stealerium | 90b1c4c43d707e4c08131998ea4446ebfbe2332a345c6bd8a02dbf6a6d727fef

General

Target

8bb47c1c13710fa7bf7855a2334e0320N.exe
Size

1.6MB
MD5

8bb47c1c13710fa7bf7855a2334e0320
SHA1

b74c43890ba61ca9235db411589675de145ec6b3
SHA256

90b1c4c43d707e4c08131998ea4446ebfbe2332a345c6bd8a02dbf6a6d727fef
SHA512

3757c461f06565c667244761037ed6360e16df542ee1d359a0ef11a5c7b7cdf69f204994f9b51b4dd473fb2b8ba532400963f878edd27f0d129ec84b9a0a206c
SSDEEP

49152:1cfTq24GjdGSiqkqXfd+/9AqYanieKdQc:1cOEjdGSiqkqXf0FLYW

Score

10^/10

stealerium discovery stealer

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1280954538882240714/-IAy8AvyNj5gjF0S97ZZ8O6jI_P1ift-VtFcpbDnQUeqUhVvVnGfe0pxykiP_UX3rGEq

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	8bb47c1c13710fa7bf7855a2334e0320N.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
20	discord.com
21	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	8bb47c1c13710fa7bf7855a2334e0320N.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
4856	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4768	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2328	8bb47c1c13710fa7bf7855a2334e0320N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	8bb47c1c13710fa7bf7855a2334e0320N.exe
Token: SeDebugPrivilege	4768	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 212	2328	8bb47c1c13710fa7bf7855a2334e0320N.exe	94
PID 2328 wrote to memory of 212	2328	8bb47c1c13710fa7bf7855a2334e0320N.exe	94
PID 2328 wrote to memory of 212	2328	8bb47c1c13710fa7bf7855a2334e0320N.exe	94
PID 212 wrote to memory of 3528	212	cmd.exe	96
PID 212 wrote to memory of 3528	212	cmd.exe	96
PID 212 wrote to memory of 3528	212	cmd.exe	96
PID 212 wrote to memory of 4768	212	cmd.exe	97
PID 212 wrote to memory of 4768	212	cmd.exe	97
PID 212 wrote to memory of 4768	212	cmd.exe	97
PID 212 wrote to memory of 4856	212	cmd.exe	98
PID 212 wrote to memory of 4856	212	cmd.exe	98
PID 212 wrote to memory of 4856	212	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\8bb47c1c13710fa7bf7855a2334e0320N.exe
"C:\Users\Admin\AppData\Local\Temp\8bb47c1c13710fa7bf7855a2334e0320N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp9E34.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:212
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3528
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 2328
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4768
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4856

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp9E34.tmp.bat

Filesize
57B

MD5
b38d6d71b01fd92767ead666dc5f1f44

SHA1
8aadb1007c6ab0168ef9f6fc131fe87f14c28cb2

SHA256
58d94076d15327e19b884ac8d87762c81b55b8d35edfbcf8dd5b67d3c2551637

SHA512
563fba4a04f0a5739bfebf4177b5f5049da5066527ab1f0625d3b25e333366698bcf27c3d57ab124a4b5d20c4d5f3406b16d500d595e152a25b756e51e48ecde

Download Submit
memory/2328-0-0x0000000074F8E000-0x0000000074F8F000-memory.dmp

Filesize
4KB

Download
memory/2328-1-0x0000000000B70000-0x0000000000D02000-memory.dmp

Filesize
1.6MB

Download
memory/2328-2-0x00000000056C0000-0x0000000005726000-memory.dmp

Filesize
408KB

Download
memory/2328-3-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download
memory/2328-4-0x0000000005C20000-0x0000000005CB2000-memory.dmp

Filesize
584KB

Download
memory/2328-5-0x0000000005CB0000-0x0000000005CD6000-memory.dmp

Filesize
152KB

Download
memory/2328-6-0x0000000005CE0000-0x0000000005CE8000-memory.dmp

Filesize
32KB

Download
memory/2328-9-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download

Analysis

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