stealc | e8e156b49677640ac4da557b185eecd39a002ee059a5fbde5d7c92ccb6393e23

General

Target

658284074f756693ffa9817d97af67f4.exe
Size

1.7MB
MD5

658284074f756693ffa9817d97af67f4
SHA1

954801c7500ee52e3edb3d06aab3db3243ced6bf
SHA256

e8e156b49677640ac4da557b185eecd39a002ee059a5fbde5d7c92ccb6393e23
SHA512

43d3d9ba9e555bca0efc58f44f58ed958e28d373e848bd6a3f66b56939e8486c2af24f5df0aced0de3dc1eefcb4688b106d447e5ddbdc652257a77b42864c211
SSDEEP

49152:6NnzaiYGt0UlGZYB3LNhFMg0scGc1nu4jwvf:8IGt0UlGZYrEsFcImwvf

Score

10^/10

stealc kira defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

kira

C2

http://185.215.113.115

Attributes

url_path
/c4becf79229cb002.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	658284074f756693ffa9817d97af67f4.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	658284074f756693ffa9817d97af67f4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	658284074f756693ffa9817d97af67f4.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Wine	658284074f756693ffa9817d97af67f4.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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2688	658284074f756693ffa9817d97af67f4.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2872	2688	WerFault.exe	29

System Location Discovery: System Language Discovery 1 TTPs 1 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	658284074f756693ffa9817d97af67f4.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	658284074f756693ffa9817d97af67f4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	658284074f756693ffa9817d97af67f4.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2688	658284074f756693ffa9817d97af67f4.exe
2688	658284074f756693ffa9817d97af67f4.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 2872	2688	658284074f756693ffa9817d97af67f4.exe	31
PID 2688 wrote to memory of 2872	2688	658284074f756693ffa9817d97af67f4.exe	31
PID 2688 wrote to memory of 2872	2688	658284074f756693ffa9817d97af67f4.exe	31
PID 2688 wrote to memory of 2872	2688	658284074f756693ffa9817d97af67f4.exe	31

C:\Users\Admin\AppData\Local\Temp\658284074f756693ffa9817d97af67f4.exe
"C:\Users\Admin\AppData\Local\Temp\658284074f756693ffa9817d97af67f4.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2688 -s 936
  2⤵
  - Program crash
  PID:2872

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2688-0-0x0000000000A50000-0x00000000010F5000-memory.dmp

Filesize
6.6MB

Download
memory/2688-1-0x0000000077980000-0x0000000077982000-memory.dmp

Filesize
8KB

Download
memory/2688-2-0x0000000000A51000-0x0000000000A68000-memory.dmp

Filesize
92KB

Download
memory/2688-3-0x0000000000A50000-0x00000000010F5000-memory.dmp

Filesize
6.6MB

Download
memory/2688-4-0x0000000000A50000-0x00000000010F5000-memory.dmp

Filesize
6.6MB

Download
memory/2688-5-0x0000000000A50000-0x00000000010F5000-memory.dmp

Filesize
6.6MB

Download
memory/2688-6-0x0000000000A50000-0x00000000010F5000-memory.dmp

Filesize
6.6MB

Download
memory/2688-7-0x0000000000A50000-0x00000000010F5000-memory.dmp

Filesize
6.6MB

Download
memory/2688-8-0x0000000000A50000-0x00000000010F5000-memory.dmp

Filesize
6.6MB

Download
memory/2688-9-0x0000000000A50000-0x00000000010F5000-memory.dmp

Filesize
6.6MB

Download
memory/2688-10-0x0000000000A50000-0x00000000010F5000-memory.dmp

Filesize
6.6MB

Download
memory/2688-11-0x0000000000A50000-0x00000000010F5000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads