stealc | 12ca4ad8cd613c8d086cd39a5c6e787c12209f2271ba850817b72eae3cd559da

Analysis

max time kernel
149s
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 21:16

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General

Target

TikTokDesktop18.exe
Size

17.9MB
MD5

81f6b6fe3201c3941bd49243c5896811
SHA1

8bd0d5bb78255fc9f2dcf70fde14dba16c66551c
SHA256

fa4f1c0b324654420f8758b8ab1d7e0db22f0eacbff0d2e14413ed904ca54aaf
SHA512

f3d22c84fb70a2c851f533037b74c45248b9074aa3042371672c89c3ee5229bbdbbc193e54840adbc5f17672430fbbc0b94dd12c8014f3a3ec93fece24e54d4f
SSDEEP

393216:7bbTRUBXu2+WlsaxtBXu2+WlsaxtBXu2+WlsaxtBXu2+Wlsax:7PKBX4mtfBX4mtfBX4mtfBX4mt

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
behavioral4/files/0x0009000000023ca2-140.dat	family_vidar_v7
behavioral4/memory/1200-146-0x0000000000020000-0x0000000000279000-memory.dmp	family_vidar_v7
behavioral4/memory/1200-162-0x0000000000020000-0x0000000000279000-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
660	powershell.exe
2148	powershell.exe
4744	powershell.exe
2564	powershell.exe
1060	powershell.exe
4532	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:

TikTokDesktop18.exeBcWtzbXJDP.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	TikTokDesktop18.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	BcWtzbXJDP.exe

Executes dropped EXE 1 IoCs

Processes:

BcWtzbXJDP.exe

pid	Process
1200	BcWtzbXJDP.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
23	raw.githubusercontent.com
24	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.exeBcWtzbXJDP.execmd.exeTikTokDesktop18.exepowershell.exepowershell.exepowershell.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	BcWtzbXJDP.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TikTokDesktop18.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	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:

BcWtzbXJDP.exe

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

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
3492	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

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

pid	Process
4532	powershell.exe
4532	powershell.exe
660	powershell.exe
660	powershell.exe
2148	powershell.exe
2148	powershell.exe
4744	powershell.exe
4744	powershell.exe
2564	powershell.exe
2564	powershell.exe
1060	powershell.exe
1060	powershell.exe
1200	BcWtzbXJDP.exe
1200	BcWtzbXJDP.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

TikTokDesktop18.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	2452	TikTokDesktop18.exe
Token: SeDebugPrivilege	4532	powershell.exe
Token: SeDebugPrivilege	660	powershell.exe
Token: SeDebugPrivilege	2148	powershell.exe
Token: SeDebugPrivilege	4744	powershell.exe
Token: SeDebugPrivilege	2564	powershell.exe
Token: SeDebugPrivilege	1060	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

TikTokDesktop18.exepowershell.exepowershell.exepowershell.exeBcWtzbXJDP.execmd.exe

description	pid	Process	procid_target
PID 2452 wrote to memory of 4532	2452	TikTokDesktop18.exe	84
PID 2452 wrote to memory of 4532	2452	TikTokDesktop18.exe	84
PID 2452 wrote to memory of 4532	2452	TikTokDesktop18.exe	84
PID 4532 wrote to memory of 660	4532	powershell.exe	86
PID 4532 wrote to memory of 660	4532	powershell.exe	86
PID 4532 wrote to memory of 660	4532	powershell.exe	86
PID 2452 wrote to memory of 2148	2452	TikTokDesktop18.exe	93
PID 2452 wrote to memory of 2148	2452	TikTokDesktop18.exe	93
PID 2452 wrote to memory of 2148	2452	TikTokDesktop18.exe	93
PID 2148 wrote to memory of 4744	2148	powershell.exe	95
PID 2148 wrote to memory of 4744	2148	powershell.exe	95
PID 2148 wrote to memory of 4744	2148	powershell.exe	95
PID 2452 wrote to memory of 2564	2452	TikTokDesktop18.exe	98
PID 2452 wrote to memory of 2564	2452	TikTokDesktop18.exe	98
PID 2452 wrote to memory of 2564	2452	TikTokDesktop18.exe	98
PID 2564 wrote to memory of 1060	2564	powershell.exe	103
PID 2564 wrote to memory of 1060	2564	powershell.exe	103
PID 2564 wrote to memory of 1060	2564	powershell.exe	103
PID 2452 wrote to memory of 1200	2452	TikTokDesktop18.exe	105
PID 2452 wrote to memory of 1200	2452	TikTokDesktop18.exe	105
PID 2452 wrote to memory of 1200	2452	TikTokDesktop18.exe	105
PID 1200 wrote to memory of 3720	1200	BcWtzbXJDP.exe	110
PID 1200 wrote to memory of 3720	1200	BcWtzbXJDP.exe	110
PID 1200 wrote to memory of 3720	1200	BcWtzbXJDP.exe	110
PID 3720 wrote to memory of 3492	3720	cmd.exe	112
PID 3720 wrote to memory of 3492	3720	cmd.exe	112
PID 3720 wrote to memory of 3492	3720	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\TikTokDesktop18.exe
"C:\Users\Admin\AppData\Local\Temp\TikTokDesktop18.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" powershell -Command "Add-MpPreference -ExclusionPath 'C:\fqMaqbsda'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4532
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\fqMaqbsda
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:660
- 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:2148
- - 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:4744
- 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:2564
- - 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:1060
- C:\fqMaqbsda\BcWtzbXJDP.exe
  "C:\fqMaqbsda\BcWtzbXJDP.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:1200
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\fqMaqbsda\BcWtzbXJDP.exe" & rd /s /q "C:\ProgramData\BKKKEGIDBGHI" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3720
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:3492

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
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

Filesize
11KB

MD5
53f63c306097469147638e780bf448e9

SHA1
4631e6619119c03e7bf74dd022883106c6a32094

SHA256
2483abeebf89f06f2144306973f66df38bc0baced7cd12469eae5115ac0f30c1

SHA512
f37d2768b5f189e05971bbe57e71cbda326f7b5be22f7af3049db4428553a3ad156bd122e461a7398e1f559b3c1b64f3f36bcd2061b2c9e9d5e254dec6cde824

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

Filesize
11KB

MD5
6fc05c98073908cb02d2a734c7b1b5ff

SHA1
7a96332b78af533e98b971d45a16fd2c234995f4

SHA256
f27e30318ed70913541a4eafa5620b9f323700b1017252defd5c4ae5ca90f095

SHA512
e2e26c32bd488eb6e9f9559b1fcab46f70ad488f9b80824076012a9750d846e482136d3758b10bfc131643975bf06af2b4e062468840b1287fff8ce5d7f50306

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

Filesize
11KB

MD5
d2fdd4a60984c211a843de1a758bdace

SHA1
3144015fde9ba501623e4afd55d5a1afff1e39a4

SHA256
0d19b1241bf6f545e4a359f276dc1a60cd410d9fb6fdddd3ee386f79a4083187

SHA512
64ab3a0923dbf49eb6fece689e84148212b33c75a245836f4ae2abc8141f0f108514c51b2255c20d83894ff29bff942a7f53b211d6deb6243dba87e10960f2ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kqxpcjmp.ton.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\fqMaqbsda\BcWtzbXJDP.exe

Filesize
275KB

MD5
0a7b3454fdad8431bd3523648c915665

SHA1
800a97a7c1a92a92cac76afc1fe5349895ee5287

SHA256
baf217d7bb8f3a86856def6891638318a94ed5d7082149d4dd4cb755d90d86ce

SHA512
020e45eaeee083d6739155d9a821ab54dd07f1320b8efb73871ee5d29188122fdbb7d39b34a8b3694a8b0c08ae1801ec370e40ff8d837c9190a72905f26baff9

Download Submit
memory/660-35-0x00000000073A0000-0x00000000073D2000-memory.dmp

Filesize
200KB

Download
memory/660-25-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/660-55-0x0000000007990000-0x0000000007A26000-memory.dmp

Filesize
600KB

Download
memory/660-54-0x0000000007780000-0x000000000778A000-memory.dmp

Filesize
40KB

Download
memory/660-65-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/660-57-0x0000000007940000-0x000000000794E000-memory.dmp

Filesize
56KB

Download
memory/660-60-0x0000000007A30000-0x0000000007A38000-memory.dmp

Filesize
32KB

Download
memory/660-59-0x0000000007A50000-0x0000000007A6A000-memory.dmp

Filesize
104KB

Download
memory/660-58-0x0000000007950000-0x0000000007964000-memory.dmp

Filesize
80KB

Download
memory/660-23-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/660-24-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/660-51-0x0000000007D50000-0x00000000083CA000-memory.dmp

Filesize
6.5MB

Download
memory/660-47-0x0000000006960000-0x000000000697E000-memory.dmp

Filesize
120KB

Download
memory/660-42-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/660-36-0x0000000070E30000-0x0000000070E7C000-memory.dmp

Filesize
304KB

Download
memory/660-56-0x0000000007910000-0x0000000007921000-memory.dmp

Filesize
68KB

Download
memory/660-48-0x00000000075E0000-0x0000000007683000-memory.dmp

Filesize
652KB

Download
memory/660-49-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/660-50-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/660-52-0x0000000007710000-0x000000000772A000-memory.dmp

Filesize
104KB

Download
memory/1060-123-0x0000000070E30000-0x0000000070E7C000-memory.dmp

Filesize
304KB

Download
memory/1200-162-0x0000000000020000-0x0000000000279000-memory.dmp

Filesize
2.3MB

Download
memory/1200-146-0x0000000000020000-0x0000000000279000-memory.dmp

Filesize
2.3MB

Download
memory/2148-79-0x0000000005FE0000-0x0000000006334000-memory.dmp

Filesize
3.3MB

Download
memory/2452-61-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/2452-53-0x000000007503E000-0x000000007503F000-memory.dmp

Filesize
4KB

Download
memory/2452-1-0x00000000006E0000-0x00000000018CA000-memory.dmp

Filesize
17.9MB

Download
memory/2452-148-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/2452-2-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/2452-0-0x000000007503E000-0x000000007503F000-memory.dmp

Filesize
4KB

Download
memory/2564-108-0x0000000006190000-0x00000000064E4000-memory.dmp

Filesize
3.3MB

Download
memory/4532-7-0x00000000057D0000-0x00000000057F2000-memory.dmp

Filesize
136KB

Download
memory/4532-62-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/4532-13-0x0000000005870000-0x00000000058D6000-memory.dmp

Filesize
408KB

Download
memory/4532-69-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/4532-14-0x0000000006170000-0x00000000061D6000-memory.dmp

Filesize
408KB

Download
memory/4532-22-0x00000000067D0000-0x000000000681C000-memory.dmp

Filesize
304KB

Download
memory/4532-6-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/4532-15-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/4532-5-0x0000000005990000-0x0000000005FB8000-memory.dmp

Filesize
6.2MB

Download
memory/4532-4-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/4532-3-0x0000000002EA0000-0x0000000002ED6000-memory.dmp

Filesize
216KB

Download
memory/4532-17-0x00000000061E0000-0x0000000006534000-memory.dmp

Filesize
3.3MB

Download
memory/4532-21-0x00000000067B0000-0x00000000067CE000-memory.dmp

Filesize
120KB

Download
memory/4744-90-0x0000000070E30000-0x0000000070E7C000-memory.dmp

Filesize
304KB

Download