stealc | 357f9cdd7228b3ac296ca0f1147cb6f8096f6a1ba424e3c87b676b8eaa1b1cc8

Analysis

max time kernel
145s
max time network
94s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
27/03/2024, 01:17

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General

Target

357f9cdd7228b3ac296ca0f1147cb6f8096f6a1ba424e3c87b676b8eaa1b1cc8.exe
Size

454KB
MD5

0b1ef6acd85a10407854f7a787fa266f
SHA1

3162fb300c4e857bbb749571238e7f4d03564973
SHA256

357f9cdd7228b3ac296ca0f1147cb6f8096f6a1ba424e3c87b676b8eaa1b1cc8
SHA512

de80624a11f704f650eba6ef366a3f08a1d5647b9555ae186daad6f74fa61084e6e855532f624aa947a116184d405c0142d45ffb5b400dd77eafb49104f8d03b
SSDEEP

12288:jAa+baeRDIpYibLudhn4cIwt2yC/glbFZe:0VRgYiOdhn4obflb3e

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 3 IoCs

pid	Process
3900	u14w.0.exe
2220	u14w.1.exe
2252	KECGDBFCBK.exe

Loads dropped DLL 2 IoCs

pid	Process
3900	u14w.0.exe
3900	u14w.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/0x0002000000025c7e-20.dat	upx
behavioral2/memory/2220-26-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral2/memory/2220-87-0x0000000000400000-0x0000000000930000-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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2868	1472	WerFault.exe	77
2792	3900	WerFault.exe	78

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u14w.0.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	u14w.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
1180	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4544	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3900	u14w.0.exe
3900	u14w.0.exe
3900	u14w.0.exe
3900	u14w.0.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2220	u14w.1.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1472 wrote to memory of 3900	1472	357f9cdd7228b3ac296ca0f1147cb6f8096f6a1ba424e3c87b676b8eaa1b1cc8.exe	78
PID 1472 wrote to memory of 3900	1472	357f9cdd7228b3ac296ca0f1147cb6f8096f6a1ba424e3c87b676b8eaa1b1cc8.exe	78
PID 1472 wrote to memory of 3900	1472	357f9cdd7228b3ac296ca0f1147cb6f8096f6a1ba424e3c87b676b8eaa1b1cc8.exe	78
PID 1472 wrote to memory of 2220	1472	357f9cdd7228b3ac296ca0f1147cb6f8096f6a1ba424e3c87b676b8eaa1b1cc8.exe	81
PID 1472 wrote to memory of 2220	1472	357f9cdd7228b3ac296ca0f1147cb6f8096f6a1ba424e3c87b676b8eaa1b1cc8.exe	81
PID 1472 wrote to memory of 2220	1472	357f9cdd7228b3ac296ca0f1147cb6f8096f6a1ba424e3c87b676b8eaa1b1cc8.exe	81
PID 2220 wrote to memory of 3428	2220	u14w.1.exe	85
PID 2220 wrote to memory of 3428	2220	u14w.1.exe	85
PID 2220 wrote to memory of 3428	2220	u14w.1.exe	85
PID 3428 wrote to memory of 3676	3428	cmd.exe	87
PID 3428 wrote to memory of 3676	3428	cmd.exe	87
PID 3428 wrote to memory of 3676	3428	cmd.exe	87
PID 3428 wrote to memory of 1180	3428	cmd.exe	88
PID 3428 wrote to memory of 1180	3428	cmd.exe	88
PID 3428 wrote to memory of 1180	3428	cmd.exe	88
PID 3900 wrote to memory of 1376	3900	u14w.0.exe	89
PID 3900 wrote to memory of 1376	3900	u14w.0.exe	89
PID 3900 wrote to memory of 1376	3900	u14w.0.exe	89
PID 1376 wrote to memory of 2252	1376	cmd.exe	93
PID 1376 wrote to memory of 2252	1376	cmd.exe	93
PID 1376 wrote to memory of 2252	1376	cmd.exe	93
PID 2252 wrote to memory of 1404	2252	KECGDBFCBK.exe	94
PID 2252 wrote to memory of 1404	2252	KECGDBFCBK.exe	94
PID 2252 wrote to memory of 1404	2252	KECGDBFCBK.exe	94
PID 1404 wrote to memory of 4544	1404	cmd.exe	96
PID 1404 wrote to memory of 4544	1404	cmd.exe	96
PID 1404 wrote to memory of 4544	1404	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\357f9cdd7228b3ac296ca0f1147cb6f8096f6a1ba424e3c87b676b8eaa1b1cc8.exe
"C:\Users\Admin\AppData\Local\Temp\357f9cdd7228b3ac296ca0f1147cb6f8096f6a1ba424e3c87b676b8eaa1b1cc8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1472
- C:\Users\Admin\AppData\Local\Temp\u14w.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u14w.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3900
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\KECGDBFCBK.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1376
  - - C:\Users\Admin\AppData\Local\Temp\KECGDBFCBK.exe
      "C:\Users\Admin\AppData\Local\Temp\KECGDBFCBK.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:2252
    - - 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\KECGDBFCBK.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1404
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:4544
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3900 -s 2556
    3⤵
    - Program crash
    PID:2792
- C:\Users\Admin\AppData\Local\Temp\u14w.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u14w.1.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2220
- - 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:3428
  - - C:\Windows\SysWOW64\chcp.com
      chcp 1251
      4⤵
      PID:3676
  - - 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:1180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1472 -s 1532
  2⤵
  - Program crash
  PID:2868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1472 -ip 1472
1⤵
PID:3164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3900 -ip 3900
1⤵
PID:3888

