stealc | 50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16

General

Target

50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe
Size

1.7MB
MD5

c5a542c038035d3a9c16879811f9bedd
SHA1

ab47898594c8cfc18880f01dd9a4fcc7943d6583
SHA256

50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16
SHA512

80e99beb6893e246a73e136a797ac3a7c7b2dee0f4b99bb9c389bbbae7a0e50dda267c714cabce43dc691de98481739082ccd890a0709fdfa43ca0bede2b27b9
SSDEEP

24576:UBqWKKYMPEVRYzMPkYHXANYksiZArxliP4OTomFu5Xxth9:UyM8VR8W5aYRi2lpYu5XxZ

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/bu77un

https://steamcommunity.com/profiles/76561199730044335

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.1) Gecko/20100101 Firefox/128.1

Signatures

Detect Vidar Stealer 16 IoCs

stealer

resource	yara_rule
behavioral1/memory/2208-2-0x00000000022B0000-0x00000000023F3000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-23-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-24-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-19-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-17-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-15-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-158-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-177-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-206-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-232-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-233-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-259-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-426-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-445-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-464-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2572-485-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2572	kat77FD.tmp

Loads dropped DLL 2 IoCs

pid	Process
2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe
2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2208 set thread context of 2572	2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe	28

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	kat77FD.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat77FD.tmp

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1040	timeout.exe

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	kat77FD.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	kat77FD.tmp
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25	kat77FD.tmp

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2572	kat77FD.tmp
2572	kat77FD.tmp
2572	kat77FD.tmp
2572	kat77FD.tmp

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2572	2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe	28
PID 2208 wrote to memory of 2572	2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe	28
PID 2208 wrote to memory of 2572	2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe	28
PID 2208 wrote to memory of 2572	2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe	28
PID 2208 wrote to memory of 2572	2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe	28
PID 2208 wrote to memory of 2572	2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe	28
PID 2208 wrote to memory of 2572	2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe	28
PID 2208 wrote to memory of 2572	2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe	28
PID 2208 wrote to memory of 2572	2208	50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe	28
PID 2572 wrote to memory of 2824	2572	kat77FD.tmp	31
PID 2572 wrote to memory of 2824	2572	kat77FD.tmp	31
PID 2572 wrote to memory of 2824	2572	kat77FD.tmp	31
PID 2572 wrote to memory of 2824	2572	kat77FD.tmp	31
PID 2824 wrote to memory of 1040	2824	cmd.exe	33
PID 2824 wrote to memory of 1040	2824	cmd.exe	33
PID 2824 wrote to memory of 1040	2824	cmd.exe	33
PID 2824 wrote to memory of 1040	2824	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe
"C:\Users\Admin\AppData\Local\Temp\50cb2e64b6d56b63dea489839ce9a02453f34d613bdc7dcba7b62d2b2c3d0c16.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Users\Admin\AppData\Local\Temp\kat77FD.tmp
  C:\Users\Admin\AppData\Local\Temp\kat77FD.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2572
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat77FD.tmp" & rd /s /q "C:\ProgramData\ECAKKKKJDBKK" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2824
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:1040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
2143070618d3e41bc13abf8a09919cc2

SHA1
af7dd9a40e9878d483685d3c83e203cca57cbdd3

SHA256
bef2fbffa6b48f2f8c7e7bfafab834b516f6e650a8098050001e25e046fd4f9f

SHA512
3502c7b472cc7359de2ac1a1051ba5490200c56b9f889d068a1b03f02afef27e6f9116f5339a1a02f54bf35b37d49e1cbb3c24053e2267b293d159f98081989f

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab8CA8.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar8D28.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\kat77FD.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2208-21-0x0000000000400000-0x00000000005C5000-memory.dmp

Filesize
1.8MB

Download
memory/2208-2-0x00000000022B0000-0x00000000023F3000-memory.dmp

Filesize
1.3MB

Download
memory/2208-0-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2572-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-177-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-23-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-11-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-15-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-19-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-9-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-24-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-158-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-17-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-198-0x00000000271B0000-0x000000002740F000-memory.dmp

Filesize
2.4MB

Download
memory/2572-206-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-232-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-233-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-259-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-426-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-445-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-464-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2572-485-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download

Analysis

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