Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
03-04-2024 15:57
Static task
static1
Behavioral task
behavioral1
Sample
PROFORMA INVOICE.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
PROFORMA INVOICE.exe
Resource
win10v2004-20240226-en
General
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Target
PROFORMA INVOICE.exe
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Size
1.6MB
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MD5
488f8d9de535475e4a901c033199ea0c
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SHA1
3bda45e062fdc55823d9ceb71d0575df1e6ffd9e
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SHA256
67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518
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SHA512
58c0bb1af9b495f4c20a518d158f35a96d3f51dbb026b7fc40572a212dd7f05221f11efa995ef10199d32f970a308ea25407b77d307eeed06bd91b897ddbc4a4
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SSDEEP
49152:ay6imwGhfj4GBT2z95Zw/L+gwnzBnwyuPTh:azimw4f8iSuD+g
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
Processes:
resource yara_rule behavioral2/memory/1396-2-0x0000000002950000-0x0000000003950000-memory.dmp modiloader_stage2 -
Executes dropped EXE 1 IoCs
Processes:
7439909.exepid process 5108 7439909.exe -
Loads dropped DLL 1 IoCs
Processes:
7439909.exepid process 5108 7439909.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
PROFORMA INVOICE.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Uajcyryw = "C:\\Users\\Public\\Uajcyryw.url" PROFORMA INVOICE.exe -
Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
Processes:
description flow ioc HTTP User-Agent header 24 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
powershell.exepid process 1236 powershell.exe 1236 powershell.exe 1236 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 1236 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
PROFORMA INVOICE.exepid process 1396 PROFORMA INVOICE.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
PROFORMA INVOICE.execmd.exe7439909.execmd.execmd.exedescription pid process target process PID 1396 wrote to memory of 452 1396 PROFORMA INVOICE.exe cmd.exe PID 1396 wrote to memory of 452 1396 PROFORMA INVOICE.exe cmd.exe PID 1396 wrote to memory of 452 1396 PROFORMA INVOICE.exe cmd.exe PID 1396 wrote to memory of 5104 1396 PROFORMA INVOICE.exe cmd.exe PID 1396 wrote to memory of 5104 1396 PROFORMA INVOICE.exe cmd.exe PID 1396 wrote to memory of 5104 1396 PROFORMA INVOICE.exe cmd.exe PID 1396 wrote to memory of 1432 1396 PROFORMA INVOICE.exe cmd.exe PID 1396 wrote to memory of 1432 1396 PROFORMA INVOICE.exe cmd.exe PID 1396 wrote to memory of 1432 1396 PROFORMA INVOICE.exe cmd.exe PID 1432 wrote to memory of 5108 1432 cmd.exe 7439909.exe PID 1432 wrote to memory of 5108 1432 cmd.exe 7439909.exe PID 5108 wrote to memory of 4112 5108 7439909.exe cmd.exe PID 5108 wrote to memory of 4112 5108 7439909.exe cmd.exe PID 4112 wrote to memory of 3344 4112 cmd.exe cmd.exe PID 4112 wrote to memory of 3344 4112 cmd.exe cmd.exe PID 3344 wrote to memory of 1236 3344 cmd.exe powershell.exe PID 3344 wrote to memory of 1236 3344 cmd.exe powershell.exe PID 1396 wrote to memory of 4748 1396 PROFORMA INVOICE.exe extrac32.exe PID 1396 wrote to memory of 4748 1396 PROFORMA INVOICE.exe extrac32.exe PID 1396 wrote to memory of 4748 1396 PROFORMA INVOICE.exe extrac32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.exe"C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.execmd /c mkdir "\\?\C:\Windows "2⤵
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C:\Windows\SysWOW64\cmd.execmd /c mkdir "\\?\C:\Windows \System32"2⤵
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C:\Windows\SysWOW64\cmd.execmd /c "C:\Windows \System32\7439909.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows \System32\7439909.exe"C:\Windows \System32\7439909.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.execmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"5⤵
- Suspicious use of WriteProcessMemory
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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
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C:\Windows\SysWOW64\extrac32.exeC:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.exe C:\\Users\\Public\\Libraries\\Uajcyryw.PIF2⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1712 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\ProgramData\remcos\logs.datFilesize
144B
MD5af3b43bde147aa4a614974b1803084bb
SHA109c240f906a96d4fa6bbcaa78d40e529e430828c
SHA256409f7b70c7bbfbcc875c5f71b3ade9bdfcebd41f989128fd0ab3c922ba09037e
SHA512b11fd072b05ff55ca1cf5e0b7435b03b250cee3858857569dfa801200e17618f9c4522cce439e8d78d5703c7e678b8886c32c4063ac0d4ed253df8a3ad49cc12
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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bfbota4e.vyk.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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C:\Windows \System32\7439909.exeFilesize
128KB
MD5231ce1e1d7d98b44371ffff407d68b59
SHA125510d0f6353dbf0c9f72fc880de7585e34b28ff
SHA25630951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
SHA512520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612
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C:\Windows \System32\netutils.dllFilesize
112KB
MD58541304aadba4ae8620bb2699f6e0437
SHA1e0b28a6ecd32d3789433217364c1006de9892df8
SHA25650573c81e5773c13a5411e8446d7fb17956865675782239818f7affd40a2fecb
SHA512c18b1233c138229705242e1cdc00970e45e414d8da9c643b1196ec9de261ae18076e22bed6fcc48c07d1f0e851469db9147f083f3c3c76a26b75994419392455
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C:\windows \system32\KDECO.batFilesize
11KB
MD5c545650595b479c81ad6b9d8882aae39
SHA17a98aa2e6eee23b3c1bba876955d525bc618b3f0
SHA256a3a80983cb33159f0455fa0135789402558baa1460db94d0071318512b8cb5f9
SHA51285ac596a7da9072a28c4178e4fdedc98f1b49c8e3fe5612cfe464833297b13f65d2dc59b52d7fc9970cff8f98d954111229aec0ed9dded454e03b0cf4ebb6ff3
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memory/1236-28-0x00007FFE92DE0000-0x00007FFE938A1000-memory.dmpFilesize
10.8MB
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memory/1236-33-0x00007FFE92DE0000-0x00007FFE938A1000-memory.dmpFilesize
10.8MB
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memory/1236-30-0x0000021876060000-0x0000021876070000-memory.dmpFilesize
64KB
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memory/1236-29-0x0000021876060000-0x0000021876070000-memory.dmpFilesize
64KB
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memory/1236-18-0x0000021876920000-0x0000021876942000-memory.dmpFilesize
136KB
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memory/1396-39-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-45-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-4-0x0000000000400000-0x00000000005AF000-memory.dmpFilesize
1.7MB
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memory/1396-2-0x0000000002950000-0x0000000003950000-memory.dmpFilesize
16.0MB
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memory/1396-36-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-38-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-0-0x0000000000870000-0x0000000000871000-memory.dmpFilesize
4KB
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memory/1396-40-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-41-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-42-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-44-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-86-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-48-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-51-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-52-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-1-0x0000000002950000-0x0000000003950000-memory.dmpFilesize
16.0MB
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memory/1396-63-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-64-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-73-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-74-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/1396-85-0x00000000153D0000-0x00000000163D0000-memory.dmpFilesize
16.0MB
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memory/5108-15-0x00000000613C0000-0x00000000613E3000-memory.dmpFilesize
140KB