stealerium | cf799248f39973dd7dafea05204243991d763dddc77959c60c80096532359eff

Resubmissions

03/09/2024, 13:59

240903-ran7waydlq10

03/09/2024, 01:28

240903-bvtp4atajj10

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/09/2024, 01:28

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General

Target
c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
Size 1.6MB
Sample240903-bvtp4atajj
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

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-1-5-21-2718105630-359604950-2820636825-1000\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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
880	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2348	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3156	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3156	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
Token: SeDebugPrivilege	2348	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3156 wrote to memory of 3624	3156	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	90
PID 3156 wrote to memory of 3624	3156	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	90
PID 3156 wrote to memory of 3624	3156	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	90
PID 3624 wrote to memory of 2080	3624	cmd.exe	92
PID 3624 wrote to memory of 2080	3624	cmd.exe	92
PID 3624 wrote to memory of 2080	3624	cmd.exe	92
PID 3624 wrote to memory of 2348	3624	cmd.exe	93
PID 3624 wrote to memory of 2348	3624	cmd.exe	93
PID 3624 wrote to memory of 2348	3624	cmd.exe	93
PID 3624 wrote to memory of 880	3624	cmd.exe	94
PID 3624 wrote to memory of 880	3624	cmd.exe	94
PID 3624 wrote to memory of 880	3624	cmd.exe	94

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:3156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp7F42.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3624
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2080
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 3156
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2348
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:880

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

tmp7F42.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp7F42.tmp.bat
Size 57B
SHA256 5a34bd3970c0eebb7807d327f01f3e9f7a7e05c5110c57e500f8a37b9385c1d5
MD5 aa5a81e3d81c0c54d972cd0e8bbc704c
SHA1 6781c55295a2404d303727270f871f57b8dbd45b
SHA512 5148de56cdc843539cac79a7d9a23a5ff02257c3f13b94e64fc2bb1a4a3638743649e04fce1a71ced7e0fa499598b82b7636653d4804737d5654c3e3cf74708e
MD5 SHA1 SHA512

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memory/3156-0-0x00000000752CE000-0x00000000752CF000-memory.dmp

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memory/3156-1-0x00000000005A0000-0x0000000000732000-memory.dmp

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memory/3156-2-0x0000000004FC0000-0x0000000005026000-memory.dmp

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memory/3156-3-0x00000000752C0000-0x0000000075A70000-memory.dmp

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memory/3156-4-0x0000000005500000-0x0000000005592000-memory.dmp

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memory/3156-5-0x0000000005590000-0x00000000055B6000-memory.dmp

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memory/3156-6-0x00000000055C0000-0x00000000055C8000-memory.dmp

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memory/3156-9-0x00000000752C0000-0x0000000075A70000-memory.dmp

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