stealc | a95b60573d18671bea63aafbb3f8dad7b94e3a30f51d9dbfaefdb8c96eccb956

Analysis

max time kernel
148s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240214-en
resource tags

arch:x64arch:x86image:win11-20240214-enlocale:en-usos:windows11-21h2-x64system
submitted
27/03/2024, 17:30

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General

Target

a95b60573d18671bea63aafbb3f8dad7b94e3a30f51d9dbfaefdb8c96eccb956.exe
Size

397KB
MD5

36c49ce4084f9ed89e8897d38fac5086
SHA1

1b2ae8d85f8fd6666e8e5d9597f4810f07c809c8
SHA256

a95b60573d18671bea63aafbb3f8dad7b94e3a30f51d9dbfaefdb8c96eccb956
SHA512

60f9e9145556f73af8c9a19841c53441612287cf37d7bd46b7177e432e91974b2c96b9471c65bad4c7bb21ec9c0bb659c120777b1291a2b5783a6bceea54533c
SSDEEP

6144:Kici2Jk2Qs+04iUiCLsMcOTjqXVbeH0g3/ODSLwmpeEI7UJYOd1swUa3R6l:gi2JJv+KUiZMcoSeT3gm9zJYOMwRol

Score

10^/10

stealc discovery spyware stealer upx

Malware Config

Extracted

Family

stealc

http://185.172.128.209

Attributes

url_path
/3cd2b41cbde8fc9c.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file

Executes dropped EXE 4 IoCs

pid	Process
4528	u1q0.0.exe
332	u1q0.0.exe
3664	u1q0.1.exe
4980	JJKEBGHJKF.exe

Loads dropped DLL 2 IoCs

pid	Process
332	u1q0.0.exe
332	u1q0.0.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0003000000025c2c-25.dat	upx
behavioral2/memory/3664-31-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral2/memory/3664-92-0x0000000000400000-0x0000000000930000-memory.dmp	upx

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4528 set thread context of 332	4528	u1q0.0.exe	81

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4216	2232	WerFault.exe	77

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	u1q0.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1q0.0.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2536	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3944	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
332	u1q0.0.exe
332	u1q0.0.exe
332	u1q0.0.exe
332	u1q0.0.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3664	u1q0.1.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 4528	2232	a95b60573d18671bea63aafbb3f8dad7b94e3a30f51d9dbfaefdb8c96eccb956.exe	78
PID 2232 wrote to memory of 4528	2232	a95b60573d18671bea63aafbb3f8dad7b94e3a30f51d9dbfaefdb8c96eccb956.exe	78
PID 2232 wrote to memory of 4528	2232	a95b60573d18671bea63aafbb3f8dad7b94e3a30f51d9dbfaefdb8c96eccb956.exe	78
PID 4528 wrote to memory of 332	4528	u1q0.0.exe	81
PID 4528 wrote to memory of 332	4528	u1q0.0.exe	81
PID 4528 wrote to memory of 332	4528	u1q0.0.exe	81
PID 4528 wrote to memory of 332	4528	u1q0.0.exe	81
PID 4528 wrote to memory of 332	4528	u1q0.0.exe	81
PID 4528 wrote to memory of 332	4528	u1q0.0.exe	81
PID 4528 wrote to memory of 332	4528	u1q0.0.exe	81
PID 4528 wrote to memory of 332	4528	u1q0.0.exe	81
PID 4528 wrote to memory of 332	4528	u1q0.0.exe	81
PID 2232 wrote to memory of 3664	2232	a95b60573d18671bea63aafbb3f8dad7b94e3a30f51d9dbfaefdb8c96eccb956.exe	82
PID 2232 wrote to memory of 3664	2232	a95b60573d18671bea63aafbb3f8dad7b94e3a30f51d9dbfaefdb8c96eccb956.exe	82
PID 2232 wrote to memory of 3664	2232	a95b60573d18671bea63aafbb3f8dad7b94e3a30f51d9dbfaefdb8c96eccb956.exe	82
PID 3664 wrote to memory of 2980	3664	u1q0.1.exe	86
PID 3664 wrote to memory of 2980	3664	u1q0.1.exe	86
PID 3664 wrote to memory of 2980	3664	u1q0.1.exe	86
PID 2980 wrote to memory of 1712	2980	cmd.exe	88
PID 2980 wrote to memory of 1712	2980	cmd.exe	88
PID 2980 wrote to memory of 1712	2980	cmd.exe	88
PID 2980 wrote to memory of 2536	2980	cmd.exe	89
PID 2980 wrote to memory of 2536	2980	cmd.exe	89
PID 2980 wrote to memory of 2536	2980	cmd.exe	89
PID 332 wrote to memory of 4684	332	u1q0.0.exe	90
PID 332 wrote to memory of 4684	332	u1q0.0.exe	90
PID 332 wrote to memory of 4684	332	u1q0.0.exe	90
PID 4684 wrote to memory of 4980	4684	cmd.exe	92
PID 4684 wrote to memory of 4980	4684	cmd.exe	92
PID 4684 wrote to memory of 4980	4684	cmd.exe	92
PID 4980 wrote to memory of 2000	4980	JJKEBGHJKF.exe	93
PID 4980 wrote to memory of 2000	4980	JJKEBGHJKF.exe	93
PID 4980 wrote to memory of 2000	4980	JJKEBGHJKF.exe	93
PID 2000 wrote to memory of 3944	2000	cmd.exe	95
PID 2000 wrote to memory of 3944	2000	cmd.exe	95
PID 2000 wrote to memory of 3944	2000	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\a95b60573d18671bea63aafbb3f8dad7b94e3a30f51d9dbfaefdb8c96eccb956.exe
"C:\Users\Admin\AppData\Local\Temp\a95b60573d18671bea63aafbb3f8dad7b94e3a30f51d9dbfaefdb8c96eccb956.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Users\Admin\AppData\Local\Temp\u1q0.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1q0.0.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4528
- - C:\Users\Admin\AppData\Local\Temp\u1q0.0.exe
    "C:\Users\Admin\AppData\Local\Temp\u1q0.0.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:332
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\JJKEBGHJKF.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4684
    - - C:\Users\Admin\AppData\Local\Temp\JJKEBGHJKF.exe
        
        "C:\Users\Admin\AppData\Local\Temp\JJKEBGHJKF.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of WriteProcessMemory
        
        PID:4980
      - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\JJKEBGHJKF.exe
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:2000
        
        C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        7⤵
        Runs ping.exe
        
        PID:3944
- C:\Users\Admin\AppData\Local\Temp\u1q0.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1q0.1.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3664
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2980
  - - C:\Windows\SysWOW64\chcp.com
      chcp 1251
      4⤵
      PID:1712
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /tn "MalayamaraUpdate" /tr "'C:\Users\Admin\AppData\Local\Temp\Updater.exe'" /sc minute /mo 30 /F
      4⤵
      Creates scheduled task(s)
      PID:2536
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2232 -s 1168
  2⤵
  - Program crash
  PID:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2232 -ip 2232
1⤵
PID:2736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Are.docx

Filesize
11KB

MD5
a33e5b189842c5867f46566bdbf7a095

SHA1
e1c06359f6a76da90d19e8fd95e79c832edb3196

SHA256
5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

SHA512
f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

Download Submit
C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\Users\Admin\AppData\Local\Temp\JJKEBGHJKF.exe

Filesize
106KB

MD5
fe380780b5c35bd6d54541791151c2be

SHA1
7fe3a583cf91474c733f85cebf3c857682e269e1

SHA256
b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

SHA512
ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1q0.0.exe

Filesize
128KB

MD5
cbde922a54807227ceef482690a297c1

SHA1
4c8f0930fdeb8f80c1f18ba3c56002ee9345392f

SHA256
88dbe3590bca82272a797659a8fa3c5df2254d5f1c49991c8dc3dd538c99e01d

SHA512
10a81dc6de91b09860576ca3221c8ea2184c6946bf4199d4ee5d0b412cf8c15afbe514d6e800beeb7bd57fb41080016a6152557f188423909b8d1e3a1d29a469

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1q0.0.exe

Filesize
252KB

MD5
acd6011cb4295e007f9a48622c84c041

SHA1
f3ef79d906d8dd1334c595d592378c6b71ec31b0

SHA256
169e50e0e5bb1323a52dcc3ac8224cb2839b3bd7a68c58101762d1ba92c4d3e5

SHA512
d8d2a41eb1edcde700356c0941e7cc8ccd06dcf41959d6cf72c0c5461ef540bfe5a7dfa7873bf90a532312d5c74ee0edb58c748ec0b232e5195ea182cabab3b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1q0.1.exe

Filesize
1.7MB

MD5
eee5ddcffbed16222cac0a1b4e2e466e

SHA1
28b40c88b8ea50b0782e2bcbb4cc0f411035f3d5

SHA256
2a40e5dccc7526c4982334941c90f95374460e2a816e84e724e98c4d52ae8c54

SHA512
8f88901f3ebd425818db09f268df19ccf8a755603f04e9481bcf02b112a84393f8a900ead77f8f971bfa33fd9fa5636b7494aaee864a0fb04e3273911a4216dc

Download Submit
C:\Users\Admin\AppData\Roaming\Temp\Task.bat

Filesize
128B

MD5
11bb3db51f701d4e42d3287f71a6a43e

SHA1
63a4ee82223be6a62d04bdfe40ef8ba91ae49a86

SHA256
6be22058abfb22b40a42fb003f86b89e204a83024c03eb82cd53e2a0a047c331

SHA512
907ad2c070cc1db89f43459a94d7f48985d939d749c9648b78572a266f0d3fde47813a129e9151dbf4a7d96d36f588172f57c88b8b947b56ed818d7d068abab2

Download Submit
memory/332-36-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/332-134-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/332-20-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/332-124-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/332-108-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/332-19-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/332-13-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/332-85-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2232-2-0x00000000023F0000-0x000000000245E000-memory.dmp

Filesize
440KB

Download
memory/2232-3-0x0000000000400000-0x0000000000568000-memory.dmp

Filesize
1.4MB

Download
memory/2232-1-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/2232-78-0x0000000000400000-0x0000000000568000-memory.dmp

Filesize
1.4MB

Download
memory/3664-32-0x0000000001040000-0x0000000001041000-memory.dmp

Filesize
4KB

Download
memory/3664-111-0x0000000001040000-0x0000000001041000-memory.dmp

Filesize
4KB

Download
memory/3664-31-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/3664-92-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/4528-15-0x00000000007E0000-0x0000000000807000-memory.dmp

Filesize
156KB

Download
memory/4528-14-0x0000000000840000-0x0000000000940000-memory.dmp

Filesize
1024KB

Download
memory/4980-141-0x0000000004F70000-0x0000000004F80000-memory.dmp

Filesize
64KB

Download
memory/4980-140-0x0000000073840000-0x0000000073FF1000-memory.dmp

Filesize
7.7MB

Download
memory/4980-139-0x0000000000550000-0x0000000000570000-memory.dmp

Filesize
128KB

Download
memory/4980-144-0x0000000073840000-0x0000000073FF1000-memory.dmp

Filesize
7.7MB

Download