Analysis
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max time kernel
15s -
max time network
19s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
03/10/2024, 16:48
Static task
static1
Behavioral task
behavioral1
Sample
a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ffN.dll
Resource
win7-20240903-en
General
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Target
a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ffN.dll
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Size
685KB
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MD5
86a7a160e257e190399d6059cacca0a0
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SHA1
665fff8e0f5455e37d21da18ae12421da5ef3572
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SHA256
a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ff
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SHA512
0f9dc3decf33fbd78513e2313ddbb8af70e378be520a398b18e96510dbfb1549074d2a67be218c9482feda5eaa45723fb615083a92ef4ddfc1fe3477e39d12b2
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SSDEEP
12288:FiDTDIO3IfnPZjcEBfsKYEZuROtto4aIJayoPJviaKYNVuI:YKnPZjcEBfsKYFuayoSsuI
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 1652 rundll32mgr.exe -
Loads dropped DLL 4 IoCs
pid Process 2088 rundll32.exe 2088 rundll32.exe 1652 rundll32mgr.exe 1652 rundll32mgr.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
resource yara_rule behavioral1/memory/1652-13-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral1/memory/1652-20-0x0000000000400000-0x000000000045C000-memory.dmp upx -
Program crash 1 IoCs
pid pid_target Process procid_target 1376 1652 WerFault.exe 31 -
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 rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32mgr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1864 wrote to memory of 2088 1864 rundll32.exe 30 PID 1864 wrote to memory of 2088 1864 rundll32.exe 30 PID 1864 wrote to memory of 2088 1864 rundll32.exe 30 PID 1864 wrote to memory of 2088 1864 rundll32.exe 30 PID 1864 wrote to memory of 2088 1864 rundll32.exe 30 PID 1864 wrote to memory of 2088 1864 rundll32.exe 30 PID 1864 wrote to memory of 2088 1864 rundll32.exe 30 PID 2088 wrote to memory of 1652 2088 rundll32.exe 31 PID 2088 wrote to memory of 1652 2088 rundll32.exe 31 PID 2088 wrote to memory of 1652 2088 rundll32.exe 31 PID 2088 wrote to memory of 1652 2088 rundll32.exe 31
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ffN.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1864 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\a2be1d5be7fc1358a081527ff2654d0ab5c2425ed960020fbbcccb8025cec1ffN.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2088 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:1652 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1652 -s 1804⤵
- Program crash
PID:1376
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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