stealerium | 5931c1b43c10f231a937ab76246007cb0d1368854b21abef0aeb40aff093452b

General

Target

c7e1b61e71f808d11a419985a63559c0N.exe
Size

1.6MB
MD5

c7e1b61e71f808d11a419985a63559c0
SHA1

9c531ce386ec27cefa3a0c91c2c2927edf0edeff
SHA256

5931c1b43c10f231a937ab76246007cb0d1368854b21abef0aeb40aff093452b
SHA512

2bbe247ba498807bdb9002f4de53278177f195eb2077e288fa489a8bafd18bbfc0770a07d00ba464fc9dbf25c9c54bf00626ec60d39585c391decf8b41a66564
SSDEEP

49152:tcTq24GjdGSiqkqXfd+/9AqYanieKdY5:t9EjdGSiqkqXf0FLYW

Score

10^/10

stealerium discovery stealer

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1273604185342083122/M1_aOzidjVhUItxMcm-OGs70zmvYpA9GMoVkLLwtFwofxMWvvfCNx37gY3Rp5DJIOtEf

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	c7e1b61e71f808d11a419985a63559c0N.exe

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

Web Service

T1102

flow	ioc
24	discord.com
25	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c7e1b61e71f808d11a419985a63559c0N.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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2580	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
456	taskkill.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1108	c7e1b61e71f808d11a419985a63559c0N.exe
1108	c7e1b61e71f808d11a419985a63559c0N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1108	c7e1b61e71f808d11a419985a63559c0N.exe
Token: SeDebugPrivilege	456	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1108 wrote to memory of 4976	1108	c7e1b61e71f808d11a419985a63559c0N.exe	96
PID 1108 wrote to memory of 4976	1108	c7e1b61e71f808d11a419985a63559c0N.exe	96
PID 1108 wrote to memory of 4976	1108	c7e1b61e71f808d11a419985a63559c0N.exe	96
PID 4976 wrote to memory of 3232	4976	cmd.exe	98
PID 4976 wrote to memory of 3232	4976	cmd.exe	98
PID 4976 wrote to memory of 3232	4976	cmd.exe	98
PID 4976 wrote to memory of 456	4976	cmd.exe	99
PID 4976 wrote to memory of 456	4976	cmd.exe	99
PID 4976 wrote to memory of 456	4976	cmd.exe	99
PID 4976 wrote to memory of 2580	4976	cmd.exe	100
PID 4976 wrote to memory of 2580	4976	cmd.exe	100
PID 4976 wrote to memory of 2580	4976	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\c7e1b61e71f808d11a419985a63559c0N.exe
"C:\Users\Admin\AppData\Local\Temp\c7e1b61e71f808d11a419985a63559c0N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp6666.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4976
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3232
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 1108
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:456
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2580

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4404,i,6510295916244954942,10164894160290787457,262144 --variations-seed-version --mojo-platform-channel-handle=4444 /prefetch:8
1⤵
PID:4504

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6666.tmp.bat

Filesize
57B

MD5
aba42da69ad4e45bc411147ccdb8816c

SHA1
c2da03a6b24901c3b218e2c48ca44e9db5d6e9c0

SHA256
b4f7b26167283873fa1717d26a942d756584429712ef4bdeb1c246f1883bbb5c

SHA512
ca0362c17871ffa7e512e8a7bf391d75e29a2794324c5d469152fdd0da3e2629540c5bd133dbce06725048df7f8c56c300c77567006e31db50f5a1838410a470

Download Submit
memory/1108-0-0x000000007507E000-0x000000007507F000-memory.dmp

Filesize
4KB

Download
memory/1108-1-0x0000000000CC0000-0x0000000000E54000-memory.dmp

Filesize
1.6MB

Download
memory/1108-2-0x0000000005810000-0x0000000005876000-memory.dmp

Filesize
408KB

Download
memory/1108-3-0x0000000075070000-0x0000000075820000-memory.dmp

Filesize
7.7MB

Download
memory/1108-6-0x0000000005E70000-0x0000000005F02000-memory.dmp

Filesize
584KB

Download
memory/1108-7-0x0000000005F00000-0x0000000005F26000-memory.dmp

Filesize
152KB

Download
memory/1108-8-0x0000000005F30000-0x0000000005F38000-memory.dmp

Filesize
32KB

Download
memory/1108-13-0x0000000075070000-0x0000000075820000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing