stealerium | 210e7db64ff80fa014969eb3705e3b4552ca419968ada35f3940ce979d1e0d00

Analysis

max time kernel
94s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12/09/2024, 08:42

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General

Target
build.exe
Size 1.6MB
Sample240912-kl32vazdkj
SHA256 210e7db64ff80fa014969eb3705e3b4552ca419968ada35f3940ce979d1e0d00
MD5 d68ae12f41cab5625775f03155334c9b
SHA1 1bebf42ac39c0eb1cf4cc60fe5f69c0102dadf90
SHA512 df33322cb9cf4eb927b54f7ce1d1bfe3dc164d3368f52dae0aecee791221824dfb1c580262ff1d5fdbf20b920b709560437b6c193e66791dcd8a0ad5c3b8a0d2
SSDEEP 49152:7kTq24GjdGSiqkqXfd+/9AqYanieKdsn:71EjdGSiqkqXf0FLYW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealerium discovery stealer

Malware Config

Extracted

Family

stealerium

https://discord.com/api/webhooks/1283622190981578844/K30yEdAdRuIKIXwjRibJNrPv8YeY-MquaeyZte1SFFrBxkprI8ktyHemlwHKn1anGJwO

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	build.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
14	discord.com
15	discord.com

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	build.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2712	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1772	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2424	build.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2424	build.exe
Token: SeDebugPrivilege	1772	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 4156	2424	build.exe	91
PID 2424 wrote to memory of 4156	2424	build.exe	91
PID 2424 wrote to memory of 4156	2424	build.exe	91
PID 4156 wrote to memory of 3380	4156	cmd.exe	93
PID 4156 wrote to memory of 3380	4156	cmd.exe	93
PID 4156 wrote to memory of 3380	4156	cmd.exe	93
PID 4156 wrote to memory of 1772	4156	cmd.exe	94
PID 4156 wrote to memory of 1772	4156	cmd.exe	94
PID 4156 wrote to memory of 1772	4156	cmd.exe	94
PID 4156 wrote to memory of 2712	4156	cmd.exe	95
PID 4156 wrote to memory of 2712	4156	cmd.exe	95
PID 4156 wrote to memory of 2712	4156	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\build.exe
"C:\Users\Admin\AppData\Local\Temp\build.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2424
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp8F9D.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4156
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3380
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 2424
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1772
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2712

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

Web Service

T1102

Exfiltration

Impact

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Downloads

tmp8F9D.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp8F9D.tmp.bat
Size 57B
SHA256 6d08b80a9f04f87b94927a9d9fdd6da65f8ccc8c6b5fb87b415d5b2b9d1ca75f
MD5 29efea7b51d2d13f54e7fdaafa65a44c
SHA1 8768ab256b876304d77a1b0bf9a84cb9081ff5a4
SHA512 6e84c0a28b4e868c47f7c8d6aa5a829ee8120f3bac3ed482f813d625c6d5e67707191642d66c02765f2ea5431dde6b4b84a77fe639721bea00115c2774295391
MD5 SHA1 SHA512

Submit Download

memory/2424-0-0x0000000074D0E000-0x0000000074D0F000-memory.dmp

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memory/2424-1-0x0000000000BB0000-0x0000000000D42000-memory.dmp

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memory/2424-2-0x00000000056C0000-0x0000000005726000-memory.dmp

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memory/2424-3-0x0000000074D00000-0x00000000754B0000-memory.dmp

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memory/2424-6-0x0000000005D70000-0x0000000005E02000-memory.dmp

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memory/2424-7-0x0000000005E00000-0x0000000005E26000-memory.dmp

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memory/2424-8-0x00000000057D0000-0x00000000057D8000-memory.dmp

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memory/2424-13-0x0000000074D00000-0x00000000754B0000-memory.dmp

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