stealc | 3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028a

General

Target

3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe
Size

502KB
MD5

f06e4aeb68de3502871c2899e96cd410
SHA1

2caf84657845bfe75b60f83f9fa01d1212f8670b
SHA256

3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028a
SHA512

cc5b94c108300b8eedbdff51d6849683d7ece59c91a6daf2afaeddcb0b8d2cdf214c0bb6751ba158ebdbc3a7cde811eff225947728493c17c61ee87ebae6ced3
SSDEEP

12288:EK2bpydeHVFhfXu7UG/SPbc7Rb9CdNGZrKC:EKIydidXfGKwRofGVb

Score

10^/10

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

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1508 set thread context of 2976	1508	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe	31

System Location Discovery: System Language Discovery 1 TTPs 4 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	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1408	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2976	MSBuild.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 2976	1508	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe	31
PID 1508 wrote to memory of 2976	1508	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe	31
PID 1508 wrote to memory of 2976	1508	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe	31
PID 1508 wrote to memory of 2976	1508	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe	31
PID 1508 wrote to memory of 2976	1508	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe	31
PID 1508 wrote to memory of 2976	1508	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe	31
PID 1508 wrote to memory of 2976	1508	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe	31
PID 1508 wrote to memory of 2976	1508	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe	31
PID 1508 wrote to memory of 2976	1508	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe	31
PID 1508 wrote to memory of 2976	1508	3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe	31
PID 2976 wrote to memory of 2580	2976	MSBuild.exe	32
PID 2976 wrote to memory of 2580	2976	MSBuild.exe	32
PID 2976 wrote to memory of 2580	2976	MSBuild.exe	32
PID 2976 wrote to memory of 2580	2976	MSBuild.exe	32
PID 2580 wrote to memory of 1408	2580	cmd.exe	34
PID 2580 wrote to memory of 1408	2580	cmd.exe	34
PID 2580 wrote to memory of 1408	2580	cmd.exe	34
PID 2580 wrote to memory of 1408	2580	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe
"C:\Users\Admin\AppData\Local\Temp\3bc752d2803f660c3216bcfa6fcd3cfb03b21b8753d4bec32f4e679af854028aN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2976
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" & del "C:\ProgramData\*.dll"" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2580
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 5
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1508-0-0x0000000000BF9000-0x0000000000BFA000-memory.dmp

Filesize
4KB

Download
memory/2976-1-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/2976-7-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/2976-9-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/2976-10-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/2976-6-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2976-5-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/2976-4-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/2976-3-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/2976-2-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download
memory/2976-11-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2976-29-0x0000000000400000-0x0000000000661000-memory.dmp

Filesize
2.4MB

Download

Analysis

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