stealerium | 18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992

Analysis

max time kernel
103s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
19/03/2025, 13:19

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General

Target

Cooperbuild34.exe
Size

7.0MB
MD5

556555f19852e8685dc8d465ef09b815
SHA1

3e1e81c632d97922df7b23ca6f4d1c2eaab303ea
SHA256

18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992
SHA512

0e8e7e3829651c49b518adb2d8e85821bc721412376988d7ec441e40711bf016077e32a31f9e5f82ae55d40a08b5a1f5429906b00c751afd8a961e9a83b702bd
SSDEEP

196608:bMbuV25DeTD+oqzukSIlLtIY79n8SI75bWAXAkuujCPX9YG9he5GnQCAJKNc:8A403qakSoR7tfI7ZtXADu8X9Y95GQLJ

Score

10^/10

stealerium stealer

Malware Config

Extracted

Family

stealerium

https://api.telegram.org/bot1616004787:AAH60oNqVa82nffKp0gB2yn5A_jmiTy0_XY/sendMessage?chat_id=

Signatures

Stealerium
An open source info stealer written in C# first seen in May 2022.
stealer stealerium
Stealerium family
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-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation	Cooperbuild34.exe

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

defense_evasion

pid	Process
2816	timeout.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
4100	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4372	Cooperbuild34.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4372	Cooperbuild34.exe
Token: SeDebugPrivilege	4100	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4372 wrote to memory of 764	4372	Cooperbuild34.exe	89
PID 4372 wrote to memory of 764	4372	Cooperbuild34.exe	89
PID 764 wrote to memory of 208	764	cmd.exe	91
PID 764 wrote to memory of 208	764	cmd.exe	91
PID 764 wrote to memory of 4100	764	cmd.exe	92
PID 764 wrote to memory of 4100	764	cmd.exe	92
PID 764 wrote to memory of 2816	764	cmd.exe	93
PID 764 wrote to memory of 2816	764	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe
"C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4372
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\e3d0bdf8-c626-406c-8d93-c21ea4ef4bf3.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:764
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:208
- - C:\Windows\system32\taskkill.exe
    taskkill /F /PID 4372
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4100
- - C:\Windows\system32\timeout.exe
    timeout /T 2 /NOBREAK
    3⤵
    - Delays execution with timeout.exe
    PID:2816

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\e3d0bdf8-c626-406c-8d93-c21ea4ef4bf3.bat

Filesize
152B

MD5
b9fe333a3923d09bcc502f08edec936e

SHA1
d260213d73ad12573b4f60ac79fdd506dd99a6ae

SHA256
bbdfdfd6f277e18e73fd9026917ca535fe53fd6f842b1c82fcf764eb9127f7a6

SHA512
b370057cb0726be9260d9605b191bb558dacbbf289be68cbfac8bdcd68c4efb2e40d5f455e4c83f4eb9ea30e5a0326052a658466c4543a6b87813386596a5908

Download Submit
memory/4372-0-0x00007FFF4DC63000-0x00007FFF4DC65000-memory.dmp

Filesize
8KB

Download
memory/4372-1-0x000001AAABE20000-0x000001AAAC52E000-memory.dmp

Filesize
7.1MB

Download
memory/4372-2-0x00007FFF4DC60000-0x00007FFF4E721000-memory.dmp

Filesize
10.8MB

Download
memory/4372-7-0x00007FFF4DC60000-0x00007FFF4E721000-memory.dmp

Filesize
10.8MB

Download