stealc | 12ca4ad8cd613c8d086cd39a5c6e787c12209f2271ba850817b72eae3cd559da

Analysis

max time kernel
94s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30/11/2024, 21:21

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General

Target

TT18.exe
Size

12KB
MD5

ceb5022b92f0429137dc0fb67371e901
SHA1

999932b537591401dfa1a74df00dae99264bd994
SHA256

8d2f2dce701f8dc555e74b53bfaf7a1337027adc7fadc094b2eba3bb5b688f1b
SHA512

a7acdf417ef81f131c050bc8bd364edddf7a2ebc446c69411d549c14ca8967af7b8c8a2d4556018f148d1b57bc985e10104cdc72e2bed518cfe3280b0254a3d8
SSDEEP

192:knUbCDQoJq4Hb0jPuiJddudb7Z+XX1cNIQKXy+AFtaffEOsSRMWSVP1W58:kg3MGWimFNIQKX4Fgf8OxRBSVU

Score

10^/10

stealc vidar 41d35cbb974bc2d1287dcd4381b4a2a8 discovery execution stealer

Malware Config

Extracted

Family

vidar

Version

11.8

Botnet

41d35cbb974bc2d1287dcd4381b4a2a8

https://t.me/fu4chmo

https://steamcommunity.com/profiles/76561199802540894

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Safari/605.1.15 Ddg/17.6

Signatures

Detect Vidar Stealer 3 IoCs

stealer

resource	yara_rule
behavioral14/files/0x0011000000023c90-138.dat	family_vidar_v7
behavioral14/memory/3544-145-0x0000000000EF0000-0x0000000001149000-memory.dmp	family_vidar_v7
behavioral14/memory/3544-160-0x0000000000EF0000-0x0000000001149000-memory.dmp	family_vidar_v7

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

Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
5060	powershell.exe
2552	powershell.exe
4040	powershell.exe
5028	powershell.exe
4228	powershell.exe
4484	powershell.exe

Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	TT18.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	8Z9pqUvg.exe

