stealerium | 1d0a104ed7ac079e1d15b29288eab5c9fdd6691817b37ed7fff8af14c378b9d4

Analysis

max time kernel
125s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
04-05-2024 16:11

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General

Target

build.exe
Size

1.6MB
MD5

e7b2f3e0b794bf5fa93620cf7d0493f3
SHA1

841a92af5c5c71a27379ad1e9acd426d0c4739b4
SHA256

1d0a104ed7ac079e1d15b29288eab5c9fdd6691817b37ed7fff8af14c378b9d4
SHA512

1d96b921857c559071a8a4fb19780126b594f85cd3464d1d8755d0bafc30d8e8baed6dd22446ffa92d9edcea932724931336598aa8d13c1f9cf1648ced796c3a
SSDEEP

24576:zi2Q9NXw2/wPOjdGxY2rqkqjVnlqud+/2P+A+ZecdyFoBkkAnexMrdgL4L:2Tq24GjdGSiqkqXfd+/9AqYanieKd

Score

10^/10

stealerium stealer

Malware Config

Extracted

Family

stealerium

bc1qea9m68q0zex4gpp8wgpaswg6hd03skjlap4j74

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

Processes:

build.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation build.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

23 discord.com
24 discord.com
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

Processes:

timeout.exe

pid process

1456 timeout.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

4456 taskkill.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

build.exe

pid process

396 build.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

build.exetaskkill.exe

description pid process

Token: SeDebugPrivilege 396 build.exe
Token: SeDebugPrivilege 4456 taskkill.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	build.exe

flow	ioc
23	discord.com
24	discord.com

pid	process
1456	timeout.exe

pid	process
4456	taskkill.exe

pid	process
396	build.exe

description	pid	process
Token: SeDebugPrivilege	396	build.exe
Token: SeDebugPrivilege	4456	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

build.execmd.exe

description	pid	process	target process
PID 396 wrote to memory of 3256	396	build.exe	cmd.exe
PID 396 wrote to memory of 3256	396	build.exe	cmd.exe
PID 396 wrote to memory of 3256	396	build.exe	cmd.exe
PID 3256 wrote to memory of 4228	3256	cmd.exe	chcp.com
PID 3256 wrote to memory of 4228	3256	cmd.exe	chcp.com
PID 3256 wrote to memory of 4228	3256	cmd.exe	chcp.com
PID 3256 wrote to memory of 4456	3256	cmd.exe	taskkill.exe
PID 3256 wrote to memory of 4456	3256	cmd.exe	taskkill.exe
PID 3256 wrote to memory of 4456	3256	cmd.exe	taskkill.exe
PID 3256 wrote to memory of 1456	3256	cmd.exe	timeout.exe
PID 3256 wrote to memory of 1456	3256	cmd.exe	timeout.exe
PID 3256 wrote to memory of 1456	3256	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\build.exe
"C:\Users\Admin\AppData\Local\Temp\build.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:396

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp6040.tmp.bat
2⤵
- Suspicious use of WriteProcessMemory
PID:3256

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:4228

C:\Windows\SysWOW64\taskkill.exe
TaskKill /F /IM 396
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4456

C:\Windows\SysWOW64\timeout.exe
Timeout /T 2 /Nobreak
3⤵
- Delays execution with timeout.exe
PID:1456

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6040.tmp.bat
Filesize
56B

MD5
9ff71c9e0971c54ad2be7ffc4a55ae0e

SHA1
9feeec91d12541a041d7c5745f4e567cef31c3ef

SHA256
6741dd14ecdedbcc4da21d9c867a1dbc5ebdb7863039948de628f565103763ce

SHA512
549a93f70d12d9f1248bc203ba4b50d5a59b44310e401aef7742cdbe25b71de94c24b73d0e874c567fde7d01af49c564ddccdbbb47a502c093758f7031fc2f48

Download Submit
memory/396-0-0x00000000751AE000-0x00000000751AF000-memory.dmp

Filesize
4KB

Download
memory/396-1-0x0000000000950000-0x0000000000AE6000-memory.dmp

Filesize
1.6MB

Download
memory/396-2-0x0000000005360000-0x00000000053C6000-memory.dmp

Filesize
408KB

Download
memory/396-3-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/396-6-0x00000000059A0000-0x0000000005A32000-memory.dmp

Filesize
584KB

Download
memory/396-7-0x0000000005A30000-0x0000000005A56000-memory.dmp

Filesize
152KB

Download
memory/396-8-0x0000000005A80000-0x0000000005A88000-memory.dmp

Filesize
32KB

Download
memory/396-13-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download