vidar | 9ff7923de3f164579964eab7e8f6e23a8ed18c488a862a504a23ef14281198de

General

Target

ser33vs.exe
Size

1.5MB
MD5

a812b477526d412e6d89d9733b935406
SHA1

dada6f2fde5f1679665625dfba529f0c13c1d1d5
SHA256

9ff7923de3f164579964eab7e8f6e23a8ed18c488a862a504a23ef14281198de
SHA512

2cd838e2d5a2c7ca6f4bfe6f2035084276677f526cab0194dd3b45007d8d0453528f8ded130dbd3484b751f76221f54c2c8866c137ddd44ae2096e3abefe0cff

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Loads dropped DLL 2 IoCs

Processes:

ser33vs.exe

pid process

788 ser33vs.exe
788 ser33vs.exe
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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
T1081
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
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

Processes:

ser33vs.exe

description pid process target process

PID 1016 set thread context of 788 1016 ser33vs.exe ser33vs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
788	ser33vs.exe
788	ser33vs.exe

description	pid	process	target process
PID 1016 set thread context of 788	1016	ser33vs.exe	ser33vs.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

Processes:

ser33vs.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ser33vs.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ser33vs.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2820 timeout.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1896 taskkill.exe

pid	process
2820	timeout.exe

pid	process
1896	taskkill.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

ser33vs.exeser33vs.exe

pid	process
1016	ser33vs.exe
1016	ser33vs.exe
788	ser33vs.exe
788	ser33vs.exe
788	ser33vs.exe
788	ser33vs.exe
788	ser33vs.exe
788	ser33vs.exe
788	ser33vs.exe
788	ser33vs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

ser33vs.exetaskkill.exe

description pid process

Token: SeDebugPrivilege 1016 ser33vs.exe
Token: SeDebugPrivilege 1896 taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1016	ser33vs.exe
Token: SeDebugPrivilege	1896	taskkill.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

ser33vs.exeser33vs.execmd.exe

description	pid	process	target process
PID 1016 wrote to memory of 3808	1016	ser33vs.exe	ser33vs.exe
PID 1016 wrote to memory of 3808	1016	ser33vs.exe	ser33vs.exe
PID 1016 wrote to memory of 3808	1016	ser33vs.exe	ser33vs.exe
PID 1016 wrote to memory of 788	1016	ser33vs.exe	ser33vs.exe
PID 1016 wrote to memory of 788	1016	ser33vs.exe	ser33vs.exe
PID 1016 wrote to memory of 788	1016	ser33vs.exe	ser33vs.exe
PID 1016 wrote to memory of 788	1016	ser33vs.exe	ser33vs.exe
PID 1016 wrote to memory of 788	1016	ser33vs.exe	ser33vs.exe
PID 1016 wrote to memory of 788	1016	ser33vs.exe	ser33vs.exe
PID 1016 wrote to memory of 788	1016	ser33vs.exe	ser33vs.exe
PID 1016 wrote to memory of 788	1016	ser33vs.exe	ser33vs.exe
PID 788 wrote to memory of 3852	788	ser33vs.exe	cmd.exe
PID 788 wrote to memory of 3852	788	ser33vs.exe	cmd.exe
PID 788 wrote to memory of 3852	788	ser33vs.exe	cmd.exe
PID 3852 wrote to memory of 1896	3852	cmd.exe	taskkill.exe
PID 3852 wrote to memory of 1896	3852	cmd.exe	taskkill.exe
PID 3852 wrote to memory of 1896	3852	cmd.exe	taskkill.exe
PID 3852 wrote to memory of 2820	3852	cmd.exe	timeout.exe
PID 3852 wrote to memory of 2820	3852	cmd.exe	timeout.exe
PID 3852 wrote to memory of 2820	3852	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\ser33vs.exe
"C:\Users\Admin\AppData\Local\Temp\ser33vs.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1016

C:\Users\Admin\AppData\Local\Temp\ser33vs.exe
"{path}"
2⤵
PID:3808

C:\Users\Admin\AppData\Local\Temp\ser33vs.exe
"{path}"
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:788

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im ser33vs.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\ser33vs.exe" & del C:\ProgramData\*.dll & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:3852

C:\Windows\SysWOW64\taskkill.exe
taskkill /im ser33vs.exe /f
4⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1896

C:\Windows\SysWOW64\timeout.exe
timeout /t 6
4⤵
- Delays execution with timeout.exe
PID:2820

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

4

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

4

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\freebl3.dll
MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

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C:\ProgramData\mozglue.dll
MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

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C:\ProgramData\msvcp140.dll
MD5
109f0f02fd37c84bfc7508d4227d7ed5

SHA1
ef7420141bb15ac334d3964082361a460bfdb975

SHA256
334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

SHA512
46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

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C:\ProgramData\nss3.dll
MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

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C:\ProgramData\softokn3.dll
MD5
a2ee53de9167bf0d6c019303b7ca84e5

SHA1
2a3c737fa1157e8483815e98b666408a18c0db42

SHA256
43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

SHA512
45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

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C:\ProgramData\vcruntime140.dll
MD5
7587bf9cb4147022cd5681b015183046

SHA1
f2106306a8f6f0da5afb7fc765cfa0757ad5a628

SHA256
c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

SHA512
0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

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\ProgramData\mozglue.dll
MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\ProgramData\nss3.dll
MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

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memory/788-127-0x0000000000400000-0x0000000000498000-memory.dmp

Filesize
608KB

Download
memory/788-126-0x000000000046662D-mapping.dmp

Download
memory/788-125-0x0000000000400000-0x0000000000498000-memory.dmp

Filesize
608KB

Download
memory/1016-121-0x00000000066D0000-0x00000000066D5000-memory.dmp

Filesize
20KB

Download
memory/1016-114-0x00000000002C0000-0x00000000002C1000-memory.dmp

Filesize
4KB

Download
memory/1016-123-0x00000000098B0000-0x0000000009988000-memory.dmp

Filesize
864KB

Download
memory/1016-122-0x0000000006780000-0x0000000006781000-memory.dmp

Filesize
4KB

Download
memory/1016-124-0x00000000095B0000-0x0000000009645000-memory.dmp

Filesize
596KB

Download
memory/1016-120-0x0000000004BE0000-0x0000000004BE1000-memory.dmp

Filesize
4KB

Download
memory/1016-119-0x0000000006600000-0x00000000066CF000-memory.dmp

Filesize
828KB

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memory/1016-118-0x0000000004E10000-0x0000000004E11000-memory.dmp

Filesize
4KB

Download
memory/1016-117-0x0000000004CA0000-0x0000000004CA1000-memory.dmp

Filesize
4KB

Download
memory/1016-116-0x00000000050F0000-0x00000000050F1000-memory.dmp

Filesize
4KB

Download
memory/1896-131-0x0000000000000000-mapping.dmp

Download
memory/2820-132-0x0000000000000000-mapping.dmp

Download
memory/3852-130-0x0000000000000000-mapping.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads