stealc | 2717732bd1b18153a65172c661ee28e5926c2b24c1e556cca701c9f3b6973bdb

Analysis

max time kernel
94s
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
02-12-2024 01:07

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General

Target

8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.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
behavioral2/files/0x0011000000023caa-135.dat	family_vidar_v7
behavioral2/memory/3116-138-0x0000000000DB0000-0x0000000001009000-memory.dmp	family_vidar_v7
behavioral2/memory/3116-157-0x0000000000DB0000-0x0000000001009000-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
4040	powershell.exe
1080	powershell.exe
3696	powershell.exe
4504	powershell.exe
3164	powershell.exe
2736	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	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	zzufCeXHIE.exe

Executes dropped EXE 1 IoCs

pid	Process
3116	zzufCeXHIE.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
25	raw.githubusercontent.com
26	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	zzufCeXHIE.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.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	cmd.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	zzufCeXHIE.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	zzufCeXHIE.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1352	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1080	powershell.exe
1080	powershell.exe
3696	powershell.exe
3696	powershell.exe
4504	powershell.exe
4504	powershell.exe
3164	powershell.exe
3164	powershell.exe
2736	powershell.exe
2736	powershell.exe
4040	powershell.exe
4040	powershell.exe
3116	zzufCeXHIE.exe
3116	zzufCeXHIE.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1080	powershell.exe
Token: SeDebugPrivilege	3696	powershell.exe
Token: SeDebugPrivilege	4504	powershell.exe
Token: SeDebugPrivilege	3164	powershell.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeDebugPrivilege	4040	powershell.exe
Token: SeDebugPrivilege	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3724 wrote to memory of 1080	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	87
PID 3724 wrote to memory of 1080	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	87
PID 3724 wrote to memory of 1080	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	87
PID 1080 wrote to memory of 3696	1080	powershell.exe	91
PID 1080 wrote to memory of 3696	1080	powershell.exe	91
PID 1080 wrote to memory of 3696	1080	powershell.exe	91
PID 3724 wrote to memory of 4504	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	95
PID 3724 wrote to memory of 4504	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	95
PID 3724 wrote to memory of 4504	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	95
PID 4504 wrote to memory of 3164	4504	powershell.exe	99
PID 4504 wrote to memory of 3164	4504	powershell.exe	99
PID 4504 wrote to memory of 3164	4504	powershell.exe	99
PID 3724 wrote to memory of 2736	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	103
PID 3724 wrote to memory of 2736	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	103
PID 3724 wrote to memory of 2736	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	103
PID 2736 wrote to memory of 4040	2736	powershell.exe	105
PID 2736 wrote to memory of 4040	2736	powershell.exe	105
PID 2736 wrote to memory of 4040	2736	powershell.exe	105
PID 3724 wrote to memory of 3116	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	107
PID 3724 wrote to memory of 3116	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	107
PID 3724 wrote to memory of 3116	3724	8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe	107
PID 3116 wrote to memory of 2528	3116	zzufCeXHIE.exe	112
PID 3116 wrote to memory of 2528	3116	zzufCeXHIE.exe	112
PID 3116 wrote to memory of 2528	3116	zzufCeXHIE.exe	112
PID 2528 wrote to memory of 1352	2528	cmd.exe	114
PID 2528 wrote to memory of 1352	2528	cmd.exe	114
PID 2528 wrote to memory of 1352	2528	cmd.exe	114

C:\Users\Admin\AppData\Local\Temp\8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe
"C:\Users\Admin\AppData\Local\Temp\8680e9ff0246c2b7cd4a45a9c6262851ce8d12e4638e48cb1baec267c2b6ea6b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3724
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" powershell -Command "Add-MpPreference -ExclusionPath 'C:\NdJpnxtw'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1080
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Add-MpPreference -ExclusionPath C:\NdJpnxtw
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3696
- 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:4504
- - 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:3164
- 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:2736
- - 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:4040
- C:\NdJpnxtw\zzufCeXHIE.exe
  "C:\NdJpnxtw\zzufCeXHIE.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:3116
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\NdJpnxtw\zzufCeXHIE.exe" & rd /s /q "C:\ProgramData\CAKKEGDGCGDA" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2528
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1352

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:\NdJpnxtw\zzufCeXHIE.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
e38cf80ccd733d12acd8ed657fa76a0f

SHA1
580e49e1b482dcf0480cefe6d5bf8f0331732296

SHA256
47996c1354ee704ef75a94ae2217033da52695ca164573023cda951bdec728be

SHA512
ed7056b56d6cd0fd42f9bb716c647ed21f988231aa0817f28be7fceab199a274a479af4e7b77b86ed298b6734b39c2e6714d46bd6bd408d9862a77d97013bc12

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

Filesize
11KB

MD5
e3dedaaad1468c9dbfe37709e346fbf2

SHA1
520e7b6844e83c302e945b41f1bf0674b4c901d5

SHA256
fd85dab85c6e779cc577e57a275e8b72c905df2b7ca96f99811017db45c2a0a6

SHA512
2cda5adddd9c63d7376a079f9f6ffa4aaf290b650dee0f5b196b41e39ead09bf1ca5852b9bafaf6216efd131beff0d574280ac7f4ff526bb9577f13fca235c98

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

Filesize
11KB

MD5
0c3c50135ad0881ee5bb27152051d038

SHA1
502027d6a1a9871392d895e4cffefe385faa8d26

SHA256
437f53af720e0fe4f3893d346df20de37606232b6d096edf5103dfd9c2226c27

SHA512
a7df4092aeb24d77af56cc7f009891fe023b06e5025cc3ebb296c2ddf8879c061deabaedc18105666644d884f0dfe5ce2ad7a707f2a9f4c5c7f2c27d45d0a64c

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

Filesize
11KB

MD5
55803fe27582b0ca10e3a0a08acee625

SHA1
0fa7264019290dc37b1882fffd177f7839d44975

SHA256
61fb571895ed69da97e17a3e90a9e87b97a7e5439746110c43239444c686d1b5

SHA512
6cb7123e5e1ebc5a9db8a075649882eaa0f75ca2e8fb22dcf9ac0a67c7df27aa7746072c6d41d57e8fda8628d798bf84f6c2bde306d266766e6b063db413c015

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_j1cwy42k.nbk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1080-19-0x0000000006690000-0x00000000066AE000-memory.dmp

Filesize
120KB

Download
memory/1080-7-0x0000000005870000-0x00000000058D6000-memory.dmp

Filesize
408KB

Download
memory/1080-6-0x00000000057C0000-0x00000000057E2000-memory.dmp

Filesize
136KB

Download
memory/1080-8-0x00000000058E0000-0x0000000005946000-memory.dmp

Filesize
408KB

Download
memory/1080-18-0x0000000006050000-0x00000000063A4000-memory.dmp

Filesize
3.3MB

Download
memory/1080-4-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1080-20-0x00000000066D0000-0x000000000671C000-memory.dmp

Filesize
304KB

Download
memory/1080-63-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1080-2-0x0000000002D70000-0x0000000002DA6000-memory.dmp

Filesize
216KB

Download
memory/1080-3-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/1080-5-0x00000000059E0000-0x0000000006008000-memory.dmp

Filesize
6.2MB

Download
memory/2736-106-0x0000000005600000-0x0000000005954000-memory.dmp

Filesize
3.3MB

Download
memory/3116-138-0x0000000000DB0000-0x0000000001009000-memory.dmp

Filesize
2.3MB

Download
memory/3116-157-0x0000000000DB0000-0x0000000001009000-memory.dmp

Filesize
2.3MB

Download
memory/3164-84-0x0000000070720000-0x000000007076C000-memory.dmp

Filesize
304KB

Download
memory/3696-33-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3696-45-0x00000000060A0000-0x00000000060BE000-memory.dmp

Filesize
120KB

Download
memory/3696-49-0x0000000006E10000-0x0000000006E2A000-memory.dmp

Filesize
104KB

Download
memory/3696-50-0x0000000006E90000-0x0000000006E9A000-memory.dmp

Filesize
40KB

Download
memory/3696-51-0x0000000007090000-0x0000000007126000-memory.dmp

Filesize
600KB

Download
memory/3696-52-0x0000000007010000-0x0000000007021000-memory.dmp

Filesize
68KB

Download
memory/3696-53-0x0000000007040000-0x000000000704E000-memory.dmp

Filesize
56KB

Download
memory/3696-54-0x0000000007050000-0x0000000007064000-memory.dmp

Filesize
80KB

Download
memory/3696-55-0x0000000007150000-0x000000000716A000-memory.dmp

Filesize
104KB

Download
memory/3696-56-0x0000000007130000-0x0000000007138000-memory.dmp

Filesize
32KB

Download
memory/3696-59-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3696-47-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3696-46-0x0000000006CC0000-0x0000000006D63000-memory.dmp

Filesize
652KB

Download
memory/3696-48-0x0000000007460000-0x0000000007ADA000-memory.dmp

Filesize
6.5MB

Download
memory/3696-21-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3696-35-0x0000000070720000-0x000000007076C000-memory.dmp

Filesize
304KB

Download
memory/3696-34-0x0000000006A70000-0x0000000006AA2000-memory.dmp

Filesize
200KB

Download
memory/3696-22-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3724-32-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/3724-130-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3724-1-0x00000000005F0000-0x00000000005FA000-memory.dmp

Filesize
40KB

Download
memory/3724-143-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/3724-0-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/4040-117-0x0000000070720000-0x000000007076C000-memory.dmp

Filesize
304KB

Download
memory/4504-73-0x0000000005FB0000-0x0000000006304000-memory.dmp

Filesize
3.3MB

Download