remcos | 9b9ba6e3df79c2acd5ecdb46d3fb5f4828bcad17b899841fda48bef82f7ab1a1

Analysis

max time kernel
148s
max time network
151s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
10/07/2024, 05:44

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General

Target
ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe
Size 992KB
Sample240710-ge513ssamd
SHA256 9b9ba6e3df79c2acd5ecdb46d3fb5f4828bcad17b899841fda48bef82f7ab1a1
MD5 ef2d9336dfa5c1f0ef89610650e1230e
SHA1 75168fd533fc98070f38502af6533089e998b254
SHA512 3e01ff1b5a49eeb19fc7f39588593dced8f408dc4287099e11fa59adf8efe9e6a8ca9f93616242010f3169c28e1898b8ce8b03ea96799b9209a8109dac5df72f
SSDEEP 24576:ifECyYTr5FrHZ4VodWZ0ySu/SkqMln85ieJPm8WByRmMo:gyYxR6VL0yd/62ojJuUA
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost collection 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

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2312-76-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2648-74-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral1/memory/2648-74-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2312-76-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/920-77-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft

Executes dropped EXE 6 IoCs

pid	Process
2632	Adobe.exe
2440	Adobe.exe
2648	Adobe.exe
2168	Adobe.exe
2312	Adobe.exe
920	Adobe.exe

Loads dropped DLL 1 IoCs

pid	Process
2768	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.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-1-5-21-2212144002-1172735686-1556890956-1000\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-1-5-21-2212144002-1172735686-1556890956-1000\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
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 2936 set thread context of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2632 set thread context of 2440	2632	Adobe.exe	34
PID 2440 set thread context of 2648	2440	Adobe.exe	36
PID 2440 set thread context of 2312	2440	Adobe.exe	38
PID 2440 set thread context of 920	2440	Adobe.exe	39

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe
2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe
2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe
2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe
2648	Adobe.exe
2648	Adobe.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2440	Adobe.exe
2440	Adobe.exe
2440	Adobe.exe
2440	Adobe.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe
Token: SeDebugPrivilege	920	Adobe.exe

Suspicious use of WriteProcessMemory 57 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 2916	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	30
PID 2936 wrote to memory of 2916	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	30
PID 2936 wrote to memory of 2916	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	30
PID 2936 wrote to memory of 2916	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	30
PID 2936 wrote to memory of 1072	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	31
PID 2936 wrote to memory of 1072	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	31
PID 2936 wrote to memory of 1072	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	31
PID 2936 wrote to memory of 1072	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	31
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2936 wrote to memory of 2768	2936	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	32
PID 2768 wrote to memory of 2632	2768	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	33
PID 2768 wrote to memory of 2632	2768	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	33
PID 2768 wrote to memory of 2632	2768	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	33
PID 2768 wrote to memory of 2632	2768	ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe	33
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2632 wrote to memory of 2440	2632	Adobe.exe	34
PID 2440 wrote to memory of 2648	2440	Adobe.exe	36
PID 2440 wrote to memory of 2648	2440	Adobe.exe	36
PID 2440 wrote to memory of 2648	2440	Adobe.exe	36
PID 2440 wrote to memory of 2648	2440	Adobe.exe	36
PID 2440 wrote to memory of 2648	2440	Adobe.exe	36
PID 2440 wrote to memory of 2168	2440	Adobe.exe	37
PID 2440 wrote to memory of 2168	2440	Adobe.exe	37
PID 2440 wrote to memory of 2168	2440	Adobe.exe	37
PID 2440 wrote to memory of 2168	2440	Adobe.exe	37
PID 2440 wrote to memory of 2312	2440	Adobe.exe	38
PID 2440 wrote to memory of 2312	2440	Adobe.exe	38
PID 2440 wrote to memory of 2312	2440	Adobe.exe	38
PID 2440 wrote to memory of 2312	2440	Adobe.exe	38
PID 2440 wrote to memory of 2312	2440	Adobe.exe	38
PID 2440 wrote to memory of 920	2440	Adobe.exe	39
PID 2440 wrote to memory of 920	2440	Adobe.exe	39
PID 2440 wrote to memory of 920	2440	Adobe.exe	39
PID 2440 wrote to memory of 920	2440	Adobe.exe	39
PID 2440 wrote to memory of 920	2440	Adobe.exe	39

C:\Users\Admin\AppData\Local\Temp\ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe
"C:\Users\Admin\AppData\Local\Temp\ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Users\Admin\AppData\Local\Temp\ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe
  "C:\Users\Admin\AppData\Local\Temp\ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe"
  2⤵
  PID:2916
- C:\Users\Admin\AppData\Local\Temp\ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe
  "C:\Users\Admin\AppData\Local\Temp\ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe"
  2⤵
  PID:1072
- C:\Users\Admin\AppData\Local\Temp\ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe
  "C:\Users\Admin\AppData\Local\Temp\ISF 10+2 Form+VGM - MX-M354N_20240709_134303.scr.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2768
- - C:\ProgramData\Adobe\Adobe.exe
    "C:\ProgramData\Adobe\Adobe.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2632
  - - C:\ProgramData\Adobe\Adobe.exe
      "C:\ProgramData\Adobe\Adobe.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:2440
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\cvqtjkpcopqyhlvgpzajwwpdmjfsdni"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        
        PID:2648
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\npvl"
        5⤵
        Executes dropped EXE
        
        PID:2168
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\npvl"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        
        PID:2312
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\xrbeknk"
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:920

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

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

cvqtjkpcopqyhlvgpzajwwpdmjfsdni

Path C:\Users\Admin\AppData\Local\Temp\cvqtjkpcopqyhlvgpzajwwpdmjfsdni
Size 2B
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
MD5 SHA1 SHA512

Submit Download

Adobe.exe

Path \ProgramData\Adobe\Adobe.exe
Size 992KB
SHA256 9b9ba6e3df79c2acd5ecdb46d3fb5f4828bcad17b899841fda48bef82f7ab1a1
MD5 ef2d9336dfa5c1f0ef89610650e1230e
SHA1 75168fd533fc98070f38502af6533089e998b254
SHA512 3e01ff1b5a49eeb19fc7f39588593dced8f408dc4287099e11fa59adf8efe9e6a8ca9f93616242010f3169c28e1898b8ce8b03ea96799b9209a8109dac5df72f
SSDEEP 24576:ifECyYTr5FrHZ4VodWZ0ySu/SkqMln85ieJPm8WByRmMo:gyYxR6VL0yd/62ojJuUA
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/920-77-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/920-72-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/920-75-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/2312-70-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2312-76-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2312-68-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2440-55-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-50-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2440-93-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-92-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-91-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-90-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-89-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-88-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-87-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/2440-86-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/2440-83-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/2440-59-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-58-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-57-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-56-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-53-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-61-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2440-54-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2632-31-0x00000000749AE000-0x00000000749AF000-memory.dmp

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memory/2632-32-0x0000000001090000-0x0000000001188000-memory.dmp

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memory/2648-63-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2648-66-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2648-74-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2648-62-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2768-29-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2768-9-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2768-8-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2768-21-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2768-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2768-22-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2768-16-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2768-15-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2768-14-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2768-12-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2768-13-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2768-11-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2768-20-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2936-5-0x00000000005E0000-0x00000000005EE000-memory.dmp

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memory/2936-1-0x00000000001F0000-0x00000000002E8000-memory.dmp

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memory/2936-2-0x00000000749A0000-0x000000007508E000-memory.dmp

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memory/2936-3-0x00000000003E0000-0x00000000003F2000-memory.dmp

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memory/2936-4-0x00000000005D0000-0x00000000005D8000-memory.dmp

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memory/2936-0-0x00000000749AE000-0x00000000749AF000-memory.dmp

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memory/2936-6-0x00000000051C0000-0x0000000005282000-memory.dmp

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memory/2936-33-0x00000000749A0000-0x000000007508E000-memory.dmp

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