remcos | 4d99b02c495821e34923228d8e0f76d86ae167466b252f42c5c808fabe05b2de

General

Target
RICHIESTA_DI_PREVENTIVO_MAS_MARINE_SRL_281000631.js
Size 149KB
Sample260804-phay4sem5w
SHA256 4d99b02c495821e34923228d8e0f76d86ae167466b252f42c5c808fabe05b2de
MD5 831792161d5520a48ce254bd1829d797
SHA1 47e776933bb526ed0e518408a13c360ea1dd51cc
SHA512 2fce03c9d5ac3cafdc97f42acb113b2c8e4823b1c379eed2e95241f5895380f8d216f029375ec98d9debbf3fdb8082ea6c3b0ad38a34f24e891ee53a07382181
SSDEEP 3072:9FHpBNKVnPU1AOLaGpFDRQQmQE3urqr+wNMk0TyE6fzDTtgDziKQb4:9FrcVkGwFDSQdVrqr+MHyB0aDVQU
TLSH
T184E3BF135BE82EE49B2805DBC314726782F2C5376829B9CC7A92A5C3FB3D741B775620
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

remotehost execution remcos rat

Malware Config

Extracted

Family

remcos

Version

7.2.6 Pro

Botnet

RemoteHost

C2

marithingcluster.duckdns.org:8080
waterbelowheat.duckdns.org:8080

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-Z76VSQ
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Family: Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 1672 created 3300	1672	powershell.exe	56

Badlisted process makes network request 22 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
4	1672	powershell.exe
6	1672	powershell.exe
14	1672	powershell.exe
18	1672	powershell.exe
21	1672	powershell.exe
29	1672	powershell.exe
30	1672	powershell.exe
31	1672	powershell.exe
37	1672	powershell.exe
40	1672	powershell.exe
41	1672	powershell.exe
42	1672	powershell.exe
44	1672	powershell.exe
50	1672	powershell.exe
51	1672	powershell.exe
55	1672	powershell.exe
59	1672	powershell.exe
60	1672	powershell.exe
65	1672	powershell.exe
67	1672	powershell.exe
68	1672	powershell.exe
69	1672	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
69	1672	powershell.exe

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-1-5-21-540052884-2969440504-464782435-1000\Control Panel\International\Geo\Nation	wscript.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3132	cmd.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1672	powershell.exe
1672	powershell.exe
1672	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1672	powershell.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs

pid	Process
1672	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1672	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4156 wrote to memory of 3360	4156	wscript.exe	84
PID 3360 wrote to memory of 4832	3360	conhost.exe	85
PID 4832 wrote to memory of 3132	4832	conhost.exe	86
PID 3132 wrote to memory of 552	3132	cmd.exe	87
PID 3132 wrote to memory of 1672	3132	cmd.exe	88
PID 1672 wrote to memory of 3272	1672	powershell.exe	99

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3300
- C:\Windows\system32\wscript.exe
  wscript.exe C:\Users\Admin\AppData\Local\Temp\RICHIESTA_DI_PREVENTIVO_MAS_MARINE_SRL_281000631.js
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:4156
- - C:\Windows\System32\conhost.exe
    "C:\Windows\System32\conhost.exe" --headless conhost.exe --headless cmd.exe /c "echo $ExecutionContext.InvokeCommand.InvokeScript([Environment]::GetEnvironmentVariable('UD0xFRsruLel','Process'))| powershell.exe -w H -nOP -nOni -"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3360
  - - C:\Windows\System32\conhost.exe
      conhost.exe --headless cmd.exe /c "echo $ExecutionContext.InvokeCommand.InvokeScript([Environment]::GetEnvironmentVariable('UD0xFRsruLel','Process'))| powershell.exe -w H -nOP -nOni -"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4832
    - - C:\Windows\System32\cmd.exe
        
        cmd.exe /c "echo $ExecutionContext.InvokeCommand.InvokeScript([Environment]::GetEnvironmentVariable('UD0xFRsruLel','Process'))| powershell.exe -w H -nOP -nOni -"
        5⤵
        Executes a command shell one-liner
        Suspicious use of WriteProcessMemory
        
        PID:3132
      - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /S /D /c" echo $ExecutionContext.InvokeCommand.InvokeScript([Environment]::GetEnvironmentVariable('UD0xFRsruLel','Process'))"
        6⤵
        
        PID:552
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell.exe -w H -nOP -nOni -
        6⤵
        Suspicious use of NtCreateUserProcessOtherParentProcess
        Badlisted process makes network request
        Downloads MZ/PE file
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1672
- C:\Windows\System32\svchost.exe
  "C:\Windows\System32\svchost.exe"
  2⤵
  PID:3272

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

JavaScript

1

T1059.007

Windows Command Shell

1

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

__PSScriptPolicyTest_jmrakg5a.0vg.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jmrakg5a.0vg.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

memory/1672-2-0x00000247BAF20000-0x00000247BAF42000-memory.dmp

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memory/1672-8-0x00000247BAFD0000-0x00000247BB01A000-memory.dmp

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memory/1672-9-0x00000247A0C90000-0x00000247A0CA0000-memory.dmp

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memory/3272-10-0x0000000140000000-0x00000001400AB000-memory.dmp

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memory/3272-13-0x0000000140000000-0x00000001400AB000-memory.dmp

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memory/3272-14-0x0000000140000000-0x00000001400AB000-memory.dmp

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memory/3272-15-0x0000000140000000-0x00000001400AB000-memory.dmp

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memory/3272-16-0x0000000140000000-0x00000001400AB000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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