stealerium | 7a39cd859927f04609e190a5af8cb802f11bc959169773c3ecfeb92db0e23bb8

General

Target

build.exe
Size

1.6MB
MD5

07c8d38da8624208313728eb0d497006
SHA1

576c6b9c15d451c805aed2636079d59e80b9d944
SHA256

84b4149d68f1969bc9e8a50defc397211a4cfe6023f2fd0bc5cccd7f4acda7fe
SHA512

024f30c319a96d1bd6482034fd3bf85c15316797e6d60dd693a662bca73fe8d513b34db8b40a1a74149e89659ba0d7c77e38b2acce40bca38c48f1b841d6212b
SSDEEP

49152:HLTq24GjdGSiqkqXfd+/9AqYanieKdQK:HiEjdGSiqkqXf0FLYW

Score

10^/10

stealerium collection spyware stealer

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1234510856528728164/nFqIn7bd6bnTFMUgt7PK_8hX3jIZf38JR1mxd-DaAnfjOHNlSmQ03q7xPl-IWfe3ShJJ

Signatures

Stealerium
An open source info stealer written in C# first seen in May 2022.
stealer stealerium
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

Processes:

build.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe
Key opened	\REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe
Key opened	\REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe

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

Web Service
T1102

Processes:

flow ioc

1 discord.com
2 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.

Processes:

flow ioc

4 icanhazip.com
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3700 3428 WerFault.exe build.exe

flow	ioc
1	discord.com
2	discord.com

flow	ioc
4	icanhazip.com

pid	pid_target	process	target process
3700	3428	WerFault.exe	build.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

Processes:

build.exe

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 7 IoCs

Processes:

build.exe

pid process

3428 build.exe
3428 build.exe
3428 build.exe
3428 build.exe
3428 build.exe
3428 build.exe
3428 build.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

build.exemsiexec.exe

description pid process

Token: SeDebugPrivilege 3428 build.exe
Token: SeSecurityPrivilege 4188 msiexec.exe

pid	process
3428	build.exe
3428	build.exe
3428	build.exe
3428	build.exe
3428	build.exe
3428	build.exe
3428	build.exe

description	pid	process
Token: SeDebugPrivilege	3428	build.exe
Token: SeSecurityPrivilege	4188	msiexec.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

build.execmd.execmd.exe

description	pid	process	target process
PID 3428 wrote to memory of 4160	3428	build.exe	cmd.exe
PID 3428 wrote to memory of 4160	3428	build.exe	cmd.exe
PID 3428 wrote to memory of 4160	3428	build.exe	cmd.exe
PID 4160 wrote to memory of 4804	4160	cmd.exe	chcp.com
PID 4160 wrote to memory of 4804	4160	cmd.exe	chcp.com
PID 4160 wrote to memory of 4804	4160	cmd.exe	chcp.com
PID 4160 wrote to memory of 2572	4160	cmd.exe	netsh.exe
PID 4160 wrote to memory of 2572	4160	cmd.exe	netsh.exe
PID 4160 wrote to memory of 2572	4160	cmd.exe	netsh.exe
PID 4160 wrote to memory of 2892	4160	cmd.exe	findstr.exe
PID 4160 wrote to memory of 2892	4160	cmd.exe	findstr.exe
PID 4160 wrote to memory of 2892	4160	cmd.exe	findstr.exe
PID 3428 wrote to memory of 1644	3428	build.exe	cmd.exe
PID 3428 wrote to memory of 1644	3428	build.exe	cmd.exe
PID 3428 wrote to memory of 1644	3428	build.exe	cmd.exe
PID 1644 wrote to memory of 1440	1644	cmd.exe	chcp.com
PID 1644 wrote to memory of 1440	1644	cmd.exe	chcp.com
PID 1644 wrote to memory of 1440	1644	cmd.exe	chcp.com
PID 1644 wrote to memory of 5060	1644	cmd.exe	netsh.exe
PID 1644 wrote to memory of 5060	1644	cmd.exe	netsh.exe
PID 1644 wrote to memory of 5060	1644	cmd.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

build.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe

outlook_win_path 1 IoCs

Processes:

build.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1687926120-3022217735-1146543763-1000\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
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:3428

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
2⤵
- Suspicious use of WriteProcessMemory
PID:4160

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:4804

C:\Windows\SysWOW64\netsh.exe
netsh wlan show profile
3⤵
PID:2572

C:\Windows\SysWOW64\findstr.exe
findstr All
3⤵
PID:2892

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
2⤵
- Suspicious use of WriteProcessMemory
PID:1644

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:1440

C:\Windows\SysWOW64\netsh.exe
netsh wlan show networks mode=bssid
3⤵
PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3428 -s 3240
2⤵
- Program crash
PID:3700

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4188

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\54a6b1a8256a949c1f590d727e9cd425\Admin@DFZPKZRM_en-US\Browsers\Firefox\Bookmarks.txt
Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\54a6b1a8256a949c1f590d727e9cd425\Admin@DFZPKZRM_en-US\System\Apps.txt
Filesize
4KB

MD5
2640460603b8200f9cb24cd01275174f

SHA1
cd39498cba3d4f4742039a1091731f74db2fa9c0

SHA256
94f5ec486f4b2387c004fac0cfc5012c120cb7190c370ed09639056c10c5afcb

SHA512
e65173b4cc98aaaf92cc0e2b5446e1854a45253ab0a8e133a1c85a0cfc95beaac6842af432d61accbf9a193f1f711f6dced6a26d699ff1ee21e27ffbc74d6c62

Download Submit
memory/3428-11-0x0000000006AB0000-0x0000000006AB8000-memory.dmp

Filesize
32KB

Download
memory/3428-12-0x0000000006AD0000-0x0000000006AEE000-memory.dmp

Filesize
120KB

Download
memory/3428-7-0x0000000005B40000-0x0000000005BD2000-memory.dmp

Filesize
584KB

Download
memory/3428-8-0x0000000005BD0000-0x0000000005BF6000-memory.dmp

Filesize
152KB

Download
memory/3428-9-0x00000000056A0000-0x00000000056A8000-memory.dmp

Filesize
32KB

Download
memory/3428-10-0x00000000056B0000-0x00000000056BA000-memory.dmp

Filesize
40KB

Download
memory/3428-0-0x0000000000C10000-0x0000000000DA2000-memory.dmp

Filesize
1.6MB

Download
memory/3428-3-0x00000000056C0000-0x00000000056D0000-memory.dmp

Filesize
64KB

Download
memory/3428-2-0x00000000055C0000-0x0000000005626000-memory.dmp

Filesize
408KB

Download
memory/3428-53-0x0000000007520000-0x00000000075B2000-memory.dmp

Filesize
584KB

Download
memory/3428-60-0x0000000007AC0000-0x0000000007FBE000-memory.dmp

Filesize
5.0MB

Download
memory/3428-87-0x0000000073430000-0x0000000073B1E000-memory.dmp

Filesize
6.9MB

Download
memory/3428-88-0x00000000056C0000-0x00000000056D0000-memory.dmp

Filesize
64KB

Download
memory/3428-1-0x0000000073430000-0x0000000073B1E000-memory.dmp

Filesize
6.9MB

Download
memory/3428-114-0x0000000073430000-0x0000000073B1E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads