stealc | 9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157

Analysis

max time kernel
90s
max time network
102s
platform
windows11-21h2_x64
resource
win11-20240704-en
resource tags

arch:x64arch:x86image:win11-20240704-enlocale:en-usos:windows11-21h2-x64system
submitted
06/07/2024, 13:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe
Size

5.0MB
MD5

865306ffc5542139a3d57219ed1548bc
SHA1

7da9b0e42bd66f36556d3fb2e62db17c061d184f
SHA256

9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157
SHA512

033fca1c0f72348c41d4e062633a6ff04edb5fd6235bf8af831faa30ac956fea775a6ea0a40791c30c6a265d37d86e17226eb0d771a64e4e92c0f72d832464b6
SSDEEP

49152:vL/Johw36b9y1H8tatteWuwRYBRczgpYIugrrwOUGQZjdXd7Eh28gZV0E9yJglZU:vLhUwKy5RKczgy8rCGIm0H6gBvMnK4

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

https://t.me/bu77un

https://steamcommunity.com/profiles/76561199730044335

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.1) Gecko/20100101 Firefox/128.1

Signatures

Detect Vidar Stealer 5 IoCs

stealer

resource	yara_rule
behavioral2/memory/2344-68-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2344-72-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2344-66-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2344-75-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2344-140-0x0000000000400000-0x0000000000648000-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
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
992	ECFHJKEBAA.exe

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1760 set thread context of 2344	1760	9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe	81
PID 992 set thread context of 568	992	ECFHJKEBAA.exe	86

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2360	992	WerFault.exe	83

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	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4924	timeout.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2344	MSBuild.exe
2344	MSBuild.exe
2344	MSBuild.exe
2344	MSBuild.exe
2344	MSBuild.exe
2344	MSBuild.exe
568	RegAsm.exe
568	RegAsm.exe
568	RegAsm.exe
568	RegAsm.exe
2344	MSBuild.exe
2344	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1760	9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2344	1760	9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe	81
PID 1760 wrote to memory of 2344	1760	9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe	81
PID 1760 wrote to memory of 2344	1760	9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe	81
PID 1760 wrote to memory of 2344	1760	9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe	81
PID 1760 wrote to memory of 2344	1760	9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe	81
PID 1760 wrote to memory of 2344	1760	9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe	81
PID 1760 wrote to memory of 2344	1760	9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe	81
PID 1760 wrote to memory of 2344	1760	9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe	81
PID 1760 wrote to memory of 2344	1760	9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe	81
PID 2344 wrote to memory of 992	2344	MSBuild.exe	83
PID 2344 wrote to memory of 992	2344	MSBuild.exe	83
PID 2344 wrote to memory of 992	2344	MSBuild.exe	83
PID 992 wrote to memory of 568	992	ECFHJKEBAA.exe	86
PID 992 wrote to memory of 568	992	ECFHJKEBAA.exe	86
PID 992 wrote to memory of 568	992	ECFHJKEBAA.exe	86
PID 992 wrote to memory of 568	992	ECFHJKEBAA.exe	86
PID 992 wrote to memory of 568	992	ECFHJKEBAA.exe	86
PID 992 wrote to memory of 568	992	ECFHJKEBAA.exe	86
PID 992 wrote to memory of 568	992	ECFHJKEBAA.exe	86
PID 992 wrote to memory of 568	992	ECFHJKEBAA.exe	86
PID 992 wrote to memory of 568	992	ECFHJKEBAA.exe	86
PID 2344 wrote to memory of 1952	2344	MSBuild.exe	90
PID 2344 wrote to memory of 1952	2344	MSBuild.exe	90
PID 2344 wrote to memory of 1952	2344	MSBuild.exe	90
PID 1952 wrote to memory of 4924	1952	cmd.exe	92
PID 1952 wrote to memory of 4924	1952	cmd.exe	92
PID 1952 wrote to memory of 4924	1952	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe
"C:\Users\Admin\AppData\Local\Temp\9e5eb02dd5ddfc26a381313863b1f5d78e72c15b2a78500a83ec024dae202157.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2344
- - C:\ProgramData\ECFHJKEBAA.exe
    "C:\ProgramData\ECFHJKEBAA.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:992
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:568
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 992 -s 296
      4⤵
      Program crash
      PID:2360
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\IDBGHDGHCGHC" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1952
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:4924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 992 -ip 992
1⤵
PID:3436

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\ECFHJKEBAA.exe

Filesize
937KB

MD5
168c5908924803d268d26965c32a5620

SHA1
9e0e2dc9c7e931c4ee860c32d83711c433f7b1a3

SHA256
2fd72d0d0fbc053a53adee5d9ec6cffde3fb5a3c6ba0c0490e24552b264d5449

SHA512
749f0e4da8d6fde35b53e769b0b594c2e63835f970eedc54c8c15889863811b5fb296650ae9f5e255bafdd4b942ad3434a60c48e05f1283820c378d30645f1c1

Download Submit
memory/568-139-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/568-136-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/992-133-0x0000000001250000-0x0000000001251000-memory.dmp

Filesize
4KB

Download
memory/1760-45-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-5-0x0000000005E80000-0x0000000005E9C000-memory.dmp

Filesize
112KB

Download
memory/1760-6-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-7-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-10-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-31-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-41-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-39-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-37-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-35-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-55-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-63-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-53-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-1-0x0000000000F60000-0x0000000001462000-memory.dmp

Filesize
5.0MB

Download
memory/1760-2-0x0000000005F50000-0x0000000005FEC000-memory.dmp

Filesize
624KB

Download
memory/1760-71-0x00000000749D0000-0x0000000075181000-memory.dmp

Filesize
7.7MB

Download
memory/1760-70-0x00000000749D0000-0x0000000075181000-memory.dmp

Filesize
7.7MB

Download
memory/1760-3-0x00000000749D0000-0x0000000075181000-memory.dmp

Filesize
7.7MB

Download
memory/1760-47-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-65-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-59-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-0-0x00000000749DE000-0x00000000749DF000-memory.dmp

Filesize
4KB

Download
memory/1760-61-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-57-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-43-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-51-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-49-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-33-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-29-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-27-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-25-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-23-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-21-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-19-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-17-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-15-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-11-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-13-0x0000000005E80000-0x0000000005E95000-memory.dmp

Filesize
84KB

Download
memory/1760-4-0x0000000006130000-0x0000000006274000-memory.dmp

Filesize
1.3MB

Download
memory/2344-75-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2344-66-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2344-72-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2344-68-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2344-140-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download