stealc | fa4f1c0b324654420f8758b8ab1d7e0db22f0eacbff0d2e14413ed904ca54aaf

Analysis

max time kernel
94s
max time network
145s
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, 21:40

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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
behavioral2/files/0x0010000000023c94-137.dat	family_vidar_v7
behavioral2/memory/1092-140-0x0000000000AB0000-0x0000000000D09000-memory.dmp	family_vidar_v7
behavioral2/memory/1092-159-0x0000000000AB0000-0x0000000000D09000-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
1980	powershell.exe
1856	powershell.exe
1388	powershell.exe
2988	powershell.exe
116	powershell.exe
5040	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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	TikTokDesktop18.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	cxAXPwJoi.exe

Executes dropped EXE 1 IoCs

pid	Process
1092	cxAXPwJoi.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
21	raw.githubusercontent.com
22	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	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	cxAXPwJoi.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	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

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4952	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1388	powershell.exe
1388	powershell.exe
2988	powershell.exe
2988	powershell.exe
116	powershell.exe
116	powershell.exe
5040	powershell.exe
5040	powershell.exe
1980	powershell.exe
1980	powershell.exe
1856	powershell.exe
1856	powershell.exe
1092	cxAXPwJoi.exe
1092	cxAXPwJoi.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3928	TikTokDesktop18.exe
Token: SeDebugPrivilege	1388	powershell.exe
Token: SeDebugPrivilege	2988	powershell.exe
Token: SeDebugPrivilege	116	powershell.exe
Token: SeDebugPrivilege	5040	powershell.exe
Token: SeDebugPrivilege	1980	powershell.exe
Token: SeDebugPrivilege	1856	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3928 wrote to memory of 1388	3928	TikTokDesktop18.exe	85
PID 3928 wrote to memory of 1388	3928	TikTokDesktop18.exe	85
PID 3928 wrote to memory of 1388	3928	TikTokDesktop18.exe	85
PID 1388 wrote to memory of 2988	1388	powershell.exe	87
PID 1388 wrote to memory of 2988	1388	powershell.exe	87
PID 1388 wrote to memory of 2988	1388	powershell.exe	87
PID 3928 wrote to memory of 116	3928	TikTokDesktop18.exe	88
PID 3928 wrote to memory of 116	3928	TikTokDesktop18.exe	88
PID 3928 wrote to memory of 116	3928	TikTokDesktop18.exe	88
PID 116 wrote to memory of 5040	116	powershell.exe	90
PID 116 wrote to memory of 5040	116	powershell.exe	90
PID 116 wrote to memory of 5040	116	powershell.exe	90
PID 3928 wrote to memory of 1980	3928	TikTokDesktop18.exe	91
PID 3928 wrote to memory of 1980	3928	TikTokDesktop18.exe	91
PID 3928 wrote to memory of 1980	3928	TikTokDesktop18.exe	91
PID 1980 wrote to memory of 1856	1980	powershell.exe	93
PID 1980 wrote to memory of 1856	1980	powershell.exe	93
PID 1980 wrote to memory of 1856	1980	powershell.exe	93
PID 3928 wrote to memory of 1092	3928	TikTokDesktop18.exe	96
PID 3928 wrote to memory of 1092	3928	TikTokDesktop18.exe	96
PID 3928 wrote to memory of 1092	3928	TikTokDesktop18.exe	96
PID 1092 wrote to memory of 3424	1092	cxAXPwJoi.exe	103
PID 1092 wrote to memory of 3424	1092	cxAXPwJoi.exe	103
PID 1092 wrote to memory of 3424	1092	cxAXPwJoi.exe	103
PID 3424 wrote to memory of 4952	3424	cmd.exe	105
PID 3424 wrote to memory of 4952	3424	cmd.exe	105
PID 3424 wrote to memory of 4952	3424	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:3928
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" powershell -Command "Add-MpPreference -ExclusionPath 'C:\Ec5GYeY1pm'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1388
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\Ec5GYeY1pm
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2988
- 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:116
- - 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:5040
- 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:1980
- - 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:1856
- C:\Ec5GYeY1pm\cxAXPwJoi.exe
  "C:\Ec5GYeY1pm\cxAXPwJoi.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:1092
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Ec5GYeY1pm\cxAXPwJoi.exe" & rd /s /q "C:\ProgramData\DBFHDHJKKJDH" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3424
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:4952

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:\Ec5GYeY1pm\cxAXPwJoi.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
9f1f77c9ae94ab2235d7479df86362ae

SHA1
6d51672ac3b72ea55b733d3e9c7e4341b6415ba1

SHA256
452cddc3df8512db1a846e30d41148b23eab1703a1aecd3c1dfa2a9126c02ff5

SHA512
76dad43a2ec6ccec99d3c9a01539daae7a8cfe9612ed82feb2dc38d0c0449d4d01ac676097a2a24162a8b07921f972b3cfaf3d817c3788256d3b4fcc1bed36f3

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

Filesize
11KB

MD5
3fa95cbb9e8c970be9e23ff5b987a0ee

SHA1
a78bcce2d4e14beafcba36a1950fb68b0bbdaab7

SHA256
d23bb14c71ef67bc3f0357b2e62a9ba99c27e7a2a5f131cebbc0e9fed76359b0

SHA512
968288d206c4572e0687c0315b53ddbb833bc68b75e9b28ec0b2a4a072cb66a605be3555abf781ecc5f705b3ae5e4380b68971331306052c11cd24136786bc19

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

Filesize
11KB

MD5
069f418c10dc5d48e4a71d664db4d045

SHA1
5470b7395351b43da277c4f0f91a242ba0cad765

SHA256
1e7851aa176aa2361fc305ad33445710637acca90cf78154b1f3f77dd93324b6

SHA512
05b0bc6f50683787264bcf573dfca0304dd9d057f8236d79dfa93627ebde74071270f901cfa0cfadefd5780c71e58718f6842012a7cfdc3cbbe59e61f905314a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sfrm3ojz.f3a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/116-75-0x0000000005C70000-0x0000000005FC4000-memory.dmp

Filesize
3.3MB

Download
memory/1092-159-0x0000000000AB0000-0x0000000000D09000-memory.dmp

Filesize
2.3MB

Download
memory/1092-140-0x0000000000AB0000-0x0000000000D09000-memory.dmp

Filesize
2.3MB

Download
memory/1388-65-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/1388-7-0x0000000005420000-0x0000000005442000-memory.dmp

Filesize
136KB

Download
memory/1388-15-0x0000000005BA0000-0x0000000005C06000-memory.dmp

Filesize
408KB

Download
memory/1388-20-0x0000000005D90000-0x00000000060E4000-memory.dmp

Filesize
3.3MB

Download
memory/1388-21-0x0000000006400000-0x000000000641E000-memory.dmp

Filesize
120KB

Download
memory/1388-22-0x0000000006430000-0x000000000647C000-memory.dmp

Filesize
304KB

Download
memory/1388-3-0x0000000002B10000-0x0000000002B46000-memory.dmp

Filesize
216KB

Download
memory/1388-4-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/1388-6-0x0000000005500000-0x0000000005B28000-memory.dmp

Filesize
6.2MB

Download
memory/1388-14-0x0000000005B30000-0x0000000005B96000-memory.dmp

Filesize
408KB

Download
memory/1388-5-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/1388-8-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/1856-120-0x0000000070AD0000-0x0000000070B1C000-memory.dmp

Filesize
304KB

Download
memory/2988-48-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/2988-37-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/2988-51-0x0000000007A20000-0x0000000007A3A000-memory.dmp

Filesize
104KB

Download
memory/2988-50-0x0000000008060000-0x00000000086DA000-memory.dmp

Filesize
6.5MB

Download
memory/2988-52-0x0000000007A90000-0x0000000007A9A000-memory.dmp

Filesize
40KB

Download
memory/2988-53-0x0000000007CA0000-0x0000000007D36000-memory.dmp

Filesize
600KB

Download
memory/2988-54-0x0000000007C20000-0x0000000007C31000-memory.dmp

Filesize
68KB

Download
memory/2988-55-0x0000000007C50000-0x0000000007C5E000-memory.dmp

Filesize
56KB

Download
memory/2988-56-0x0000000007C60000-0x0000000007C74000-memory.dmp

Filesize
80KB

Download
memory/2988-57-0x0000000007D60000-0x0000000007D7A000-memory.dmp

Filesize
104KB

Download
memory/2988-58-0x0000000007D40000-0x0000000007D48000-memory.dmp

Filesize
32KB

Download
memory/2988-61-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/2988-36-0x0000000070AD0000-0x0000000070B1C000-memory.dmp

Filesize
304KB

Download
memory/2988-35-0x00000000078B0000-0x00000000078E2000-memory.dmp

Filesize
200KB

Download
memory/2988-23-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/2988-49-0x00000000078F0000-0x0000000007993000-memory.dmp

Filesize
652KB

Download
memory/2988-24-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/2988-34-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/2988-47-0x0000000007870000-0x000000000788E000-memory.dmp

Filesize
120KB

Download
memory/3928-119-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/3928-96-0x0000000074CDE000-0x0000000074CDF000-memory.dmp

Filesize
4KB

Download
memory/3928-0-0x0000000074CDE000-0x0000000074CDF000-memory.dmp

Filesize
4KB

Download
memory/3928-2-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/3928-145-0x0000000074CD0000-0x0000000075480000-memory.dmp

Filesize
7.7MB

Download
memory/3928-1-0x0000000000BE0000-0x0000000001DCA000-memory.dmp

Filesize
17.9MB

Download
memory/5040-86-0x0000000070AD0000-0x0000000070B1C000-memory.dmp

Filesize
304KB

Download