remcos | 5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3

General

Target

5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.exe
Size

483KB
MD5

e3f85d3db1a13a521b6dd6477298f9c5
SHA1

3f40142ffa5a2093a864446af3b80e0fb03f3bfd
SHA256

5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3
SHA512

8796e10b727da411729a7870aba47d238a3c7e72aada359f3431cee6e69dec839de3fabb54370b389356caabadb17f980ebfc8e6c376774f6acd00578a3407df
SSDEEP

6144:QXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZoAX0cNc5Gv:QX7tPMK8ctGe4Dzl4h2QnuPs/Zo5cv

Score

10^/10

remcos remotehost collection discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

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

Detected Nirsoft tools 8 IoCs

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

resource	yara_rule
behavioral1/memory/2544-23-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1508-28-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1508-29-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1508-32-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2600-24-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2544-17-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2544-37-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2600-40-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2600-24-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2600-40-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2544-23-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2544-17-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2544-37-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Executes dropped EXE 4 IoCs

pid	Process
2892	Adobe.exe
2544	Adobe.exe
2600	Adobe.exe
1508	Adobe.exe

Loads dropped DLL 2 IoCs

pid	Process
2628	5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.exe
2628	5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\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 3 IoCs

description	pid	Process	procid_target
PID 2892 set thread context of 2544	2892	Adobe.exe	32
PID 2892 set thread context of 2600	2892	Adobe.exe	33
PID 2892 set thread context of 1508	2892	Adobe.exe	34

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 5 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	5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.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
2544	Adobe.exe
2544	Adobe.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2892	Adobe.exe
2892	Adobe.exe
2892	Adobe.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1508	Adobe.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 2892	2628	5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.exe	30
PID 2628 wrote to memory of 2892	2628	5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.exe	30
PID 2628 wrote to memory of 2892	2628	5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.exe	30
PID 2628 wrote to memory of 2892	2628	5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.exe	30
PID 2892 wrote to memory of 2544	2892	Adobe.exe	32
PID 2892 wrote to memory of 2544	2892	Adobe.exe	32
PID 2892 wrote to memory of 2544	2892	Adobe.exe	32
PID 2892 wrote to memory of 2544	2892	Adobe.exe	32
PID 2892 wrote to memory of 2600	2892	Adobe.exe	33
PID 2892 wrote to memory of 2600	2892	Adobe.exe	33
PID 2892 wrote to memory of 2600	2892	Adobe.exe	33
PID 2892 wrote to memory of 2600	2892	Adobe.exe	33
PID 2892 wrote to memory of 1508	2892	Adobe.exe	34
PID 2892 wrote to memory of 1508	2892	Adobe.exe	34
PID 2892 wrote to memory of 1508	2892	Adobe.exe	34
PID 2892 wrote to memory of 1508	2892	Adobe.exe	34

C:\Users\Admin\AppData\Local\Temp\5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.exe
"C:\Users\Admin\AppData\Local\Temp\5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2628
- C:\ProgramData\Adobe\Adobe.exe
  "C:\ProgramData\Adobe\Adobe.exe"
  2⤵
  - 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:2892
- - C:\ProgramData\Adobe\Adobe.exe
    C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\zmglptfnqbqursrwvcpawmm"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2544
- - C:\ProgramData\Adobe\Adobe.exe
    C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\bgtdpdpoejihtyfamfbbhrhcwi"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2600
- - C:\ProgramData\Adobe\Adobe.exe
    C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\layoivaisramvnbevqovkdctepfop"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\ProgramData\Adobe\Adobe.exe

Filesize
483KB

MD5
e3f85d3db1a13a521b6dd6477298f9c5

SHA1
3f40142ffa5a2093a864446af3b80e0fb03f3bfd

SHA256
5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3

SHA512
8796e10b727da411729a7870aba47d238a3c7e72aada359f3431cee6e69dec839de3fabb54370b389356caabadb17f980ebfc8e6c376774f6acd00578a3407df

Download Submit
memory/1508-25-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1508-28-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1508-29-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1508-27-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1508-32-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2544-20-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2544-23-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2544-37-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2544-11-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2544-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2544-17-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2600-18-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2600-19-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2600-24-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2600-21-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2600-22-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2600-40-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2892-42-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2892-46-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2892-45-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads