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Analysis
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max time kernel
142s -
max time network
140s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
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submitted
11/01/2023, 07:32
General
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Target
SecuriteInfo.com.Gen.Variant.Nemesis.16281.18907.11936.exe
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Size
622KB
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MD5
a1eb9b01ff7b80dac067728bc1476c55
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SHA1
40be959c6151c3a224189045084c0c729540390d
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SHA256
a72167e93f3c86c49dcfb62116416dd94a3781933252f1e0096beba7973e2c3b
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SHA512
bde60cd01dcfcba0053279725c9cae50b3941c3471bc41eddf8e287934f8f11e2218d9d5245b2cabae5a7ca58f5f66aaf4bb76c908e9f4d0fe4e03224d60ca33
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SSDEEP
12288:AcWJ+6nT8mlodoRNnKRpj25w3Ng1ADX9rMIbyyjRt:AXBn1lodo6jf3NgMBxOyj/
Malware Config
Extracted
marsstealer
Default
152.89.218.97/gate.php
Signatures
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Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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Mars Stealer
An infostealer written in C++ based on other infostealers.
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Checks QEMU agent file 2 TTPs 2 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
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Deletes itself 1 IoCs
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Loads dropped DLL 3 IoCs
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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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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Drops file in System32 directory 1 IoCs
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Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
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Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
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Suspicious use of SetThreadContext 1 IoCs
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Drops file in Windows directory 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
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Delays execution with timeout.exe 1 IoCs
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Suspicious behavior: MapViewOfSection 1 IoCs
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Suspicious use of WriteProcessMemory 13 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Gen.Variant.Nemesis.16281.18907.11936.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Gen.Variant.Nemesis.16281.18907.11936.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Gen.Variant.Nemesis.16281.18907.11936.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Gen.Variant.Nemesis.16281.18907.11936.exe"2⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Gen.Variant.Nemesis.16281.18907.11936.exe" & exit3⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 54⤵
- Delays execution with timeout.exe
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
133KB
MD58f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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Filesize
1.2MB
MD5bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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Filesize
11KB
MD517ed1c86bd67e78ade4712be48a7d2bd
SHA11cc9fe86d6d6030b4dae45ecddce5907991c01a0
SHA256bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb
SHA5120cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5
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Filesize
584KB
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Filesize
16.4MB
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Filesize
94.6MB
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Filesize
16.4MB
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Filesize
94.6MB
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Filesize
16.4MB
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Filesize
1.5MB
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Filesize
94.6MB
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Filesize
1.7MB
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Filesize
1.5MB
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Filesize
16.4MB
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Filesize
16.4MB
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Filesize
244KB
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Filesize
16.4MB
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Filesize
1.7MB
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Filesize
8KB
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Filesize
1.5MB
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Filesize
1.7MB
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Filesize
1.5MB
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Filesize
12.3MB
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Filesize
1.5MB
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Filesize
1.5MB
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Filesize
12.3MB
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Filesize
1.5MB