stealerium | 738bff49a7d0bf56466323ca5738e97829123984ed5097edbcef7bea308fdcd8

Analysis

max time kernel
93s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27-09-2024 21:44

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General

Target

stub.exe
Size

3.6MB
MD5

692985c7b0ff2fef9bdc934a6e07a368
SHA1

81aba4700e54284587048bb29a2f2810ff0ed68c
SHA256

738bff49a7d0bf56466323ca5738e97829123984ed5097edbcef7bea308fdcd8
SHA512

e96fda010c8df7434b0df93764ef41cffd8e922491719440e79fdcd3649530f48a6128bf06d4096ca0e744803726f9fe198aac0e9a992ba406d9aa3ff7adb660
SSDEEP

98304:AEjdGSi3kqXf0FLYWCLbi6sfLxkuahjCOeX9YG9see5GnRyCAm0makxH13:S3kSILYWqZAkuujCPX9YG9he5GnQCAJS

Score

10^/10

stealerium discovery 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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	stub.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	stub.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3340	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2208	taskkill.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1276	stub.exe
Token: SeDebugPrivilege	2208	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 3984	1276	stub.exe	83
PID 1276 wrote to memory of 3984	1276	stub.exe	83
PID 1276 wrote to memory of 3984	1276	stub.exe	83
PID 3984 wrote to memory of 5016	3984	cmd.exe	85
PID 3984 wrote to memory of 5016	3984	cmd.exe	85
PID 3984 wrote to memory of 5016	3984	cmd.exe	85
PID 3984 wrote to memory of 2208	3984	cmd.exe	86
PID 3984 wrote to memory of 2208	3984	cmd.exe	86
PID 3984 wrote to memory of 2208	3984	cmd.exe	86
PID 3984 wrote to memory of 3340	3984	cmd.exe	87
PID 3984 wrote to memory of 3340	3984	cmd.exe	87
PID 3984 wrote to memory of 3340	3984	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\stub.exe
"C:\Users\Admin\AppData\Local\Temp\stub.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1276
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp952B.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3984
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5016
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 1276
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2208
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp952B.tmp.bat

Filesize
57B

MD5
5cc97289bf87aa28c4312a78977701a1

SHA1
db8baa7b28199b16a4c5a07c102998fa13251759

SHA256
5017872a576a4e9feae0bbad4580892c1af8ac9a0b06c4bf23f70f0ccc247f1b

SHA512
0fe0f9563b073524ecf7baf242bfa724a6f26f1b56b1c7d455b5a66cda14c76130818ca7c545cd38c5006669ff801a732fc0f4200be37afb19cb6661d6dc1986

Download Submit
memory/1276-0-0x000000007528E000-0x000000007528F000-memory.dmp

Filesize
4KB

Download
memory/1276-1-0x0000000000870000-0x0000000000C14000-memory.dmp

Filesize
3.6MB

Download
memory/1276-2-0x0000000005460000-0x00000000054C6000-memory.dmp

Filesize
408KB

Download
memory/1276-3-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/1276-6-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download