Analysis
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max time kernel
136s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
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submitted
24-08-2023 07:25
General
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Target
ReviewPrint.exe
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Size
330KB
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MD5
5be0349cfd478100b67fa4a867cfc516
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SHA1
ad95587989a7bdeb80380a9e8b179f7e11db53a8
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SHA256
4332bb07339c3096997fbb89b695afeb3b1e21632c8ecb4e144ec883d61ab066
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SHA512
4a942340eaa75f5a98caf8073c2acc1c8c9310113d4d9e5b76cd4d91d87baa913c250caab657bc374f20233fc79d75dc6e29c74b4e301634934593dc86eb8534
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SSDEEP
1536:OphmidUnwrFnOATLZ+ZlDD44444444444444444444444444444444444444444t:sJUGpU1T83KvqAwsiYQmwf
Malware Config
Extracted
buer
https://161.35.192.121/
Signatures
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Buer
Buer is a new modular loader first seen in August 2019.
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
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Buer Loader 4 IoCs
Detects Buer loader in memory or disk.
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Executes dropped EXE 1 IoCs
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Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\ReviewPrint.exe"C:\Users\Admin\AppData\Local\Temp\ReviewPrint.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\ProgramData\f4a9f0553dd72a03a938\gennt.exeC:\ProgramData\f4a9f0553dd72a03a938\gennt.exe "C:\Users\Admin\AppData\Local\Temp\ReviewPrint.exe" ensgJJ2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Enumerates connected drives
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\f4a9f0553dd72a03a938}"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
330KB
MD55be0349cfd478100b67fa4a867cfc516
SHA1ad95587989a7bdeb80380a9e8b179f7e11db53a8
SHA2564332bb07339c3096997fbb89b695afeb3b1e21632c8ecb4e144ec883d61ab066
SHA5124a942340eaa75f5a98caf8073c2acc1c8c9310113d4d9e5b76cd4d91d87baa913c250caab657bc374f20233fc79d75dc6e29c74b4e301634934593dc86eb8534
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Filesize
330KB
MD55be0349cfd478100b67fa4a867cfc516
SHA1ad95587989a7bdeb80380a9e8b179f7e11db53a8
SHA2564332bb07339c3096997fbb89b695afeb3b1e21632c8ecb4e144ec883d61ab066
SHA5124a942340eaa75f5a98caf8073c2acc1c8c9310113d4d9e5b76cd4d91d87baa913c250caab657bc374f20233fc79d75dc6e29c74b4e301634934593dc86eb8534
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
6.5MB
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Filesize
104KB
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Filesize
120KB
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Filesize
7.7MB
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Filesize
32KB
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Filesize
104KB
-
Filesize
56KB
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Filesize
216KB
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Filesize
7.7MB
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Filesize
64KB
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Filesize
6.2MB
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Filesize
136KB
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Filesize
408KB
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Filesize
408KB
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Filesize
7.7MB
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Filesize
600KB
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Filesize
40KB
-
Filesize
64KB
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Filesize
200KB
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Filesize
304KB
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Filesize
120KB
-
Filesize
64KB
-
Filesize
348KB
-
Filesize
348KB
-
Filesize
60KB
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Filesize
60KB
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Filesize
348KB
-
Filesize
52KB
-
Filesize
348KB
-
Filesize
48KB
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Filesize
4KB