stealerium | cd1a7450a8fdf0fb2ec37063706df6fe2b43977061a4645b439b3897c392c783

Analysis

max time kernel
80s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
03/05/2023, 04:15

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General

Target
virus1.exe
Size 1.6MB
Sample230503-et73wadf43
SHA256 cd1a7450a8fdf0fb2ec37063706df6fe2b43977061a4645b439b3897c392c783
MD5 f81b231542b3920b330a62b781b9c8d2
SHA1 10114c273be842a22b84da646f7c70619b40e3a0
SHA512 0d6ceb8feeecdf034715963bff52c7c4d43250ccee74141e615c271e1e0aaabe29788ea4e1ca57ec458eed7dffec07b8ce0125acf2224293373792832193d71e
SSDEEP 24576:we88i2Q9NXw2/wPOjdGxY2rqkqjVnlqud+/2P+A+ZecdyFoBkkAnexMrdgL5:MTq24GjdGSiqkqXfd+/9AqYanieKd
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealerium stealer

Malware Config

Extracted

Family

stealerium

https://discord.com/api/webhooks/1094420775471169576/jxQtxV_Bl1bMK-9wE5tT-CcGZvhMCx0_SaP7mvCGLnEJ7bSWHVSJsXTEvjQcZTZVpPqZ

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-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	virus1.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
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

evasion

pid	Process
1412	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4800	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4928	virus1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4928	virus1.exe
Token: SeDebugPrivilege	4800	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 4984	4928	virus1.exe	90
PID 4928 wrote to memory of 4984	4928	virus1.exe	90
PID 4928 wrote to memory of 4984	4928	virus1.exe	90
PID 4984 wrote to memory of 4908	4984	cmd.exe	92
PID 4984 wrote to memory of 4908	4984	cmd.exe	92
PID 4984 wrote to memory of 4908	4984	cmd.exe	92
PID 4984 wrote to memory of 4800	4984	cmd.exe	93
PID 4984 wrote to memory of 4800	4984	cmd.exe	93
PID 4984 wrote to memory of 4800	4984	cmd.exe	93
PID 4984 wrote to memory of 1412	4984	cmd.exe	94
PID 4984 wrote to memory of 1412	4984	cmd.exe	94
PID 4984 wrote to memory of 1412	4984	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\virus1.exe
"C:\Users\Admin\AppData\Local\Temp\virus1.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpF012.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4984
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:4908
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 4928
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4800
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:1412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

tmpF012.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF012.tmp.bat
Size 57B
SHA256 577133500c62e0324fd02c6b0b495f8091ebf270f6763310a17a449a9b5a6945
MD5 eef8e6e7c0530c47f161e263075e044e
SHA1 eb30371bee48dc38f9330f21d6b0ff9dde9caae6
SHA512 da11d9d143244eb5c2aa44f7249394aafc23349bd3229de06add953ac0713007ff1d1f45bde79f7913e34205b583205f0d64f1557603f4000eb3fea82c34b95c
MD5 SHA1 SHA512

Submit Download

memory/4928-133-0x00000000000E0000-0x0000000000274000-memory.dmp

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memory/4928-134-0x0000000004CA0000-0x0000000004D06000-memory.dmp

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memory/4928-135-0x0000000004E40000-0x0000000004E50000-memory.dmp

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memory/4928-139-0x0000000004E40000-0x0000000004E50000-memory.dmp

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