modiloader | 1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22

Analysis

max time kernel
148s
max time network
143s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
22/04/2024, 15:47

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General

Target
1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe
Size 1.4MB
Sample240422-s8a9cadb7t
SHA256 1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22
MD5 86c87988e4c163f7b19bd68555c9d019
SHA1 5279f39755dc24f3044299d6ecd64ac63ec73ca7
SHA512 255dc520135189363dfb7505e71dc4f98806d74714d8f82755379ab91bfb1ccdfa89605cc26820bd5d9b50bf1ddc83a44d2ac770b6a0f724d7ce19b604ddb9b8
SSDEEP 24576:/6iXI/6AsGqohuP2v8rT3rM9qTgtAxMXYu9jz+ghCnCP6Zwras/:i8bTrM9IoS0jz+gwnAj
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

modiloader remcos remotehost persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

myumysmeetr.ddns.net:2404
mysmeetr.ddns.net:2404
meetre1ms.freeddns.org:2404
bbhmeetre1ms.freeddns.org:2404

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
WINWIN-K4ZHB5
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

ModiLoader Second Stage 1 IoCs

resource	yara_rule
behavioral2/memory/796-2-0x0000000002D90000-0x0000000003D90000-memory.dmp	modiloader_stage2

Executes dropped EXE 2 IoCs

pid	Process
2192	easinvoker.exe
1140	alpha.exe

Loads dropped DLL 1 IoCs

pid	Process
2192	easinvoker.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-1-5-21-834482027-582050234-2368284635-1000\Software\Microsoft\Windows\CurrentVersion\Run\Sraomtte = "C:\\Users\\Public\\Sraomtte.url"	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	xcopy.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	xcopy.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	xcopy.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	3	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	7	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3836	powershell.exe
3836	powershell.exe
796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe
796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3836	powershell.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 796 wrote to memory of 748	796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe	81
PID 796 wrote to memory of 748	796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe	81
PID 796 wrote to memory of 748	796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe	81
PID 748 wrote to memory of 1480	748	cmd.exe	83
PID 748 wrote to memory of 1480	748	cmd.exe	83
PID 748 wrote to memory of 1480	748	cmd.exe	83
PID 748 wrote to memory of 4208	748	cmd.exe	84
PID 748 wrote to memory of 4208	748	cmd.exe	84
PID 748 wrote to memory of 4208	748	cmd.exe	84
PID 748 wrote to memory of 3416	748	cmd.exe	85
PID 748 wrote to memory of 3416	748	cmd.exe	85
PID 748 wrote to memory of 3416	748	cmd.exe	85
PID 748 wrote to memory of 4588	748	cmd.exe	86
PID 748 wrote to memory of 4588	748	cmd.exe	86
PID 748 wrote to memory of 4588	748	cmd.exe	86
PID 748 wrote to memory of 3748	748	cmd.exe	87
PID 748 wrote to memory of 3748	748	cmd.exe	87
PID 748 wrote to memory of 3748	748	cmd.exe	87
PID 748 wrote to memory of 408	748	cmd.exe	88
PID 748 wrote to memory of 408	748	cmd.exe	88
PID 748 wrote to memory of 408	748	cmd.exe	88
PID 748 wrote to memory of 2192	748	cmd.exe	89
PID 748 wrote to memory of 2192	748	cmd.exe	89
PID 2192 wrote to memory of 4540	2192	easinvoker.exe	90
PID 2192 wrote to memory of 4540	2192	easinvoker.exe	90
PID 4540 wrote to memory of 3052	4540	cmd.exe	92
PID 4540 wrote to memory of 3052	4540	cmd.exe	92
PID 4540 wrote to memory of 1140	4540	cmd.exe	93
PID 4540 wrote to memory of 1140	4540	cmd.exe	93
PID 1140 wrote to memory of 3836	1140	alpha.exe	94
PID 1140 wrote to memory of 3836	1140	alpha.exe	94
PID 796 wrote to memory of 3408	796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe	95
PID 796 wrote to memory of 3408	796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe	95
PID 796 wrote to memory of 3408	796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe	95
PID 796 wrote to memory of 5004	796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe	96
PID 796 wrote to memory of 5004	796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe	96
PID 796 wrote to memory of 5004	796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe	96
PID 796 wrote to memory of 5004	796	1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe	96

C:\Users\Admin\AppData\Local\Temp\1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe
"C:\Users\Admin\AppData\Local\Temp\1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:796
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\SraomtteO.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:748
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
    3⤵
    PID:1480
- - C:\Windows\SysWOW64\xcopy.exe
    xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
    3⤵
    - Enumerates system info in registry
    PID:4208
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
    3⤵
    PID:3416
- - C:\Windows\SysWOW64\xcopy.exe
    xcopy "Aaa.bat" "C:\Windows \System32\" /K /D /H /Y
    3⤵
    - Enumerates system info in registry
    PID:4588
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
    3⤵
    PID:3748
- - C:\Windows\SysWOW64\xcopy.exe
    xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
    3⤵
    - Enumerates system info in registry
    PID:408
- - C:\Windows \System32\easinvoker.exe
    "C:\Windows \System32\easinvoker.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2192
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\windows \system32\aaa.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4540
    - - C:\Windows\System32\extrac32.exe
        
        C:\\Windows\\System32\\extrac32.exe /C /Y C:\\Windows\\System32\\cmd.exe C:\\Users\\Public\\alpha.exe
        5⤵
        
        PID:3052
    - - C:\Users\Public\alpha.exe
        
        C:\\Users\\Public\\alpha /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
        5⤵
        Executes dropped EXE
        Suspicious use of WriteProcessMemory
        
        PID:1140
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3836
- C:\Windows\SysWOW64\extrac32.exe
  C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\1fecd8f9260d65863bd4ec9e8818b618ee01c741316dc20234bd715d0940eb22.exe C:\\Users\\Public\\Libraries\\Sraomtte.PIF
  2⤵
  PID:3408
- C:\Windows\SysWOW64\colorcpl.exe
  C:\Windows\System32\colorcpl.exe
  2⤵
  PID:5004

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

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 146B
SHA256 ee130b1b85b3e125819409021a039bac1fbd2ad207b55e545a41422b61a4f6ce
MD5 ad6eaff202efaabd1c2ffb5415bf917e
SHA1 00755b35752435d13617b54940cdaa3b01a6d0c2
SHA512 c4731555f7e95ebb26b6bb4aaaf15e40d6755c1bfb7fa8140f94cc1db75daf821b47972eddc7e9b1afd22ec5115ef35b270fd32962d3107fe08e586d3d1355cd
MD5 SHA1 SHA512

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__PSScriptPolicyTest_m4jof0fx.ciw.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m4jof0fx.ciw.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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SraomtteO.bat

Path C:\Users\Public\Libraries\SraomtteO.bat
Size 29KB
SHA256 abac4a967800f5da708572ec42441ec373cd52459a83a8a382d6b8579482789d
MD5 828ffbf60677999579dafe4bf3919c63
SHA1 a0d159a1b9a49e9eaccc53fe0c3266c0526a1bdc
SHA512 bf00909e24c5a6fb2346e8457a9adacd5f1b35988d90abbde9ff26896bbb59edafea60d9db4d10182a7b5e129bb69585d3e20bc5c63af3517b3a7ef1e45ffb7e
SSDEEP 192:IBOY7cKQ/CyntVZjpubO0bXWQtagxP2+3o5WIGbfJTAy:C
MD5 SHA1 SHA512 SSDEEP

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aaa.bat

Path C:\Users\Public\Libraries\aaa.bat
Size 3KB
SHA256 11c20fabf677cd77e8a354b520f6ffca09cac37ce15c9932550e749e49efe08a
MD5 71e46efe9932b83b397b44052513fb49
SHA1 741af3b8c31095a0cc2c39c41e62279684913205
SHA512 76da3b441c0eaaaabdd4d21b0a3d4aa7fd49d73a5f0dab2cfb39f2e114efe4f4dabe2d46b01b66d810d6e0efa97676599ece5c213c1a69a5f2f4897a9b4ac8da
MD5 SHA1 SHA512

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easinvoker.exe

Path C:\Users\Public\Libraries\easinvoker.exe
Size 128KB
SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
MD5 231ce1e1d7d98b44371ffff407d68b59
SHA1 25510d0f6353dbf0c9f72fc880de7585e34b28ff
SHA512 520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612
SSDEEP 3072:zar2xXibKcf5K67+k02XbFbosspwUUgcR:Nibl7+k02XZb9UA
MD5 SHA1 SHA512 SSDEEP

Submit Download

netutils.dll

Path C:\Users\Public\Libraries\netutils.dll
Size 114KB
SHA256 a692d4305b95e57e2cfc871d53a41a5bfc9e306cb1a86ca1159db4f469598714
MD5 566b326055c3ed8e2028aa1e2c1054d0
SHA1 c25fa6d6369c083526cafcf45b5f554635afe218
SHA512 da4b0b45d47757b69f9abc1817d3cb3c85deb08658e55f07b016fba053efe541a5791b9b2b380c25b440bbae6916c5a2245261553ca3c5025d9d55c943f9823c
SSDEEP 1536:AxdWID3z1y5XtsBms9bOPu5jDqWte6VNCl7MbiRvRRJHu:AxdB/usBLOP8qWte6VQRRJHu
MD5 SHA1 SHA512 SSDEEP

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alpha.exe

Path C:\Users\Public\alpha.exe
Size 324KB
SHA256 f6c9532e1f4b66be96f0f56bd7c3a3c1997ea8066b91bfcc984e41f072c347ba
MD5 c5db7b712f280c3ae4f731ad7d5ea171
SHA1 e8717ff0d40e01fd3b06de2aa5a401bed1c907cc
SHA512 bceaf7dc30f2c99b40b7025a5eb063f3131a1ef9349fdf356720eaef838bcf58ce3d5e3bad9459ddd2f872df430bdb66a766a5acff5d3bbc738eba8945cb0a89
SSDEEP 6144:wh6/6DOyYSltqYDQjHpUWIcz5ROTOhM111uq9iRUaaUga4m1:p/6yL4qfjHpUBKfAO61Tb494
MD5 SHA1 SHA512 SSDEEP

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memory/796-1-0x0000000002D90000-0x0000000003D90000-memory.dmp

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memory/796-2-0x0000000002D90000-0x0000000003D90000-memory.dmp

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memory/796-4-0x0000000000400000-0x0000000000573000-memory.dmp

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memory/796-0-0x0000000002510000-0x0000000002511000-memory.dmp

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memory/2192-24-0x00000000613C0000-0x00000000613E3000-memory.dmp

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memory/3836-40-0x00007FFD715E0000-0x00007FFD720A2000-memory.dmp

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memory/3836-41-0x00000108D4700000-0x00000108D4710000-memory.dmp

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memory/3836-42-0x00000108D4700000-0x00000108D4710000-memory.dmp

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memory/3836-45-0x00007FFD715E0000-0x00007FFD720A2000-memory.dmp

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memory/3836-39-0x00000108D4780000-0x00000108D47A2000-memory.dmp

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memory/5004-56-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-72-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-58-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-59-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-60-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-61-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-62-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-68-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-69-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-70-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-71-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-54-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-73-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-75-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-76-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-77-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-51-0x00000000041D0000-0x00000000051D0000-memory.dmp

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memory/5004-83-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-84-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-91-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-100-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5004-99-0x0000000000400000-0x0000000000482000-memory.dmp

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