stealc | fc77e5bdbc74120a3003bac0021871ccf74a182ce068aece06a7acf00363810c

Analysis

max time kernel
149s
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
05-12-2024 17:17

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General

Target

InstalIеr-x86/TTDesktop18.exe
Size

26.0MB
MD5

13eb2bb3303156d695ecf3f2b2c09eb7
SHA1

db1f2877681d02201c6c9d71d8c52a872c3612b9
SHA256

8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b
SHA512

6f44a7f1612f0eb4843c1e0de757a03f53d2b14e7aa8b7f983c2ca9baf0701d30f129edeab9c889655840782a1289fb4d0bf0699223e3c584afdaa4ee5172172
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

resource	yara_rule
behavioral8/files/0x0014000000023b9c-137.dat	family_vidar_v7
behavioral8/memory/984-140-0x00000000008F0000-0x0000000000B49000-memory.dmp	family_vidar_v7
behavioral8/memory/984-159-0x00000000008F0000-0x0000000000B49000-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
4720	powershell.exe
2136	powershell.exe
1864	powershell.exe
2180	powershell.exe
1416	powershell.exe
2472	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	TTDesktop18.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	jRpXOFwnw.exe

Executes dropped EXE 1 IoCs

pid	Process
984	jRpXOFwnw.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
22	raw.githubusercontent.com
23	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TTDesktop18.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	jRpXOFwnw.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	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

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3816	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1416	powershell.exe
1416	powershell.exe
2472	powershell.exe
2472	powershell.exe
4720	powershell.exe
4720	powershell.exe
2136	powershell.exe
2136	powershell.exe
1864	powershell.exe
1864	powershell.exe
2180	powershell.exe
2180	powershell.exe
984	jRpXOFwnw.exe
984	jRpXOFwnw.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1416	powershell.exe
Token: SeDebugPrivilege	2472	powershell.exe
Token: SeDebugPrivilege	4720	powershell.exe
Token: SeDebugPrivilege	2136	powershell.exe
Token: SeDebugPrivilege	1864	powershell.exe
Token: SeDebugPrivilege	2180	powershell.exe
Token: SeDebugPrivilege	548	TTDesktop18.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 548 wrote to memory of 1416	548	TTDesktop18.exe	85
PID 548 wrote to memory of 1416	548	TTDesktop18.exe	85
PID 548 wrote to memory of 1416	548	TTDesktop18.exe	85
PID 1416 wrote to memory of 2472	1416	powershell.exe	89
PID 1416 wrote to memory of 2472	1416	powershell.exe	89
PID 1416 wrote to memory of 2472	1416	powershell.exe	89
PID 548 wrote to memory of 4720	548	TTDesktop18.exe	93
PID 548 wrote to memory of 4720	548	TTDesktop18.exe	93
PID 548 wrote to memory of 4720	548	TTDesktop18.exe	93
PID 4720 wrote to memory of 2136	4720	powershell.exe	95
PID 4720 wrote to memory of 2136	4720	powershell.exe	95
PID 4720 wrote to memory of 2136	4720	powershell.exe	95
PID 548 wrote to memory of 1864	548	TTDesktop18.exe	98
PID 548 wrote to memory of 1864	548	TTDesktop18.exe	98
PID 548 wrote to memory of 1864	548	TTDesktop18.exe	98
PID 1864 wrote to memory of 2180	1864	powershell.exe	100
PID 1864 wrote to memory of 2180	1864	powershell.exe	100
PID 1864 wrote to memory of 2180	1864	powershell.exe	100
PID 548 wrote to memory of 984	548	TTDesktop18.exe	105
PID 548 wrote to memory of 984	548	TTDesktop18.exe	105
PID 548 wrote to memory of 984	548	TTDesktop18.exe	105
PID 984 wrote to memory of 4440	984	jRpXOFwnw.exe	110
PID 984 wrote to memory of 4440	984	jRpXOFwnw.exe	110
PID 984 wrote to memory of 4440	984	jRpXOFwnw.exe	110
PID 4440 wrote to memory of 3816	4440	cmd.exe	112
PID 4440 wrote to memory of 3816	4440	cmd.exe	112
PID 4440 wrote to memory of 3816	4440	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\InstalIеr-x86\TTDesktop18.exe
"C:\Users\Admin\AppData\Local\Temp\InstalIеr-x86\TTDesktop18.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:548
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" powershell -Command "Add-MpPreference -ExclusionPath 'C:\qpFliHZTAX'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1416
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\qpFliHZTAX
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2472
- 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:4720
- - 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:2136
- 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:1864
- - 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:2180
- C:\qpFliHZTAX\jRpXOFwnw.exe
  "C:\qpFliHZTAX\jRpXOFwnw.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:984
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\qpFliHZTAX\jRpXOFwnw.exe" & rd /s /q "C:\ProgramData\BKECFIIEHCFH" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4440
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:3816

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:\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
104B

MD5
c150879e790fa3fad20747af6f1a48aa

SHA1
b7a0109160d6c7435c3e4da3141db1709c539944

SHA256
f7450fac09f2376fd4aa57d0b851131c0127fb0ac21e951f30d5b8b522243741

SHA512
c0ff60203156d3ef1181e84aa9144f9d69937a1f89a70217acff413f3a6c3f314d6674c7687d7df870b9363095f0d343522da08499bebbce25efcbe85728fe11

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

Filesize
11KB

MD5
de9f5cef61c9a7ac1afd122baa68c3aa

SHA1
72caf117066114c417de969f87db65ec39d402eb

SHA256
8fff1bc50890d8f5e72bca396661ecd8e36d7457170fe5621e39e17505e91451

SHA512
58079215886dac2d556849f2703221e759c684c92a55a13314c385fea0e57db32f71a1734e69b5c5245413b01f219cda983b5468160be696e35f5bde60dc638f

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

Filesize
11KB

MD5
ad79c44d0de13c7c7eb31671bf822ca0

SHA1
08097812be13d41288a916407cbda85902fc9547

SHA256
14aa0a6ac0c92ec06d006fbecb014646b1357e680a07e11573ad28d1eb650cc1

SHA512
056f7a908476cf848a9d2c1d06d45c09de2e8bb25959dbd02162119752baa4ce11d21ba8efeef4dcaa015522f0e3b8184993b00c5dbfa2d7022da67a5c79fdde

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lduswwm4.y5w.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\qpFliHZTAX\jRpXOFwnw.exe

Filesize
275KB

MD5
0a7b3454fdad8431bd3523648c915665

SHA1
800a97a7c1a92a92cac76afc1fe5349895ee5287

SHA256
baf217d7bb8f3a86856def6891638318a94ed5d7082149d4dd4cb755d90d86ce

SHA512
020e45eaeee083d6739155d9a821ab54dd07f1320b8efb73871ee5d29188122fdbb7d39b34a8b3694a8b0c08ae1801ec370e40ff8d837c9190a72905f26baff9

Download Submit
memory/548-145-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/548-132-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/548-34-0x0000000074B2E000-0x0000000074B2F000-memory.dmp

Filesize
4KB

Download
memory/548-0-0x0000000074B2E000-0x0000000074B2F000-memory.dmp

Filesize
4KB

Download
memory/548-1-0x00000000006F0000-0x00000000006FA000-memory.dmp

Filesize
40KB

Download
memory/984-140-0x00000000008F0000-0x0000000000B49000-memory.dmp

Filesize
2.3MB

Download
memory/984-159-0x00000000008F0000-0x0000000000B49000-memory.dmp

Filesize
2.3MB

Download
memory/1416-65-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/1416-6-0x0000000005660000-0x0000000005682000-memory.dmp

Filesize
136KB

Download
memory/1416-2-0x0000000002C60000-0x0000000002C96000-memory.dmp

Filesize
216KB

Download
memory/1416-3-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/1416-21-0x0000000006550000-0x000000000659C000-memory.dmp

Filesize
304KB

Download
memory/1416-4-0x00000000056F0000-0x0000000005D18000-memory.dmp

Filesize
6.2MB

Download
memory/1416-5-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/1416-20-0x0000000006530000-0x000000000654E000-memory.dmp

Filesize
120KB

Download
memory/1416-9-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/1416-19-0x0000000005F30000-0x0000000006284000-memory.dmp

Filesize
3.3MB

Download
memory/1416-7-0x0000000005E50000-0x0000000005EB6000-memory.dmp

Filesize
408KB

Download
memory/1416-8-0x0000000005EC0000-0x0000000005F26000-memory.dmp

Filesize
408KB

Download
memory/1864-108-0x00000000059D0000-0x0000000005D24000-memory.dmp

Filesize
3.3MB

Download
memory/2136-86-0x0000000070920000-0x000000007096C000-memory.dmp

Filesize
304KB

Download
memory/2180-119-0x0000000070920000-0x000000007096C000-memory.dmp

Filesize
304KB

Download
memory/2472-48-0x0000000007910000-0x000000000792E000-memory.dmp

Filesize
120KB

Download
memory/2472-22-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/2472-56-0x0000000007CE0000-0x0000000007CF4000-memory.dmp

Filesize
80KB

Download
memory/2472-57-0x0000000007DE0000-0x0000000007DFA000-memory.dmp

Filesize
104KB

Download
memory/2472-58-0x0000000007DC0000-0x0000000007DC8000-memory.dmp

Filesize
32KB

Download
memory/2472-61-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/2472-54-0x0000000007CA0000-0x0000000007CB1000-memory.dmp

Filesize
68KB

Download
memory/2472-53-0x0000000007D20000-0x0000000007DB6000-memory.dmp

Filesize
600KB

Download
memory/2472-52-0x0000000007B20000-0x0000000007B2A000-memory.dmp

Filesize
40KB

Download
memory/2472-23-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/2472-50-0x00000000080F0000-0x000000000876A000-memory.dmp

Filesize
6.5MB

Download
memory/2472-51-0x0000000007AA0000-0x0000000007ABA000-memory.dmp

Filesize
104KB

Download
memory/2472-49-0x0000000007970000-0x0000000007A13000-memory.dmp

Filesize
652KB

Download
memory/2472-55-0x0000000007CD0000-0x0000000007CDE000-memory.dmp

Filesize
56KB

Download
memory/2472-47-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/2472-36-0x0000000070920000-0x000000007096C000-memory.dmp

Filesize
304KB

Download
memory/2472-46-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/2472-35-0x0000000007930000-0x0000000007962000-memory.dmp

Filesize
200KB

Download
memory/2472-24-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/4720-71-0x0000000005860000-0x0000000005BB4000-memory.dmp

Filesize
3.3MB

Download