stealerium | fcab46de9f908679cb3d618e2cfb621e62114e5fd58339e112096d9f7e2b0f88

Resubmissions

31/08/2024, 16:29

240831-tzremstfjb10

12/08/2024, 14:11

240812-rhryqsvarm10

Analysis

max time kernel
139s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
31/08/2024, 16:29

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General

Target
build.exe
Size 1.6MB
Sample240831-tzremstfjb
SHA256 45e46fcb41b84552a0d54e1925f2df1ae3883d2645c8d3b4084546943e81f426
MD5 cb367716bd6b45c5b6e95046270cb342
SHA1 e2d15aee96989ee60ddbe618c88b85ec3064b2bd
SHA512 2b7906c154a23e32e990f8824d044059e359c230139a3c68513276200fd40744c02e0531fab2fc9c8ff22baf96920878333d1488d7ce9c0896b67d4377920c6a
SSDEEP 49152:vkTq24GjdGSiqkqXfd+/9AqYanieKdsU:v1EjdGSiqkqXf0FLYW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealerium discovery stealer

Malware Config

Extracted

Family

stealerium

https://discord.com/api/webhooks/1272310044310114345/XovSJwd5sMLQ9WJP_wnPvRrjoRQW3rAHVrVHbTRgEdifmYlfIAmCMdk0VqZcOtuLXiTT

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	build.exe

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

Web Service

T1102

flow	ioc
22	discord.com
23	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	build.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
852	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2920	taskkill.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1676	build.exe
Token: SeDebugPrivilege	2920	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 4444	1676	build.exe	91
PID 1676 wrote to memory of 4444	1676	build.exe	91
PID 1676 wrote to memory of 4444	1676	build.exe	91
PID 4444 wrote to memory of 2856	4444	cmd.exe	93
PID 4444 wrote to memory of 2856	4444	cmd.exe	93
PID 4444 wrote to memory of 2856	4444	cmd.exe	93
PID 4444 wrote to memory of 2920	4444	cmd.exe	94
PID 4444 wrote to memory of 2920	4444	cmd.exe	94
PID 4444 wrote to memory of 2920	4444	cmd.exe	94
PID 4444 wrote to memory of 852	4444	cmd.exe	95
PID 4444 wrote to memory of 852	4444	cmd.exe	95
PID 4444 wrote to memory of 852	4444	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 use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp7DFA.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4444
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2856
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 1676
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2920
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:852

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

tmp7DFA.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp7DFA.tmp.bat
Size 57B
SHA256 b761bb5f828198dd5b5aa4149c01f155a93fed1fd5d226e1cae7595b8d088d64
MD5 175c26e0b3c04ee30b81ad690f3f0e0d
SHA1 05af51c42d7b0c4804d3013ed7e183cbc1a592ff
SHA512 a7c536046b6dd399cd03aad0e6e6c5a8c7795416a19030bfea4e5a7318ce2845be38925a4457b47a1c01acdd4cb5413422f6ea02a9bc4933dd10bcdd507e31e4
MD5 SHA1 SHA512

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memory/1676-0-0x00000000752EE000-0x00000000752EF000-memory.dmp

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memory/1676-1-0x00000000005A0000-0x0000000000732000-memory.dmp

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memory/1676-2-0x00000000050E0000-0x0000000005146000-memory.dmp

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memory/1676-3-0x00000000752E0000-0x0000000075A90000-memory.dmp

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memory/1676-4-0x0000000005540000-0x00000000055D2000-memory.dmp

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memory/1676-5-0x00000000055D0000-0x00000000055F6000-memory.dmp

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memory/1676-6-0x0000000002D60000-0x0000000002D68000-memory.dmp

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memory/1676-9-0x00000000752E0000-0x0000000075A90000-memory.dmp

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Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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