stealc | 12ca4ad8cd613c8d086cd39a5c6e787c12209f2271ba850817b72eae3cd559da

Analysis

max time kernel
149s
max time network
151s
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

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

resource	yara_rule
behavioral18/files/0x0013000000023b87-138.dat	family_vidar_v7
behavioral18/memory/3372-142-0x0000000000F00000-0x0000000001159000-memory.dmp	family_vidar_v7
behavioral18/memory/3372-160-0x0000000000F00000-0x0000000001159000-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
2348	powershell.exe
1168	powershell.exe
4776	powershell.exe
3744	powershell.exe
1360	powershell.exe
2728	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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	sb8xgEGL.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	TikTokDesktop18.exe

Executes dropped EXE 1 IoCs

pid	Process
3372	sb8xgEGL.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
18	raw.githubusercontent.com
19	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	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	timeout.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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sb8xgEGL.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	sb8xgEGL.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	sb8xgEGL.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1568	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2348	powershell.exe
2348	powershell.exe
1168	powershell.exe
1168	powershell.exe
4776	powershell.exe
4776	powershell.exe
3744	powershell.exe
3744	powershell.exe
1360	powershell.exe
1360	powershell.exe
2728	powershell.exe
2728	powershell.exe
3372	sb8xgEGL.exe
3372	sb8xgEGL.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2672	TikTokDesktop18.exe
Token: SeDebugPrivilege	2348	powershell.exe
Token: SeDebugPrivilege	1168	powershell.exe
Token: SeDebugPrivilege	4776	powershell.exe
Token: SeDebugPrivilege	3744	powershell.exe
Token: SeDebugPrivilege	1360	powershell.exe
Token: SeDebugPrivilege	2728	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2348	2672	TikTokDesktop18.exe	84
PID 2672 wrote to memory of 2348	2672	TikTokDesktop18.exe	84
PID 2672 wrote to memory of 2348	2672	TikTokDesktop18.exe	84
PID 2348 wrote to memory of 1168	2348	powershell.exe	86
PID 2348 wrote to memory of 1168	2348	powershell.exe	86
PID 2348 wrote to memory of 1168	2348	powershell.exe	86
PID 2672 wrote to memory of 4776	2672	TikTokDesktop18.exe	87
PID 2672 wrote to memory of 4776	2672	TikTokDesktop18.exe	87
PID 2672 wrote to memory of 4776	2672	TikTokDesktop18.exe	87
PID 4776 wrote to memory of 3744	4776	powershell.exe	89
PID 4776 wrote to memory of 3744	4776	powershell.exe	89
PID 4776 wrote to memory of 3744	4776	powershell.exe	89
PID 2672 wrote to memory of 1360	2672	TikTokDesktop18.exe	92
PID 2672 wrote to memory of 1360	2672	TikTokDesktop18.exe	92
PID 2672 wrote to memory of 1360	2672	TikTokDesktop18.exe	92
PID 1360 wrote to memory of 2728	1360	powershell.exe	94
PID 1360 wrote to memory of 2728	1360	powershell.exe	94
PID 1360 wrote to memory of 2728	1360	powershell.exe	94
PID 2672 wrote to memory of 3372	2672	TikTokDesktop18.exe	97
PID 2672 wrote to memory of 3372	2672	TikTokDesktop18.exe	97
PID 2672 wrote to memory of 3372	2672	TikTokDesktop18.exe	97
PID 3372 wrote to memory of 1104	3372	sb8xgEGL.exe	103
PID 3372 wrote to memory of 1104	3372	sb8xgEGL.exe	103
PID 3372 wrote to memory of 1104	3372	sb8xgEGL.exe	103
PID 1104 wrote to memory of 1568	1104	cmd.exe	105
PID 1104 wrote to memory of 1568	1104	cmd.exe	105
PID 1104 wrote to memory of 1568	1104	cmd.exe	105

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:2672
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" powershell -Command "Add-MpPreference -ExclusionPath 'C:\I75uuz4O'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2348
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\I75uuz4O
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1168
- 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:4776
- - 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:3744
- 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:1360
- - 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:2728
- C:\I75uuz4O\sb8xgEGL.exe
  "C:\I75uuz4O\sb8xgEGL.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:3372
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\I75uuz4O\sb8xgEGL.exe" & rd /s /q "C:\ProgramData\EBAAAFBGDBKK" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1104
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1568

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

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Downloads

C:\I75uuz4O\sb8xgEGL.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
36d11604e54b0d46235cb6c4f3a34f70

SHA1
d30709ea52b785d71cced902b442e0ca4f7600f4

SHA256
e60963d9af9155889c1ac01a018214db908a368fcb2d2a2872ca04d1a4e03d27

SHA512
49965be356eb5c3004b3c30275b4294252ec7500330fd452d9edb3cd316f9cf4ec81a7327e02904223d51b11a87949fe6a6febef6a9ed33be30a1af40554eeb0

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

Filesize
11KB

MD5
59ca5461a744b98f27d403f27e3f49b4

SHA1
868a034b8ffc01780bdee516c6117996c4fb59c6

SHA256
eee3136a582c3c23b2b05ade1b2dbda3f0058f219b53da94b0388ff54ea73a1c

SHA512
cbc26c84e0a7041262b65e19484955773ce6cd3a3af2f7e915fd08f4489fb853b81a187d7e2ad437c2d85941177d487231a1b787628cbfd34385bdd3704ec859

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

Filesize
11KB

MD5
8db742679d92e1f953bfc4177be55f28

SHA1
a03491e653b4bdfa872d570778d79a91ac499a7c

SHA256
4264d151dcdbee12a147254bf2b9ce009bd8d09182be1da5f2b64744b75474d0

SHA512
0c7d57bec1c786eaa1a5fdf596c807a3ee3e3111eea022c342c3ee8d87920cd4bdbd7248fa160e8120724be533cbe249b8325bb9b50d40ddb635e04625baea82

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nxgau4gl.ksk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1168-55-0x0000000006F70000-0x0000000006F81000-memory.dmp

Filesize
68KB

Download
memory/1168-23-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/1168-58-0x00000000070B0000-0x00000000070CA000-memory.dmp

Filesize
104KB

Download
memory/1168-57-0x0000000006FB0000-0x0000000006FC4000-memory.dmp

Filesize
80KB

Download
memory/1168-56-0x0000000006FA0000-0x0000000006FAE000-memory.dmp

Filesize
56KB

Download
memory/1168-62-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/1168-51-0x00000000073B0000-0x0000000007A2A000-memory.dmp

Filesize
6.5MB

Download
memory/1168-54-0x0000000006FF0000-0x0000000007086000-memory.dmp

Filesize
600KB

Download
memory/1168-53-0x0000000006DE0000-0x0000000006DEA000-memory.dmp

Filesize
40KB

Download
memory/1168-59-0x0000000007090000-0x0000000007098000-memory.dmp

Filesize
32KB

Download
memory/1168-33-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/1168-34-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/1168-35-0x0000000006C10000-0x0000000006C42000-memory.dmp

Filesize
200KB

Download
memory/1168-47-0x0000000006020000-0x000000000603E000-memory.dmp

Filesize
120KB

Download
memory/1168-48-0x0000000006C50000-0x0000000006CF3000-memory.dmp

Filesize
652KB

Download
memory/1168-49-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/1168-37-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/1168-50-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/1168-36-0x0000000070BA0000-0x0000000070BEC000-memory.dmp

Filesize
304KB

Download
memory/1168-52-0x0000000006D70000-0x0000000006D8A000-memory.dmp

Filesize
104KB

Download
memory/2348-20-0x0000000005BF0000-0x0000000005F44000-memory.dmp

Filesize
3.3MB

Download
memory/2348-4-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/2348-21-0x00000000061F0000-0x000000000620E000-memory.dmp

Filesize
120KB

Download
memory/2348-3-0x00000000028C0000-0x00000000028F6000-memory.dmp

Filesize
216KB

Download
memory/2348-10-0x0000000005A40000-0x0000000005AA6000-memory.dmp

Filesize
408KB

Download
memory/2348-9-0x00000000052D0000-0x0000000005336000-memory.dmp

Filesize
408KB

Download
memory/2348-8-0x0000000005230000-0x0000000005252000-memory.dmp

Filesize
136KB

Download
memory/2348-7-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/2348-5-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/2348-6-0x00000000053A0000-0x00000000059C8000-memory.dmp

Filesize
6.2MB

Download
memory/2348-66-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/2348-22-0x0000000006280000-0x00000000062CC000-memory.dmp

Filesize
304KB

Download
memory/2672-0-0x0000000074DAE000-0x0000000074DAF000-memory.dmp

Filesize
4KB

Download
memory/2672-99-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/2672-97-0x0000000074DAE000-0x0000000074DAF000-memory.dmp

Filesize
4KB

Download
memory/2672-2-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/2672-1-0x00000000003C0000-0x00000000015AA000-memory.dmp

Filesize
17.9MB

Download
memory/2672-146-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/2728-121-0x0000000070BA0000-0x0000000070BEC000-memory.dmp

Filesize
304KB

Download
memory/3372-142-0x0000000000F00000-0x0000000001159000-memory.dmp

Filesize
2.3MB

Download
memory/3372-160-0x0000000000F00000-0x0000000001159000-memory.dmp

Filesize
2.3MB

Download
memory/3744-87-0x0000000070BA0000-0x0000000070BEC000-memory.dmp

Filesize
304KB

Download
memory/4776-67-0x0000000005CF0000-0x0000000006044000-memory.dmp

Filesize
3.3MB

Download