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

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

Web Service

T1102

flow	ioc
5	discord.com
4	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2168	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2160	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2896	c7e1b61e71f808d11a419985a63559c0N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2896	c7e1b61e71f808d11a419985a63559c0N.exe
Token: SeDebugPrivilege	2160	taskkill.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 580	2896	c7e1b61e71f808d11a419985a63559c0N.exe	31
PID 2896 wrote to memory of 580	2896	c7e1b61e71f808d11a419985a63559c0N.exe	31
PID 2896 wrote to memory of 580	2896	c7e1b61e71f808d11a419985a63559c0N.exe	31
PID 2896 wrote to memory of 580	2896	c7e1b61e71f808d11a419985a63559c0N.exe	31
PID 580 wrote to memory of 1608	580	cmd.exe	33
PID 580 wrote to memory of 1608	580	cmd.exe	33
PID 580 wrote to memory of 1608	580	cmd.exe	33
PID 580 wrote to memory of 1608	580	cmd.exe	33
PID 580 wrote to memory of 2160	580	cmd.exe	34
PID 580 wrote to memory of 2160	580	cmd.exe	34
PID 580 wrote to memory of 2160	580	cmd.exe	34
PID 580 wrote to memory of 2160	580	cmd.exe	34
PID 580 wrote to memory of 2168	580	cmd.exe	35
PID 580 wrote to memory of 2168	580	cmd.exe	35
PID 580 wrote to memory of 2168	580	cmd.exe	35
PID 580 wrote to memory of 2168	580	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\c7e1b61e71f808d11a419985a63559c0N.exe
"C:\Users\Admin\AppData\Local\Temp\c7e1b61e71f808d11a419985a63559c0N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp8741.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:580
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1608
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 2896
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2160
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2168

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\Cab8632.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar8645.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8741.tmp.bat

Filesize
57B

MD5
ca4d4fd08d3a389871c6de21812bb31e

SHA1
937aaf40fb7e9f6009cd9fd8dcaf83d534b5cade

SHA256
68cf5c643851e8f7ff4c643994d175ed56ba54f4c58091d326a66dc28bac77cb

SHA512
6b3a23a6722c4103ca972898c0f567eb2450064c66c31d52d2b9c374b06dd387ef9aeab782b8c73968c36191c31da8d0403edd55ef0cd303427bc0a374384b95

Download Submit
memory/2896-0-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download
memory/2896-1-0x0000000000AB0000-0x0000000000C44000-memory.dmp

Filesize
1.6MB

Download
memory/2896-2-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2896-5-0x0000000004C00000-0x0000000004C92000-memory.dmp

Filesize
584KB

Download
memory/2896-6-0x0000000000430000-0x0000000000456000-memory.dmp

Filesize
152KB

Download
memory/2896-7-0x00000000003E0000-0x00000000003E8000-memory.dmp

Filesize
32KB

Download
memory/2896-46-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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