stealerium | 18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
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
2664	timeout.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
2572	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1668	Cooperbuild34.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1668	Cooperbuild34.exe
Token: SeDebugPrivilege	2572	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 2752	1668	Cooperbuild34.exe	32
PID 1668 wrote to memory of 2752	1668	Cooperbuild34.exe	32
PID 1668 wrote to memory of 2752	1668	Cooperbuild34.exe	32
PID 2752 wrote to memory of 2652	2752	cmd.exe	34
PID 2752 wrote to memory of 2652	2752	cmd.exe	34
PID 2752 wrote to memory of 2652	2752	cmd.exe	34
PID 2752 wrote to memory of 2572	2752	cmd.exe	35
PID 2752 wrote to memory of 2572	2752	cmd.exe	35
PID 2752 wrote to memory of 2572	2752	cmd.exe	35
PID 2752 wrote to memory of 2664	2752	cmd.exe	36
PID 2752 wrote to memory of 2664	2752	cmd.exe	36
PID 2752 wrote to memory of 2664	2752	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe
"C:\Users\Admin\AppData\Local\Temp\Cooperbuild34.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\0942f001-868f-4bfe-8f05-93bf3587a131.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2752
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2652
- - C:\Windows\system32\taskkill.exe
    taskkill /F /PID 1668
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2572
- - C:\Windows\system32\timeout.exe
    timeout /T 2 /NOBREAK
    3⤵
    - Delays execution with timeout.exe
    PID:2664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\0942f001-868f-4bfe-8f05-93bf3587a131.bat

Filesize
152B

MD5
195b3d5a37375fcb4d1fa0ede1030fb9

SHA1
c57174332c9e5d7da456dc78eb978bfb00a6bcbb

SHA256
38e1cbd9d7cc2d542fde9daf5c3b28bd3b9eb45223ac11b184a2232cfdd0476d

SHA512
d185b33f65ade7f3322b6976b8f61578c142df65646357745e3cad0038b52f8006c3c596a32a4fc0948f3fd76d83b78996f85903547c6869d5b00523f5a431b9

Download Submit
memory/1668-0-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

Filesize
4KB

Download
memory/1668-1-0x0000000000BC0000-0x00000000012CE000-memory.dmp

Filesize
7.1MB

Download
memory/1668-2-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/1668-7-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download