stealc | 91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4

General

Target

91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe
Size

206KB
MD5

68076ff4fb08f203da72e47f536db2d3
SHA1

c7d2df2f68fefa1b3b9ddc61809966eaa6daef49
SHA256

91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4
SHA512

f400d2424839ae1ce5a362cddc759a46be3e0528d45ade309a182c202a03534acb24e90b9a02d17865c6f9a828d91d9d90927d0734ec8ffd8452a10b414ab5d6
SSDEEP

3072:0lyVDc5YYBO1w3EiWJ7UYsYz3PLk3l6z0u5xTewBj8L5R3yz2VlI/8agaOFrMKYp:WEw0iWhWifM6z0uHqwJS5xne8XZkEO

Score

10^/10

stealc default 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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2248 set thread context of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2656	2936	WerFault.exe	31

System Location Discovery: System Language Discovery 1 TTPs 2 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	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2248 wrote to memory of 2936	2248	91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe	31
PID 2936 wrote to memory of 2656	2936	RegAsm.exe	32
PID 2936 wrote to memory of 2656	2936	RegAsm.exe	32
PID 2936 wrote to memory of 2656	2936	RegAsm.exe	32
PID 2936 wrote to memory of 2656	2936	RegAsm.exe	32

C:\Users\Admin\AppData\Local\Temp\91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe
"C:\Users\Admin\AppData\Local\Temp\91f03b0ae9dcae932e3043b7cb19cf52541504e9a4510501d9cb2f1ddd6d10f4.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2936
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2936 -s 252
    3⤵
    - Program crash
    PID:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/2248-18-0x0000000074910000-0x0000000074FFE000-memory.dmp

Filesize
6.9MB

Download
memory/2248-1-0x0000000000E20000-0x0000000000E58000-memory.dmp

Filesize
224KB

Download
memory/2248-15-0x0000000002260000-0x0000000004260000-memory.dmp

Filesize
32.0MB

Download
memory/2248-0-0x000000007491E000-0x000000007491F000-memory.dmp

Filesize
4KB

Download
memory/2936-20-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2936-14-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2936-4-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2936-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2936-9-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2936-7-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2936-6-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2936-17-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/2936-10-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download

Analysis

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