Analysis
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max time kernel
1s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
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submitted
25-12-2023 20:23
General
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Target
3b1e7e5df7f530ad30e29bb081f1c6e1.exe
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Size
20.1MB
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MD5
3b1e7e5df7f530ad30e29bb081f1c6e1
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SHA1
c54b0c1e12658c7882de84bfe7de4794d4182b39
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SHA256
50feea35e7a324e67b951d06fc3f0f5b01199b47b3cfb5a693e33eec699f84f2
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SHA512
83cb343bad4a00a0c2fb189057cc7fe2c642a8351816509c2239ff4503ac39322130a0f1e718691403c022be3ead6bae0b00a50aa1fd778bad8ba2bdd1c2da6f
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SSDEEP
393216:5hgfUt5Jb7h8Ki8H/4B+/UI+CyW3V1na971fyfP1WH5ePswr/d1:5hXX7hhi8QRbBM1nm71fy3100soX
Malware Config
Extracted
44caliber
https://discord.com/api/webhooks/870328559921668146/kazDUWGIa2HOkULS2qQpDIz38by-5RiNdWFILJQZSPRi2F9j1-5L1rtRf7yO0-V87Q4N
Signatures
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44Caliber
An open source infostealer written in C#.
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Themida packer 3 IoCs
Detects Themida, an advanced Windows software protection system.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks whether UAC is enabled 1 TTPs 1 IoCs
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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
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Suspicious behavior: EnumeratesProcesses 3 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\3b1e7e5df7f530ad30e29bb081f1c6e1.exe"C:\Users\Admin\AppData\Local\Temp\3b1e7e5df7f530ad30e29bb081f1c6e1.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
225B
MD592fdcf4eeb49fb20b9a5229a984255ca
SHA18f69ae66c08386abf45c88a43a93a541e8355fae
SHA256b0a650601d33d3c07c4bcbcdc62c4df4a69cc01efadf96c1c6111be9147328ed
SHA51294d634acd21b686e38f87358d4fc3829fc4c2fbc3eedc63dd712fe381f0fd7dca5cd064887939a3e226067f8c6f19c7fcf6e36b2803011ecdf54bcf5bf76fa82
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Filesize
1.1MB
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Filesize
1.1MB
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Filesize
6.9MB
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Filesize
1.1MB
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Filesize
50.9MB
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Filesize
1.1MB
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Filesize
8KB
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Filesize
50.9MB
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Filesize
284KB
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Filesize
1.1MB
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Filesize
50.9MB
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Filesize
256KB
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Filesize
1.1MB
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Filesize
284KB
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Filesize
1.1MB
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Filesize
50.9MB
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Filesize
6.9MB