stealc | fe7c9c900df7c51f53243053dcf41ee781d284206742952aea704735d8d4a198

General

Target

26ceb3d9dcc1821192b39eea6832d51d.exe
Size

420KB
MD5

26ceb3d9dcc1821192b39eea6832d51d
SHA1

d22dae62f3d122acaec58a03550d5d99a9b7cfb4
SHA256

fe7c9c900df7c51f53243053dcf41ee781d284206742952aea704735d8d4a198
SHA512

2dd773c7afa7cb46c1f94d195e9b542a5e8ec150b608d8dcde0aa60f7aff15ea0fced33fe647519cca91ada905dce14576a8b2b84bc0c9ecfc6f362a3cdccda8
SSDEEP

12288:+kmdgMiHbQuCIu+Sp+tXcyZpCxFzR7DB5:zmAHq+Sp+RbpCrF7V

Score

10^/10

stealc default discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

default

C2

http://92.255.57.89

Attributes

url_path
/45c616e921a794b8.php

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	26ceb3d9dcc1821192b39eea6832d51d.exe

Executes dropped EXE 1 IoCs

pid	Process
2200	B759.tmp.exe

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
2792	2200	WerFault.exe	90

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	26ceb3d9dcc1821192b39eea6832d51d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	B759.tmp.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	B759.tmp.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	B759.tmp.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2200	B759.tmp.exe
2200	B759.tmp.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2808	26ceb3d9dcc1821192b39eea6832d51d.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2808	26ceb3d9dcc1821192b39eea6832d51d.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 2200	2808	26ceb3d9dcc1821192b39eea6832d51d.exe	90
PID 2808 wrote to memory of 2200	2808	26ceb3d9dcc1821192b39eea6832d51d.exe	90
PID 2808 wrote to memory of 2200	2808	26ceb3d9dcc1821192b39eea6832d51d.exe	90

C:\Users\Admin\AppData\Local\Temp\26ceb3d9dcc1821192b39eea6832d51d.exe
"C:\Users\Admin\AppData\Local\Temp\26ceb3d9dcc1821192b39eea6832d51d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Users\Admin\AppData\Local\Temp\B759.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\B759.tmp.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2200
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 1032
    3⤵
    - Program crash
    PID:2792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2200 -ip 2200
1⤵
PID:3788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\B759.tmp.exe

Filesize
297KB

MD5
5de218396f8c0a36cee31b8ee4fd0bfe

SHA1
9a57c0ae8640caed5101372147b73c87dea4b2da

SHA256
84b4eda5d456a2c49d117a0b99bc2ed03044eaa144eb5f6c28a248e673e406db

SHA512
82f557e91f94a2ec8dee5b32e21b07bce01425ea72fa02ded984e5cdd98019c6028444f3cb10332661a1e8bd3a90edcd566b602cac03b94ccd1f276e4c59553f

Download Submit
memory/2200-28-0x0000000000400000-0x0000000000822000-memory.dmp

Filesize
4.1MB

Download
memory/2200-29-0x0000000000400000-0x0000000000822000-memory.dmp

Filesize
4.1MB

Download
memory/2200-31-0x0000000000400000-0x0000000000822000-memory.dmp

Filesize
4.1MB

Download
memory/2808-2-0x0000000002620000-0x0000000002685000-memory.dmp

Filesize
404KB

Download
memory/2808-1-0x0000000000C30000-0x0000000000D30000-memory.dmp

Filesize
1024KB

Download
memory/2808-3-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2808-10-0x0000000000C30000-0x0000000000D30000-memory.dmp

Filesize
1024KB

Download
memory/2808-12-0x0000000002620000-0x0000000002685000-memory.dmp

Filesize
404KB

Download
memory/2808-11-0x0000000000400000-0x0000000000841000-memory.dmp

Filesize
4.3MB

Download
memory/2808-16-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2808-30-0x0000000000400000-0x0000000000841000-memory.dmp

Filesize
4.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads