ac2a43af899bcd6cf9c543d0cda3f818e95ba458f30323879fddab116a161941

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14-02-2024 09:18

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General

Target

setup1.31.exe
Size

1.8MB
MD5

26a90f40ec53ec0ccbd942a4181a2bb1
SHA1

0ff8b60227cb8bbc44e2cc310e3eab7bc549b0f3
SHA256

e028fe537bb56b17538879f5ca317b558c750a44d4b5c78f8fbb5e6a62fbc8c5
SHA512

d4188733ee8c4c7aed738dd647ae193959a17371b947536fe20e01fb1040e64760002e0748cfd2f9b11c6cc6f431225cc793d7d01a85ce529e3d484008fa50e2
SSDEEP

49152:wl8eOFRXWnr3GuAy0rtrh/TOpopGYefxOj:wZznDh0zLpefE

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2836	irsetup.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000600000002321d-2.dat	upx
behavioral2/files/0x000600000002321d-3.dat	upx
behavioral2/memory/2836-4-0x0000000000400000-0x0000000000527000-memory.dmp	upx
behavioral2/memory/2836-15-0x0000000000400000-0x0000000000527000-memory.dmp	upx

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\º£´æÍøÅÌ Setup Log.txt	irsetup.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2836	irsetup.exe
2836	irsetup.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 2836	4740	setup1.31.exe	84
PID 4740 wrote to memory of 2836	4740	setup1.31.exe	84
PID 4740 wrote to memory of 2836	4740	setup1.31.exe	84

C:\Users\Admin\AppData\Local\Temp\setup1.31.exe
"C:\Users\Admin\AppData\Local\Temp\setup1.31.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Users\Admin\AppData\Local\Temp\_ir_sf7_temp_0\irsetup.exe
  __IRAOFF:520716 "__IRAFN:C:\Users\Admin\AppData\Local\Temp\setup1.31.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  PID:2836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\_ir_sf7_temp_0\irsetup.exe

Filesize
440KB

MD5
75ca7ff96bf5a316c3af2de6a412bd54

SHA1
0a093950790ff0dddff6f5f29c6b02c10997e0c5

SHA256
d95b5bf9ca97c1900de5357743282bab655d61d616606485088e1708559b7cf1

SHA512
b8da86f2f1e908955254e5168d0447f479cec7815a8b081a7b38eb87187cb2eb992109c67e006361b96bc1529ee8abc9dc477d78e9ca565e43f5415b492771d4

Download Submit
C:\Users\Admin\AppData\Local\Temp\_ir_sf7_temp_0\irsetup.exe

Filesize
128KB

MD5
33dbe44c853ca1cd72483904c0e00341

SHA1
734555a1519a84ffab96b6fd4155d63f33d05f42

SHA256
b69d5236df7b962f440766d3b60b5feaed6f3e4f83a791217706efa919f0f10a

SHA512
164b41a647fb54c510a1f6f04623e63614c101610bbb5dcaf6e25fd9ff3980c795f6e3e7f803cb35c11016281c70482be4b2e82b63d39ded53d5b0341d69c194

Download Submit
memory/2836-4-0x0000000000400000-0x0000000000527000-memory.dmp

Filesize
1.2MB

Download
memory/2836-15-0x0000000000400000-0x0000000000527000-memory.dmp

Filesize
1.2MB

Download