modiloader | 88c21447120abe15f0da3d0ce1dfa63e1c5e4ef52415ed177728cd229507eb83

Analysis

max time kernel
151s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 12:31

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General

Target
Document.exe
Size 1.2MB
Sample240325-pp3ygaae4y
SHA256 88c21447120abe15f0da3d0ce1dfa63e1c5e4ef52415ed177728cd229507eb83
MD5 e652224389478e9294591e8bf638f9a6
SHA1 33126d714dbcba65b9006472be89092cb54fa826
SHA512 e7e835cfa4e8aba53a1271ef849b9f3c22fe2339089f4624e42cafae014853d41d690437af21aed42477cbd432aa8229d05a20468b68e5286661e6433802756c
SSDEEP 24576:LI7PgJ/Of9JIIB1jf2kH2E4NGGtPlq09Vb2aBPqK5WDpiCEKfF2V2CKKKKKKKKK5:LdJPK2kH2h3t0qVb2aBPqK5WDpifAlC4
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

modiloader remcos remotehost persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:47212
officerem.duckdns.org:47212

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-I8N3XG
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/4992-2-0x0000000002A70000-0x0000000003A70000-memory.dmp	modiloader_stage2

Executes dropped EXE 1 IoCs

pid	Process
1004	370964.exe

Loads dropped DLL 1 IoCs

pid	Process
1004	370964.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-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ejuqejhd = "C:\\Users\\Public\\Ejuqejhd.url"	Document.exe

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	25	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
912	powershell.exe
912	powershell.exe
912	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	912	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5072	colorcpl.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4992 wrote to memory of 440	4992	Document.exe	95
PID 4992 wrote to memory of 440	4992	Document.exe	95
PID 4992 wrote to memory of 440	4992	Document.exe	95
PID 4992 wrote to memory of 3944	4992	Document.exe	96
PID 4992 wrote to memory of 3944	4992	Document.exe	96
PID 4992 wrote to memory of 3944	4992	Document.exe	96
PID 4992 wrote to memory of 4784	4992	Document.exe	101
PID 4992 wrote to memory of 4784	4992	Document.exe	101
PID 4992 wrote to memory of 4784	4992	Document.exe	101
PID 4784 wrote to memory of 1004	4784	cmd.exe	103
PID 4784 wrote to memory of 1004	4784	cmd.exe	103
PID 1004 wrote to memory of 3952	1004	370964.exe	104
PID 1004 wrote to memory of 3952	1004	370964.exe	104
PID 3952 wrote to memory of 1720	3952	cmd.exe	106
PID 3952 wrote to memory of 1720	3952	cmd.exe	106
PID 1720 wrote to memory of 912	1720	cmd.exe	108
PID 1720 wrote to memory of 912	1720	cmd.exe	108
PID 4992 wrote to memory of 3368	4992	Document.exe	109
PID 4992 wrote to memory of 3368	4992	Document.exe	109
PID 4992 wrote to memory of 3368	4992	Document.exe	109
PID 4992 wrote to memory of 5072	4992	Document.exe	110
PID 4992 wrote to memory of 5072	4992	Document.exe	110
PID 4992 wrote to memory of 5072	4992	Document.exe	110
PID 4992 wrote to memory of 5072	4992	Document.exe	110

C:\Users\Admin\AppData\Local\Temp\Document.exe
"C:\Users\Admin\AppData\Local\Temp\Document.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4992
- C:\Windows\SysWOW64\cmd.exe
  cmd /c mkdir "\\?\C:\Windows "
  2⤵
  PID:440
- C:\Windows\SysWOW64\cmd.exe
  cmd /c mkdir "\\?\C:\Windows \System32"
  2⤵
  PID:3944
- C:\Windows\SysWOW64\cmd.exe
  cmd /c "C:\Windows \System32\370964.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4784
- - C:\Windows \System32\370964.exe
    "C:\Windows \System32\370964.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:1004
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3952
    - - C:\Windows\system32\cmd.exe
        
        cmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1720
      - 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:912
- C:\Windows\SysWOW64\extrac32.exe
  C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\Document.exe C:\\Users\\Public\\Libraries\\Ejuqejhd.PIF
  2⤵
  PID:3368
- C:\Windows\SysWOW64\colorcpl.exe
  C:\Windows\System32\colorcpl.exe
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:5072

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 144B
SHA256 f8d238d0144640879d27c96e5c9d312ec082b21e08ae49de47d588320ccf8abe
MD5 add3e1275be6a1c9967f429ce66f7853
SHA1 a709f50bc9b3ecde6fd11c7cf21402bc17f39093
SHA512 63d25be297cc62bfc6c69adca6bc1b50da199fccac761f991c0eac0b5aa04d2be12179e0a242fa2fac07109b33e13e340acd907ae5517dc20c769da55d0e0f3b
MD5 SHA1 SHA512

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__PSScriptPolicyTest_hlpl3kvu.rw1.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hlpl3kvu.rw1.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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370964.exe

Path C:\Windows \System32\370964.exe
Size 128KB
SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
MD5 231ce1e1d7d98b44371ffff407d68b59
SHA1 25510d0f6353dbf0c9f72fc880de7585e34b28ff
SHA512 520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612
SSDEEP 3072:zar2xXibKcf5K67+k02XbFbosspwUUgcR:Nibl7+k02XZb9UA
MD5 SHA1 SHA512 SSDEEP

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netutils.dll

Path C:\Windows \System32\netutils.dll
Size 112KB
SHA256 2019dcd18ba7d5554a4a9da882740aa883941670af3de9396960081a0f8aa098
MD5 fa7aa88417d0c48807144a1a48fe3fbc
SHA1 6f5ec990b12d4a6075050a94e0d68d03781fa46d
SHA512 99b2eb6f8e7d00a3803cba229149e5e0cb67a3deb607782c55fbacd25d9c074cce83759de15490eff939d5ad98f26cdbd44395cc79ffe22753e16c3d9e3b5fff
SSDEEP 1536:sLW5ID3z1yOjXtZqmsGyhvI5jduvd9a8yCl7MbiRVRpz5u:sLWi/LZq3hvUuvd9a8BRpz5u
MD5 SHA1 SHA512 SSDEEP

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KDECO.bat

Path C:\windows \system32\KDECO.bat
Size 11KB
SHA256 a3a80983cb33159f0455fa0135789402558baa1460db94d0071318512b8cb5f9
MD5 c545650595b479c81ad6b9d8882aae39
SHA1 7a98aa2e6eee23b3c1bba876955d525bc618b3f0
SHA512 85ac596a7da9072a28c4178e4fdedc98f1b49c8e3fe5612cfe464833297b13f65d2dc59b52d7fc9970cff8f98d954111229aec0ed9dded454e03b0cf4ebb6ff3
SSDEEP 192:UPNoaJSjPMK2jxkXDmZevmhmpd/mGq5LnRWF7NpL29QeQoGAhLNTbz4UgHCHDQSq:KNjsjUKwxCiZevmgpd/jcnRu7imoG8Le
MD5 SHA1 SHA512 SSDEEP

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memory/912-18-0x000002BC1C690000-0x000002BC1C6B2000-memory.dmp

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memory/912-29-0x000002BC1A510000-0x000002BC1A520000-memory.dmp

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memory/912-33-0x00007FF9B4A40000-0x00007FF9B5501000-memory.dmp

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memory/912-30-0x000002BC1A510000-0x000002BC1A520000-memory.dmp

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memory/912-28-0x00007FF9B4A40000-0x00007FF9B5501000-memory.dmp

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memory/1004-16-0x00000000613C0000-0x00000000613E3000-memory.dmp

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memory/4992-1-0x0000000002A70000-0x0000000003A70000-memory.dmp

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memory/4992-2-0x0000000002A70000-0x0000000003A70000-memory.dmp

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memory/4992-0-0x0000000002330000-0x0000000002331000-memory.dmp

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memory/4992-4-0x0000000000400000-0x000000000053C000-memory.dmp

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memory/5072-50-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-40-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-44-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-45-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-46-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-48-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-49-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-42-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-52-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-43-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-57-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-58-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-65-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-66-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-73-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-74-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-81-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/5072-82-0x00000000006E0000-0x00000000016E0000-memory.dmp

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