stealerium | ccf5a47144d4d2e99d2cb7fa4d620c18422e1a85da05ed46f2f574cd671cc335

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
02-06-2024 08:07

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General

Target

build.exe
Size

1.6MB
MD5

2b295d7ed694fd5f8d154e2809dde5c7
SHA1

8fe4226bfd0795bc92ad62a518e1c5313a1063c2
SHA256

ccf5a47144d4d2e99d2cb7fa4d620c18422e1a85da05ed46f2f574cd671cc335
SHA512

f1cc93b2bd0d56c604dd601dc34a5152382b553e847d08fedc48f08ad1badfdd7dace981e2e1837db2bda22f3b3f1be2269047ddd40a591b29a2fe1b876c8d43
SSDEEP

49152:skTq24GjdGSiqkqXfd+/9AqYanieKds1:s1EjdGSiqkqXf0FLYW

Score

10^/10

stealerium collection spyware stealer

Malware Config

Extracted

Family

stealerium

https://discord.com/api/webhooks/1246735852525326437/GcTg3JPGVTvvvYi6IMfM_bflcLd6mmUk7zrqDc3jqVTKiN4-XEedjVbl6jUHpWD6Vdzi

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-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service
T1102

Processes:

flow ioc

18 discord.com
37 discord.com
17 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

22 icanhazip.com

flow	ioc
18	discord.com
37	discord.com
17	discord.com

flow	ioc
22	icanhazip.com

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 64 IoCs

Processes:

build.exe

pid	process
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe
4984	build.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

build.exemsiexec.exe

description pid process

Token: SeDebugPrivilege 4984 build.exe
Token: SeSecurityPrivilege 5076 msiexec.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

build.exe

pid process

4984 build.exe

description	pid	process
Token: SeDebugPrivilege	4984	build.exe
Token: SeSecurityPrivilege	5076	msiexec.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

build.execmd.execmd.exe

description	pid	process	target process
PID 4984 wrote to memory of 4700	4984	build.exe	cmd.exe
PID 4984 wrote to memory of 4700	4984	build.exe	cmd.exe
PID 4984 wrote to memory of 4700	4984	build.exe	cmd.exe
PID 4700 wrote to memory of 4568	4700	cmd.exe	chcp.com
PID 4700 wrote to memory of 4568	4700	cmd.exe	chcp.com
PID 4700 wrote to memory of 4568	4700	cmd.exe	chcp.com
PID 4700 wrote to memory of 3856	4700	cmd.exe	netsh.exe
PID 4700 wrote to memory of 3856	4700	cmd.exe	netsh.exe
PID 4700 wrote to memory of 3856	4700	cmd.exe	netsh.exe
PID 4700 wrote to memory of 3308	4700	cmd.exe	findstr.exe
PID 4700 wrote to memory of 3308	4700	cmd.exe	findstr.exe
PID 4700 wrote to memory of 3308	4700	cmd.exe	findstr.exe
PID 4984 wrote to memory of 1400	4984	build.exe	cmd.exe
PID 4984 wrote to memory of 1400	4984	build.exe	cmd.exe
PID 4984 wrote to memory of 1400	4984	build.exe	cmd.exe
PID 1400 wrote to memory of 4360	1400	cmd.exe	chcp.com
PID 1400 wrote to memory of 4360	1400	cmd.exe	chcp.com
PID 1400 wrote to memory of 4360	1400	cmd.exe	chcp.com
PID 1400 wrote to memory of 3892	1400	cmd.exe	netsh.exe
PID 1400 wrote to memory of 3892	1400	cmd.exe	netsh.exe
PID 1400 wrote to memory of 3892	1400	cmd.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

build.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\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-1-5-21-3571316656-3665257725-2415531812-1000\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 SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:4984

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
2⤵
- Suspicious use of WriteProcessMemory
PID:4700

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:4568

C:\Windows\SysWOW64\netsh.exe
netsh wlan show profile
3⤵
PID:3856

C:\Windows\SysWOW64\findstr.exe
findstr All
3⤵
PID:3308

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
2⤵
- Suspicious use of WriteProcessMemory
PID:1400

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:4360

C:\Windows\SysWOW64\netsh.exe
netsh wlan show networks mode=bssid
3⤵
PID:3892

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5076

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Web Service

T1102

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\8e5b842b14f0a3dcb27b8496c36b0352\Admin@YCLEXTAL_en-US\Browsers\Firefox\Bookmarks.txt
Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\8e5b842b14f0a3dcb27b8496c36b0352\Admin@YCLEXTAL_en-US\Directories\OneDrive.txt
Filesize
25B

MD5
966247eb3ee749e21597d73c4176bd52

SHA1
1e9e63c2872cef8f015d4b888eb9f81b00a35c79

SHA256
8ddfc481b1b6ae30815ecce8a73755862f24b3bb7fdebdbf099e037d53eb082e

SHA512
bd30aec68c070e86e3dec787ed26dd3d6b7d33d83e43cb2d50f9e2cff779fee4c96afbbe170443bd62874073a844beb29a69b10c72c54d7d444a8d86cfd7b5aa

Download Submit
C:\Users\Admin\AppData\Local\8e5b842b14f0a3dcb27b8496c36b0352\Admin@YCLEXTAL_en-US\Directories\Startup.txt
Filesize
24B

MD5
68c93da4981d591704cea7b71cebfb97

SHA1
fd0f8d97463cd33892cc828b4ad04e03fc014fa6

SHA256
889ed51f9c16a4b989bda57957d3e132b1a9c117ee84e208207f2fa208a59483

SHA512
63455c726b55f2d4de87147a75ff04f2daa35278183969ccf185d23707840dd84363bec20d4e8c56252196ce555001ca0e61b3f4887d27577081fdef9e946402

Download Submit
C:\Users\Admin\AppData\Local\8e5b842b14f0a3dcb27b8496c36b0352\Admin@YCLEXTAL_en-US\Directories\Videos.txt
Filesize
23B

MD5
1fddbf1169b6c75898b86e7e24bc7c1f

SHA1
d2091060cb5191ff70eb99c0088c182e80c20f8c

SHA256
a67aa329b7d878de61671e18cd2f4b011d11cbac67ea779818c6dafad2d70733

SHA512
20bfeafde7fec1753fef59de467bd4a3dd7fe627e8c44e95fe62b065a5768c4508e886ec5d898e911a28cf6365f455c9ab1ebe2386d17a76f53037f99061fd4d

Download Submit
C:\Users\Admin\AppData\Local\8e5b842b14f0a3dcb27b8496c36b0352\Admin@YCLEXTAL_en-US\System\Apps.txt
Filesize
6KB

MD5
f5b7879a4090071290baaea32286f32f

SHA1
d912a731d51980145a29f51c22eb2942969adda3

SHA256
aa60030804399c5561977f157626c51ddb1f69a7e5f308d1981f898a822e0334

SHA512
9ff82276ea8f83c67dc9119c4ffa131adc1ada0bc9e93eee6e6096d48d243105ab3bf590314872dab729166c31abd572b1ed6bfc9c85a97ef016a97a09e1e7e3

Download Submit
C:\Users\Admin\AppData\Local\8e5b842b14f0a3dcb27b8496c36b0352\Admin@YCLEXTAL_en-US\System\Debug.txt
Filesize
1KB

MD5
72381c937d120e2ab8ddc7737f8510f3

SHA1
31ef788bee5aa6915198e12ce9764e08d0987b81

SHA256
0e84ae676c65981f83e1ebf381ef7ef1a7f333c4b1d2404f68904cb586e45831

SHA512
f06e63fbe5484bf2f1b9fff167716b651956dc9e0a9511fbec4d71ffea4d05e0376ff2dd351e6964cc31c9f7661b25697b2508439488d88c9c54899d5d3b5e56

