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Analysis
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max time kernel
187s -
max time network
192s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
04/12/2022, 01:59
Static task
static1
Behavioral task
behavioral1
Sample
b0f76e340b6503aef5b1878bd20d104b0c246af7eab9e644937cceb7e3e93b48.dll
Resource
win7-20221111-en
General
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Target
b0f76e340b6503aef5b1878bd20d104b0c246af7eab9e644937cceb7e3e93b48.dll
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Size
139KB
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MD5
b3dfd0a4e19d54be103773ec96de3bd0
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SHA1
9c9f2d31fa8f844a2b2fc7604f74b4f56fe99292
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SHA256
b0f76e340b6503aef5b1878bd20d104b0c246af7eab9e644937cceb7e3e93b48
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SHA512
1ce1ea21d9517e208579e2fd8e4c8fcee5c42af35f902855b74997d8d17cbc26f6272903d6dc4daafd9725413c677c0d0c1bc4da22d8793787e19294acb8bd25
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SSDEEP
3072:BFVpKlgNfbGQ+9NR6veyFyEwgTyJnc6QkDzbb1+0Mm2:PPKO4R8eydyJnfQk3sJm2
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 552 rundll32mgr.exe -
resource yara_rule behavioral2/memory/552-137-0x0000000000400000-0x000000000042A000-memory.dmp upx -
Loads dropped DLL 1 IoCs
pid Process 552 rundll32mgr.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 2052 552 WerFault.exe 84 -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1180 wrote to memory of 2908 1180 rundll32.exe 83 PID 1180 wrote to memory of 2908 1180 rundll32.exe 83 PID 1180 wrote to memory of 2908 1180 rundll32.exe 83 PID 2908 wrote to memory of 552 2908 rundll32.exe 84 PID 2908 wrote to memory of 552 2908 rundll32.exe 84 PID 2908 wrote to memory of 552 2908 rundll32.exe 84
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b0f76e340b6503aef5b1878bd20d104b0c246af7eab9e644937cceb7e3e93b48.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1180 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b0f76e340b6503aef5b1878bd20d104b0c246af7eab9e644937cceb7e3e93b48.dll,#12⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2908 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
PID:552 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 552 -s 5164⤵
- Program crash
PID:2052
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 552 -ip 5521⤵PID:3980
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
1.6MB
MD54f3387277ccbd6d1f21ac5c07fe4ca68
SHA1e16506f662dc92023bf82def1d621497c8ab5890
SHA256767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA5129da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219
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Filesize
106KB
MD5fe36fb1073e6f8fa14d7250501a29aaf
SHA16c7e01278362797dabcff3e666b68227cb9af10f
SHA256f34e5af97ccb3574f7d5343246138daf979bfd1f9c37590e9a41f6420ddb3bb6
SHA5128584c008c5780352f634c37b7f46543a26280b57577b675f6e72185bfc1d95f771d210d799d704eceaba509ebfd2796fb43829495d5b2a568c741ad2d44f882f
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Filesize
106KB
MD5fe36fb1073e6f8fa14d7250501a29aaf
SHA16c7e01278362797dabcff3e666b68227cb9af10f
SHA256f34e5af97ccb3574f7d5343246138daf979bfd1f9c37590e9a41f6420ddb3bb6
SHA5128584c008c5780352f634c37b7f46543a26280b57577b675f6e72185bfc1d95f771d210d799d704eceaba509ebfd2796fb43829495d5b2a568c741ad2d44f882f