stealc | c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-12-2024 11:13

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General

Target

c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4_Sigmanly.exe
Size

2.8MB
MD5

e48ca69b3f439cf66679ffe60efd564f
SHA1

fb466d0297ee39819d14dffb99c69bab52dcef4b
SHA256

c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4
SHA512

529b1693ab4415484b20a9fa0bd6a7d7ca017da3341abebf900be63425fa77d9d2296b7506059696e383307d24ec4ecb7f6e3936551248642cc7ff71d0aca194
SSDEEP

49152:vI2DfcBpykrnsgz+yNjY4FW886n/c0ueHnS:vI2Dfo/ns4+yNjYMW74se

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

http://185.215.113.206

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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4_Sigmanly.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\SystemBiosVersion	c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4_Sigmanly.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4_Sigmanly.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.

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	c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4_Sigmanly.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
768	c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4_Sigmanly.exe

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	c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4_Sigmanly.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
768	c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4_Sigmanly.exe

C:\Users\Admin\AppData\Local\Temp\c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4_Sigmanly.exe
"C:\Users\Admin\AppData\Local\Temp\c9b2322743d3daf2d975110637d09f00bf2481eae2a447f718cf53696eac35c4_Sigmanly.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
- Suspicious behavior: EnumeratesProcesses
PID:768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/768-0-0x0000000001330000-0x000000000182F000-memory.dmp

Filesize
5.0MB

Download
memory/768-1-0x0000000077C00000-0x0000000077C02000-memory.dmp

Filesize
8KB

Download
memory/768-2-0x0000000001331000-0x0000000001348000-memory.dmp

Filesize
92KB

Download
memory/768-3-0x0000000001330000-0x000000000182F000-memory.dmp

Filesize
5.0MB

Download
memory/768-5-0x0000000001330000-0x000000000182F000-memory.dmp

Filesize
5.0MB

Download