Download Submit
C:\Users\Admin\AppData\Local\8e5b842b14f0a3dcb27b8496c36b0352\Admin@YCLEXTAL_en-US\System\Process.txt
Filesize
4KB

MD5
114f9cc68caffdb39a369cbf4692a79b

SHA1
11cb730622d8feec02892ff497ef3e17296241d2

SHA256
55823624cf80fd9c02f71eb056f5e6c0b079e42e86c84cb373dab9d1c803df54

SHA512
7256d5778b5d0ffce4b9e63510430eb7418597cbbfba39d3c64f8dd8984cc260c695ff17630f1879221eb2916030edc76209123d9abbce1cd7dd8bc1354324ab

Download Submit
C:\Users\Admin\AppData\Local\8e5b842b14f0a3dcb27b8496c36b0352\Admin@YCLEXTAL_en-US\System\ProductKey.txt
Filesize
29B

MD5
71eb5479298c7afc6d126fa04d2a9bde

SHA1
a9b3d5505cf9f84bb6c2be2acece53cb40075113

SHA256
f6cadfd4e4c25ff3b8cffe54a2af24a757a349abbf4e1142ec4c9789347fe8b3

SHA512
7c6687e21d31ec1d6d2eff04b07b465f875fd80df26677f1506b14158444cf55044eb6674880bd5bd44f04ff73023b26cb19b8837427a1d6655c96df52f140bd

Download Submit
C:\Users\Admin\AppData\Local\8e5b842b14f0a3dcb27b8496c36b0352\msgid.dat
Filesize
19B

MD5
89ed7f0a4008dd467557b16348a486f4

SHA1
91568c48aa2e9ebaac77be8efd0c4cf008e9aa69

SHA256
534fc3754d57e880a724b841693b0adc245c65e918e77bd08117dd3d5e42e5c7

SHA512
78eea1b7f8d3be886c8814451ea9eb1a02d7c3bc8bdc1e147aaa47ebe5a8f11f44cc76a3835839b65ae68e6f16b2fa666951f04c13473541c05496b1fa7272c3

Download Submit
memory/4984-10-0x00000000060A0000-0x00000000060AA000-memory.dmp

Filesize
40KB

Download
memory/4984-7-0x00000000050C0000-0x0000000005152000-memory.dmp

Filesize
584KB

Download
memory/4984-69-0x00000000068E0000-0x0000000006972000-memory.dmp

Filesize
584KB

Download
memory/4984-75-0x0000000006F30000-0x00000000074D4000-memory.dmp

Filesize
5.6MB

Download
memory/4984-11-0x00000000060B0000-0x00000000060B8000-memory.dmp

Filesize
32KB

Download
memory/4984-0-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/4984-203-0x00000000061C0000-0x000000000623A000-memory.dmp

Filesize
488KB

Download
memory/4984-9-0x0000000005180000-0x0000000005188000-memory.dmp

Filesize
32KB

Download
memory/4984-8-0x0000000005150000-0x0000000005176000-memory.dmp

Filesize
152KB

Download
memory/4984-12-0x00000000060D0000-0x00000000060EE000-memory.dmp

Filesize
120KB

Download
memory/4984-3-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download
memory/4984-2-0x0000000004B30000-0x0000000004B96000-memory.dmp

Filesize
408KB

Download
memory/4984-276-0x0000000006680000-0x0000000006732000-memory.dmp

Filesize
712KB

Download
memory/4984-278-0x00000000062A0000-0x00000000062C2000-memory.dmp

Filesize
136KB

Download
memory/4984-279-0x0000000007970000-0x0000000007CC4000-memory.dmp

Filesize
3.3MB

Download
memory/4984-280-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/4984-282-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download
memory/4984-1-0x0000000000010000-0x00000000001A2000-memory.dmp

Filesize
1.6MB

Download
memory/4984-293-0x00000000067C0000-0x00000000067CA000-memory.dmp

Filesize
40KB

Download