Analysis
- max time kernel
70s - max time network
128s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
- submitted
18/01/2023, 04:28
General
- Target SecuriteInfo.com.Variant.Lazy.286599.7821.8237.exe
- Size 1.8MB
- Sample230118-e3p9esea41
- SHA256 3d3fe471d5702b4a73c7374dbab85b88fc3c209968c6804440e3322153ad64bd
Malware Config
Signatures
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Modifies system certificate store 2 TTPs 6 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Lazy.286599.7821.8237.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Lazy.286599.7821.8237.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KuNFsHLTlSXsX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4377.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Lazy.286599.7821.8237.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 18643⤵
- Program crash
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmp4377.tmp
memory/1160-54-0x00000000010F0000-0x00000000012B8000-memory.dmp
memory/1160-55-0x0000000075A91000-0x0000000075A93000-memory.dmp
memory/1160-56-0x00000000003D0000-0x00000000003DE000-memory.dmp
memory/1160-57-0x0000000008210000-0x000000000831E000-memory.dmp
memory/1160-58-0x0000000007E00000-0x0000000007EC2000-memory.dmp
memory/1360-62-0x0000000000400000-0x00000000004C2000-memory.dmp
memory/1360-64-0x0000000000400000-0x00000000004C2000-memory.dmp
memory/1360-65-0x0000000000400000-0x00000000004C2000-memory.dmp
memory/1360-66-0x0000000000400000-0x00000000004C2000-memory.dmp
memory/1360-69-0x0000000000400000-0x00000000004C2000-memory.dmp
memory/1360-71-0x0000000000400000-0x00000000004C2000-memory.dmp
memory/1360-73-0x0000000000A00000-0x0000000000A0E000-memory.dmp
memory/1360-74-0x0000000008300000-0x00000000083B2000-memory.dmp
memory/1360-61-0x0000000000400000-0x00000000004C2000-memory.dmp