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

Replay Monitor

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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\KECGDBFCBK.exe

Filesize
106KB

MD5
fe380780b5c35bd6d54541791151c2be

SHA1
7fe3a583cf91474c733f85cebf3c857682e269e1

SHA256
b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

SHA512
ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

Download Submit
C:\Users\Admin\AppData\Local\Temp\u14w.0.exe

Filesize
310KB

MD5
e0a5b9bdadb0ba852cc3efd6b6e0cc38

SHA1
8ef0464a27a686ca76bfb907caf04163f65f68fe

SHA256
d14d6b781211f0e119132259d31da661841e91e12137bf021595ee2e3ced3ea1

SHA512
a3319dbeaabcae345984c03d3a8f7bde513519bbb9eab22f85b4ff12a0d2c34ac0655ad4b6284f72735113514e3e19213313afea96a23772ece9aab75f2960e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\u14w.0.exe

Filesize
283KB

MD5
67cd0c5a5c2be67c51bf02fc287a79d1

SHA1
bde1fd0bb82bfac6e20bbe35237dd91dbb27fa32

SHA256
89ba413113960156e445b3f7208f5105bccb2294d48afcd48f8dc09ef496d97d

SHA512
740c1da055c1cfdcf4ee99021fe889fa60153b2d038fd15d8d5ac9335a892c885bc82cca61b244e2e78e258c7bd12408da7303b96a812124c32cdbce7b1f5fd0

Download Submit
C:\Users\Admin\AppData\Local\Temp\u14w.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/1472-2-0x0000000002980000-0x00000000029EE000-memory.dmp

Filesize
440KB

Download
memory/1472-3-0x0000000000400000-0x0000000000B1B000-memory.dmp

Filesize
7.1MB

Download
memory/1472-1-0x0000000000ED0000-0x0000000000FD0000-memory.dmp

Filesize
1024KB

Download
memory/1472-28-0x0000000000400000-0x0000000000B1B000-memory.dmp

Filesize
7.1MB

Download
memory/2220-27-0x0000000002A30000-0x0000000002A31000-memory.dmp

Filesize
4KB

Download
memory/2220-87-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2220-26-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2220-132-0x0000000002A30000-0x0000000002A31000-memory.dmp

Filesize
4KB

Download
memory/2252-123-0x0000000072080000-0x0000000072831000-memory.dmp

Filesize
7.7MB

Download
memory/2252-122-0x00000000002B0000-0x00000000002D0000-memory.dmp

Filesize
128KB

Download
memory/2252-128-0x0000000004C70000-0x0000000004C80000-memory.dmp

Filesize
64KB

Download
memory/2252-130-0x0000000072080000-0x0000000072831000-memory.dmp

Filesize
7.7MB

Download
memory/3900-80-0x0000000000400000-0x0000000000AF7000-memory.dmp

Filesize
7.0MB

Download
memory/3900-121-0x0000000000400000-0x0000000000AF7000-memory.dmp

Filesize
7.0MB

Download
memory/3900-120-0x0000000000D60000-0x0000000000E60000-memory.dmp

Filesize
1024KB

Download
memory/3900-32-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3900-124-0x0000000000400000-0x0000000000AF7000-memory.dmp

Filesize
7.0MB

Download
memory/3900-15-0x0000000000400000-0x0000000000AF7000-memory.dmp

Filesize
7.0MB

Download
memory/3900-14-0x0000000002700000-0x0000000002727000-memory.dmp

Filesize
156KB

Download
memory/3900-13-0x0000000000D60000-0x0000000000E60000-memory.dmp

Filesize
1024KB

Download