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Guide 2020-06-10
Version history 2020-06-10

Summary | ZeroBOX

uux.exe

Generic Malware PE32 PE File .NET EXE

Category	Machine	Started	Completed
FILE	s1_win7_x6401	Nov. 3, 2021, 4:50 p.m.	Nov. 3, 2021, 4:54 p.m.

Size	493.5KB
Type	PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5	`bd4ef60928a0418f2f42958444a3ffc4`
SHA256	`39c56ea74a5eeb35efc0dd8b13b42e2d1ee2014a2bdb331d9e36b2da4d714de5`
CRC32	`E3995553`
ssdeep	`6144:iVkLufhPPMKQmkSsfFG81e4jgDcTA25n4rL19K3MDmFCJw:hyXMKQmqoX4U4TAWSwM`
Yara	PE_Header_Zero - PE File Signature Generic_Malware_Zero - Generic Malware IsPE32 - (no description) Is_DotNET_EXE - (no description) Win_Backdoor_AsyncRAT_Zero - Win Backdoor AsyncRAT

uux.exe "C:\Users\test22\AppData\Local\Temp\uux.exe"
2772

Name	Response	Post-Analysis Lookup
No hosts contacted.

IP Address	Status	Action
No hosts contacted.

Suricata Alerts

No Suricata Alerts

Suricata TLS

No Suricata TLS

Queries for the computername (2 events)

Time & API	Arguments	Status	Return	Repeated
GetComputerNameA Nov. 3, 2021, 4:50 p.m.	computer_name: TEST22-PC	1	1	0
GetComputerNameW Nov. 3, 2021, 4:50 p.m.	computer_name: TEST22-PC	1	1	0

Checks if process is being debugged by a debugger (4 events)

Time & API	Arguments	Status	Return	Repeated
IsDebuggerPresent Nov. 3, 2021, 4:50 p.m.			0	0
IsDebuggerPresent Nov. 3, 2021, 4:50 p.m.			0	0
IsDebuggerPresent Nov. 3, 2021, 4:50 p.m.			0	0
IsDebuggerPresent Nov. 3, 2021, 4:50 p.m.			0	0

Checks amount of memory in system, this can be used to detect virtual machines that have a low amount of memory available (1 event)

Time & API	Arguments	Status	Return	Repeated
GlobalMemoryStatusEx Nov. 3, 2021, 4:50 p.m.		1	1	0

Allocates read-write-execute memory (usually to unpack itself) (11 events)

Time & API	Arguments	Status	Return	Repeated
NtAllocateVirtualMemory Nov. 3, 2021, 4:50 p.m.	process_identifier: 2772 region_size: 2097152 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x006e0000 allocation_type: 8192 (MEM_RESERVE) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Nov. 3, 2021, 4:50 p.m.	process_identifier: 2772 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x008a0000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtProtectVirtualMemory Nov. 3, 2021, 4:50 p.m.	process_identifier: 2772 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x72e31000 process_handle: 0xffffffff	1	0	0
NtProtectVirtualMemory Nov. 3, 2021, 4:50 p.m.	process_identifier: 2772 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x72e32000 process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Nov. 3, 2021, 4:50 p.m.	process_identifier: 2772 region_size: 327680 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x005d0000 allocation_type: 8192 (MEM_RESERVE) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Nov. 3, 2021, 4:50 p.m.	process_identifier: 2772 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x005e0000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Nov. 3, 2021, 4:50 p.m.	process_identifier: 2772 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00452000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Nov. 3, 2021, 4:50 p.m.	process_identifier: 2772 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0045a000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Nov. 3, 2021, 4:50 p.m.	process_identifier: 2772 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0048b000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Nov. 3, 2021, 4:50 p.m.	process_identifier: 2772 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00487000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Nov. 3, 2021, 4:50 p.m.	process_identifier: 2772 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00485000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0

File has been identified by 15 AntiVirus engines on VirusTotal as malicious (15 events)

Elastic	malicious (high confidence)
Cylance	Unsafe
Sangfor	Suspicious.Win32.Save.a
Cybereason	malicious.5686d6
Cyren	W32/MSIL_Kryptik.FZU.gen!Eldorado
ESET-NOD32	a variant of MSIL/Injector.VRI
APEX	Malicious
FireEye	Generic.mg.bd4ef60928a0418f
SentinelOne	Static AI - Malicious PE
Microsoft	Trojan:Win32/Sabsik.FL.B!ml
Ikarus	Trojan.MSIL.Injector
eGambit	Unsafe.AI_Score_99%
BitDefenderTheta	Gen:NN.ZemsilF.34236.Em0@aejLJGli
CrowdStrike	win/malicious_confidence_80% (D)
MaxSecure	Trojan.Malware.300983.susgen