Executes dropped EXE 1 IoCs

pid	Process
3544	8Z9pqUvg.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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
15	raw.githubusercontent.com
16	raw.githubusercontent.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 10 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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TT18.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8Z9pqUvg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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	8Z9pqUvg.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	8Z9pqUvg.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1920	timeout.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
5060	powershell.exe
5060	powershell.exe
2552	powershell.exe
2552	powershell.exe
4040	powershell.exe
4040	powershell.exe
5028	powershell.exe
5028	powershell.exe
4228	powershell.exe
4228	powershell.exe
4484	powershell.exe
4484	powershell.exe
3212	TT18.exe
3544	8Z9pqUvg.exe
3544	8Z9pqUvg.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3212	TT18.exe
Token: SeDebugPrivilege	5060	powershell.exe
Token: SeDebugPrivilege	2552	powershell.exe
Token: SeDebugPrivilege	4040	powershell.exe
Token: SeDebugPrivilege	5028	powershell.exe
Token: SeDebugPrivilege	4228	powershell.exe
Token: SeDebugPrivilege	4484	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3212 wrote to memory of 5060	3212	TT18.exe	82
PID 3212 wrote to memory of 5060	3212	TT18.exe	82
PID 3212 wrote to memory of 5060	3212	TT18.exe	82
PID 5060 wrote to memory of 2552	5060	powershell.exe	85
PID 5060 wrote to memory of 2552	5060	powershell.exe	85
PID 5060 wrote to memory of 2552	5060	powershell.exe	85
PID 3212 wrote to memory of 4040	3212	TT18.exe	86
PID 3212 wrote to memory of 4040	3212	TT18.exe	86
PID 3212 wrote to memory of 4040	3212	TT18.exe	86
PID 4040 wrote to memory of 5028	4040	powershell.exe	88
PID 4040 wrote to memory of 5028	4040	powershell.exe	88
PID 4040 wrote to memory of 5028	4040	powershell.exe	88
PID 3212 wrote to memory of 4228	3212	TT18.exe	89
PID 3212 wrote to memory of 4228	3212	TT18.exe	89
PID 3212 wrote to memory of 4228	3212	TT18.exe	89
PID 4228 wrote to memory of 4484	4228	powershell.exe	91
PID 4228 wrote to memory of 4484	4228	powershell.exe	91
PID 4228 wrote to memory of 4484	4228	powershell.exe	91
PID 3212 wrote to memory of 3544	3212	TT18.exe	93
PID 3212 wrote to memory of 3544	3212	TT18.exe	93
PID 3212 wrote to memory of 3544	3212	TT18.exe	93
PID 3544 wrote to memory of 5112	3544	8Z9pqUvg.exe	109
PID 3544 wrote to memory of 5112	3544	8Z9pqUvg.exe	109
PID 3544 wrote to memory of 5112	3544	8Z9pqUvg.exe	109
PID 5112 wrote to memory of 1920	5112	cmd.exe	112
PID 5112 wrote to memory of 1920	5112	cmd.exe	112
PID 5112 wrote to memory of 1920	5112	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\TT18.exe
"C:\Users\Admin\AppData\Local\Temp\TT18.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3212
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" powershell -Command "Add-MpPreference -ExclusionPath 'C:\jQWJFzBAwS'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5060
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\jQWJFzBAwS
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2552
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" powershell -Command "Add-MpPreference -ExclusionPath 'C:\Windows'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4040
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\Windows
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5028
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4228
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\Users
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4484
- C:\jQWJFzBAwS\8Z9pqUvg.exe
  "C:\jQWJFzBAwS\8Z9pqUvg.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3544
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\jQWJFzBAwS\8Z9pqUvg.exe" & rd /s /q "C:\ProgramData\EGIJEBGDAFHI" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5112
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
11KB

MD5
278ee3b98704c589e023ca610be650b4

SHA1
995b1e2b7b95152e87acbada24347b3ac2f2fc9a

SHA256
3128e326f9311956d96d0c41392d37e854f6908c89dd1a425e02648a4e1a9f94

SHA512
1d1c0be05e81f18a59f56cd356808bf1e3acb5736359f72c42b9663fd8c0addcba5abdb26d0017708fbba51b8e904a281a7d8badd22198be9c2e4449d2d82cb0

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
11KB

MD5
e10c1dd465b7282af536431e957198b5

SHA1
2e2af8eae8c7a1d2c4a27cb81b1c32c0316092fb

SHA256
2c0da1d3e8dc86352b8d440a247d5480d835d5b523f0f9509138b143596fee8a

SHA512
f170617cd93817691ff57809f47c4b129fbcde7b63a8c7f20b928589dab7748b0ea44cea7b0be0c92eb987a942222a4e3aad21663030bcb8e125df3e9a362dfa

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
11KB

MD5
7c7d5387cae6da56e5d9c6f956350dd1

SHA1
93b715ccc3ae767cde649a5eae904ac2090a5149

SHA256
e1af56d1e911cd70315e25af99a6c6481d8e15e91afa0bd6b1916c1c5cc35b65

SHA512
bdb42c0fc5c25328dfc7a2e3a305188586faaad36b289e1fd44d497664c1b159305f228f077f71cbf2c4815acb9824ec3e4b73922a31e4524f1053f375286535

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qc00lku0.zlb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\jQWJFzBAwS\8Z9pqUvg.exe

Filesize
275KB

MD5
0a7b3454fdad8431bd3523648c915665

SHA1
800a97a7c1a92a92cac76afc1fe5349895ee5287

SHA256
baf217d7bb8f3a86856def6891638318a94ed5d7082149d4dd4cb755d90d86ce

SHA512
020e45eaeee083d6739155d9a821ab54dd07f1320b8efb73871ee5d29188122fdbb7d39b34a8b3694a8b0c08ae1801ec370e40ff8d837c9190a72905f26baff9

