Analysis
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max time kernel
138s -
max time network
156s -
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
Review.exe
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Size
326KB
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MD5
8330ee5e6df29bdb94e65f2c93e3da24
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SHA1
8b5d4da807717806579cc9dc117f8a91f75154ec
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SHA256
91d1851a7dfd2133102df6f58b34823726796744e62f61e4181b977026b19d6b
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SHA512
1cdad334545c2eec3ab6b1a9ac1e12c4b358bf863eae96ababe6bdc6c6706ce0a20e16b6bb20d94247477c0c6ba93a94572adf5305dd5b7fca09dbcfa6830ed6
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SSDEEP
1536:QRhmabwrFnOATLZ+ZlDD4444444444444444444444444444444444444444444x:CupU1Wg8sZ/FXdVi3F6T6qo
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\Review.exe"C:\Users\Admin\AppData\Local\Temp\Review.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\ProgramData\5916d200cd93f10ab62e\gennt.exeC:\ProgramData\5916d200cd93f10ab62e\gennt.exe "C:\Users\Admin\AppData\Local\Temp\Review.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\5916d200cd93f10ab62e}"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
326KB
MD58330ee5e6df29bdb94e65f2c93e3da24
SHA18b5d4da807717806579cc9dc117f8a91f75154ec
SHA25691d1851a7dfd2133102df6f58b34823726796744e62f61e4181b977026b19d6b
SHA5121cdad334545c2eec3ab6b1a9ac1e12c4b358bf863eae96ababe6bdc6c6706ce0a20e16b6bb20d94247477c0c6ba93a94572adf5305dd5b7fca09dbcfa6830ed6
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Filesize
326KB
MD58330ee5e6df29bdb94e65f2c93e3da24
SHA18b5d4da807717806579cc9dc117f8a91f75154ec
SHA25691d1851a7dfd2133102df6f58b34823726796744e62f61e4181b977026b19d6b
SHA5121cdad334545c2eec3ab6b1a9ac1e12c4b358bf863eae96ababe6bdc6c6706ce0a20e16b6bb20d94247477c0c6ba93a94572adf5305dd5b7fca09dbcfa6830ed6
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
60KB
-
Filesize
4KB
-
Filesize
48KB
-
Filesize
348KB
-
Filesize
348KB
-
Filesize
52KB
-
Filesize
6.5MB
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Filesize
304KB
-
Filesize
64KB
-
Filesize
216KB
-
Filesize
64KB
-
Filesize
6.2MB
-
Filesize
136KB
-
Filesize
408KB
-
Filesize
408KB
-
Filesize
7.7MB
-
Filesize
120KB
-
Filesize
64KB
-
Filesize
200KB
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Filesize
7.7MB
-
Filesize
120KB
-
Filesize
64KB
-
Filesize
104KB
-
Filesize
40KB
-
Filesize
600KB
-
Filesize
7.7MB
-
Filesize
56KB
-
Filesize
104KB
-
Filesize
32KB
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Filesize
60KB
-
Filesize
348KB
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Filesize
348KB