stealerium | f4deeaeaf6a4173c46ef5df50139cd54d144dc0cc0d685b2717c1590cc8b1b1b

General

Target

file.exe
Size

57KB
MD5

8017a1bc98f4fdb536bef45a99951805
SHA1

d0896c713baa2873bda66c77469763c95dad7248
SHA256

f4deeaeaf6a4173c46ef5df50139cd54d144dc0cc0d685b2717c1590cc8b1b1b
SHA512

4a931e8ed6a3d5e547c4925b026d46be660f33b5c427721032df2ca5ad380b3e1abf215355fef911bc148784d4acf71c2e8ac4b729e6c4700cf8a2325a3b2152
SSDEEP

1536:mMA5VMU4wbWW8C5BkbvGoB264yLV6gQOXQz:mMA5VCwbWHkBkbv9gA0gQOXK

Score

10^/10

stealerium xworm execution rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

C2

publisher-misc.gl.at.ply.gg:58207:58207

publisher-misc.gl.at.ply.gg:58207

Attributes

Install_directory
%Temp%
install_file
RuntimeBroker.exe

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2364-1-0x0000000000F20000-0x0000000000F34000-memory.dmp	family_xworm

Stealerium
An open source info stealer written in C# first seen in May 2022.
stealer stealerium
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

2920 powershell.exe
2744 powershell.exe
2680 powershell.exe
2524 powershell.exe

pid	process
2920	powershell.exe
2744	powershell.exe
2680	powershell.exe
2524	powershell.exe

Drops startup file 2 IoCs

Processes:

file.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk	file.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk	file.exe

Executes dropped EXE 1 IoCs

Processes:

lktjyt.exe

pid process

1588 lktjyt.exe
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
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

1992 timeout.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

628 taskkill.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

2920 powershell.exe
2744 powershell.exe
2680 powershell.exe
2524 powershell.exe

pid	process
1588	lktjyt.exe

pid	process
1992	timeout.exe

pid	process
628	taskkill.exe

pid	process
2920	powershell.exe
2744	powershell.exe
2680	powershell.exe
2524	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

file.exepowershell.exepowershell.exepowershell.exepowershell.exelktjyt.exetaskkill.exe

description	pid	process
Token: SeDebugPrivilege	2364	file.exe
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeDebugPrivilege	2744	powershell.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	2524	powershell.exe
Token: SeDebugPrivilege	1588	lktjyt.exe
Token: SeDebugPrivilege	628	taskkill.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

file.exelktjyt.execmd.exe

description	pid	process	target process
PID 2364 wrote to memory of 2920	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 2920	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 2920	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 2744	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 2744	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 2744	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 2680	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 2680	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 2680	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 2524	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 2524	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 2524	2364	file.exe	powershell.exe
PID 2364 wrote to memory of 1588	2364	file.exe	lktjyt.exe
PID 2364 wrote to memory of 1588	2364	file.exe	lktjyt.exe
PID 2364 wrote to memory of 1588	2364	file.exe	lktjyt.exe
PID 2364 wrote to memory of 1588	2364	file.exe	lktjyt.exe
PID 1588 wrote to memory of 1896	1588	lktjyt.exe	cmd.exe
PID 1588 wrote to memory of 1896	1588	lktjyt.exe	cmd.exe
PID 1588 wrote to memory of 1896	1588	lktjyt.exe	cmd.exe
PID 1588 wrote to memory of 1896	1588	lktjyt.exe	cmd.exe
PID 1896 wrote to memory of 1500	1896	cmd.exe	chcp.com
PID 1896 wrote to memory of 1500	1896	cmd.exe	chcp.com
PID 1896 wrote to memory of 1500	1896	cmd.exe	chcp.com
PID 1896 wrote to memory of 1500	1896	cmd.exe	chcp.com
PID 1896 wrote to memory of 628	1896	cmd.exe	taskkill.exe
PID 1896 wrote to memory of 628	1896	cmd.exe	taskkill.exe
PID 1896 wrote to memory of 628	1896	cmd.exe	taskkill.exe
PID 1896 wrote to memory of 628	1896	cmd.exe	taskkill.exe
PID 1896 wrote to memory of 1992	1896	cmd.exe	timeout.exe
PID 1896 wrote to memory of 1992	1896	cmd.exe	timeout.exe
PID 1896 wrote to memory of 1992	1896	cmd.exe	timeout.exe
PID 1896 wrote to memory of 1992	1896	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2364

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\file.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2920

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'file.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2744

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2680

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2524

C:\Users\Admin\AppData\Local\Temp\lktjyt.exe
"C:\Users\Admin\AppData\Local\Temp\lktjyt.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp5E84.tmp.bat
3⤵
- Suspicious use of WriteProcessMemory
PID:1896

C:\Windows\SysWOW64\chcp.com
chcp 65001
4⤵
PID:1500

C:\Windows\SysWOW64\taskkill.exe
TaskKill /F /IM 1588
4⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:628

C:\Windows\SysWOW64\timeout.exe
Timeout /T 2 /Nobreak
4⤵
- Delays execution with timeout.exe
PID:1992

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\lktjyt.exe
Filesize
1.6MB

MD5
6627adf7167ee571e8fd6c8b1a0e8ae3

SHA1
03b9112660ee73c59d84e219f15bf24ae9df48db

SHA256
6c5935bcddaa1d4f809487f66db758e892cc0a7fd7704d138904bc879644ea1f

SHA512
e05896a6e0d09d4dafeb2467395ca06ae1e728a4aa079041dea82940caeb71646984604fdeea482748423b10257b8462db4f573682f9f719939143fdb5691c60

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5E84.tmp.bat
Filesize
57B

MD5
11184bca4ce016b9e00b3ead32c9b16b

SHA1
406adb50b7e2fbf0661a01219adede3680d12aaa

SHA256
dba695fd11bd2141aaec8516df5de78b9fd8b62506fba0154af38f68681c36f0

SHA512
4435aced15e4d51f423e23e7919b13bc39188f48f74ce12e87ea1a7b4dfff12ff3efb832e1d02115548c221553d0a36f0e4b3a14fe71ca2232ca04c16edf0e31

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize
7KB

MD5
609d7a90c687e69f4bdfbd0b3b4fb590

SHA1
a39ba8f17c8116eac74bc5b83434a249df3eff83

SHA256
4713ff7ea6fa9968b3664a42758955b59913e4b92b7dde98ce1d06a1ce7bb002

SHA512
3cfbee6d27527c5998c391f250d6d149643072815e01854c79b0e84e4b6edb32321a8ecb2b88e4b964c9471535141ee310b946b160cf769905b999a239b63883

Download Submit
memory/1588-37-0x00000000011C0000-0x0000000001352000-memory.dmp

Filesize
1.6MB

Download
memory/2364-39-0x000000001D370000-0x000000001D6C0000-memory.dmp

Filesize
3.3MB

Download
memory/2364-30-0x000000001B1D0000-0x000000001B250000-memory.dmp

Filesize
512KB

Download
memory/2364-38-0x0000000000890000-0x000000000089E000-memory.dmp

Filesize
56KB

Download
memory/2364-0-0x000007FEF4CA3000-0x000007FEF4CA4000-memory.dmp

Filesize
4KB

Download
memory/2364-40-0x000007FEF4CA3000-0x000007FEF4CA4000-memory.dmp

Filesize
4KB

Download
memory/2364-1-0x0000000000F20000-0x0000000000F34000-memory.dmp

Filesize
80KB

Download
memory/2364-43-0x000000001B1D0000-0x000000001B250000-memory.dmp

Filesize
512KB

Download
memory/2744-14-0x000000001B6C0000-0x000000001B9A2000-memory.dmp

Filesize
2.9MB

Download
memory/2744-15-0x0000000001D80000-0x0000000001D88000-memory.dmp

Filesize
32KB

Download
memory/2920-8-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2920-7-0x000000001B8E0000-0x000000001BBC2000-memory.dmp

Filesize
2.9MB

Download
memory/2920-6-0x00000000029F0000-0x0000000002A70000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads