stealc | 7346830995d79cf8e952b5d03120959cbf80f4227a3eed9f100a4dca88697754

Analysis

max time kernel
142s
max time network
150s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
07/04/2024, 22:30

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General

Target
55c11e10adbfc2c18a1d7211e31edc4d.exe
Size 454KB
Sample240407-2esqzagf47
SHA256 7346830995d79cf8e952b5d03120959cbf80f4227a3eed9f100a4dca88697754
MD5 55c11e10adbfc2c18a1d7211e31edc4d
SHA1 80f1e6d691f3ec96a3f506b276dc12c9ec9bb7a3
SHA512 078fdd9a75920abc674826669178db7d4b1eb60081de5d153d850208539e3527969e1722267c3606463da5465fa1830c1efe4307bcef8ecdf94869a086f7462d
SSDEEP 6144:+pin8J11lQFGDhTjpjpg50uNZRvqj4PYz9c5SfZmdZX+I0f2F5hpZUI66/Qk:Ii8J11lQFG1Hp+PHqj4Qmi2xXY8hP94k
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc discovery spyware stealer

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
2744	u1bg.0.exe
776	u1bg.1.exe
412	AEGDBAFHJJ.exe

Loads dropped DLL 11 IoCs

pid	Process
1708	55c11e10adbfc2c18a1d7211e31edc4d.exe
1708	55c11e10adbfc2c18a1d7211e31edc4d.exe
1708	55c11e10adbfc2c18a1d7211e31edc4d.exe
1708	55c11e10adbfc2c18a1d7211e31edc4d.exe
1708	55c11e10adbfc2c18a1d7211e31edc4d.exe
1708	55c11e10adbfc2c18a1d7211e31edc4d.exe
1708	55c11e10adbfc2c18a1d7211e31edc4d.exe
1708	55c11e10adbfc2c18a1d7211e31edc4d.exe
2744	u1bg.0.exe
2744	u1bg.0.exe
2236	cmd.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
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

Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1bg.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1bg.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1bg.1.exe

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	u1bg.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1bg.0.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2144	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2744	u1bg.0.exe
2744	u1bg.0.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
776	u1bg.1.exe
776	u1bg.1.exe
776	u1bg.1.exe
776	u1bg.1.exe
776	u1bg.1.exe
776	u1bg.1.exe
776	u1bg.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
776	u1bg.1.exe
776	u1bg.1.exe
776	u1bg.1.exe
776	u1bg.1.exe
776	u1bg.1.exe
776	u1bg.1.exe
776	u1bg.1.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 2744	1708	55c11e10adbfc2c18a1d7211e31edc4d.exe	28
PID 1708 wrote to memory of 2744	1708	55c11e10adbfc2c18a1d7211e31edc4d.exe	28
PID 1708 wrote to memory of 2744	1708	55c11e10adbfc2c18a1d7211e31edc4d.exe	28
PID 1708 wrote to memory of 2744	1708	55c11e10adbfc2c18a1d7211e31edc4d.exe	28
PID 1708 wrote to memory of 776	1708	55c11e10adbfc2c18a1d7211e31edc4d.exe	31
PID 1708 wrote to memory of 776	1708	55c11e10adbfc2c18a1d7211e31edc4d.exe	31
PID 1708 wrote to memory of 776	1708	55c11e10adbfc2c18a1d7211e31edc4d.exe	31
PID 1708 wrote to memory of 776	1708	55c11e10adbfc2c18a1d7211e31edc4d.exe	31
PID 2744 wrote to memory of 2236	2744	u1bg.0.exe	34
PID 2744 wrote to memory of 2236	2744	u1bg.0.exe	34
PID 2744 wrote to memory of 2236	2744	u1bg.0.exe	34
PID 2744 wrote to memory of 2236	2744	u1bg.0.exe	34
PID 2744 wrote to memory of 1868	2744	u1bg.0.exe	35
PID 2744 wrote to memory of 1868	2744	u1bg.0.exe	35
PID 2744 wrote to memory of 1868	2744	u1bg.0.exe	35
PID 2744 wrote to memory of 1868	2744	u1bg.0.exe	35
PID 2236 wrote to memory of 412	2236	cmd.exe	38
PID 2236 wrote to memory of 412	2236	cmd.exe	38
PID 2236 wrote to memory of 412	2236	cmd.exe	38
PID 2236 wrote to memory of 412	2236	cmd.exe	38
PID 412 wrote to memory of 2888	412	AEGDBAFHJJ.exe	39
PID 412 wrote to memory of 2888	412	AEGDBAFHJJ.exe	39
PID 412 wrote to memory of 2888	412	AEGDBAFHJJ.exe	39
PID 412 wrote to memory of 2888	412	AEGDBAFHJJ.exe	39
PID 2888 wrote to memory of 2144	2888	cmd.exe	41
PID 2888 wrote to memory of 2144	2888	cmd.exe	41
PID 2888 wrote to memory of 2144	2888	cmd.exe	41
PID 2888 wrote to memory of 2144	2888	cmd.exe	41

C:\Users\Admin\AppData\Local\Temp\55c11e10adbfc2c18a1d7211e31edc4d.exe
"C:\Users\Admin\AppData\Local\Temp\55c11e10adbfc2c18a1d7211e31edc4d.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Users\Admin\AppData\Local\Temp\u1bg.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1bg.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2744
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\AEGDBAFHJJ.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2236
  - - C:\Users\Admin\AppData\Local\Temp\AEGDBAFHJJ.exe
      "C:\Users\Admin\AppData\Local\Temp\AEGDBAFHJJ.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:412
    - - 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\AEGDBAFHJJ.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2888
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:2144
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\KJDGIJECFI.exe"
    3⤵
    PID:1868
- C:\Users\Admin\AppData\Local\Temp\u1bg.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1bg.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

