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Analysis
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max time kernel
149s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
03/02/2024, 08:29
Behavioral task
behavioral1
Sample
8bdeac226552fb683eff2f43cd79ac15.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
8bdeac226552fb683eff2f43cd79ac15.exe
Resource
win10v2004-20231215-en
General
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Target
8bdeac226552fb683eff2f43cd79ac15.exe
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Size
270KB
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MD5
8bdeac226552fb683eff2f43cd79ac15
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SHA1
cb40b583d0feaa8355edcc4e7fe889d60d456492
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SHA256
44422c987d161f2c41450fc0bfad5eaee5668ff13e37a492c0d078ecd0a7aab0
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SHA512
033cb79abe0e8fc3025fafb1f4a098b7941c9ce07da9b2da3f5540bac2c8439b6098759d3200d349636af1f26e41db0086244be6496f79bace0dd2bc17d2dfce
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SSDEEP
6144:KG377xS2Vp2CeiorXhwTBOz53OD3pcCJJvH:Zr7xS2Vp6FwTt3bJJvH
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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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe -
ModiLoader Second Stage 17 IoCs
resource yara_rule behavioral2/files/0x0006000000023221-5.dat modiloader_stage2 behavioral2/files/0x0006000000023221-9.dat modiloader_stage2 behavioral2/memory/2964-8-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-25-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-28-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-31-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-34-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-37-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-40-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-43-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-46-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-49-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-52-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-55-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-58-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-61-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 behavioral2/memory/3384-64-0x0000000000400000-0x000000000044B000-memory.dmp modiloader_stage2 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation 8bdeac226552fb683eff2f43cd79ac15.exe -
Deletes itself 1 IoCs
pid Process 3384 mstwain32.exe -
Executes dropped EXE 1 IoCs
pid Process 3384 mstwain32.exe -
Loads dropped DLL 4 IoCs
pid Process 3384 mstwain32.exe 3384 mstwain32.exe 3384 mstwain32.exe 3384 mstwain32.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe" mstwain32.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 8bdeac226552fb683eff2f43cd79ac15.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA mstwain32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe -
Drops file in Windows directory 4 IoCs
description ioc Process File created C:\Windows\mstwain32.exe 8bdeac226552fb683eff2f43cd79ac15.exe File opened for modification C:\Windows\mstwain32.exe 8bdeac226552fb683eff2f43cd79ac15.exe File created C:\Windows\ntdtcstp.dll mstwain32.exe File created C:\Windows\cmsetac.dll mstwain32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2964 8bdeac226552fb683eff2f43cd79ac15.exe Token: SeDebugPrivilege 3384 mstwain32.exe Token: SeDebugPrivilege 3384 mstwain32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3384 mstwain32.exe 3384 mstwain32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2964 wrote to memory of 3384 2964 8bdeac226552fb683eff2f43cd79ac15.exe 88 PID 2964 wrote to memory of 3384 2964 8bdeac226552fb683eff2f43cd79ac15.exe 88 PID 2964 wrote to memory of 3384 2964 8bdeac226552fb683eff2f43cd79ac15.exe 88 -
System policy modification 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8bdeac226552fb683eff2f43cd79ac15.exe"C:\Users\Admin\AppData\Local\Temp\8bdeac226552fb683eff2f43cd79ac15.exe"1⤵
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2964 -
C:\Windows\mstwain32.exe"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\8bdeac226552fb683eff2f43cd79ac15.exe"2⤵
- UAC bypass
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- System policy modification
PID:3384
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
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Filesize
33KB
MD59181c7e1eda61f0a7a0fb5274af16c34
SHA1b94853848d9cd45d322830d443650918b52783b3
SHA2563f3c433c36af8bcb290a23e94cd276e17b269b6094679f740242f591e712ee70
SHA5128a20253e4990fe732cae66f0cc81350ac3a4b33f474bbb06b1d275e8bb6eeb2e07bfec79e00590e57cabf92b52cfa2e6caec7b45276a97c2da0c74522323a674
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Filesize
270KB
MD58bdeac226552fb683eff2f43cd79ac15
SHA1cb40b583d0feaa8355edcc4e7fe889d60d456492
SHA25644422c987d161f2c41450fc0bfad5eaee5668ff13e37a492c0d078ecd0a7aab0
SHA512033cb79abe0e8fc3025fafb1f4a098b7941c9ce07da9b2da3f5540bac2c8439b6098759d3200d349636af1f26e41db0086244be6496f79bace0dd2bc17d2dfce
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Filesize
14KB
MD51fddfec5c094d29628e3940157a7323e
SHA11f977108e21231b27e515ef8c6a65dc1f35e47f1
SHA25607eea6aa3c975d03bf55767cd74034dea91a0327f29018e23c2316b181be5946
SHA512105e67ed4090e480a262c58ccfc1dc3d975f7747067fa4f3fbbe6065ee95a8f3f705069c3d4d9e51d3ae4f351b2e65eaadd0609e8045a6201ee6b3f08068615d
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Filesize
7KB
MD567587e25a971a141628d7f07bd40ffa0
SHA176fcd014539a3bb247cc0b761225f68bd6055f6b
SHA256e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378
SHA5126e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350