remcos | 5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-09-2024 01:21

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General

Target

5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
Size

900KB
MD5

115d4b6929a1f51b902f5d59cffd3157
SHA1

bad3a42297e74d234fe74cb8af7de321f840a8f5
SHA256

5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae
SHA512

57384aa06de685696985d2c3fa67f35594d0e1e0dfbe21c487a9804280394dc805e65638bd1e3de15922e821d9d83e5540d73ae61ee601520896196e2f9734be
SSDEEP

24576:8aXj14fNdPYDtWPHV9yyoeHzQpnVsOA9tOW:8HTwc3ro0CVO9t9

Score

10^/10

remcos remotehost collection credential_access discovery persistence rat spyware stealer

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
Adobe.exe
copy_folder
Adobe
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Adobe-OTOIRK
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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 3 IoCs

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

resource	yara_rule
behavioral1/memory/796-83-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2368-81-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1760-80-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/796-83-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/1760-80-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Executes dropped EXE 6 IoCs

pid	Process
2804	Adobe.exe
2684	Adobe.exe
1760	Adobe.exe
796	Adobe.exe
2060	Adobe.exe
2368	Adobe.exe

Loads dropped DLL 1 IoCs

pid	Process
2880	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.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
T1552.001

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	Adobe.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 2316 set thread context of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2804 set thread context of 2684	2804	Adobe.exe	33
PID 2684 set thread context of 1760	2684	Adobe.exe	35
PID 2684 set thread context of 796	2684	Adobe.exe	37
PID 2684 set thread context of 2368	2684	Adobe.exe	38

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 7 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	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1760	Adobe.exe
1760	Adobe.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2684	Adobe.exe
2684	Adobe.exe
2684	Adobe.exe
2684	Adobe.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	Adobe.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2316 wrote to memory of 2880	2316	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	31
PID 2880 wrote to memory of 2804	2880	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	32
PID 2880 wrote to memory of 2804	2880	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	32
PID 2880 wrote to memory of 2804	2880	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	32
PID 2880 wrote to memory of 2804	2880	5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe	32
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2804 wrote to memory of 2684	2804	Adobe.exe	33
PID 2684 wrote to memory of 1760	2684	Adobe.exe	35
PID 2684 wrote to memory of 1760	2684	Adobe.exe	35
PID 2684 wrote to memory of 1760	2684	Adobe.exe	35
PID 2684 wrote to memory of 1760	2684	Adobe.exe	35
PID 2684 wrote to memory of 1760	2684	Adobe.exe	35
PID 2684 wrote to memory of 2060	2684	Adobe.exe	36
PID 2684 wrote to memory of 2060	2684	Adobe.exe	36
PID 2684 wrote to memory of 2060	2684	Adobe.exe	36
PID 2684 wrote to memory of 2060	2684	Adobe.exe	36
PID 2684 wrote to memory of 796	2684	Adobe.exe	37
PID 2684 wrote to memory of 796	2684	Adobe.exe	37
PID 2684 wrote to memory of 796	2684	Adobe.exe	37
PID 2684 wrote to memory of 796	2684	Adobe.exe	37
PID 2684 wrote to memory of 796	2684	Adobe.exe	37
PID 2684 wrote to memory of 2368	2684	Adobe.exe	38
PID 2684 wrote to memory of 2368	2684	Adobe.exe	38
PID 2684 wrote to memory of 2368	2684	Adobe.exe	38
PID 2684 wrote to memory of 2368	2684	Adobe.exe	38
PID 2684 wrote to memory of 2368	2684	Adobe.exe	38

C:\Users\Admin\AppData\Local\Temp\5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
"C:\Users\Admin\AppData\Local\Temp\5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Users\Admin\AppData\Local\Temp\5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe
  "C:\Users\Admin\AppData\Local\Temp\5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2880
- - C:\ProgramData\Adobe\Adobe.exe
    "C:\ProgramData\Adobe\Adobe.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2804
  - - C:\ProgramData\Adobe\Adobe.exe
      "C:\ProgramData\Adobe\Adobe.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:2684
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\sygyemepoivvpo"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:1760
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\ctmrfeoikqnizukrp"
        5⤵
        Executes dropped EXE
        
        PID:2060
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\ctmrfeoikqnizukrp"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:796
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\fvrjfwzkxyfnbiyvyskr"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:2368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

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\sygyemepoivvpo

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\ProgramData\Adobe\Adobe.exe

Filesize
900KB

MD5
115d4b6929a1f51b902f5d59cffd3157

SHA1
bad3a42297e74d234fe74cb8af7de321f840a8f5

SHA256
5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae

SHA512
57384aa06de685696985d2c3fa67f35594d0e1e0dfbe21c487a9804280394dc805e65638bd1e3de15922e821d9d83e5540d73ae61ee601520896196e2f9734be

Download Submit
memory/796-72-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/796-71-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/796-83-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/796-82-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1760-69-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1760-73-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1760-80-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2316-0-0x000000007489E000-0x000000007489F000-memory.dmp

Filesize
4KB

Download
memory/2316-6-0x0000000005380000-0x0000000005440000-memory.dmp

Filesize
768KB

Download
memory/2316-1-0x0000000001000000-0x00000000010E8000-memory.dmp

Filesize
928KB

Download
memory/2316-2-0x0000000074890000-0x0000000074F7E000-memory.dmp

Filesize
6.9MB

Download
memory/2316-3-0x0000000000680000-0x0000000000690000-memory.dmp

Filesize
64KB

Download
memory/2316-30-0x0000000074890000-0x0000000074F7E000-memory.dmp

Filesize
6.9MB

Download
memory/2316-4-0x000000007489E000-0x000000007489F000-memory.dmp

Filesize
4KB

Download
memory/2316-5-0x0000000074890000-0x0000000074F7E000-memory.dmp

Filesize
6.9MB

Download
memory/2368-81-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2368-79-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2368-77-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2684-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2684-91-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2684-89-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2684-90-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2684-94-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2684-56-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2684-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2684-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2684-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2684-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2684-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2684-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2684-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2804-39-0x000000007484E000-0x000000007484F000-memory.dmp

Filesize
4KB

Download
memory/2804-37-0x000000007484E000-0x000000007484F000-memory.dmp

Filesize
4KB

Download
memory/2804-38-0x0000000000CE0000-0x0000000000DC8000-memory.dmp

Filesize
928KB

Download
memory/2880-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2880-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2880-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2880-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2880-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2880-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2880-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2880-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2880-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2880-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2880-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2880-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2880-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download