stealc | d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0

Analysis

max time kernel
149s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240214-en
resource tags

arch:x64arch:x86image:win11-20240214-enlocale:en-usos:windows11-21h2-x64system
submitted
03/04/2024, 09:15

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General

Target
d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe
Size 287KB
Sample240403-k8ac2sbd6v
SHA256 d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0
MD5 e2b4eb7e68865001a6973455d61d3e76
SHA1 c552dfb840523c826a1ea876fb9158e0de794749
SHA512 6dc2666c1722214afd9c0412d0ab49893e48ec708df8045b14da8b008201e9cda80df57a1d6c8c24b6614a8648afe4f741d76fe2442a5649e3e40a8fac934fdf
SSDEEP 3072:3HJSmAGBmtpeE+NOqUH3uSCAFNzG/rL4y6wv/a1AFftvcS7JFvl/itMTQ:3fUtVSoH5yHa6JhH7/9iMT
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 1 IoCs

pid	Process
5028	HCAFIJDGHC.exe

Loads dropped DLL 2 IoCs

pid	Process
4880	d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe
4880	d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3304	4880	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	d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1408	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4880	d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe
4880	d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe
4880	d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe
4880	d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4880 wrote to memory of 3684	4880	d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe	78
PID 4880 wrote to memory of 3684	4880	d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe	78
PID 4880 wrote to memory of 3684	4880	d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe	78
PID 3684 wrote to memory of 5028	3684	cmd.exe	82
PID 3684 wrote to memory of 5028	3684	cmd.exe	82
PID 3684 wrote to memory of 5028	3684	cmd.exe	82
PID 5028 wrote to memory of 4168	5028	HCAFIJDGHC.exe	84
PID 5028 wrote to memory of 4168	5028	HCAFIJDGHC.exe	84
PID 5028 wrote to memory of 4168	5028	HCAFIJDGHC.exe	84
PID 4168 wrote to memory of 1408	4168	cmd.exe	86
PID 4168 wrote to memory of 1408	4168	cmd.exe	86
PID 4168 wrote to memory of 1408	4168	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe
"C:\Users\Admin\AppData\Local\Temp\d9bc04af2ea725da9b1fa6831fd84a5ae57c4ebcb1c1ab68d2a427d7fbae15e0.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4880
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\HCAFIJDGHC.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3684
- - C:\Users\Admin\AppData\Local\Temp\HCAFIJDGHC.exe
    "C:\Users\Admin\AppData\Local\Temp\HCAFIJDGHC.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:5028
  - - 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\HCAFIJDGHC.exe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4168
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        5⤵
        Runs ping.exe
        
        PID:1408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4880 -s 2124
  2⤵
  - Program crash
  PID:3304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4880 -ip 4880
1⤵
PID:4636

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

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

Are.docx

Path C:\ProgramData\Are.docx
Size 11KB
SHA256 5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454
MD5 a33e5b189842c5867f46566bdbf7a095
SHA1 e1c06359f6a76da90d19e8fd95e79c832edb3196
SHA512 f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b
SSDEEP 192:CtNCEE33S7Ok0CMSYbcBVk6tqM16iPBkeawLWdxd7o3Lp:aNwC78uYbcBv6akwLWdxdE3Lp
MD5 SHA1 SHA512 SSDEEP

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mozglue.dll

Path C:\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 C:\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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HCAFIJDGHC.exe

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

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memory/4880-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/4880-1-0x0000000000A50000-0x0000000000B50000-memory.dmp

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memory/4880-2-0x0000000000400000-0x0000000000866000-memory.dmp

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memory/4880-3-0x00000000026B0000-0x00000000026D7000-memory.dmp

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memory/4880-90-0x0000000000400000-0x0000000000866000-memory.dmp

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memory/5028-91-0x0000000000710000-0x0000000000730000-memory.dmp

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memory/5028-92-0x00000000718E0000-0x0000000072091000-memory.dmp

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memory/5028-93-0x00000000051F0000-0x0000000005200000-memory.dmp

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memory/5028-97-0x00000000718E0000-0x0000000072091000-memory.dmp

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