Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
07-05-2024 13:45
Behavioral task
behavioral1
Sample
a99ac28401808fa033018d6986b63b90_NEAS.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
a99ac28401808fa033018d6986b63b90_NEAS.exe
Resource
win10v2004-20240426-en
General
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Target
a99ac28401808fa033018d6986b63b90_NEAS.exe
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Size
90KB
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MD5
a99ac28401808fa033018d6986b63b90
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SHA1
9197a027c083dc643911d88c08ed0060675cc1b8
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SHA256
ba59878f82c80a6d90f304303a59389159f5c95e98920ef2f9d43b8585b3a7e7
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SHA512
46887ce43b29871ef59d97b999816631096b75bbd550c75b3aca091924a3ea4710600708420edc296a0862f7f74c08e5b682a10f72ca87efd91c4f606f0813d4
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SSDEEP
1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y
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 Second Stage 4 IoCs
Processes:
resource yara_rule behavioral2/memory/5428-51-0x0000000000400000-0x0000000000414000-memory.dmp modiloader_stage2 behavioral2/memory/5428-52-0x0000000000400000-0x0000000000414000-memory.dmp modiloader_stage2 behavioral2/memory/5428-53-0x0000000000400000-0x0000000000414000-memory.dmp modiloader_stage2 behavioral2/memory/5428-57-0x0000000000400000-0x0000000000414000-memory.dmp modiloader_stage2 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
a99ac28401808fa033018d6986b63b90_NEAS.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation a99ac28401808fa033018d6986b63b90_NEAS.exe -
Executes dropped EXE 3 IoCs
Processes:
csrsll.execsrsll.execsrsll.exepid process 2300 csrsll.exe 3680 csrsll.exe 5428 csrsll.exe -
Processes:
resource yara_rule behavioral2/memory/1160-0-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/640-3-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral2/memory/1160-4-0x00000000021C0000-0x00000000021C2000-memory.dmp upx behavioral2/memory/640-9-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral2/memory/1160-10-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/640-11-0x0000000000400000-0x000000000040B000-memory.dmp upx C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe upx behavioral2/memory/2300-35-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/2300-43-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/5428-41-0x0000000000400000-0x0000000000414000-memory.dmp upx behavioral2/memory/5428-51-0x0000000000400000-0x0000000000414000-memory.dmp upx behavioral2/memory/5428-52-0x0000000000400000-0x0000000000414000-memory.dmp upx behavioral2/memory/5428-53-0x0000000000400000-0x0000000000414000-memory.dmp upx behavioral2/memory/640-55-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral2/memory/5428-49-0x0000000000400000-0x0000000000414000-memory.dmp upx behavioral2/memory/3680-56-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral2/memory/5428-57-0x0000000000400000-0x0000000000414000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
reg.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe" reg.exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
a99ac28401808fa033018d6986b63b90_NEAS.execsrsll.exedescription pid process target process PID 1160 set thread context of 640 1160 a99ac28401808fa033018d6986b63b90_NEAS.exe a99ac28401808fa033018d6986b63b90_NEAS.exe PID 2300 set thread context of 3680 2300 csrsll.exe csrsll.exe PID 2300 set thread context of 5428 2300 csrsll.exe csrsll.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
csrsll.exedescription pid process Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe Token: SeDebugPrivilege 3680 csrsll.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
a99ac28401808fa033018d6986b63b90_NEAS.exea99ac28401808fa033018d6986b63b90_NEAS.execsrsll.execsrsll.exepid process 1160 a99ac28401808fa033018d6986b63b90_NEAS.exe 640 a99ac28401808fa033018d6986b63b90_NEAS.exe 2300 csrsll.exe 3680 csrsll.exe -
Suspicious use of WriteProcessMemory 33 IoCs
Processes:
a99ac28401808fa033018d6986b63b90_NEAS.exea99ac28401808fa033018d6986b63b90_NEAS.execmd.execsrsll.exedescription pid process target process PID 1160 wrote to memory of 640 1160 a99ac28401808fa033018d6986b63b90_NEAS.exe a99ac28401808fa033018d6986b63b90_NEAS.exe PID 1160 wrote to memory of 640 1160 a99ac28401808fa033018d6986b63b90_NEAS.exe a99ac28401808fa033018d6986b63b90_NEAS.exe PID 1160 wrote to memory of 640 1160 a99ac28401808fa033018d6986b63b90_NEAS.exe a99ac28401808fa033018d6986b63b90_NEAS.exe PID 1160 wrote to memory of 640 1160 a99ac28401808fa033018d6986b63b90_NEAS.exe a99ac28401808fa033018d6986b63b90_NEAS.exe PID 1160 wrote to memory of 640 1160 a99ac28401808fa033018d6986b63b90_NEAS.exe a99ac28401808fa033018d6986b63b90_NEAS.exe PID 1160 wrote to memory of 640 1160 a99ac28401808fa033018d6986b63b90_NEAS.exe a99ac28401808fa033018d6986b63b90_NEAS.exe PID 1160 wrote to memory of 640 1160 a99ac28401808fa033018d6986b63b90_NEAS.exe a99ac28401808fa033018d6986b63b90_NEAS.exe PID 1160 wrote to memory of 640 1160 a99ac28401808fa033018d6986b63b90_NEAS.exe a99ac28401808fa033018d6986b63b90_NEAS.exe PID 640 wrote to memory of 4308 640 a99ac28401808fa033018d6986b63b90_NEAS.exe cmd.exe PID 640 wrote to memory of 4308 640 a99ac28401808fa033018d6986b63b90_NEAS.exe cmd.exe PID 640 wrote to memory of 4308 640 a99ac28401808fa033018d6986b63b90_NEAS.exe cmd.exe PID 4308 wrote to memory of 5644 4308 cmd.exe reg.exe PID 4308 wrote to memory of 5644 4308 cmd.exe reg.exe PID 4308 wrote to memory of 5644 4308 cmd.exe reg.exe PID 640 wrote to memory of 2300 640 a99ac28401808fa033018d6986b63b90_NEAS.exe csrsll.exe PID 640 wrote to memory of 2300 640 a99ac28401808fa033018d6986b63b90_NEAS.exe csrsll.exe PID 640 wrote to memory of 2300 640 a99ac28401808fa033018d6986b63b90_NEAS.exe csrsll.exe PID 2300 wrote to memory of 3680 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 3680 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 3680 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 3680 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 3680 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 3680 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 3680 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 3680 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 5428 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 5428 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 5428 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 5428 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 5428 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 5428 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 5428 2300 csrsll.exe csrsll.exe PID 2300 wrote to memory of 5428 2300 csrsll.exe csrsll.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a99ac28401808fa033018d6986b63b90_NEAS.exe"C:\Users\Admin\AppData\Local\Temp\a99ac28401808fa033018d6986b63b90_NEAS.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1160 -
C:\Users\Admin\AppData\Local\Temp\a99ac28401808fa033018d6986b63b90_NEAS.exe"C:\Users\Admin\AppData\Local\Temp\a99ac28401808fa033018d6986b63b90_NEAS.exe"2⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:640 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\OCDXU.bat" "3⤵
- Suspicious use of WriteProcessMemory
PID:4308 -
C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f4⤵
- Adds Run key to start application
PID:5644 -
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2300 -
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3680 -
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"4⤵
- Executes dropped EXE
PID:5428
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
145B
MD54eb61ec7816c34ec8c125acadc57ec1b
SHA1b0015cc865c0bb1a027be663027d3829401a31cc
SHA25608375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff
SHA512f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1
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Filesize
90KB
MD514670e9e0ec2e2ea4f131133bd45f156
SHA15fc1426c68df2be2f10b8df97f10258390428f19
SHA256e5ab6080e99017417934b12d123456843785ac2495daf543d1e97c04dbadcac1
SHA512bb74ec020bf10708942bcf7433673ef1ee9367f0d38906188c48a90767316ac92d982fa03c633c17146fccc49ca9876f3fa84a2f95fa7860eccfc0eed1656d9e