ec1693018b38ac8f2be71eaea9cbdb6bcb8911de5e56f9f69d8e06f1fec995f4

Analysis

max time kernel
93s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 16:27

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General

Target

unukfree.exe
Size

104KB
MD5

36f2c316d28bb22b746cd26e3e66ea81
SHA1

74cb4e47caae20d2e192b028fc6e5147c6a6ab4d
SHA256

01d0b09052dadc41652ebde5ca5f1879860c4eaedb85a9b240397fbf9728ecca
SHA512

5a925756ef86a440291dd25700072346f5480b207ad138256036792aafe0351889d21ca883c7d0e6e9b6bd45a5887f3fa6d15e4cfea6665b1d38856102474fd3
SSDEEP

1536:eQpQ5EP0ijnRTXJ+YRN6QcI0oMUgco9HoDunLSg5LP+R0WWcqFmKEEwBI3:eQIURTXJ+qLMUgUipWWcqkKEN2

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1904	Au_.exe

Loads dropped DLL 3 IoCs

pid	Process
1904	Au_.exe
1904	Au_.exe
1904	Au_.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	unukfree.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral22/files/0x000700000002348d-4.dat	nsis_installer_1
behavioral22/files/0x000700000002348d-4.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3508 wrote to memory of 1904	3508	unukfree.exe	82
PID 3508 wrote to memory of 1904	3508	unukfree.exe	82
PID 3508 wrote to memory of 1904	3508	unukfree.exe	82

C:\Users\Admin\AppData\Local\Temp\unukfree.exe
"C:\Users\Admin\AppData\Local\Temp\unukfree.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3508
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsuAC6E.tmp\InstallOptions.dll

Filesize
14KB

MD5
325b008aec81e5aaa57096f05d4212b5

SHA1
27a2d89747a20305b6518438eff5b9f57f7df5c3

SHA256
c9cd5c9609e70005926ae5171726a4142ffbcccc771d307efcd195dafc1e6b4b

SHA512
18362b3aee529a27e85cc087627ecf6e2d21196d725f499c4a185cb3a380999f43ff1833a8ebec3f5ba1d3a113ef83185770e663854121f2d8b885790115afdf

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C:\Users\Admin\AppData\Local\Temp\nsuAC6E.tmp\UAC.dll

Filesize
13KB

MD5
07841403d5371183c4eaa5cab50663fb

SHA1
b0cee6e01502fdd2ee775922051333d626c63906

SHA256
3a18cf504265ab2267e1545106217767877fa9db6e2b5dd0a3a761dead33a99b

SHA512
436c1932d4ff56a11673beac5416ac0f2c7e90e5b993b3b8c8f589069d655da40c3ed514b99291ddf06aad66b0a634896daac19adf459ff791dccf3234af0e05

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C:\Users\Admin\AppData\Local\Temp\nsuAC6E.tmp\ioSpecial.ini

Filesize
688B

MD5
184611c98be57a906538b06621ea150d

SHA1
8608996a0fe066f9da900e5a02b48dbddc01ff9a

SHA256
27105088b2058c919221b370835d1348304dff0de5ad2fa07ae46c60887ff5e0

SHA512
9389dbde893c5393d1021779bc25be8f1777a9a9fa017eac2acc86fd0c2528e52d6ddafa34d62f0cfb12f0fb299569ae558bfe98a483a87d554f2b1d50dd1596

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C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
104KB

MD5
36f2c316d28bb22b746cd26e3e66ea81

SHA1
74cb4e47caae20d2e192b028fc6e5147c6a6ab4d

SHA256
01d0b09052dadc41652ebde5ca5f1879860c4eaedb85a9b240397fbf9728ecca

SHA512
5a925756ef86a440291dd25700072346f5480b207ad138256036792aafe0351889d21ca883c7d0e6e9b6bd45a5887f3fa6d15e4cfea6665b1d38856102474fd3

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