d11b39b98f99cb98312e73698c11529f70fcaaf2a656beef5a65d13ea0f92c29

Analysis

max time kernel
53s
max time network
47s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
02/12/2022, 22:59

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General

Target

d11b39b98f99cb98312e73698c11529f70fcaaf2a656beef5a65d13ea0f92c29.exe
Size

1.8MB
MD5

315c6e293fe87cd8ccc99d64e4ced2ac
SHA1

0828c8dad08e56fc36c27383d44c0135fc1d13ba
SHA256

d11b39b98f99cb98312e73698c11529f70fcaaf2a656beef5a65d13ea0f92c29
SHA512

5230ff40e9e46fbc9b8b574f6b312bf237362e47c550a6ecb937d3607d5fdf2b88418910cdc17883004bf973da0c35e07db90729ea2bd7311532845c8d416741
SSDEEP

49152:AlonOUTI86fXOfG3CAfdkHWZcs1AzQ1CVix:AG/886vO9YdOWZcs6u

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1772	IFinst27.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1948-57-0x0000000000400000-0x000000000042B000-memory.dmp	upx
behavioral1/files/0x000c0000000054a8-56.dat	upx
behavioral1/memory/1772-59-0x0000000000400000-0x000000000042B000-memory.dmp	upx
behavioral1/memory/1772-60-0x0000000000400000-0x000000000042B000-memory.dmp	upx

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\IFinst27.exe	d11b39b98f99cb98312e73698c11529f70fcaaf2a656beef5a65d13ea0f92c29.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 WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 1772	1948	d11b39b98f99cb98312e73698c11529f70fcaaf2a656beef5a65d13ea0f92c29.exe	28
PID 1948 wrote to memory of 1772	1948	d11b39b98f99cb98312e73698c11529f70fcaaf2a656beef5a65d13ea0f92c29.exe	28
PID 1948 wrote to memory of 1772	1948	d11b39b98f99cb98312e73698c11529f70fcaaf2a656beef5a65d13ea0f92c29.exe	28
PID 1948 wrote to memory of 1772	1948	d11b39b98f99cb98312e73698c11529f70fcaaf2a656beef5a65d13ea0f92c29.exe	28

C:\Users\Admin\AppData\Local\Temp\d11b39b98f99cb98312e73698c11529f70fcaaf2a656beef5a65d13ea0f92c29.exe
"C:\Users\Admin\AppData\Local\Temp\d11b39b98f99cb98312e73698c11529f70fcaaf2a656beef5a65d13ea0f92c29.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\IFinst27.exe
  "C:\Windows\IFinst27.exe" -IC:\Users\Admin\AppData\Local\Temp\d11b39b98f99cb98312e73698c11529f70fcaaf2a656beef5a65d13ea0f92c29.exe
  2⤵
  - Executes dropped EXE
  PID:1772

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:\Windows\IFinst27.exe

Filesize
64KB

MD5
9c17bca3ef837bacded7e4299508e71d

SHA1
253c7e956ad6cb66e0e47e5d9a6a19d78e9c96e0

SHA256
2405e5479aeb7d43d1362969b9c439e5931b8f900f9adfe0faaa986365415193

SHA512
12c1c5dbdf763d6d361b9d412794b0d85b6134843114120b843f30db198a3a211e2c06eadd3ed25271b4cd06a7367df7dafc6b9b33b1bce479f3ad050caeb625

Download Submit
memory/1772-59-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1772-60-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1948-54-0x0000000075A11000-0x0000000075A13000-memory.dmp

Filesize
8KB

Download
memory/1948-57-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download