stealc | f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c

General

Target

f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe
Size

482KB
MD5

59ea3585c186d4bf1ef0f9d4a450b7f2
SHA1

896ce03b0b173c12fd2b1f813c8429dbd5b4d944
SHA256

f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c
SHA512

fdcf19be471ebc44b7e40409167f4688906598b54a49e784eb03e3fe2ba70400035b4f8df7bb604866c7049f593c86d135619985f6be25f345a149d2d54e8b32
SSDEEP

12288:ok5fqcuHORKaf9Dxs66+B75OEcr7aOipQgOwJWDPG:rCIH2ZKirODTM7G

Score

10^/10

stealc default credential_access discovery spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

default

C2

http://46.8.231.109

Attributes

url_path
/c4754d4f680ead72.php

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
4380	MSBuild.exe
4380	MSBuild.exe

Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4472 set thread context of 4380	4472	f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe	75

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
752	4472	WerFault.exe	74

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4380	MSBuild.exe
4380	MSBuild.exe
4380	MSBuild.exe
4380	MSBuild.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
692	cmd.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4472 wrote to memory of 4380	4472	f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe	75
PID 4472 wrote to memory of 4380	4472	f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe	75
PID 4472 wrote to memory of 4380	4472	f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe	75
PID 4472 wrote to memory of 4380	4472	f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe	75
PID 4472 wrote to memory of 4380	4472	f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe	75
PID 4472 wrote to memory of 4380	4472	f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe	75
PID 4472 wrote to memory of 4380	4472	f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe	75
PID 4472 wrote to memory of 4380	4472	f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe	75
PID 4472 wrote to memory of 4380	4472	f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe	75
PID 4380 wrote to memory of 692	4380	MSBuild.exe	78
PID 4380 wrote to memory of 692	4380	MSBuild.exe	78
PID 4380 wrote to memory of 692	4380	MSBuild.exe	78

C:\Users\Admin\AppData\Local\Temp\f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe
"C:\Users\Admin\AppData\Local\Temp\f4e12c8a0e3559437463881dcaa2dc96e1df92da34d922ccd6c09c317985a22c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4472
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4380
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\ProgramData\CFIEGDAEHI.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4472 -s 284
  2⤵
  - Program crash
  PID:752

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/4380-1-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/4380-3-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/4380-4-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/4380-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4380-64-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/4380-65-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/4472-0-0x0000000000E45000-0x0000000000E46000-memory.dmp

Filesize
4KB

Download
memory/4472-63-0x0000000000E45000-0x0000000000E46000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing