remcos | c0a5183fb178f4734580069f8697419dd8883a88bf69e57a2edb109d15d5cc9d

Analysis

max time kernel
156s
max time network
161s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
13/01/2023, 01:02

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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 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1896-90-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/1896-94-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/904-91-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/904-92-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 5 IoCs

resource	yara_rule
behavioral1/memory/1612-89-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1896-90-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/904-91-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/904-92-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1896-94-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft

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-1-5-21-1214520366-621468234-4062160515-1000\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-1-5-21-1214520366-621468234-4062160515-1000\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 1108 set thread context of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 944 set thread context of 904	944	514ce89a033c910d8243090b926c741cea01d27f.exe	33
PID 944 set thread context of 1896	944	514ce89a033c910d8243090b926c741cea01d27f.exe	34
PID 944 set thread context of 1612	944	514ce89a033c910d8243090b926c741cea01d27f.exe	35

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 3 IoCs

pid	Process
1324	powershell.exe
904	514ce89a033c910d8243090b926c741cea01d27f.exe
904	514ce89a033c910d8243090b926c741cea01d27f.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
944	514ce89a033c910d8243090b926c741cea01d27f.exe
944	514ce89a033c910d8243090b926c741cea01d27f.exe
944	514ce89a033c910d8243090b926c741cea01d27f.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1108	514ce89a033c910d8243090b926c741cea01d27f.exe
Token: SeDebugPrivilege	1324	powershell.exe
Token: SeDebugPrivilege	1612	514ce89a033c910d8243090b926c741cea01d27f.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1108 wrote to memory of 1324	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	28
PID 1108 wrote to memory of 1324	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	28
PID 1108 wrote to memory of 1324	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	28
PID 1108 wrote to memory of 1324	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	28
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 1108 wrote to memory of 944	1108	514ce89a033c910d8243090b926c741cea01d27f.exe	31
PID 944 wrote to memory of 904	944	514ce89a033c910d8243090b926c741cea01d27f.exe	33
PID 944 wrote to memory of 904	944	514ce89a033c910d8243090b926c741cea01d27f.exe	33
PID 944 wrote to memory of 904	944	514ce89a033c910d8243090b926c741cea01d27f.exe	33
PID 944 wrote to memory of 904	944	514ce89a033c910d8243090b926c741cea01d27f.exe	33
PID 944 wrote to memory of 904	944	514ce89a033c910d8243090b926c741cea01d27f.exe	33
PID 944 wrote to memory of 1896	944	514ce89a033c910d8243090b926c741cea01d27f.exe	34
PID 944 wrote to memory of 1896	944	514ce89a033c910d8243090b926c741cea01d27f.exe	34
PID 944 wrote to memory of 1896	944	514ce89a033c910d8243090b926c741cea01d27f.exe	34
PID 944 wrote to memory of 1896	944	514ce89a033c910d8243090b926c741cea01d27f.exe	34
PID 944 wrote to memory of 1896	944	514ce89a033c910d8243090b926c741cea01d27f.exe	34
PID 944 wrote to memory of 1612	944	514ce89a033c910d8243090b926c741cea01d27f.exe	35
PID 944 wrote to memory of 1612	944	514ce89a033c910d8243090b926c741cea01d27f.exe	35
PID 944 wrote to memory of 1612	944	514ce89a033c910d8243090b926c741cea01d27f.exe	35
PID 944 wrote to memory of 1612	944	514ce89a033c910d8243090b926c741cea01d27f.exe	35
PID 944 wrote to memory of 1612	944	514ce89a033c910d8243090b926c741cea01d27f.exe	35

C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe
"C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1108
- 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:1324
- 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:944
- - C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe
    C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe /stext "C:\Users\Admin\AppData\Local\Temp\mupoyxlb"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:904
- - C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe
    C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe /stext "C:\Users\Admin\AppData\Local\Temp\pwugzqwduzxb"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1896
- - C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe
    C:\Users\Admin\AppData\Local\Temp\514ce89a033c910d8243090b926c741cea01d27f.exe /stext "C:\Users\Admin\AppData\Local\Temp\zrazaigxihpoyie"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1612

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

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\mupoyxlb

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/904-91-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/904-92-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/944-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/944-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/944-98-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/944-99-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/944-95-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/944-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/944-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/944-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/944-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/944-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/944-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/944-100-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/944-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/944-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/944-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/944-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1108-58-0x000000000C9E0000-0x000000000CA72000-memory.dmp

Filesize
584KB

Download
memory/1108-57-0x0000000008400000-0x000000000847E000-memory.dmp

Filesize
504KB

Download
memory/1108-54-0x00000000011C0000-0x00000000011C8000-memory.dmp

Filesize
32KB

Download
memory/1108-56-0x000000000C8D0000-0x000000000C9D8000-memory.dmp

Filesize
1.0MB

Download
memory/1108-55-0x0000000076391000-0x0000000076393000-memory.dmp

Filesize
8KB

Download
memory/1324-63-0x000000006E8C0000-0x000000006EE6B000-memory.dmp

Filesize
5.7MB

Download
memory/1324-62-0x000000006E8C0000-0x000000006EE6B000-memory.dmp

Filesize
5.7MB

Download
memory/1324-61-0x000000006E8C0000-0x000000006EE6B000-memory.dmp

Filesize
5.7MB

Download
memory/1612-89-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1896-90-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1896-94-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download