Analysis
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max time kernel
104s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20250314-en -
resource tags
arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system -
submitted
01/04/2025, 11:02
Static task
static1
Behavioral task
behavioral1
Sample
remcos.exe
Resource
win10v2004-20250314-en
General
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Target
remcos.exe
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Size
1.6MB
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MD5
d8a9c29e11551ed7cd75a7647b60f390
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SHA1
969dbab818aea458ff5c4537c017ce04a5e568d0
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SHA256
512a5c196625c71b99037ea18a34b29e620ecd72e81073cc3143396bf43b5d61
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SHA512
0023ff145b5fc82792c689510b96a81598754d13d170a3948c5fc7fd485ac5a31dceb3e729674abc51cc8a6f71e986d1158ce3e69b154036debb5d39a7164261
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SSDEEP
24576:OkCIwKMTJndSh1pBOzgqDx/u09mxzy8DfrKwUaYJ4PGd77iSI2grsZnbdWy8stfG:OkCzgUHDYuhJ4Ox7iS3grsBbdiw
Malware Config
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 family
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ModiLoader Second Stage 61 IoCs
resource yara_rule behavioral1/memory/4956-2-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-6-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-8-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-25-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-56-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-65-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-64-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-63-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-62-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-60-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-59-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-58-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-57-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-55-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-54-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-53-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-52-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-50-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-49-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-48-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-47-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-46-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-45-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-44-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-43-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-42-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-41-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-39-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-37-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-36-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-35-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-34-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-33-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-32-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-31-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-30-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-28-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-61-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-26-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-24-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-51-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-23-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-21-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-18-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-40-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-17-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-38-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-29-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-27-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-10-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-22-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-20-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-9-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-19-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-16-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-15-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-14-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-13-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-7-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-12-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 behavioral1/memory/4956-11-0x0000000002A20000-0x0000000003A20000-memory.dmp modiloader_stage2 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation remcos.exe Key value queried \REGISTRY\USER\S-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation WScript.exe -
Executes dropped EXE 5 IoCs
pid Process 844 alpha.pif 3032 alpha.pif 1552 remcos.exe 4844 remcos.exe 3948 remcos.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-805952410-2104024357-1716932545-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\chrome\\remcos.exe\"" remcos.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\chrome\\remcos.exe\"" remcos.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 3 IoCs
pid pid_target Process procid_target 1876 3948 WerFault.exe 118 3328 1552 WerFault.exe 113 4600 4844 WerFault.exe 114 -
System Location Discovery: System Language Discovery 1 TTPs 12 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WScript.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language alpha.pif Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language alpha.pif -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 4496 PING.EXE -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-805952410-2104024357-1716932545-1000_Classes\Local Settings remcos.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 4496 PING.EXE -
Suspicious use of WriteProcessMemory 36 IoCs
description pid Process procid_target PID 4956 wrote to memory of 3200 4956 remcos.exe 95 PID 4956 wrote to memory of 3200 4956 remcos.exe 95 PID 4956 wrote to memory of 3200 4956 remcos.exe 95 PID 4956 wrote to memory of 4516 4956 remcos.exe 96 PID 4956 wrote to memory of 4516 4956 remcos.exe 96 PID 4956 wrote to memory of 4516 4956 remcos.exe 96 PID 3200 wrote to memory of 1768 3200 cmd.exe 99 PID 3200 wrote to memory of 1768 3200 cmd.exe 99 PID 3200 wrote to memory of 1768 3200 cmd.exe 99 PID 4516 wrote to memory of 4496 4516 cmd.exe 100 PID 4516 wrote to memory of 4496 4516 cmd.exe 100 PID 4516 wrote to memory of 4496 4516 cmd.exe 100 PID 3200 wrote to memory of 844 3200 cmd.exe 101 PID 3200 wrote to memory of 844 3200 cmd.exe 101 PID 3200 wrote to memory of 844 3200 cmd.exe 101 PID 3200 wrote to memory of 3032 3200 cmd.exe 102 PID 3200 wrote to memory of 3032 3200 cmd.exe 102 PID 3200 wrote to memory of 3032 3200 cmd.exe 102 PID 4956 wrote to memory of 2488 4956 remcos.exe 103 PID 4956 wrote to memory of 2488 4956 remcos.exe 103 PID 4956 wrote to memory of 2488 4956 remcos.exe 103 PID 4956 wrote to memory of 2416 4956 remcos.exe 112 PID 4956 wrote to memory of 2416 4956 remcos.exe 112 PID 4956 wrote to memory of 2416 4956 remcos.exe 112 PID 2692 wrote to memory of 1552 2692 cmd.exe 113 PID 2692 wrote to memory of 1552 2692 cmd.exe 113 PID 2692 wrote to memory of 1552 2692 cmd.exe 113 PID 928 wrote to memory of 4844 928 cmd.exe 114 PID 928 wrote to memory of 4844 928 cmd.exe 114 PID 928 wrote to memory of 4844 928 cmd.exe 114 PID 2416 wrote to memory of 3024 2416 WScript.exe 116 PID 2416 wrote to memory of 3024 2416 WScript.exe 116 PID 2416 wrote to memory of 3024 2416 WScript.exe 116 PID 3024 wrote to memory of 3948 3024 cmd.exe 118 PID 3024 wrote to memory of 3948 3024 cmd.exe 118 PID 3024 wrote to memory of 3948 3024 cmd.exe 118
Processes
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C:\Users\Admin\AppData\Local\Temp\remcos.exe"C:\Users\Admin\AppData\Local\Temp\remcos.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4956 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\\ProgramData\\5932.cmd2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3200 -
C:\Windows\SysWOW64\esentutl.exeC:\\Windows\\System32\\esentutl /y C:\\Windows\\System32\\cmd.exe /d C:\\Users\\Public\\alpha.pif /o3⤵PID:1768
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C:\Users\Public\alpha.pifC:\\Users\\Public\\alpha.pif /c mkdir "\\?\C:\Windows "3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:844
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C:\Users\Public\alpha.pifC:\\Users\\Public\\alpha.pif /c mkdir "\\?\C:\Windows \SysWOW64"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3032
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\\ProgramData\\10666.cmd2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4516 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 103⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:4496
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\\ProgramData\\597.cmd2⤵
- System Location Discovery: System Language Discovery
PID:2488
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2416 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c "C:\ProgramData\chrome\remcos.exe"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3024 -
C:\ProgramData\chrome\remcos.exeC:\ProgramData\chrome\remcos.exe4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3948 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3948 -s 11125⤵
- Program crash
PID:1876
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\ProgramData\chrome\remcos.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:928 -
C:\ProgramData\chrome\remcos.exeC:\ProgramData\chrome\remcos.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4844 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4844 -s 11523⤵
- Program crash
PID:4600
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\ProgramData\chrome\remcos.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2692 -
C:\ProgramData\chrome\remcos.exeC:\ProgramData\chrome\remcos.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1552 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1552 -s 11763⤵
- Program crash
PID:3328
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4844 -ip 48441⤵PID:3972
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1552 -ip 15521⤵PID:2060
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3948 -ip 39481⤵PID:4316
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2KB
MD59a020804eba1ffac2928d7c795144bbf
SHA161fdc4135afdc99e106912aeafeac9c8a967becc
SHA256a86c6c7a2bf9e12c45275a5e7ebebd5e6d2ba302fe0a12600b7c9fdf283d9e63
SHA51242f6d754f1bdbeb6e4cc7aeb57ff4c4d126944f950d260a0839911e576ad16002c16122f81c1d39fa529432dca0a48c9acfbb18804ca9044425c8e424a5518be
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Filesize
19KB
MD51df650cca01129127d30063634ab5c03
SHA1bc7172dec0b12b05f2247bd5e17751eb33474d4e
SHA256edd4094e7a82a6ff8be65d6b075e9513bd15a6b74f8032b5c10ce18f7191fa60
SHA5120bddf9ecaaedb0c30103a1fbfb644d6d4f7608bd596403307ed89b2390568c3a29e2cf55d10e2eadbfc407ede52eaf9a4f2321ba5f37e358a1039f73c7688fbd
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Filesize
1.6MB
MD5d8a9c29e11551ed7cd75a7647b60f390
SHA1969dbab818aea458ff5c4537c017ce04a5e568d0
SHA256512a5c196625c71b99037ea18a34b29e620ecd72e81073cc3143396bf43b5d61
SHA5120023ff145b5fc82792c689510b96a81598754d13d170a3948c5fc7fd485ac5a31dceb3e729674abc51cc8a6f71e986d1158ce3e69b154036debb5d39a7164261
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Filesize
386B
MD536c0472fa5b6e3249bf55ea66ec0cbbc
SHA1568644a942fe7837a173971fc95ab09e2af33b34
SHA2561c681529ceff5af8e35a75c3b4390dd51eafe48873e7c13bb1524aa304ac0781
SHA512bba4f04a01a89469d978e3a1a32090daf835f3abd27bb3d4127aaa2ad42017d8174a9f2c1f9593ad3097212f5a9e055d3c8b721fb136e797bb0c15eea18fee17
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Filesize
231KB
MD5d0fce3afa6aa1d58ce9fa336cc2b675b
SHA14048488de6ba4bfef9edf103755519f1f762668f
SHA2564d89fc34d5f0f9babd022271c585a9477bf41e834e46b991deaa0530fdb25e22
SHA51280e127ef81752cd50f9ea2d662dc4d3bf8db8d29680e75fa5fc406ca22cafa5c4d89ef2eac65b486413d3cdd57a2c12a1cb75f65d1e312a717d262265736d1c2