x00000000074A0000-0x0000000007B1A000-memory.dmp

Filesize
6.5MB

Download
memory/3928-144-0x0000000006340000-0x000000000635A000-memory.dmp

Filesize
104KB

Download
memory/4348-150-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4348-149-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4348-148-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4348-147-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4348-146-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4348-159-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4348-163-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4348-162-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4348-164-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download