stealc | 2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417

General

Target

2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe
Size

425KB
MD5

c64af626c4ed0784e010f5f2210e97f4
SHA1

03ff97d0f1530600ef134d64ddeabbe5770432a6
SHA256

2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417
SHA512

b8905e33b1a01fc94ed440c7c435e58b2fb43639aa377118e1ab894de2bf20d52803fd80e73c863c4bb8b8fda6cf246e7d942cc8f985e3d81a9c7702af268f0a
SSDEEP

12288:tAZeNp7Ik3kXzCNAt8T7yejH2KlN2fq3S9:tAop5KCNEoWS3

Score

10^/10

stealc vidar cac73a25dd295fef8853d330a75f6da4 discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

Version

10.1

Botnet

cac73a25dd295fef8853d330a75f6da4

C2

https://t.me/memve4erin

https://steamcommunity.com/profiles/76561199699680841

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

Detect Vidar Stealer 5 IoCs

stealer

resource	yara_rule
behavioral1/memory/4672-1-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4672-3-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4672-5-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4672-6-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4672-7-0x0000000000400000-0x0000000000648000-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

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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	RegAsm.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
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 SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1760 set thread context of 4672	1760	2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe	82

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
1808	1760	WerFault.exe	80

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	RegAsm.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4844	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4672	RegAsm.exe
4672	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 4672	1760	2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe	82
PID 1760 wrote to memory of 4672	1760	2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe	82
PID 1760 wrote to memory of 4672	1760	2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe	82
PID 1760 wrote to memory of 4672	1760	2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe	82
PID 1760 wrote to memory of 4672	1760	2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe	82
PID 1760 wrote to memory of 4672	1760	2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe	82
PID 1760 wrote to memory of 4672	1760	2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe	82
PID 1760 wrote to memory of 4672	1760	2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe	82
PID 1760 wrote to memory of 4672	1760	2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe	82
PID 4672 wrote to memory of 2144	4672	RegAsm.exe	87
PID 4672 wrote to memory of 2144	4672	RegAsm.exe	87
PID 4672 wrote to memory of 2144	4672	RegAsm.exe	87
PID 2144 wrote to memory of 4844	2144	cmd.exe	89
PID 2144 wrote to memory of 4844	2144	cmd.exe	89
PID 2144 wrote to memory of 4844	2144	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe
"C:\Users\Admin\AppData\Local\Temp\2da1abbc4cc0cb6c5819206da60dbb09d72b02034ef375cd40ce289bdf2dc417.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks computer location settings
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4672
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" & rd /s /q "C:\ProgramData\BAECFHJEBAAF" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2144
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:4844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1760 -s 136
  2⤵
  - Program crash
  PID:1808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1760 -ip 1760
1⤵
PID:4124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1760-0-0x0000000002CC0000-0x0000000002CC1000-memory.dmp

Filesize
4KB

Download
memory/4672-1-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4672-3-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4672-5-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4672-6-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4672-7-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads