759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f

Analysis

max time kernel
57s
max time network
54s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03-10-2022 02:30

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General

Target

759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.exe
Size

241KB
MD5

5875354f7101978bb76a4933e8ca3237
SHA1

2743f4f1e11dd761bf0b17ab67c5b0c3e19983c0
SHA256

759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f
SHA512

4b62dc54774450244fdab6f8171b53941d3f02dd27bd4e6f57413de43b195c359bb8b5ac8e2ba2d618935f48392f8f2c98ea5470819e2b3fc335f0f7cd7b68a7
SSDEEP

6144:zZXBsWqsE/Ao+mv8Qv0LVmwq4FU0nN876NKxVjStXrr6ke:lXmwRo+mv8QD4+0N46NKxVjU36ke

Score

8^/10

discovery

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
3	2040	WScript.exe
4	2040	WScript.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	cmd.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\YaHun\Poaaa\Uninstall.exe	759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.exe
File created	C:\Program Files (x86)\YaHun\Poaaa\Uninstall.ini	759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.exe
File opened for modification	C:\Program Files (x86)\YaHun\Poaaa\alkoid.vbs	759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.exe
File opened for modification	C:\Program Files (x86)\YaHun\Poaaa\mirniatom.bat	759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.exe
File opened for modification	C:\Program Files (x86)\YaHun\Poaaa\iosdbfvadj.jka	759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.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 8 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 1724	2004	759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.exe	28
PID 2004 wrote to memory of 1724	2004	759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.exe	28
PID 2004 wrote to memory of 1724	2004	759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.exe	28
PID 2004 wrote to memory of 1724	2004	759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.exe	28
PID 1724 wrote to memory of 2040	1724	cmd.exe	30
PID 1724 wrote to memory of 2040	1724	cmd.exe	30
PID 1724 wrote to memory of 2040	1724	cmd.exe	30
PID 1724 wrote to memory of 2040	1724	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.exe
"C:\Users\Admin\AppData\Local\Temp\759499f68441d675d7ad070da9621d5699f961c2f16d904d6de37493ef62435f.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Program Files (x86)\YaHun\Poaaa\mirniatom.bat" "
  2⤵
  - Drops file in Drivers directory
  - Suspicious use of WriteProcessMemory
  PID:1724
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Program Files (x86)\YaHun\Poaaa\alkoid.vbs"
    3⤵
    - Blocklisted process makes network request
    PID:2040

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\YaHun\Poaaa\alkoid.vbs

Filesize
143B

MD5
eff0e115cacfe4f16cdcf49003633164

SHA1
d964b65f6bced0f33872e3eb13b5f1e083bd62f9

SHA256
2c979821f0f813c61af53c5039bd6e5d5de8e124b99cca54f457a575b3fe1797

SHA512
d637c81634b259f164398b361fb949e6ad6070b88b40b03fbf513dd8dd255fae4e0de62cc39f79d9346f4801efcc50e39159bc5c15e23d1fae68e3cd439dfbd5

Download Submit
C:\Program Files (x86)\YaHun\Poaaa\iosdbfvadj.jka

Filesize
27B

MD5
213c0742081a9007c9093a01760f9f8c

SHA1
df53bb518c732df777b5ce19fc7c02dcb2f9d81b

SHA256
9681429a2b00c27fe6cb0453f255024813944a7cd460d18797e3c35e81c53d69

SHA512
55182c2e353a0027f585535a537b9c309c3bf57f47da54a16e0c415ed6633b725bf40e40a664b1071575feeb7e589d775983516728ec3e51e87a0a29010c4eb9

Download Submit
C:\Program Files (x86)\YaHun\Poaaa\mirniatom.bat

Filesize
1KB

MD5
740f72b3040a7e72aa4dde1f2ff33c8f

SHA1
453b6bfde3395ff0b1200243e23858bc9801f6e8

SHA256
541933727202d5a8421d9067320beec015a3e0329c299019131574492e77564c

SHA512
a96b46be24a7831fa2ca16292e8f6b3880e6f89dad3d0d60ba9ab42e49de5bbbc0a4bb1d14e534e306e16955e9d6d24130e4261553f40488f298d3c85910bf3f

Download Submit
memory/1724-55-0x0000000000000000-mapping.dmp

Download
memory/2004-54-0x0000000074AB1000-0x0000000074AB3000-memory.dmp

Filesize
8KB

Download
memory/2040-60-0x0000000000000000-mapping.dmp

Download