stealc | 8d2f2dce701f8dc555e74b53bfaf7a1337027adc7fadc094b2eba3bb5b688f1b

Analysis

max time kernel
94s
max time network
144s
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, 21:39

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General

Target

TT18.exe
Size

12KB
MD5

ceb5022b92f0429137dc0fb67371e901
SHA1

999932b537591401dfa1a74df00dae99264bd994
SHA256

8d2f2dce701f8dc555e74b53bfaf7a1337027adc7fadc094b2eba3bb5b688f1b
SHA512

a7acdf417ef81f131c050bc8bd364edddf7a2ebc446c69411d549c14ca8967af7b8c8a2d4556018f148d1b57bc985e10104cdc72e2bed518cfe3280b0254a3d8
SSDEEP

192:knUbCDQoJq4Hb0jPuiJddudb7Z+XX1cNIQKXy+AFtaffEOsSRMWSVP1W58:kg3MGWimFNIQKX4Fgf8OxRBSVU

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/0x0010000000023c66-139.dat	family_vidar_v7
behavioral2/memory/4368-142-0x00000000005E0000-0x0000000000839000-memory.dmp	family_vidar_v7
behavioral2/memory/4368-161-0x00000000005E0000-0x0000000000839000-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
3244	powershell.exe
5048	powershell.exe
656	powershell.exe
2996	powershell.exe
2476	powershell.exe
2580	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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	33qs0zThr.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	TT18.exe

Executes dropped EXE 1 IoCs

pid	Process
4368	33qs0zThr.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	TT18.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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	33qs0zThr.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	33qs0zThr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	33qs0zThr.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3216	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
656	powershell.exe
656	powershell.exe
2996	powershell.exe
2996	powershell.exe
2476	powershell.exe
2476	powershell.exe
2580	powershell.exe
2580	powershell.exe
3244	powershell.exe
3244	powershell.exe
5048	powershell.exe
5048	powershell.exe
4368	33qs0zThr.exe
4368	33qs0zThr.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3672	TT18.exe
Token: SeDebugPrivilege	656	powershell.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeDebugPrivilege	2476	powershell.exe
Token: SeDebugPrivilege	2580	powershell.exe
Token: SeDebugPrivilege	3244	powershell.exe
Token: SeDebugPrivilege	5048	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 656	3672	TT18.exe	85
PID 3672 wrote to memory of 656	3672	TT18.exe	85
PID 3672 wrote to memory of 656	3672	TT18.exe	85
PID 656 wrote to memory of 2996	656	powershell.exe	87
PID 656 wrote to memory of 2996	656	powershell.exe	87
PID 656 wrote to memory of 2996	656	powershell.exe	87
PID 3672 wrote to memory of 2476	3672	TT18.exe	88
PID 3672 wrote to memory of 2476	3672	TT18.exe	88
PID 3672 wrote to memory of 2476	3672	TT18.exe	88
PID 2476 wrote to memory of 2580	2476	powershell.exe	90
PID 2476 wrote to memory of 2580	2476	powershell.exe	90
PID 2476 wrote to memory of 2580	2476	powershell.exe	90
PID 3672 wrote to memory of 3244	3672	TT18.exe	91
PID 3672 wrote to memory of 3244	3672	TT18.exe	91
PID 3672 wrote to memory of 3244	3672	TT18.exe	91
PID 3244 wrote to memory of 5048	3244	powershell.exe	93
PID 3244 wrote to memory of 5048	3244	powershell.exe	93
PID 3244 wrote to memory of 5048	3244	powershell.exe	93
PID 3672 wrote to memory of 4368	3672	TT18.exe	98
PID 3672 wrote to memory of 4368	3672	TT18.exe	98
PID 3672 wrote to memory of 4368	3672	TT18.exe	98
PID 4368 wrote to memory of 1020	4368	33qs0zThr.exe	111
PID 4368 wrote to memory of 1020	4368	33qs0zThr.exe	111
PID 4368 wrote to memory of 1020	4368	33qs0zThr.exe	111
PID 1020 wrote to memory of 3216	1020	cmd.exe	113
PID 1020 wrote to memory of 3216	1020	cmd.exe	113
PID 1020 wrote to memory of 3216	1020	cmd.exe	113

C:\Users\Admin\AppData\Local\Temp\TT18.exe
"C:\Users\Admin\AppData\Local\Temp\TT18.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" powershell -Command "Add-MpPreference -ExclusionPath 'C:\XFbOJbBL'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:656
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\XFbOJbBL
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2996
- 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:2476
- - 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:2580
- 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:3244
- - 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:5048
- C:\XFbOJbBL\33qs0zThr.exe
  "C:\XFbOJbBL\33qs0zThr.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:4368
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\XFbOJbBL\33qs0zThr.exe" & rd /s /q "C:\ProgramData\CGIJECFIECBF" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1020
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:3216

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
354B

MD5
f248e8285d61b5d8420d2f39d2a73110

SHA1
f112c1721dd9b1a9d581657261383d33cee4160f

SHA256
f4845571fbbf3168fd0bc9942a5fd0a03b53e404c77d34738b6ebfab786db98f

SHA512
a87b274e42b1eeac01fade45ecf4e10e7ad145ba5a64049d0e8408c85b249502b9947fb55c260f21b527898af53834bebf67de8d510619d86548ccb95106da62

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

Filesize
11KB

MD5
b3690c3a5add3f9736da5a8e22346578

SHA1
80cae6549059db60b4b2d1a970136ca85f47b2d5

SHA256
f8d5a8ad15d1d4ae9ce1f175824a286ebe61ecfa7f08e4d34374543746b1dab7

SHA512
a87be12e6c26833d3b71f782b7c02d80f4f32c02bbff0feb2640dcdb60e67bb03156765c8a98828b8f6438e197ceacf7d87ec82c8cb7f8dadd4839007f831d9d

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

Filesize
11KB

MD5
e4550616831af74615332147e4eeaa56

SHA1
298a33d78f9a16b44130dff4ebf3eccd988a6f48

SHA256
dff42f693e377578a014159366d76d755257c648425de84d0c46c6202d43eb6e

SHA512
eedaa3c29fae1a9420d8d87dbdd28059037759a5e2b8ef37c8e243537ffd42054d13da7dee195f8106159d61c762ecd43ce4075f37de4f1aafa7a6ea154b334b

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

Filesize
11KB

MD5
7feba82ed64947e3e50b65e4f004883c

SHA1
20be49f1d06daa174581e116b9dc9e34e49bc26a

SHA256
3439c2bac1158a192af686a956a23cbc56346519094821fb51e6e102c6addaa6

SHA512
e33697cf44596daaa19e6db6412d739587d257c094429b8ff494bf3bea5a19749ce5f50b32f8be490ac25f2e85990b97c2d8b0f9eb6de86780d7d64ac9b38ede

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uzulcg2j.rhq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\XFbOJbBL\33qs0zThr.exe

Filesize
275KB

MD5
0a7b3454fdad8431bd3523648c915665

SHA1
800a97a7c1a92a92cac76afc1fe5349895ee5287

SHA256
baf217d7bb8f3a86856def6891638318a94ed5d7082149d4dd4cb755d90d86ce

SHA512
020e45eaeee083d6739155d9a821ab54dd07f1320b8efb73871ee5d29188122fdbb7d39b34a8b3694a8b0c08ae1801ec370e40ff8d837c9190a72905f26baff9

Download Submit
memory/656-17-0x00000000062F0000-0x0000000006644000-memory.dmp

Filesize
3.3MB

Download
memory/656-22-0x0000000006A40000-0x0000000006A8C000-memory.dmp

Filesize
304KB

Download
memory/656-8-0x00000000060E0000-0x0000000006146000-memory.dmp

Filesize
408KB

Download
memory/656-7-0x0000000005A00000-0x0000000005A22000-memory.dmp

Filesize
136KB

Download
memory/656-15-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/656-3-0x0000000002FA0000-0x0000000002FD6000-memory.dmp

Filesize
216KB

Download
memory/656-21-0x00000000068D0000-0x00000000068EE000-memory.dmp

Filesize
120KB

Download
memory/656-6-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/656-4-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/656-5-0x0000000005AB0000-0x00000000060D8000-memory.dmp

Filesize
6.2MB

Download
memory/656-66-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/656-9-0x00000000061C0000-0x0000000006226000-memory.dmp

Filesize
408KB

Download
memory/2476-76-0x00000000058A0000-0x0000000005BF4000-memory.dmp

Filesize
3.3MB

Download
memory/2580-88-0x0000000070950000-0x000000007099C000-memory.dmp

Filesize
304KB

Download
memory/2996-47-0x0000000006820000-0x000000000683E000-memory.dmp

Filesize
120KB

Download
memory/2996-36-0x0000000070950000-0x000000007099C000-memory.dmp

Filesize
304KB

Download
memory/2996-49-0x0000000007280000-0x0000000007323000-memory.dmp

Filesize
652KB

Download
memory/2996-50-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/2996-52-0x0000000007380000-0x000000000739A000-memory.dmp

Filesize
104KB

Download
memory/2996-51-0x0000000007CA0000-0x000000000831A000-memory.dmp

Filesize
6.5MB

Download
memory/2996-53-0x00000000073F0000-0x00000000073FA000-memory.dmp

Filesize
40KB

Download
memory/2996-54-0x0000000007810000-0x00000000078A6000-memory.dmp

Filesize
600KB

Download
memory/2996-55-0x0000000007790000-0x00000000077A1000-memory.dmp

Filesize
68KB

Download
memory/2996-56-0x00000000077C0000-0x00000000077CE000-memory.dmp

Filesize
56KB

Download
memory/2996-57-0x00000000077D0000-0x00000000077E4000-memory.dmp

Filesize
80KB

Download
memory/2996-58-0x00000000078D0000-0x00000000078EA000-memory.dmp

Filesize
104KB

Download
memory/2996-59-0x00000000078B0000-0x00000000078B8000-memory.dmp

Filesize
32KB

Download
memory/2996-62-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/2996-35-0x0000000007240000-0x0000000007272000-memory.dmp

Filesize
200KB

Download
memory/2996-48-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/2996-37-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/2996-34-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/2996-23-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/2996-24-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/3244-102-0x00000000054B0000-0x0000000005804000-memory.dmp

Filesize
3.3MB

Download
memory/3672-98-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/3672-78-0x0000000074B5E000-0x0000000074B5F000-memory.dmp

Filesize
4KB

Download
memory/3672-0-0x0000000074B5E000-0x0000000074B5F000-memory.dmp

Filesize
4KB

Download
memory/3672-2-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/3672-1-0x0000000000590000-0x000000000059A000-memory.dmp

Filesize
40KB

Download
memory/3672-144-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/4368-142-0x00000000005E0000-0x0000000000839000-memory.dmp

Filesize
2.3MB

Download
memory/4368-161-0x00000000005E0000-0x0000000000839000-memory.dmp

Filesize
2.3MB

Download
memory/5048-122-0x0000000070950000-0x000000007099C000-memory.dmp

Filesize
304KB

Download