stealc | 12ca4ad8cd613c8d086cd39a5c6e787c12209f2271ba850817b72eae3cd559da

Analysis

max time kernel
93s
max time network
150s
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

TTDesktop18.exe
Size

13KB
MD5

22bded153b8c1ec4b1d1b45e0467f7c6
SHA1

1c8825442a455da9ffa0fd56e0e2848dfa58bf2c
SHA256

f07f39ca504a15d670eecad52c272ed5cdc4025fede61cd910d7da2a55d1d052
SHA512

f6022cbf7120e1771e7ba992bcd59ba5f8f68507d91c10c997a3186766547ea0632347facfdec667c3bde261748eb93ee8df35c71600fd7c459539f629b408bb
SSDEEP

192:0qgaiJUFTQcHVPtAXjJ9vT2O3yP8B50LOZdBcmCEJXVWwTnkVOvQu:57zFEcH769vT2OCkB50LknnVTnkVUQ

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
behavioral3/files/0x000b000000023b87-138.dat	family_vidar_v7
behavioral3/memory/2624-145-0x0000000000CC0000-0x0000000000F19000-memory.dmp	family_vidar_v7
behavioral3/memory/2624-160-0x0000000000CC0000-0x0000000000F19000-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
3576	powershell.exe
3236	powershell.exe
3568	powershell.exe
2088	powershell.exe
432	powershell.exe
2192	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:

MldTXTNaGR.exeTTDesktop18.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	MldTXTNaGR.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	TTDesktop18.exe

Executes dropped EXE 1 IoCs

Processes:

MldTXTNaGR.exe

pid	Process
2624	MldTXTNaGR.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
16	raw.githubusercontent.com
17	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.exetimeout.exepowershell.exepowershell.exepowershell.exeMldTXTNaGR.execmd.exeTTDesktop18.exepowershell.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	timeout.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	MldTXTNaGR.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TTDesktop18.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

Processes:

MldTXTNaGR.exe

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

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
3660	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

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

pid	Process
2088	powershell.exe
2088	powershell.exe
432	powershell.exe
432	powershell.exe
2192	powershell.exe
2192	powershell.exe
3576	powershell.exe
3576	powershell.exe
3236	powershell.exe
3236	powershell.exe
3568	powershell.exe
3568	powershell.exe
2624	MldTXTNaGR.exe
2624	MldTXTNaGR.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeTTDesktop18.exe

description	pid	Process
Token: SeDebugPrivilege	2088	powershell.exe
Token: SeDebugPrivilege	432	powershell.exe
Token: SeDebugPrivilege	2192	powershell.exe
Token: SeDebugPrivilege	3576	powershell.exe
Token: SeDebugPrivilege	3236	powershell.exe
Token: SeDebugPrivilege	3568	powershell.exe
Token: SeDebugPrivilege	3184	TTDesktop18.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

TTDesktop18.exepowershell.exepowershell.exepowershell.exeMldTXTNaGR.execmd.exe

description	pid	Process	procid_target
PID 3184 wrote to memory of 2088	3184	TTDesktop18.exe	84
PID 3184 wrote to memory of 2088	3184	TTDesktop18.exe	84
PID 3184 wrote to memory of 2088	3184	TTDesktop18.exe	84
PID 2088 wrote to memory of 432	2088	powershell.exe	86
PID 2088 wrote to memory of 432	2088	powershell.exe	86
PID 2088 wrote to memory of 432	2088	powershell.exe	86
PID 3184 wrote to memory of 2192	3184	TTDesktop18.exe	87
PID 3184 wrote to memory of 2192	3184	TTDesktop18.exe	87
PID 3184 wrote to memory of 2192	3184	TTDesktop18.exe	87
PID 2192 wrote to memory of 3576	2192	powershell.exe	89
PID 2192 wrote to memory of 3576	2192	powershell.exe	89
PID 2192 wrote to memory of 3576	2192	powershell.exe	89
PID 3184 wrote to memory of 3236	3184	TTDesktop18.exe	92
PID 3184 wrote to memory of 3236	3184	TTDesktop18.exe	92
PID 3184 wrote to memory of 3236	3184	TTDesktop18.exe	92
PID 3236 wrote to memory of 3568	3236	powershell.exe	97
PID 3236 wrote to memory of 3568	3236	powershell.exe	97
PID 3236 wrote to memory of 3568	3236	powershell.exe	97
PID 3184 wrote to memory of 2624	3184	TTDesktop18.exe	105
PID 3184 wrote to memory of 2624	3184	TTDesktop18.exe	105
PID 3184 wrote to memory of 2624	3184	TTDesktop18.exe	105
PID 2624 wrote to memory of 4944	2624	MldTXTNaGR.exe	110
PID 2624 wrote to memory of 4944	2624	MldTXTNaGR.exe	110
PID 2624 wrote to memory of 4944	2624	MldTXTNaGR.exe	110
PID 4944 wrote to memory of 3660	4944	cmd.exe	112
PID 4944 wrote to memory of 3660	4944	cmd.exe	112
PID 4944 wrote to memory of 3660	4944	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\TTDesktop18.exe
"C:\Users\Admin\AppData\Local\Temp\TTDesktop18.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3184
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" powershell -Command "Add-MpPreference -ExclusionPath 'C:\PrcIlTFIMt'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2088
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\PrcIlTFIMt
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:432
- 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:2192
- - 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:3576
- 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:3236
- - 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:3568
- C:\PrcIlTFIMt\MldTXTNaGR.exe
  "C:\PrcIlTFIMt\MldTXTNaGR.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:2624
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\PrcIlTFIMt\MldTXTNaGR.exe" & rd /s /q "C:\ProgramData\BFBGDGIDBAAE" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4944
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:3660

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:\PrcIlTFIMt\MldTXTNaGR.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
7bcdfe5f2004f48c0a889948e57083a8

SHA1
91fefe40244a79403fc14e892013fe1d12823b7c

SHA256
ced07e304932c0679a9c9959e86c82542e6ba87caefe10194df47533a792ebcf

SHA512
a16b618b5adfb9e7672aa4b3cf55bd2cf2f295ab6e86e171a57ae876be5ce3837bce673172a7a6726ef010e6cd57b8c055df1d1d8355f5da3f09b9db9e043a53

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

Filesize
11KB

MD5
fe5ecac9fa0d87b3469d4a53487d469b

SHA1
0e3d7a399e837c6cf671beb775d8d539d0b6ebc1

SHA256
1500e90dfe2b1b122c7793a76a3f5cc99704c1f4ff8f8af4d04920b3631f3175

SHA512
d7b6acfe40fa68ff1229b4f523cc5975fa1f7f643cfd589283483fecf3b467105d2c3cb4d5b98c3a1b5a0ab915f7a4f868c353eb5c6a2436219c296171218c99

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

Filesize
11KB

MD5
41fa6d82bbe6c805242f6652e395cb91

SHA1
d21db7084933ccdbdb64ebc9d0c9ffab3a3ec8c2

SHA256
ea913c790788298a3987287326caac174e867fbf5da6e1fcc65d6f770ed7c4f2

SHA512
4a3bdf7da78b21c4f35f514ad946f439c51a19e537bdee5676ed885a0c93ef8a3de446a33d899366d52ba89f8bc7d3e0607813d08d72a5341b720fd041e57430

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nh1zecfn.52a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/432-50-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/432-52-0x00000000079B0000-0x00000000079CA000-memory.dmp

Filesize
104KB

Download
memory/432-62-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/432-58-0x0000000007CF0000-0x0000000007D0A000-memory.dmp

Filesize
104KB

Download
memory/432-59-0x0000000007CD0000-0x0000000007CD8000-memory.dmp

Filesize
32KB

Download
memory/432-57-0x0000000007BF0000-0x0000000007C04000-memory.dmp

Filesize
80KB

Download
memory/432-56-0x0000000007BE0000-0x0000000007BEE000-memory.dmp

Filesize
56KB

Download
memory/432-55-0x0000000007BB0000-0x0000000007BC1000-memory.dmp

Filesize
68KB

Download
memory/432-22-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/432-23-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/432-33-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/432-54-0x0000000007C30000-0x0000000007CC6000-memory.dmp

Filesize
600KB

Download
memory/432-36-0x0000000070EB0000-0x0000000070EFC000-memory.dmp

Filesize
304KB

Download
memory/432-35-0x0000000007640000-0x0000000007672000-memory.dmp

Filesize
200KB

Download
memory/432-47-0x0000000006C60000-0x0000000006C7E000-memory.dmp

Filesize
120KB

Download
memory/432-46-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/432-49-0x0000000007880000-0x0000000007923000-memory.dmp

Filesize
652KB

Download
memory/432-48-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/432-53-0x0000000007A20000-0x0000000007A2A000-memory.dmp

Filesize
40KB

Download
memory/432-51-0x0000000007FF0000-0x000000000866A000-memory.dmp

Filesize
6.5MB

Download
memory/2088-3-0x0000000004E20000-0x0000000005448000-memory.dmp

Filesize
6.2MB

Download
memory/2088-7-0x0000000004D20000-0x0000000004D42000-memory.dmp

Filesize
136KB

Download
memory/2088-2-0x0000000004630000-0x0000000004666000-memory.dmp

Filesize
216KB

Download
memory/2088-21-0x0000000005C10000-0x0000000005C5C000-memory.dmp

Filesize
304KB

Download
memory/2088-20-0x0000000005BE0000-0x0000000005BFE000-memory.dmp

Filesize
120KB

Download
memory/2088-19-0x00000000055E0000-0x0000000005934000-memory.dmp

Filesize
3.3MB

Download
memory/2088-9-0x0000000005570000-0x00000000055D6000-memory.dmp

Filesize
408KB

Download
memory/2088-6-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/2088-8-0x0000000005450000-0x00000000054B6000-memory.dmp

Filesize
408KB

Download
memory/2088-66-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/2088-5-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/2088-4-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/2192-76-0x00000000058B0000-0x0000000005C04000-memory.dmp

Filesize
3.3MB

Download
memory/2624-145-0x0000000000CC0000-0x0000000000F19000-memory.dmp

Filesize
2.3MB

Download
memory/2624-160-0x0000000000CC0000-0x0000000000F19000-memory.dmp

Filesize
2.3MB

Download
memory/3184-0-0x00000000750BE000-0x00000000750BF000-memory.dmp

Filesize
4KB

Download
memory/3184-34-0x00000000750BE000-0x00000000750BF000-memory.dmp

Filesize
4KB

Download
memory/3184-133-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/3184-1-0x00000000003C0000-0x00000000003CA000-memory.dmp

Filesize
40KB

Download
memory/3184-146-0x00000000750B0000-0x0000000075860000-memory.dmp

Filesize
7.7MB

Download
memory/3236-109-0x0000000005C60000-0x0000000005FB4000-memory.dmp

Filesize
3.3MB

Download
memory/3568-120-0x0000000070EB0000-0x0000000070EFC000-memory.dmp

Filesize
304KB

Download
memory/3576-87-0x0000000070EB0000-0x0000000070EFC000-memory.dmp

Filesize
304KB

Download