stealc | 94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef

Analysis

max time kernel
94s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/06/2024, 01:39

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General

Target

94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe
Size

2.4MB
MD5

82f1a97f6d08a0d16ad9e44d05f724ba
SHA1

4ac47621e58f6dfc22500de1c85feccca94cbefe
SHA256

94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef
SHA512

76ec2d51301f3f15a74ce572d10f4e99727d40b6a841195e798987fa17b3ae5604d9fd6fc824f2eef209cc60827ed400deb35c85ca0e408d0c8a4350f31dbdd2
SSDEEP

49152:uxFPv/gxRpiyLV1i/DeGjYiw7OWsAKSyue66vrHJk:uV38p9+DeGcFOLzub6vry

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 1 IoCs

stealer

resource	yara_rule
behavioral2/memory/772-0-0x0000000000780000-0x0000000000E47000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
behavioral2/memory/772-0-0x0000000000780000-0x0000000000E47000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs

resource	yara_rule
behavioral2/memory/772-0-0x0000000000780000-0x0000000000E47000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Detects executables containing potential Windows Defender anti-emulation checks 1 IoCs

resource	yara_rule
behavioral2/memory/772-0-0x0000000000780000-0x0000000000E47000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation

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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
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

Checks processor information in registry 2 TTPs 1 IoCs

Processor 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\CentralProcessor\0\ProcessorNameString	94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3860	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
772	94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe
772	94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe
772	94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe
772	94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 772 wrote to memory of 2784	772	94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe	89
PID 772 wrote to memory of 2784	772	94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe	89
PID 772 wrote to memory of 2784	772	94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe	89
PID 2784 wrote to memory of 3860	2784	cmd.exe	91
PID 2784 wrote to memory of 3860	2784	cmd.exe	91
PID 2784 wrote to memory of 3860	2784	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe
"C:\Users\Admin\AppData\Local\Temp\94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe"
1⤵
- Checks computer location settings
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\94f72fd4417343042fcacd56bd4491f0d638d37388c8d79839c3742c2ebbcaef.exe" & rd /s /q "C:\ProgramData\DGCBAFIJDGHC" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 10
    3⤵
    - Delays execution with timeout.exe
    PID:3860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/772-0-0x0000000000780000-0x0000000000E47000-memory.dmp

Filesize
6.8MB

Download
memory/772-7-0x000000001E6E0000-0x000000001E93F000-memory.dmp

Filesize
2.4MB

Download