vidar | 598d944c8f0ef8d8536487bb9b62ff8fbf6758b37da5132e17fb31e07acddc65

General

Target

784d1f5c2ef013a0523ca0616f62698d.exe
Size

2.4MB
MD5

784d1f5c2ef013a0523ca0616f62698d
SHA1

e4c76b676705a8ffcecb6fc8a9c2424300c9bd6c
SHA256

598d944c8f0ef8d8536487bb9b62ff8fbf6758b37da5132e17fb31e07acddc65
SHA512

3d08427e5fa3bf1cc31d0e8b97564c977ae8ea74afb5c3b2d87e36c63213148a85d84cd4a6f4a3d694459a79474f370b9cd131469f6a57e6c6ff6683038d7998

Score

10^/10

vidar 921 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

40.1

Botnet

921

C2

https://eduarroma.tumblr.com/

Attributes

profile_id
921

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata

Vidar Stealer 3 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/2736-120-0x0000000000400000-0x00000000004A1000-memory.dmp	family_vidar
behavioral2/memory/2736-121-0x000000000046B77D-mapping.dmp	family_vidar
behavioral2/memory/2736-122-0x0000000000400000-0x00000000004A1000-memory.dmp	family_vidar

Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

784d1f5c2ef013a0523ca0616f62698d.exe

pid process

2736 784d1f5c2ef013a0523ca0616f62698d.exe
2736 784d1f5c2ef013a0523ca0616f62698d.exe
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:

784d1f5c2ef013a0523ca0616f62698d.exe

description pid process target process

PID 3540 set thread context of 2736 3540 784d1f5c2ef013a0523ca0616f62698d.exe 784d1f5c2ef013a0523ca0616f62698d.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 3540 set thread context of 2736	3540	784d1f5c2ef013a0523ca0616f62698d.exe	784d1f5c2ef013a0523ca0616f62698d.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:

784d1f5c2ef013a0523ca0616f62698d.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	784d1f5c2ef013a0523ca0616f62698d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	784d1f5c2ef013a0523ca0616f62698d.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3712 timeout.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3212 taskkill.exe

pid	process
3712	timeout.exe

pid	process
3212	taskkill.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

784d1f5c2ef013a0523ca0616f62698d.exe

description	ioc	process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	784d1f5c2ef013a0523ca0616f62698d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	784d1f5c2ef013a0523ca0616f62698d.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

784d1f5c2ef013a0523ca0616f62698d.exe

pid	process
2736	784d1f5c2ef013a0523ca0616f62698d.exe
2736	784d1f5c2ef013a0523ca0616f62698d.exe
2736	784d1f5c2ef013a0523ca0616f62698d.exe
2736	784d1f5c2ef013a0523ca0616f62698d.exe
2736	784d1f5c2ef013a0523ca0616f62698d.exe
2736	784d1f5c2ef013a0523ca0616f62698d.exe
2736	784d1f5c2ef013a0523ca0616f62698d.exe
2736	784d1f5c2ef013a0523ca0616f62698d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 3212 taskkill.exe

description	pid	process
Token: SeDebugPrivilege	3212	taskkill.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

784d1f5c2ef013a0523ca0616f62698d.exe784d1f5c2ef013a0523ca0616f62698d.execmd.exe

description	pid	process	target process
PID 3540 wrote to memory of 2736	3540	784d1f5c2ef013a0523ca0616f62698d.exe	784d1f5c2ef013a0523ca0616f62698d.exe
PID 3540 wrote to memory of 2736	3540	784d1f5c2ef013a0523ca0616f62698d.exe	784d1f5c2ef013a0523ca0616f62698d.exe
PID 3540 wrote to memory of 2736	3540	784d1f5c2ef013a0523ca0616f62698d.exe	784d1f5c2ef013a0523ca0616f62698d.exe
PID 3540 wrote to memory of 2736	3540	784d1f5c2ef013a0523ca0616f62698d.exe	784d1f5c2ef013a0523ca0616f62698d.exe
PID 3540 wrote to memory of 2736	3540	784d1f5c2ef013a0523ca0616f62698d.exe	784d1f5c2ef013a0523ca0616f62698d.exe
PID 3540 wrote to memory of 2736	3540	784d1f5c2ef013a0523ca0616f62698d.exe	784d1f5c2ef013a0523ca0616f62698d.exe
PID 3540 wrote to memory of 2736	3540	784d1f5c2ef013a0523ca0616f62698d.exe	784d1f5c2ef013a0523ca0616f62698d.exe
PID 3540 wrote to memory of 2736	3540	784d1f5c2ef013a0523ca0616f62698d.exe	784d1f5c2ef013a0523ca0616f62698d.exe
PID 2736 wrote to memory of 1548	2736	784d1f5c2ef013a0523ca0616f62698d.exe	cmd.exe
PID 2736 wrote to memory of 1548	2736	784d1f5c2ef013a0523ca0616f62698d.exe	cmd.exe
PID 2736 wrote to memory of 1548	2736	784d1f5c2ef013a0523ca0616f62698d.exe	cmd.exe
PID 1548 wrote to memory of 3212	1548	cmd.exe	taskkill.exe
PID 1548 wrote to memory of 3212	1548	cmd.exe	taskkill.exe
PID 1548 wrote to memory of 3212	1548	cmd.exe	taskkill.exe
PID 1548 wrote to memory of 3712	1548	cmd.exe	timeout.exe
PID 1548 wrote to memory of 3712	1548	cmd.exe	timeout.exe
PID 1548 wrote to memory of 3712	1548	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\784d1f5c2ef013a0523ca0616f62698d.exe
"C:\Users\Admin\AppData\Local\Temp\784d1f5c2ef013a0523ca0616f62698d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3540

C:\Users\Admin\AppData\Local\Temp\784d1f5c2ef013a0523ca0616f62698d.exe
C:\Users\Admin\AppData\Local\Temp\784d1f5c2ef013a0523ca0616f62698d.exe
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2736

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im 784d1f5c2ef013a0523ca0616f62698d.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\784d1f5c2ef013a0523ca0616f62698d.exe" & del C:\ProgramData\*.dll & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:1548

C:\Windows\SysWOW64\taskkill.exe
taskkill /im 784d1f5c2ef013a0523ca0616f62698d.exe /f
4⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3212

C:\Windows\SysWOW64\timeout.exe
timeout /t 6
4⤵
- Delays execution with timeout.exe
PID:3712

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

1

T1130

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\freebl3.dll
MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
C:\ProgramData\mozglue.dll
MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
C:\ProgramData\msvcp140.dll
MD5
109f0f02fd37c84bfc7508d4227d7ed5

SHA1
ef7420141bb15ac334d3964082361a460bfdb975

SHA256
334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

SHA512
46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

Download Submit
C:\ProgramData\nss3.dll
MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
C:\ProgramData\softokn3.dll
MD5
a2ee53de9167bf0d6c019303b7ca84e5

SHA1
2a3c737fa1157e8483815e98b666408a18c0db42

SHA256
43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

SHA512
45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

Download Submit
C:\ProgramData\vcruntime140.dll
MD5
7587bf9cb4147022cd5681b015183046

SHA1
f2106306a8f6f0da5afb7fc765cfa0757ad5a628

SHA256
c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

SHA512
0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

Download Submit
\ProgramData\mozglue.dll
MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\ProgramData\nss3.dll
MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
memory/1548-125-0x0000000000000000-mapping.dmp

Download
memory/2736-122-0x0000000000400000-0x00000000004A1000-memory.dmp

Filesize
644KB

Download
memory/2736-121-0x000000000046B77D-mapping.dmp

Download
memory/2736-120-0x0000000000400000-0x00000000004A1000-memory.dmp

Filesize
644KB

Download
memory/3212-126-0x0000000000000000-mapping.dmp

Download
memory/3540-119-0x0000000003400000-0x0000000003401000-memory.dmp

Filesize
4KB

Download
memory/3540-114-0x0000000000F60000-0x0000000000F61000-memory.dmp

Filesize
4KB

Download
memory/3540-118-0x00000000060C0000-0x00000000060C1000-memory.dmp

Filesize
4KB

Download
memory/3540-117-0x00000000033E0000-0x00000000033E1000-memory.dmp

Filesize
4KB

Download
memory/3540-116-0x00000000059E0000-0x00000000059E1000-memory.dmp

Filesize
4KB

Download
memory/3712-127-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads