stealerium | 7bd56ac11de93618d1c3338f1b4e9f7c8bf8e3a2ee254ed23267dcf69c4b9228

General

Target

build.exe
Size

1.6MB
MD5

0e397be3c8293b8c8ae2926fb0f567f4
SHA1

c614f3aa4e86659d7de773624442c150c1f5e116
SHA256

7bd56ac11de93618d1c3338f1b4e9f7c8bf8e3a2ee254ed23267dcf69c4b9228
SHA512

6a13f606c96561aae19bee94aecd6845670544ecf2fa6ae0cbf6a39d7dcc8d185c93749853e265ed57fb6fccd0389ce39a4263ae55a9d2e6da65436a992081d6
SSDEEP

49152:dcTq24GjdGSiqkqXfd+/9AqYanieKdE6:d9EjdGSiqkqXf0FLYW

Score

10^/10

stealerium collection credential_access discovery persistence privilege_escalation spyware stealer

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1277002169228329034/OyCrY6viIsTRXw5-ShVKLRVCfZ-19DGZYjCzY2esz3GQM_KdL3XLbGol672T3FSHBg_G

Signatures

Stealerium
An open source info stealer written in C# first seen in May 2022.
stealer stealerium
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Reads user/profile data of web browsers 2 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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
27	discord.com
28	discord.com

Looks up external IP address via web service 1 IoCs

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

flow	ioc
33	icanhazip.com

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4548	2744	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 8 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	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	findstr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	build.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

discovery

Wi-Fi Discovery

T1016.002

pid	Process
2828	cmd.exe
4404	netsh.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	build.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	build.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe
2744	build.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	build.exe
Token: SeSecurityPrivilege	4492	msiexec.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 2828	2744	build.exe	95
PID 2744 wrote to memory of 2828	2744	build.exe	95
PID 2744 wrote to memory of 2828	2744	build.exe	95
PID 2828 wrote to memory of 4316	2828	cmd.exe	98
PID 2828 wrote to memory of 4316	2828	cmd.exe	98
PID 2828 wrote to memory of 4316	2828	cmd.exe	98
PID 2828 wrote to memory of 4404	2828	cmd.exe	99
PID 2828 wrote to memory of 4404	2828	cmd.exe	99
PID 2828 wrote to memory of 4404	2828	cmd.exe	99
PID 2828 wrote to memory of 1768	2828	cmd.exe	100
PID 2828 wrote to memory of 1768	2828	cmd.exe	100
PID 2828 wrote to memory of 1768	2828	cmd.exe	100
PID 2744 wrote to memory of 4072	2744	build.exe	103
PID 2744 wrote to memory of 4072	2744	build.exe	103
PID 2744 wrote to memory of 4072	2744	build.exe	103
PID 4072 wrote to memory of 5076	4072	cmd.exe	105
PID 4072 wrote to memory of 5076	4072	cmd.exe	105
PID 4072 wrote to memory of 5076	4072	cmd.exe	105
PID 4072 wrote to memory of 1168	4072	cmd.exe	106
PID 4072 wrote to memory of 1168	4072	cmd.exe	106
PID 4072 wrote to memory of 1168	4072	cmd.exe	106

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe

C:\Users\Admin\AppData\Local\Temp\build.exe
"C:\Users\Admin\AppData\Local\Temp\build.exe"
1⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2744
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Wi-Fi Discovery
  - Suspicious use of WriteProcessMemory
  PID:2828
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4316
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:4404
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1768
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4072
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5076
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2744 -s 2128
  2⤵
  - Program crash
  PID:4548

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2744 -ip 2744
1⤵
PID:2528

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

System Network Configuration Discovery

1

T1016

Wi-Fi Discovery

1

T1016.002

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\f09b0b8936b18c58dbe21e16520e5787\Admin@PVMNUDVD_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\f09b0b8936b18c58dbe21e16520e5787\Admin@PVMNUDVD_en-US\Directories\OneDrive.txt

Filesize
25B

MD5
966247eb3ee749e21597d73c4176bd52

SHA1
1e9e63c2872cef8f015d4b888eb9f81b00a35c79

SHA256
8ddfc481b1b6ae30815ecce8a73755862f24b3bb7fdebdbf099e037d53eb082e

SHA512
bd30aec68c070e86e3dec787ed26dd3d6b7d33d83e43cb2d50f9e2cff779fee4c96afbbe170443bd62874073a844beb29a69b10c72c54d7d444a8d86cfd7b5aa

Download Submit
C:\Users\Admin\AppData\Local\f09b0b8936b18c58dbe21e16520e5787\Admin@PVMNUDVD_en-US\Directories\Startup.txt

Filesize
24B

MD5
68c93da4981d591704cea7b71cebfb97

SHA1
fd0f8d97463cd33892cc828b4ad04e03fc014fa6

SHA256
889ed51f9c16a4b989bda57957d3e132b1a9c117ee84e208207f2fa208a59483

SHA512
63455c726b55f2d4de87147a75ff04f2daa35278183969ccf185d23707840dd84363bec20d4e8c56252196ce555001ca0e61b3f4887d27577081fdef9e946402

Download Submit
C:\Users\Admin\AppData\Local\f09b0b8936b18c58dbe21e16520e5787\Admin@PVMNUDVD_en-US\Directories\Videos.txt

Filesize
23B

MD5
1fddbf1169b6c75898b86e7e24bc7c1f

SHA1
d2091060cb5191ff70eb99c0088c182e80c20f8c

SHA256
a67aa329b7d878de61671e18cd2f4b011d11cbac67ea779818c6dafad2d70733

SHA512
20bfeafde7fec1753fef59de467bd4a3dd7fe627e8c44e95fe62b065a5768c4508e886ec5d898e911a28cf6365f455c9ab1ebe2386d17a76f53037f99061fd4d

Download Submit
C:\Users\Admin\AppData\Local\f09b0b8936b18c58dbe21e16520e5787\Admin@PVMNUDVD_en-US\System\Apps.txt

Filesize
6KB

MD5
fbb04a5363a8700a687df7174f365a3b

SHA1
8c900bd2910ab076b123b44aa8aa700d42d40454

SHA256
9fe902f25310da36e921c890830bead6b9b3ed255ebc2aec1e109c753a9af223

SHA512
be89bacab2eaa068a25b9bdd2f45266561878ce321991237cb0f8e0334e09b765ab0fbb7a03c4eec0f24805da0d31ef39e564b3b1b56222e88b539e00eea9008

Download Submit
C:\Users\Admin\AppData\Local\f09b0b8936b18c58dbe21e16520e5787\Admin@PVMNUDVD_en-US\System\Debug.txt

Filesize
1KB

MD5
3eb891be9752a4d576a72c0ee0c2359f

SHA1
93605c76ce58b251996a00ba8158fc0d5b2b5390

SHA256
45272fb50a928d9f4c4a3be2d0d05880dd9eee6b9302c7a8875f74fe171a8750

SHA512
f9065da8e3aa403a5895e08a127ec6cc97bb21c96948af71a464f4964d337b8862c2e5b35e8260219611de71f668c97329cf2420a44cf18bba8cec34adb08012

Download Submit
C:\Users\Admin\AppData\Local\f09b0b8936b18c58dbe21e16520e5787\Admin@PVMNUDVD_en-US\System\Process.txt

Filesize
4KB

MD5
df2b8e0b2ce8c3336eebe229a361e030

SHA1
50d32ede02c50e85a69593123f46019d2c1298ec

SHA256
66375a526585b70bfdeac8e73ca78580cf7f13e67e00c1b35bab79ce6abdef64

SHA512
d140a6d9c0f088572893fbb6e30f03d82d45d8fb4b856a92d7a5076ee131943d1f66ac4a815086d33f111c867d6502ddbc7634a25ce42dc064d7e52efd91c93b

Download Submit
C:\Users\Admin\AppData\Local\f09b0b8936b18c58dbe21e16520e5787\Admin@PVMNUDVD_en-US\System\ProductKey.txt

Filesize
29B

MD5
71eb5479298c7afc6d126fa04d2a9bde

SHA1
a9b3d5505cf9f84bb6c2be2acece53cb40075113

SHA256
f6cadfd4e4c25ff3b8cffe54a2af24a757a349abbf4e1142ec4c9789347fe8b3

SHA512
7c6687e21d31ec1d6d2eff04b07b465f875fd80df26677f1506b14158444cf55044eb6674880bd5bd44f04ff73023b26cb19b8837427a1d6655c96df52f140bd

Download Submit
memory/2744-12-0x0000000006FB0000-0x0000000006FB8000-memory.dmp

Filesize
32KB

Download
memory/2744-209-0x0000000007350000-0x00000000073CA000-memory.dmp

Filesize
488KB

Download
memory/2744-13-0x0000000006FD0000-0x0000000006FEE000-memory.dmp

Filesize
120KB

Download
memory/2744-14-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/2744-3-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/2744-71-0x0000000007610000-0x00000000076A2000-memory.dmp

Filesize
584KB

Download
memory/2744-73-0x0000000007C60000-0x0000000008204000-memory.dmp

Filesize
5.6MB

Download
memory/2744-11-0x0000000006FA0000-0x0000000006FAA000-memory.dmp

Filesize
40KB

Download
memory/2744-10-0x0000000006020000-0x0000000006028000-memory.dmp

Filesize
32KB

Download
memory/2744-7-0x00000000751EE000-0x00000000751EF000-memory.dmp

Filesize
4KB

Download
memory/2744-0-0x00000000751EE000-0x00000000751EF000-memory.dmp

Filesize
4KB

Download
memory/2744-9-0x0000000005FF0000-0x0000000006016000-memory.dmp

Filesize
152KB

Download
memory/2744-8-0x0000000005F60000-0x0000000005FF2000-memory.dmp

Filesize
584KB

Download
memory/2744-2-0x00000000058D0000-0x0000000005936000-memory.dmp

Filesize
408KB

Download
memory/2744-1-0x0000000000DB0000-0x0000000000F44000-memory.dmp

Filesize
1.6MB

Download
memory/2744-282-0x0000000007150000-0x0000000007202000-memory.dmp

Filesize
712KB

Download
memory/2744-284-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads