stealc | 12ca4ad8cd613c8d086cd39a5c6e787c12209f2271ba850817b72eae3cd559da

Analysis

max time kernel
148s
max time network
153s
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 21:16

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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

Processes:

resource	yara_rule
behavioral2/files/0x000b000000023cc7-139.dat	family_vidar_v7
behavioral2/memory/2852-143-0x00000000002E0000-0x0000000000539000-memory.dmp	family_vidar_v7
behavioral2/memory/2852-161-0x00000000002E0000-0x0000000000539000-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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
1620	powershell.exe
3748	powershell.exe
1592	powershell.exe
1324	powershell.exe
1400	powershell.exe
3432	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

Processes:

TT18.exea4p1XslG.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	TT18.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	a4p1XslG.exe

Executes dropped EXE 1 IoCs

Processes:

a4p1XslG.exe

pid	Process
2852	a4p1XslG.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

Processes:

flow	ioc
19	raw.githubusercontent.com
20	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

Processes:

powershell.exepowershell.exepowershell.exeTT18.exepowershell.exepowershell.exepowershell.exea4p1XslG.execmd.exetimeout.exe

description	ioc	Process
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	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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a4p1XslG.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.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

Processes:

a4p1XslG.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	a4p1XslG.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	a4p1XslG.exe

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
1460	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exea4p1XslG.exe

pid	Process
3432	powershell.exe
3432	powershell.exe
1620	powershell.exe
1620	powershell.exe
3748	powershell.exe
3748	powershell.exe
1592	powershell.exe
1592	powershell.exe
1324	powershell.exe
1324	powershell.exe
1400	powershell.exe
1400	powershell.exe
2852	a4p1XslG.exe
2852	a4p1XslG.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

TT18.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	908	TT18.exe
Token: SeDebugPrivilege	3432	powershell.exe
Token: SeDebugPrivilege	1620	powershell.exe
Token: SeDebugPrivilege	3748	powershell.exe
Token: SeDebugPrivilege	1592	powershell.exe
Token: SeDebugPrivilege	1324	powershell.exe
Token: SeDebugPrivilege	1400	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

TT18.exepowershell.exepowershell.exepowershell.exea4p1XslG.execmd.exe

description	pid	Process	procid_target
PID 908 wrote to memory of 3432	908	TT18.exe	82
PID 908 wrote to memory of 3432	908	TT18.exe	82
PID 908 wrote to memory of 3432	908	TT18.exe	82
PID 3432 wrote to memory of 1620	3432	powershell.exe	84
PID 3432 wrote to memory of 1620	3432	powershell.exe	84
PID 3432 wrote to memory of 1620	3432	powershell.exe	84
PID 908 wrote to memory of 3748	908	TT18.exe	85
PID 908 wrote to memory of 3748	908	TT18.exe	85
PID 908 wrote to memory of 3748	908	TT18.exe	85
PID 3748 wrote to memory of 1592	3748	powershell.exe	87
PID 3748 wrote to memory of 1592	3748	powershell.exe	87
PID 3748 wrote to memory of 1592	3748	powershell.exe	87
PID 908 wrote to memory of 1324	908	TT18.exe	90
PID 908 wrote to memory of 1324	908	TT18.exe	90
PID 908 wrote to memory of 1324	908	TT18.exe	90
PID 1324 wrote to memory of 1400	1324	powershell.exe	92
PID 1324 wrote to memory of 1400	1324	powershell.exe	92
PID 1324 wrote to memory of 1400	1324	powershell.exe	92
PID 908 wrote to memory of 2852	908	TT18.exe	96
PID 908 wrote to memory of 2852	908	TT18.exe	96
PID 908 wrote to memory of 2852	908	TT18.exe	96
PID 2852 wrote to memory of 3080	2852	a4p1XslG.exe	101
PID 2852 wrote to memory of 3080	2852	a4p1XslG.exe	101
PID 2852 wrote to memory of 3080	2852	a4p1XslG.exe	101
PID 3080 wrote to memory of 1460	3080	cmd.exe	103
PID 3080 wrote to memory of 1460	3080	cmd.exe	103
PID 3080 wrote to memory of 1460	3080	cmd.exe	103

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 use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:908
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" powershell -Command "Add-MpPreference -ExclusionPath 'C:\COdX9fbh3M'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3432
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\COdX9fbh3M
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1620
- 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:3748
- - 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:1592
- 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:1324
- - 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:1400
- C:\COdX9fbh3M\a4p1XslG.exe
  "C:\COdX9fbh3M\a4p1XslG.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:2852
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\COdX9fbh3M\a4p1XslG.exe" & rd /s /q "C:\ProgramData\HDAFBAEBKJKF" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3080
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1460

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:\COdX9fbh3M\a4p1XslG.exe

Filesize
275KB

MD5
0a7b3454fdad8431bd3523648c915665

SHA1
800a97a7c1a92a92cac76afc1fe5349895ee5287

SHA256
baf217d7bb8f3a86856def6891638318a94ed5d7082149d4dd4cb755d90d86ce

SHA512
020e45eaeee083d6739155d9a821ab54dd07f1320b8efb73871ee5d29188122fdbb7d39b34a8b3694a8b0c08ae1801ec370e40ff8d837c9190a72905f26baff9

