stealerium | b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b

General

Target

b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exe
Size

1.6MB
MD5

1250f8db37edf8344bf2d4b85998b319
SHA1

3be39f97dafc08a07805529a7e7986afd9903cf1
SHA256

b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b
SHA512

87cd2478e86d91b640b5265c98b1e7499378768e8c255679b57f34eb2f08525e8435d92b304011ed26a38799739f4eb355bf514b1982dc14dbd5900a0b4dc741
SSDEEP

49152:eLTq24GjdGSiqkqXfd+/9AqYanieKdQH:eiEjdGSiqkqXf0FLYW

Score

10^/10

stealerium stealer

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1236288178802135147/P2iZLzB_oNJFDenlHnHhz96DQUs2xxEf_VjLdUsuQkmmrMTuE9UJ6YfWkmHmfxN_m61i

Signatures

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

Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-1-0x0000000000070000-0x0000000000202000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs

Detects executables manipulated with Fody 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-1-0x0000000000070000-0x0000000000202000-memory.dmp	INDICATOR_EXE_Packed_Fody

Detects executables referencing Discord tokens regular expressions 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-1-0x0000000000070000-0x0000000000202000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Discord_Regex

Detects executables referencing credit card regular expressions 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-1-0x0000000000070000-0x0000000000202000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_CC_Regex

Detects executables referencing many VPN software clients. Observed in infosteslers 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-1-0x0000000000070000-0x0000000000202000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_VPN

Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-1-0x0000000000070000-0x0000000000202000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-1-0x0000000000070000-0x0000000000202000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

Detects executables with interest in wireless interface using netsh 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-1-0x0000000000070000-0x0000000000202000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WirelessNetReccon

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

Web Service
T1102

Processes:

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
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2808 timeout.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

2764 taskkill.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exe

pid process

2360 b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exe

flow	ioc
5	discord.com
4	discord.com

pid	process
2808	timeout.exe

pid	process
2764	taskkill.exe

pid	process
2360	b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exetaskkill.exe

description	pid	process
Token: SeDebugPrivilege	2360	b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exe
Token: SeDebugPrivilege	2764	taskkill.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.execmd.exe

description	pid	process	target process
PID 2360 wrote to memory of 1960	2360	b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exe	cmd.exe
PID 2360 wrote to memory of 1960	2360	b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exe	cmd.exe
PID 2360 wrote to memory of 1960	2360	b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exe	cmd.exe
PID 2360 wrote to memory of 1960	2360	b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exe	cmd.exe
PID 1960 wrote to memory of 2784	1960	cmd.exe	chcp.com
PID 1960 wrote to memory of 2784	1960	cmd.exe	chcp.com
PID 1960 wrote to memory of 2784	1960	cmd.exe	chcp.com
PID 1960 wrote to memory of 2784	1960	cmd.exe	chcp.com
PID 1960 wrote to memory of 2764	1960	cmd.exe	taskkill.exe
PID 1960 wrote to memory of 2764	1960	cmd.exe	taskkill.exe
PID 1960 wrote to memory of 2764	1960	cmd.exe	taskkill.exe
PID 1960 wrote to memory of 2764	1960	cmd.exe	taskkill.exe
PID 1960 wrote to memory of 2808	1960	cmd.exe	timeout.exe
PID 1960 wrote to memory of 2808	1960	cmd.exe	timeout.exe
PID 1960 wrote to memory of 2808	1960	cmd.exe	timeout.exe
PID 1960 wrote to memory of 2808	1960	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exe
"C:\Users\Admin\AppData\Local\Temp\b5690971684484c0c1f3b29f428e631ac18af0b8bf636ea0230a1b7fd082418b.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2360

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp4043.tmp.bat
2⤵
- Suspicious use of WriteProcessMemory
PID:1960

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:2784

C:\Windows\SysWOW64\taskkill.exe
TaskKill /F /IM 2360
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2764

C:\Windows\SysWOW64\timeout.exe
Timeout /T 2 /Nobreak
3⤵
- Delays execution with timeout.exe
PID:2808

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar3FE5.tmp
Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4043.tmp.bat
Filesize
57B

MD5
4223a1770a8fd1376f49e36b9ec70517

SHA1
e0964fa7ff5d9a361e54f95c286659214d752e31

SHA256
b2d07f7e84217a13983723468efa974d15640b4936c501b95d367516c8fa0e5f

SHA512
85adf38e6b77dee40cc332c7ba8eaa3c01ba498d17c2a86b6ed39e4f70bf32c16e88b32027fc90257222521e9d3bc8b94bcd500c1079c62c37d2652eb35d0f41

Download Submit
memory/2360-0-0x000000007455E000-0x000000007455F000-memory.dmp

Filesize
4KB

Download
memory/2360-1-0x0000000000070000-0x0000000000202000-memory.dmp

Filesize
1.6MB

Download
memory/2360-2-0x0000000074550000-0x0000000074C3E000-memory.dmp

Filesize
6.9MB

Download
memory/2360-6-0x0000000002160000-0x00000000021F2000-memory.dmp

Filesize
584KB

Download
memory/2360-7-0x0000000002030000-0x0000000002056000-memory.dmp

Filesize
152KB

Download
memory/2360-8-0x0000000000820000-0x0000000000828000-memory.dmp

Filesize
32KB

Download
memory/2360-50-0x0000000074550000-0x0000000074C3E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads