Analysis
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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
Static task
static1
Behavioral task
behavioral1
Sample
Document.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Document.exe
Resource
win10v2004-20240226-en
General
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Target
Document.exe
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Size
1.2MB
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MD5
e652224389478e9294591e8bf638f9a6
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SHA1
33126d714dbcba65b9006472be89092cb54fa826
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SHA256
88c21447120abe15f0da3d0ce1dfa63e1c5e4ef52415ed177728cd229507eb83
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SHA512
e7e835cfa4e8aba53a1271ef849b9f3c22fe2339089f4624e42cafae014853d41d690437af21aed42477cbd432aa8229d05a20468b68e5286661e6433802756c
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SSDEEP
24576:LI7PgJ/Of9JIIB1jf2kH2E4NGGtPlq09Vb2aBPqK5WDpiCEKfF2V2CKKKKKKKKK5:LdJPK2kH2h3t0qVb2aBPqK5WDpifAlC4
Malware Config
Extracted
remcos
RemoteHost
127.0.0.1:47212
officerem.duckdns.org:47212
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
false
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
Rmc-I8N3XG
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
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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
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
Processes
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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.execmd /c mkdir "\\?\C:\Windows "2⤵PID:440
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C:\Windows\SysWOW64\cmd.execmd /c mkdir "\\?\C:\Windows \System32"2⤵PID:3944
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C:\Windows\SysWOW64\cmd.execmd /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.exeC:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""4⤵
- Suspicious use of WriteProcessMemory
PID:3952 -
C:\Windows\system32\cmd.execmd /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.exepowershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"6⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:912
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C:\Windows\SysWOW64\extrac32.exeC:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\Document.exe C:\\Users\\Public\\Libraries\\Ejuqejhd.PIF2⤵PID:3368
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C:\Windows\SysWOW64\colorcpl.exeC:\Windows\System32\colorcpl.exe2⤵
- Suspicious use of SetWindowsHookEx
PID:5072
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
144B
MD5add3e1275be6a1c9967f429ce66f7853
SHA1a709f50bc9b3ecde6fd11c7cf21402bc17f39093
SHA256f8d238d0144640879d27c96e5c9d312ec082b21e08ae49de47d588320ccf8abe
SHA51263d25be297cc62bfc6c69adca6bc1b50da199fccac761f991c0eac0b5aa04d2be12179e0a242fa2fac07109b33e13e340acd907ae5517dc20c769da55d0e0f3b
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
128KB
MD5231ce1e1d7d98b44371ffff407d68b59
SHA125510d0f6353dbf0c9f72fc880de7585e34b28ff
SHA25630951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
SHA512520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612
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Filesize
112KB
MD5fa7aa88417d0c48807144a1a48fe3fbc
SHA16f5ec990b12d4a6075050a94e0d68d03781fa46d
SHA2562019dcd18ba7d5554a4a9da882740aa883941670af3de9396960081a0f8aa098
SHA51299b2eb6f8e7d00a3803cba229149e5e0cb67a3deb607782c55fbacd25d9c074cce83759de15490eff939d5ad98f26cdbd44395cc79ffe22753e16c3d9e3b5fff
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Filesize
11KB
MD5c545650595b479c81ad6b9d8882aae39
SHA17a98aa2e6eee23b3c1bba876955d525bc618b3f0
SHA256a3a80983cb33159f0455fa0135789402558baa1460db94d0071318512b8cb5f9
SHA51285ac596a7da9072a28c4178e4fdedc98f1b49c8e3fe5612cfe464833297b13f65d2dc59b52d7fc9970cff8f98d954111229aec0ed9dded454e03b0cf4ebb6ff3