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

Filesize
2KB

MD5
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

Filesize
11KB

MD5
a6ca1d426148c9811d19ac6cd7c8c392

SHA1
f6ec93f6f2fc3b22b8f961f9af0c88169a65e4a5

SHA256
4622b6a8743cf8c7653da8330d986e33deca8f225a486aad7e580fbaf32b97a7

SHA512
9eaafbbf8ef04866410111414cfb4f0ddd558ac1f683221652382028e880c1359bb0c470857ee5e61e8ef16aa8d3536847b7e7e42898f9aafe65f87ea20520c0

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

Filesize
176B

MD5
2981e93fc8f23e611ebb8c6a44c3817a

SHA1
fcc0cdf240daebc97a25b70779f8c91604a435d8

SHA256
1871b7f5ca51967cef2700f5c4ad14c2d51d9177f162e2d006487565d2e3418c

SHA512
b3a4b6368d807db1bd25068f475775570549d7dab08acb497ebf3fbdf9bb5c24ddf9b44fe3380ba75f250829503c91b9f3ea6fe7aa217c9055a403c64c1e4177

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

Filesize
11KB

MD5
5cc6881b4256bbc30e4d608d41939d89

SHA1
74f296a0225ac72526c9458676e3a23cf4260eff

SHA256
a2f680a7519c20a4b59384282864a8ae56c75fab405fcb8d450f48d9d59d9de4

SHA512
0230f18eb0a7609bddda73ee8b258d79b50dbd30ab3b14502cecd4fdb0c7dfee2c4c6cb75df566e5c77944755ed7d0e43f81f424293a149a5c0f1fae86608f60

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_a5j3xs05.f5l.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/908-3-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/908-53-0x0000000074BFE000-0x0000000074BFF000-memory.dmp

Filesize
4KB

Download
memory/908-147-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/908-1-0x0000000000520000-0x000000000052A000-memory.dmp

Filesize
40KB

Download
memory/908-0-0x0000000074BFE000-0x0000000074BFF000-memory.dmp

Filesize
4KB

Download
memory/908-54-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/1400-122-0x00000000709F0000-0x0000000070A3C000-memory.dmp

Filesize
304KB

Download
memory/1592-90-0x00000000709F0000-0x0000000070A3C000-memory.dmp

Filesize
304KB

Download
memory/1620-62-0x0000000007A70000-0x0000000007A78000-memory.dmp

Filesize
32KB

Download
memory/1620-57-0x0000000007950000-0x0000000007961000-memory.dmp

Filesize
68KB

Download
memory/1620-24-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/1620-25-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/1620-36-0x00000000709F0000-0x0000000070A3C000-memory.dmp

Filesize
304KB

Download
memory/1620-35-0x00000000069E0000-0x0000000006A12000-memory.dmp

Filesize
200KB

Download
memory/1620-46-0x0000000006A20000-0x0000000006A3E000-memory.dmp

Filesize
120KB

Download
memory/1620-49-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/1620-48-0x0000000007640000-0x00000000076E3000-memory.dmp

Filesize
652KB

Download
memory/1620-47-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/1620-50-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/1620-51-0x0000000007D90000-0x000000000840A000-memory.dmp

Filesize
6.5MB

Download
memory/1620-52-0x0000000007750000-0x000000000776A000-memory.dmp

Filesize
104KB

Download
memory/1620-65-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/1620-61-0x0000000007A90000-0x0000000007AAA000-memory.dmp

Filesize
104KB

Download
memory/1620-55-0x00000000077C0000-0x00000000077CA000-memory.dmp

Filesize
40KB

Download
memory/1620-56-0x00000000079D0000-0x0000000007A66000-memory.dmp

Filesize
600KB

Download
memory/1620-23-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/1620-60-0x0000000007990000-0x00000000079A4000-memory.dmp

Filesize
80KB

Download
memory/1620-59-0x0000000007980000-0x000000000798E000-memory.dmp

Filesize
56KB

Download
memory/2852-143-0x00000000002E0000-0x0000000000539000-memory.dmp

Filesize
2.3MB

Download
memory/2852-161-0x00000000002E0000-0x0000000000539000-memory.dmp

Filesize
2.3MB

Download
memory/3432-7-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3432-8-0x0000000005800000-0x0000000005866000-memory.dmp

Filesize
408KB

Download
memory/3432-10-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3432-9-0x0000000005870000-0x00000000058D6000-memory.dmp

Filesize
408KB

Download
memory/3432-69-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3432-21-0x0000000006730000-0x000000000674E000-memory.dmp

Filesize
120KB

Download
memory/3432-58-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3432-22-0x0000000006770000-0x00000000067BC000-memory.dmp

Filesize
304KB

Download
memory/3432-6-0x0000000005760000-0x0000000005782000-memory.dmp

Filesize
136KB

Download
memory/3432-5-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3432-4-0x0000000005A00000-0x0000000006028000-memory.dmp

Filesize
6.2MB

Download
memory/3432-20-0x0000000006130000-0x0000000006484000-memory.dmp

Filesize
3.3MB

Download
memory/3432-2-0x0000000002E00000-0x0000000002E36000-memory.dmp

Filesize
216KB

Download
memory/3748-79-0x0000000006020000-0x0000000006374000-memory.dmp

Filesize
3.3MB

Download