stealerium | 18ba00b3a2ce55339ad848455df7fd708da30bbc7fe5df880a1affe11a548bc8

Analysis

max time kernel
13s
max time network
19s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
04-05-2024 16:17

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General

Target

stub.exe
Size

1.6MB
MD5

af79dfc8146768215e0bf4b450c8599f
SHA1

6377cb6ee690201f0f52e226c00430253a66594b
SHA256

18ba00b3a2ce55339ad848455df7fd708da30bbc7fe5df880a1affe11a548bc8
SHA512

cc2f53a492e10f0386459cb74bb0938421e62a2b6ccfb0a01be9bc60da0ed45f27a0e1572eeb8ef68885c741577b514e8642f81643513c13e1d0317aa860db4f
SSDEEP

24576:gdi2Q9NXw2/wPOjdGxY2rqkqjVnlqud+/2P+A+ZecdyFoBkkAnexMrdgLaA:gUTq24GjdGSiqkqXfd+/9AqYanieKd

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:

stub.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation stub.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

25 discord.com
26 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

4148 timeout.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

2772 taskkill.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

stub.exe

pid process

316 stub.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

stub.exetaskkill.exe

description pid process

Token: SeDebugPrivilege 316 stub.exe
Token: SeDebugPrivilege 2772 taskkill.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	stub.exe

flow	ioc
25	discord.com
26	discord.com

pid	process
4148	timeout.exe

pid	process
2772	taskkill.exe

pid	process
316	stub.exe

description	pid	process
Token: SeDebugPrivilege	316	stub.exe
Token: SeDebugPrivilege	2772	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

stub.execmd.exe

description	pid	process	target process
PID 316 wrote to memory of 3312	316	stub.exe	cmd.exe
PID 316 wrote to memory of 3312	316	stub.exe	cmd.exe
PID 316 wrote to memory of 3312	316	stub.exe	cmd.exe
PID 3312 wrote to memory of 2616	3312	cmd.exe	chcp.com
PID 3312 wrote to memory of 2616	3312	cmd.exe	chcp.com
PID 3312 wrote to memory of 2616	3312	cmd.exe	chcp.com
PID 3312 wrote to memory of 2772	3312	cmd.exe	taskkill.exe
PID 3312 wrote to memory of 2772	3312	cmd.exe	taskkill.exe
PID 3312 wrote to memory of 2772	3312	cmd.exe	taskkill.exe
PID 3312 wrote to memory of 4148	3312	cmd.exe	timeout.exe
PID 3312 wrote to memory of 4148	3312	cmd.exe	timeout.exe
PID 3312 wrote to memory of 4148	3312	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\stub.exe
"C:\Users\Admin\AppData\Local\Temp\stub.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:316

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp5D24.tmp.bat
2⤵
- Suspicious use of WriteProcessMemory
PID:3312

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:2616

C:\Windows\SysWOW64\taskkill.exe
TaskKill /F /IM 316
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2772

C:\Windows\SysWOW64\timeout.exe
Timeout /T 2 /Nobreak
3⤵
- Delays execution with timeout.exe
PID:4148

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\tmp5D24.tmp.bat
Filesize
56B

MD5
2b82064348986191a88e345965ac2e99

SHA1
2d533ee8d09c7850d7a949680232f75579158e64

SHA256
b1c6c3605852433062e0c2361bc309af6fa2ef1441f8d304931d01f3ae28b409

SHA512
e8f75f8a821a75aea29406fdc48d705e5e200fe96a40e73284d4eb5915ad5c9dd96af29af49500dc8e9c18b0e920f2f754cf0ad4a5addc48e607c05d6824d4c4

Download Submit
memory/316-0-0x000000007488E000-0x000000007488F000-memory.dmp

Filesize
4KB

Download
memory/316-1-0x00000000007C0000-0x0000000000956000-memory.dmp

Filesize
1.6MB

Download
memory/316-2-0x00000000052F0000-0x0000000005356000-memory.dmp

Filesize
408KB

Download
memory/316-3-0x0000000074880000-0x0000000075030000-memory.dmp

Filesize
7.7MB

Download
memory/316-6-0x0000000005950000-0x00000000059E2000-memory.dmp

Filesize
584KB

Download
memory/316-7-0x00000000059E0000-0x0000000005A06000-memory.dmp

Filesize
152KB

Download
memory/316-8-0x0000000005A30000-0x0000000005A38000-memory.dmp

Filesize
32KB

Download
memory/316-13-0x0000000074880000-0x0000000075030000-memory.dmp

Filesize
7.7MB

Download