Analysis
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max time kernel
117s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
03/10/2024, 19:17
Static task
static1
Behavioral task
behavioral1
Sample
3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll
Resource
win7-20240903-en
General
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Target
3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll
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Size
419KB
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MD5
171e15f3d37b54a44d4fde0e253a9fc0
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SHA1
03b02123a8d6816ed3ec55bb8f4aa4553918814d
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SHA256
3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6a
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SHA512
9c2fa167f6817cbd53836a383e3f34a7f6a810f48437eb9ac70470278eaf2818960bf2d94f3356ce3ee59f171fcc738de350bb2694cd52118b96989eeae3ea8f
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SSDEEP
3072:9oekxYHVyS9nXPZGULMgo9ae3LV1dKdLhtKeoVWh7VnSNFKsa0h6:jkCE0nXP4AvhM1sdLhtloVWNV6a0h6
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 2716 regsvr32mgr.exe -
Loads dropped DLL 4 IoCs
pid Process 2396 regsvr32.exe 2396 regsvr32.exe 2716 regsvr32mgr.exe 2716 regsvr32mgr.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\regsvr32mgr.exe regsvr32.exe -
resource yara_rule behavioral1/memory/2716-11-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral1/memory/2716-18-0x0000000000400000-0x000000000045C000-memory.dmp upx -
Program crash 1 IoCs
pid pid_target Process procid_target 2792 2716 WerFault.exe 32 -
System Location Discovery: System Language Discovery 1 TTPs 2 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 regsvr32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32mgr.exe -
Modifies registry class 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\ = "7-Zip Shell Extension" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll" regsvr32.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 2240 wrote to memory of 2396 2240 regsvr32.exe 31 PID 2240 wrote to memory of 2396 2240 regsvr32.exe 31 PID 2240 wrote to memory of 2396 2240 regsvr32.exe 31 PID 2240 wrote to memory of 2396 2240 regsvr32.exe 31 PID 2240 wrote to memory of 2396 2240 regsvr32.exe 31 PID 2240 wrote to memory of 2396 2240 regsvr32.exe 31 PID 2240 wrote to memory of 2396 2240 regsvr32.exe 31 PID 2396 wrote to memory of 2716 2396 regsvr32.exe 32 PID 2396 wrote to memory of 2716 2396 regsvr32.exe 32 PID 2396 wrote to memory of 2716 2396 regsvr32.exe 32 PID 2396 wrote to memory of 2716 2396 regsvr32.exe 32
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2240 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll2⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2396 -
C:\Windows\SysWOW64\regsvr32mgr.exeC:\Windows\SysWOW64\regsvr32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:2716 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 1804⤵
- Program crash
PID:2792
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.2MB
MD5d124f55b9393c976963407dff51ffa79
SHA12c7bbedd79791bfb866898c85b504186db610b5d
SHA256ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06
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Filesize
1.1MB
MD59b98d47916ead4f69ef51b56b0c2323c
SHA1290a80b4ded0efc0fd00816f373fcea81a521330
SHA25696e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b
SHA51268b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94
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Filesize
354KB
MD5a8245f71e4e4aff10e574300abd2bcc2
SHA17ea3ae53a0697e526c6bc877b103b390af042d7a
SHA2567bf945e4d87567106bfe8980b4fe1e6482578ab91fa9d82426c804ae5c3f2546
SHA5128c32f1f55c0475ce06ddbd3db80d529addb401089bd61491641d2e2c0c36020eabc5a947735388ae7a90514c543cb29450afa13b1e3f90387e432b62d4628978