vidar | 41915ffe249fb3ca4d56f818f326fc362fbb65da11e1bc46c556cc73a871f5ea

General

Target

vgerw15.exe
Size

283KB
MD5

c4c32e39c7bfcc29bf6c9f470a35c687
SHA1

a15b2cf75d84a72e6c7102f11ab2839e8e15fc06
SHA256

41915ffe249fb3ca4d56f818f326fc362fbb65da11e1bc46c556cc73a871f5ea
SHA512

b9e8c165789e4dc7ac804ce673143c9d5d13c86bf11aca76eae3ded6d3e3aabf3254081934d4a956ad657f51da34f0fc57104c59409c94f57212b6ccca50b574
SSDEEP

6144:U+jx57K2e1hirl2pSiryGwV42xHP72d7ZO3D67/mEO:jjXm24hi6SiuGu42hP729ZOwOEO

Score

10^/10

vidar credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

C2

https://t.me/fneogr

https://t.me/edm0d

https://steamcommunity.com/profiles/76561199768374681

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0

Signatures

Detect Vidar Stealer 10 IoCs

stealer

resource	yara_rule
behavioral1/memory/2960-9-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/2960-8-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/2960-13-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/2960-22-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/2960-19-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/2960-15-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/2960-10-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/2960-58-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/2960-59-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral1/memory/2960-60-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

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 2140 set thread context of 2960	2140	vgerw15.exe	31

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 4 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	vgerw15.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1720	timeout.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2960	RegAsm.exe
2960	RegAsm.exe
2960	RegAsm.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2140 wrote to memory of 2960	2140	vgerw15.exe	31
PID 2960 wrote to memory of 2124	2960	RegAsm.exe	34
PID 2960 wrote to memory of 2124	2960	RegAsm.exe	34
PID 2960 wrote to memory of 2124	2960	RegAsm.exe	34
PID 2960 wrote to memory of 2124	2960	RegAsm.exe	34
PID 2124 wrote to memory of 1720	2124	cmd.exe	36
PID 2124 wrote to memory of 1720	2124	cmd.exe	36
PID 2124 wrote to memory of 1720	2124	cmd.exe	36
PID 2124 wrote to memory of 1720	2124	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\vgerw15.exe
"C:\Users\Admin\AppData\Local\Temp\vgerw15.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2960
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" & rd /s /q "C:\ProgramData\IEGCBFHJDHJJ" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2124
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab765A.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar76BB.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2140-16-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2140-17-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2140-1-0x00000000003C0000-0x000000000040A000-memory.dmp

Filesize
296KB

Download
memory/2140-0-0x000000007415E000-0x000000007415F000-memory.dmp

Filesize
4KB

Download
memory/2960-15-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-5-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-19-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2960-13-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-8-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-10-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-22-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-3-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-9-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-7-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-58-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-59-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2960-60-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download

Analysis

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