vidar | c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669

General

Target

c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe
Size

413KB
MD5

4ae2d1685d2732cfcd128560424c53cc
SHA1

cfc1bb605838dae6c9f8cd73dd70df914c15c6d4
SHA256

c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669
SHA512

e96da30ce119d220a552f9fb5d25241643d902f391457b17d43c6d9fa98133f118d86f687413312133480b498339d126a3906d5f509bf384f11ee39ed8f30a58
SSDEEP

12288:tMi7+OcVQP4lstjTN/Fzf3r0hNva1Jx8ZGHVABDFEO:tFtwYjTNtzDuN+gGHKft

Score

10^/10

vidar 58cd250b15e666e5f72fcf5caa6cb131 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

58cd250b15e666e5f72fcf5caa6cb131

C2

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Signatures

Detect Vidar Stealer 7 IoCs

stealer

resource	yara_rule
behavioral2/memory/4200-8-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4200-10-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4200-5-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4200-24-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4200-25-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4200-34-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/4200-35-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file
Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003
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 3552 set thread context of 4200	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	72

System Location Discovery: System Language Discovery 1 TTPs 2 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	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4200	RegAsm.exe
4200	RegAsm.exe
4200	RegAsm.exe
4200	RegAsm.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3552 wrote to memory of 5100	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	71
PID 3552 wrote to memory of 5100	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	71
PID 3552 wrote to memory of 5100	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	71
PID 3552 wrote to memory of 4200	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	72
PID 3552 wrote to memory of 4200	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	72
PID 3552 wrote to memory of 4200	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	72
PID 3552 wrote to memory of 4200	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	72
PID 3552 wrote to memory of 4200	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	72
PID 3552 wrote to memory of 4200	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	72
PID 3552 wrote to memory of 4200	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	72
PID 3552 wrote to memory of 4200	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	72
PID 3552 wrote to memory of 4200	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	72
PID 3552 wrote to memory of 4200	3552	c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe	72

C:\Users\Admin\AppData\Local\Temp\c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe
"C:\Users\Admin\AppData\Local\Temp\c13ea8341a801122bce40ae4d3d608728bf9c88404f3c315db88bd55c7316669.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3552
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:5100
- 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
  PID:4200

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

1

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

memory/3552-0-0x000000007315E000-0x000000007315F000-memory.dmp

Filesize
4KB

Download
memory/3552-1-0x0000000000B00000-0x0000000000B68000-memory.dmp

Filesize
416KB

Download
memory/3552-2-0x0000000073150000-0x000000007383E000-memory.dmp

Filesize
6.9MB

Download
memory/3552-15-0x0000000073150000-0x000000007383E000-memory.dmp

Filesize
6.9MB

Download
memory/3552-13-0x0000000073150000-0x000000007383E000-memory.dmp

Filesize
6.9MB

Download
memory/4200-5-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4200-10-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4200-8-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4200-24-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4200-25-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4200-27-0x000000001FC70000-0x000000001FECF000-memory.dmp

Filesize
2.4MB

Download
memory/4200-34-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/4200-35-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

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