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

AEGDBAFHJJ.exe

Path C:\Users\Admin\AppData\Local\Temp\AEGDBAFHJJ.exe
Size 106KB
SHA256 b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53
MD5 fe380780b5c35bd6d54541791151c2be
SHA1 7fe3a583cf91474c733f85cebf3c857682e269e1
SHA512 ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c
SSDEEP 1536:lIpbrxKOcuS11Phbiyn2TCdfGyJVGJkyrt517EwM+UPpe5xKOcuS11Phbiyn2TCf:KpbrsISnRGPJkGt74GsISnRF
MD5 SHA1 SHA512 SSDEEP

Submit Download

mozglue.dll

Path \ProgramData\mozglue.dll
Size 593KB
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
SSDEEP 12288:BlSyAom/gcRKMdRm4wFkRHuyG4RRGJVDjMk/x21R8gY/r:BKgcRKMdRm4wFkVVDGJVv//x21R8br
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path \ProgramData\nss3.dll
Size 2.0MB
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
SSDEEP 49152:fECf12gikHlnKGxJRIB+y5nvxnaOSJ3HFNWYrVvE4CQsgzMmQfTU1NrWmy4KoAzh:J7Tf8J1Q+SS5/nr
MD5 SHA1 SHA512 SSDEEP

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u1bg.0.exe

Path \Users\Admin\AppData\Local\Temp\u1bg.0.exe
Size 309KB
SHA256 6fc36b8c227db7dd12779478f486f6e73bc4c66333a66bc8ece2053a3d0574db
MD5 f2b7659371eecb4d8b7c08506eb9c9fd
SHA1 1bf4395884a5abe31ea417c2c09c6fcf006e4c14
SHA512 54d0ca489284019dd212815cb541c0bd644f918e1a02184971f73c323c441977c7651a1090efe9c4f2566ab6c665fbd267d56f73af6028e9c694dac793cc6eda
SSDEEP 3072:tome7yZT4cJ8k9yj9FpLS+ew4xHMQNAMjJ9KqsCl6t5OnocCeU02oO:tzOAT4cOhjBLSptLZJsqxl6vOndP
MD5 SHA1 SHA512 SSDEEP

Submit Download

u1bg.1.exe

Path \Users\Admin\AppData\Local\Temp\u1bg.1.exe
Size 4.6MB
SHA256 4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7
MD5 397926927bca55be4a77839b1c44de6e
SHA1 e10f3434ef3021c399dbba047832f02b3c898dbd
SHA512 cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954
SSDEEP 49152:1ZRCckM8wwGbtBiRFWSGqCW4FL5wslsAEL1ksS2NHsF3TjZ1I6bqmHC0Jg:1ZRCwrb64XwWsAwFaFXxg
MD5 SHA1 SHA512 SSDEEP

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memory/412-191-0x0000000072CB0000-0x000000007339E000-memory.dmp

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memory/412-189-0x0000000004D00000-0x0000000004D40000-memory.dmp

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memory/412-183-0x0000000072CB0000-0x000000007339E000-memory.dmp

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memory/412-177-0x0000000000890000-0x00000000008B0000-memory.dmp

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memory/776-92-0x0000000000230000-0x0000000000231000-memory.dmp

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memory/776-142-0x0000000000400000-0x00000000008AD000-memory.dmp

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memory/776-196-0x0000000000400000-0x00000000008AD000-memory.dmp

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memory/776-195-0x0000000000230000-0x0000000000231000-memory.dmp

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memory/1708-2-0x0000000000380000-0x00000000003EC000-memory.dmp

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memory/1708-3-0x0000000000400000-0x0000000002B9C000-memory.dmp

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memory/1708-87-0x0000000000400000-0x0000000002B9C000-memory.dmp

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memory/1708-1-0x0000000002CE0000-0x0000000002DE0000-memory.dmp

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memory/1708-95-0x0000000002CE0000-0x0000000002DE0000-memory.dmp

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memory/1708-23-0x0000000000400000-0x0000000002B9C000-memory.dmp

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memory/1708-54-0x0000000002CE0000-0x0000000002DE0000-memory.dmp

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memory/1868-186-0x00000000005A0000-0x00000000005A1000-memory.dmp

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memory/2744-132-0x0000000000400000-0x000000000063B000-memory.dmp

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memory/2744-147-0x00000000007F0000-0x00000000008F0000-memory.dmp

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memory/2744-146-0x0000000000400000-0x000000000063B000-memory.dmp

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memory/2744-22-0x0000000000400000-0x000000000063B000-memory.dmp

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memory/2744-20-0x00000000007F0000-0x00000000008F0000-memory.dmp

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memory/2744-21-0x0000000000230000-0x0000000000257000-memory.dmp

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memory/2744-24-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/2744-53-0x0000000000400000-0x000000000063B000-memory.dmp

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memory/2744-68-0x0000000000400000-0x000000000063B000-memory.dmp

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memory/2744-67-0x00000000007F0000-0x00000000008F0000-memory.dmp

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memory/2744-62-0x0000000000400000-0x000000000063B000-memory.dmp

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