vidar | ae4652c4433d845665b44f36ba2e4188ca5e33a1df4ea3183af5f3cfbc0d3614

General

Target

25f5bb6b3ac38fe55b9e09e198ec3a65.exe
Size

598KB
MD5

25f5bb6b3ac38fe55b9e09e198ec3a65
SHA1

f60a23765859b7b1add8124c74d382b50484925d
SHA256

ae4652c4433d845665b44f36ba2e4188ca5e33a1df4ea3183af5f3cfbc0d3614
SHA512

c7f28ecaf9e9bcbd96b06beb7164f6d8374bec856e0064fadc42ea68491530dd0462949ad5ed78ed1b9a89c73b4bfd1e6bd3b7a7bd8218dcf6557db362d6c35e
SSDEEP

12288:E8yf0yrFNqkBdKYN3+xAAgZsltw5bTOt4g0sht8Gj64fPsETEO:E8EfrF7xF+xZwf00shp+dmt

Score

10^/10

vidar 8ecc9c7eaebfdf2a8cc0586d7419d6ea discovery stealer

Malware Config

Extracted

Family

vidar

Botnet

8ecc9c7eaebfdf2a8cc0586d7419d6ea

C2

https://t.me/maslengdsa

https://steamcommunity.com/profiles/76561199786602107

https://t.me/lpnjoke

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 11 IoCs

stealer

resource	yara_rule
behavioral1/memory/2348-14-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2348-13-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2348-9-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2348-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2348-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2348-17-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2348-151-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2348-170-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2348-204-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2348-213-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2348-224-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2108 set thread context of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1596	2108	WerFault.exe	29

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	25f5bb6b3ac38fe55b9e09e198ec3a65.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.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	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2348	MSBuild.exe
2348	MSBuild.exe
2348	MSBuild.exe
2348	MSBuild.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2296	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	30
PID 2108 wrote to memory of 2296	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	30
PID 2108 wrote to memory of 2296	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	30
PID 2108 wrote to memory of 2296	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	30
PID 2108 wrote to memory of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31
PID 2108 wrote to memory of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31
PID 2108 wrote to memory of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31
PID 2108 wrote to memory of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31
PID 2108 wrote to memory of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31
PID 2108 wrote to memory of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31
PID 2108 wrote to memory of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31
PID 2108 wrote to memory of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31
PID 2108 wrote to memory of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31
PID 2108 wrote to memory of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31
PID 2108 wrote to memory of 2348	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	31
PID 2108 wrote to memory of 1596	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	32
PID 2108 wrote to memory of 1596	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	32
PID 2108 wrote to memory of 1596	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	32
PID 2108 wrote to memory of 1596	2108	25f5bb6b3ac38fe55b9e09e198ec3a65.exe	32

C:\Users\Admin\AppData\Local\Temp\25f5bb6b3ac38fe55b9e09e198ec3a65.exe
"C:\Users\Admin\AppData\Local\Temp\25f5bb6b3ac38fe55b9e09e198ec3a65.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:2296
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2348
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2108 -s 104
  2⤵
  - Program crash
  PID:1596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
342B

MD5
ebcfaf80de222dd5ac8d6f5502a4fce6

SHA1
cf917aa850fb71ecbabe3fc193706518322c833e

SHA256
9e882b0a6f156aff8c95036100104643ea21aa3309d876ba5fb82688bbe12966

SHA512
650ab917b8e1b76d11a3fcb023d789ede05046d6205742ffd772c89dfc7276c05e77ccb3f7385a12194b79a688e28fcd7fa9a043440dd56ddb3036adfb68e9de

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabE0FE.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarE2A7.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2108-0-0x00000000001EF000-0x00000000001F1000-memory.dmp

Filesize
8KB

Download
memory/2348-17-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2348-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-5-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-9-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-13-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-14-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-151-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-170-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-189-0x0000000020030000-0x000000002028F000-memory.dmp

Filesize
2.4MB

Download
memory/2348-204-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-213-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2348-224-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing