526b2fb2b106d34aa1f40dd97e6586b9a67f66dc185977a5abe66e3ce39527ca

Analysis

max time kernel
90s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
25/11/2022, 16:51

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General

Target

526b2fb2b106d34aa1f40dd97e6586b9a67f66dc185977a5abe66e3ce39527ca.exe
Size

951KB
MD5

4c6222ca95fd39336acbf8aaa7b76749
SHA1

59f6fe0ad4027b3d04092b222c37493297720b8f
SHA256

526b2fb2b106d34aa1f40dd97e6586b9a67f66dc185977a5abe66e3ce39527ca
SHA512

6bb2979ad2ec81a819b32306dcc5e119794c0c0a1f3ed3f3ed544104329f8f03c0b4d08e759b8f564246ccca226b98ef8b95566904ed40a4c6ce41e7643f2dfc
SSDEEP

24576:esSzlEqF+hVcOWnSfWVwmL5DeHisvQB9InU:wl8eOOSfww9Csc9InU

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1500	irsetup.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0001000000022deb-133.dat	upx
behavioral2/files/0x0001000000022deb-134.dat	upx
behavioral2/memory/1500-135-0x0000000000400000-0x0000000000527000-memory.dmp	upx
behavioral2/memory/1500-136-0x0000000000400000-0x0000000000527000-memory.dmp	upx

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\QQºÅÂë×¢²áÍõÏµÁÐ Setup Log.txt	irsetup.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1500	irsetup.exe
1500	irsetup.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4640 wrote to memory of 1500	4640	526b2fb2b106d34aa1f40dd97e6586b9a67f66dc185977a5abe66e3ce39527ca.exe	80
PID 4640 wrote to memory of 1500	4640	526b2fb2b106d34aa1f40dd97e6586b9a67f66dc185977a5abe66e3ce39527ca.exe	80
PID 4640 wrote to memory of 1500	4640	526b2fb2b106d34aa1f40dd97e6586b9a67f66dc185977a5abe66e3ce39527ca.exe	80

C:\Users\Admin\AppData\Local\Temp\526b2fb2b106d34aa1f40dd97e6586b9a67f66dc185977a5abe66e3ce39527ca.exe
"C:\Users\Admin\AppData\Local\Temp\526b2fb2b106d34aa1f40dd97e6586b9a67f66dc185977a5abe66e3ce39527ca.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4640
- C:\Users\Admin\AppData\Local\Temp\_ir_sf7_temp_0\irsetup.exe
  __IRAOFF:520716 "__IRAFN:C:\Users\Admin\AppData\Local\Temp\526b2fb2b106d34aa1f40dd97e6586b9a67f66dc185977a5abe66e3ce39527ca.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  PID:1500

Network

MITRE ATT&CK Enterprise v6

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
440KB

MD5
75ca7ff96bf5a316c3af2de6a412bd54

SHA1
0a093950790ff0dddff6f5f29c6b02c10997e0c5

SHA256
d95b5bf9ca97c1900de5357743282bab655d61d616606485088e1708559b7cf1

SHA512
b8da86f2f1e908955254e5168d0447f479cec7815a8b081a7b38eb87187cb2eb992109c67e006361b96bc1529ee8abc9dc477d78e9ca565e43f5415b492771d4

Download Submit
memory/1500-135-0x0000000000400000-0x0000000000527000-memory.dmp

Filesize
1.2MB

Download
memory/1500-136-0x0000000000400000-0x0000000000527000-memory.dmp

Filesize
1.2MB

Download