stealerium | cf799248f39973dd7dafea05204243991d763dddc77959c60c80096532359eff

General

Target
c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
Size 1.6MB
Sample240903-wph2masfmr
SHA256 c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa
MD5 96c62ca985ed966d7c6d274caa5bb41a
SHA1 97842b7b0d381ae027f8a92787ffff84eca2a698
SHA512 66e086fdd0f39f0f166c3d9253805de4095e95b47eee38393a113e2279d4f90c13c8584f3827f45c85b2bca71a9119a48dca6f59d006d4015e9c2f6dafedcde5
SSDEEP 49152:LkTq24GjdGSiqkqXfd+/9AqYanieKdsG:L1EjdGSiqkqXf0FLYW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealerium discovery stealer

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1216977598710812722/eEJiGM8jVlIOF9WMbphPIuNdIEZhhSSu4T_LZSo0WE_S2YnMqS8z5lz1bmAKfC9V08aI

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.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	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.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
1308	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1596	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3504	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3504	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
Token: SeDebugPrivilege	1596	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3504 wrote to memory of 760	3504	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	92
PID 3504 wrote to memory of 760	3504	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	92
PID 3504 wrote to memory of 760	3504	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	92
PID 760 wrote to memory of 5084	760	cmd.exe	94
PID 760 wrote to memory of 5084	760	cmd.exe	94
PID 760 wrote to memory of 5084	760	cmd.exe	94
PID 760 wrote to memory of 1596	760	cmd.exe	95
PID 760 wrote to memory of 1596	760	cmd.exe	95
PID 760 wrote to memory of 1596	760	cmd.exe	95
PID 760 wrote to memory of 1308	760	cmd.exe	96
PID 760 wrote to memory of 1308	760	cmd.exe	96
PID 760 wrote to memory of 1308	760	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
"C:\Users\Admin\AppData\Local\Temp\c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpA539.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:760
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5084
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 3504
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1596
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

tmpA539.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpA539.tmp.bat
Size 57B
SHA256 0ba8d8702b4e0e0cad058516ec7f171d15a3ebcf31e8e99effb4789a95a55692
MD5 06fc0722436d0280d329587eb1fd43cb
SHA1 01c73772ca007bedbaa8388c3a45c94fb0e81d74
SHA512 6f0a5281494789b30fcf291f5c6e9488edcf4b7b8574835bc06eae843efacb98755d3e31a9cff696f139cab04002b718c7bf84294e68cf6e94fca07c6010f467
MD5 SHA1 SHA512

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memory/3504-0-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

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memory/3504-1-0x0000000000F60000-0x00000000010F2000-memory.dmp

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memory/3504-2-0x0000000005AA0000-0x0000000005B06000-memory.dmp

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memory/3504-3-0x0000000074A80000-0x0000000075230000-memory.dmp

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memory/3504-4-0x0000000006010000-0x00000000060A2000-memory.dmp

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memory/3504-5-0x00000000060A0000-0x00000000060C6000-memory.dmp

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memory/3504-6-0x00000000060D0000-0x00000000060D8000-memory.dmp

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memory/3504-9-0x0000000074A80000-0x0000000075230000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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