stealerium | 0651c2d33fe45643e1e6c85297fd9a361dec41567daf035f00c8bfa81e12d122

Resubmissions

Analysis

max time kernel
129s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 22:24

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General

Target

build.exe
Size

1.6MB
MD5

0f00ec8acd08f26ef6fcb2ff7792119c
SHA1

aca89906ae8ed315f7bb5ee5764860a431d04589
SHA256

0651c2d33fe45643e1e6c85297fd9a361dec41567daf035f00c8bfa81e12d122
SHA512

652db906239ada46dc959085a7c79598bcf8830e1aac8fc52f64ca4d1e5c094ae864ea078e4cac816fc1f4aa71004afdc41230574f1bec8b1d89c97d1983777f
SSDEEP

24576:3ei2Q9NXw2/wPOjdGxY2rqkqjVnlqud+/2P+A+ZecdyFoBkkAnexMrdgLmG:3JTq24GjdGSiqkqXfd+/9AqYanieKd9

Score

10^/10

stealerium stealer

Malware Config

Signatures

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

Processes:

build.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation build.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

13 discord.com
14 discord.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3008 timeout.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

400 taskkill.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

build.exe

pid process

4536 build.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

build.exetaskkill.exe

description pid process

Token: SeDebugPrivilege 4536 build.exe
Token: SeDebugPrivilege 400 taskkill.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	build.exe

flow	ioc
13	discord.com
14	discord.com

pid	process
3008	timeout.exe

pid	process
400	taskkill.exe

pid	process
4536	build.exe

description	pid	process
Token: SeDebugPrivilege	4536	build.exe
Token: SeDebugPrivilege	400	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

build.execmd.exe

description	pid	process	target process
PID 4536 wrote to memory of 2928	4536	build.exe	cmd.exe
PID 4536 wrote to memory of 2928	4536	build.exe	cmd.exe
PID 4536 wrote to memory of 2928	4536	build.exe	cmd.exe
PID 2928 wrote to memory of 4968	2928	cmd.exe	chcp.com
PID 2928 wrote to memory of 4968	2928	cmd.exe	chcp.com
PID 2928 wrote to memory of 4968	2928	cmd.exe	chcp.com
PID 2928 wrote to memory of 400	2928	cmd.exe	taskkill.exe
PID 2928 wrote to memory of 400	2928	cmd.exe	taskkill.exe
PID 2928 wrote to memory of 400	2928	cmd.exe	taskkill.exe
PID 2928 wrote to memory of 3008	2928	cmd.exe	timeout.exe
PID 2928 wrote to memory of 3008	2928	cmd.exe	timeout.exe
PID 2928 wrote to memory of 3008	2928	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\build.exe
"C:\Users\Admin\AppData\Local\Temp\build.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4536

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp5A16.tmp.bat
2⤵
- Suspicious use of WriteProcessMemory
PID:2928

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:4968

C:\Windows\SysWOW64\taskkill.exe
TaskKill /F /IM 4536
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:400

C:\Windows\SysWOW64\timeout.exe
Timeout /T 2 /Nobreak
3⤵
- Delays execution with timeout.exe
PID:3008

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1604

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5A16.tmp.bat
Filesize
57B

MD5
27a6f6845dd6f2b029eb939eefa0e878

SHA1
7ae2be02a80d6ab63b28b0a0791283748745f437

SHA256
f04af442e8ed29a7ea8233eba5483af5adbaf9b20dcf7e1bf28d40ebb3441633

SHA512
cd9ba16485152173006c619b687a8621e2422427c5412c613f92474079499f2bc71e08cb6658e55e32156a202b0bb45ee30b265a7bd192fb6443dc8a953c8919

Download Submit
memory/4536-0-0x00000000749DE000-0x00000000749DF000-memory.dmp

Filesize
4KB

Download
memory/4536-1-0x00000000000A0000-0x0000000000232000-memory.dmp

Filesize
1.6MB

Download
memory/4536-2-0x0000000004BC0000-0x0000000004C26000-memory.dmp

Filesize
408KB

Download
memory/4536-3-0x00000000749D0000-0x0000000075180000-memory.dmp

Filesize
7.7MB

Download
memory/4536-6-0x0000000005160000-0x00000000051F2000-memory.dmp

Filesize
584KB

Download
memory/4536-7-0x00000000051F0000-0x0000000005216000-memory.dmp

Filesize
152KB

Download
memory/4536-8-0x0000000004FD0000-0x0000000004FD8000-memory.dmp

Filesize
32KB

Download
memory/4536-13-0x00000000749D0000-0x0000000075180000-memory.dmp

Filesize
7.7MB

Download