Download Submit
memory/2552-47-0x0000000007480000-0x000000000749E000-memory.dmp

Filesize
120KB

Download
memory/2552-54-0x0000000007A50000-0x0000000007A61000-memory.dmp

Filesize
68KB

Download
memory/2552-61-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/2552-57-0x0000000007B90000-0x0000000007BAA000-memory.dmp

Filesize
104KB

Download
memory/2552-58-0x0000000007B70000-0x0000000007B78000-memory.dmp

Filesize
32KB

Download
memory/2552-56-0x0000000007A90000-0x0000000007AA4000-memory.dmp

Filesize
80KB

Download
memory/2552-55-0x0000000007A80000-0x0000000007A8E000-memory.dmp

Filesize
56KB

Download
memory/2552-53-0x0000000007AD0000-0x0000000007B66000-memory.dmp

Filesize
600KB

Download
memory/2552-52-0x00000000078C0000-0x00000000078CA000-memory.dmp

Filesize
40KB

Download
memory/2552-23-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/2552-24-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/2552-34-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/2552-50-0x0000000007E90000-0x000000000850A000-memory.dmp

Filesize
6.5MB

Download
memory/2552-36-0x0000000070EC0000-0x0000000070F0C000-memory.dmp

Filesize
304KB

Download
memory/2552-49-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/2552-48-0x00000000074F0000-0x0000000007593000-memory.dmp

Filesize
652KB

Download
memory/2552-46-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/2552-35-0x00000000074A0000-0x00000000074D2000-memory.dmp

Filesize
200KB

Download
memory/2552-51-0x0000000007850000-0x000000000786A000-memory.dmp

Filesize
104KB

Download
memory/3212-97-0x00000000750CE000-0x00000000750CF000-memory.dmp

Filesize
4KB

Download
memory/3212-0-0x00000000750CE000-0x00000000750CF000-memory.dmp

Filesize
4KB

Download
memory/3212-3-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/3212-146-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/3212-1-0x0000000000140000-0x000000000014A000-memory.dmp

Filesize
40KB

Download
memory/3212-77-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/3544-145-0x0000000000EF0000-0x0000000001149000-memory.dmp

Filesize
2.3MB

Download
memory/3544-160-0x0000000000EF0000-0x0000000001149000-memory.dmp

Filesize
2.3MB

Download
memory/4040-75-0x0000000005F40000-0x0000000006294000-memory.dmp

Filesize
3.3MB

Download
memory/4228-101-0x0000000005620000-0x0000000005974000-memory.dmp

Filesize
3.3MB

Download
memory/4484-121-0x0000000070EC0000-0x0000000070F0C000-memory.dmp

Filesize
304KB

Download
memory/5028-87-0x0000000070EC0000-0x0000000070F0C000-memory.dmp

Filesize
304KB

Download
memory/5060-20-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/5060-65-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/5060-22-0x0000000006670000-0x00000000066BC000-memory.dmp

Filesize
304KB

Download
memory/5060-21-0x0000000006650000-0x000000000666E000-memory.dmp

Filesize
120KB

Download
memory/5060-16-0x0000000006030000-0x0000000006384000-memory.dmp

Filesize
3.3MB

Download
memory/5060-14-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/5060-7-0x0000000005710000-0x0000000005776000-memory.dmp

Filesize
408KB

Download
memory/5060-8-0x0000000005E00000-0x0000000005E66000-memory.dmp

Filesize
408KB

Download
memory/5060-6-0x0000000005670000-0x0000000005692000-memory.dmp

Filesize
136KB

Download
memory/5060-4-0x00000000057D0000-0x0000000005DF8000-memory.dmp

Filesize
6.2MB

Download
memory/5060-5-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/5060-2-0x00000000050A0000-0x00000000050D6000-memory.dmp

Filesize
216KB

Download