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

Summary | ZeroBOX

ChromeSetup.exe

Malicious Library UPX PE32 PE File DLL

Category	Machine	Started	Completed
FILE	s1_win7_x6403_us	July 30, 2023, 8:49 a.m.	July 30, 2023, 8:53 a.m.

Size	398.1KB
Type	PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive
MD5	`1f4365fb20db051b2b510416ee167971`
SHA256	`7f68efee50129fb2c25b58908d378d5d716113090c0169aa2dee3cec7f808421`
CRC32	`D4065305`
ssdeep	`6144:pBe337n8xkABZYQkutr1+8nkTN5044WYtiT+ab4nX55MjFGC9:q7LABZYQkul17kTXW9vab4X55MjFl9`
Yara	UPX_Zero - UPX packed file Malicious_Library_Zero - Malicious_Library PE_Header_Zero - PE File Signature IsPE32 - (no description)

ChromeSetup.exe "C:\Users\test22\AppData\Local\Temp\ChromeSetup.exe"
2032

Name	Response	Post-Analysis Lookup
No hosts contacted.

IP Address	Status	Action
162.55.60.2	Active	Moloch

Suricata Alerts

No Suricata Alerts

Suricata TLS

No Suricata TLS

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 July 30, 2023, 8:49 a.m.		1	1	0

The executable contains unknown PE section names indicative of a packer (could be a false positive) (1 event)

section

.ndata

Allocates read-write-execute memory (usually to unpack itself) (2 events)

Time & API	Arguments	Status	Return	Repeated
NtProtectVirtualMemory July 30, 2023, 8:49 a.m.	process_identifier: 2032 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x10004000 process_handle: 0xffffffff	1	0	0
NtAllocateVirtualMemory July 30, 2023, 8:49 a.m.	process_identifier: 2032 region_size: 68562944 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x03a40000 allocation_type: 12288 (MEM_COMMIT\|MEM_RESERVE) process_handle: 0xffffffff	1	0	0

Creates executable files on the filesystem (1 event)

file	C:\Users\test22\AppData\Local\Temp\nsiC2CF.tmp\System.dll

Drops an executable to the user AppData folder (1 event)

file	C:\Users\test22\AppData\Local\Temp\nsiC2CF.tmp\System.dll

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

host

162.55.60.2