Analysis
- max time kernel
119s - max time network
122s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
21/09/2021, 01:26
General
- Target 987c1348e107e270fce4f4fe7c2ef1d9.exe
- Size 145KB
- Sample210921-bth7zaadbp
- SHA256 797a08991698e42bc81d763c93ed0aa911eb22e9dec9e00bbd2e12865f867c21
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
- Executes dropped EXE 3 IoCs
- Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Themida packer 4 IoCs
Detects Themida, an advanced Windows software protection system.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Checks whether UAC is enabled 1 TTPs 2 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 12 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\987c1348e107e270fce4f4fe7c2ef1d9.exe"C:\Users\Admin\AppData\Local\Temp\987c1348e107e270fce4f4fe7c2ef1d9.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\6341532.exe"C:\ProgramData\6341532.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\ProgramData\6283454.exe"C:\ProgramData\6283454.exe"2⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\ProgramData\1479758.exe"C:\ProgramData\1479758.exe"2⤵
- Executes dropped EXE
- 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 v6
Replay Monitor
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Downloads
memory/1424-135-0x0000000007C80000-0x0000000007C81000-memory.dmp
memory/1424-138-0x0000000007B40000-0x0000000007B41000-memory.dmp
memory/1424-122-0x0000000000670000-0x0000000000671000-memory.dmp
memory/1424-124-0x0000000000DC0000-0x0000000000DC1000-memory.dmp
memory/1424-125-0x0000000005010000-0x0000000005011000-memory.dmp
memory/1424-128-0x0000000007970000-0x0000000007971000-memory.dmp
memory/1424-129-0x0000000008070000-0x0000000008071000-memory.dmp
memory/1424-130-0x0000000007BE0000-0x0000000007BE1000-memory.dmp
memory/1424-134-0x0000000008AA0000-0x0000000008AA1000-memory.dmp
memory/3596-117-0x0000000002B10000-0x0000000002B11000-memory.dmp
memory/3596-118-0x000000001B680000-0x000000001B682000-memory.dmp
memory/3596-115-0x0000000000A40000-0x0000000000A41000-memory.dmp
memory/3980-137-0x00000000061C0000-0x00000000061C1000-memory.dmp
memory/3980-158-0x00000000073E0000-0x00000000073E1000-memory.dmp
memory/3980-132-0x00000000013B0000-0x00000000013B1000-memory.dmp
memory/3980-139-0x0000000003950000-0x0000000003951000-memory.dmp
memory/3980-140-0x0000000005CC0000-0x0000000005CC1000-memory.dmp
memory/3980-141-0x0000000005AE0000-0x0000000005AE1000-memory.dmp
memory/3980-142-0x0000000005B20000-0x0000000005B21000-memory.dmp
memory/3980-136-0x0000000077170000-0x00000000772FE000-memory.dmp
memory/3980-145-0x0000000005BA0000-0x0000000005BA1000-memory.dmp
memory/3980-161-0x00000000076E0000-0x00000000076E1000-memory.dmp
memory/4484-155-0x00000000050A0000-0x00000000050A1000-memory.dmp
memory/4484-154-0x0000000077170000-0x00000000772FE000-memory.dmp
memory/4484-147-0x0000000000E00000-0x0000000000E01000-memory.dmp
memory/4484-170-0x0000000007AD0000-0x0000000007AD1000-memory.dmp