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

Summary | ZeroBOX

CHROM.exe

.NET framework(MSIL) Malicious Library PE32 PE File .NET EXE

Category	Machine	Started	Completed
FILE	s1_win7_x6403_us	Feb. 21, 2025, 4:27 p.m.	Feb. 21, 2025, 4:29 p.m.

Size	9.0KB
Type	PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5	`060fb89b755c0c9d89fb267da38ebe8d`
SHA256	`d758a1980976d60297f8c5ae104301a1d94951419ef776ec11d92dba8c5f3131`
CRC32	`81A37D26`
ssdeep	`192:cAqy/lUBUui1wGaFxrBkLwapLM2IwKfFZVL5LQLvF7NdGSdfHJnSf:cAqy/2OwGaFvkLwaLVIwSFZVL5LQLthU`
PDB Path	C:\Users\Egor\source\repos\WindowsFormsApp25\WindowsFormsApp25\obj\Debug\WindowsFormsApp25.pdb
Yara	Malicious_Library_Zero - Malicious_Library PE_Header_Zero - PE File Signature Win32_Trojan_PWS_Net_1_Zero - Win32 Trojan PWS .NET Azorult Is_DotNET_EXE - (no description) IsPE32 - (no description)

CHROM.exe "C:\Users\test22\AppData\Local\Temp\CHROM.exe"
1372

Name	Response	Post-Analysis Lookup
No hosts contacted.

IP Address	Status	Action
23.49.154.73	Active	Moloch

Suricata Alerts

No Suricata Alerts

Suricata TLS

No Suricata TLS

Checks if process is being debugged by a debugger (2 events)

Time & API	Arguments	Status	Return	Repeated
IsDebuggerPresent Feb. 21, 2025, 4:27 p.m.			0	0
IsDebuggerPresent Feb. 21, 2025, 4:27 p.m.			0	0

This executable has a PDB path (1 event)

pdb_path

C:\Users\Egor\source\repos\WindowsFormsApp25\WindowsFormsApp25\obj\Debug\WindowsFormsApp25.pdb

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 Feb. 21, 2025, 4:27 p.m.		1	1	0

Allocates read-write-execute memory (usually to unpack itself) (13 events)

Time & API	Arguments	Status	Return	Repeated
NtAllocateVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 region_size: 2228224 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00c20000 allocation_type: 8192 (MEM_RESERVE) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00e00000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtProtectVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x73f31000 process_handle: 0xffffffff	1	0	0
NtProtectVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x73f32000 process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 region_size: 1835008 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x02240000 allocation_type: 8192 (MEM_RESERVE) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x023c0000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x002d2000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00305000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x0030b000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00307000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x002ec000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x00510000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory Feb. 21, 2025, 4:27 p.m.	process_identifier: 1372 region_size: 4096 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x002da000 allocation_type: 4096 (MEM_COMMIT) process_handle: 0xffffffff	1	0	0

File has been identified by 7 AntiVirus engines on VirusTotal as malicious (7 events)

Bkav	W32.AIDetectMalware.CS
Cylance	Unsafe
CrowdStrike	win/malicious_confidence_90% (W)
Elastic	malicious (moderate confidence)
FireEye	Generic.mg.060fb89b755c0c9d
DeepInstinct	MALICIOUS
Malwarebytes	Trojan.Downloader.MSIL.Generic

Communicates with host for which no DNS query was performed (1 event)

host

23.49.154.73

Connects to an IP address that is no longer responding to requests (legitimate services will remain up-and-running usually) (1 event)

dead_host

23.49.154.73:443