vidar | ac1bddf60c98cb507f43077da521f73c9c19bea7553beb307fb0d0fa1f356657

Analysis

max time kernel
84s
max time network
83s
platform
windows7_x64
resource
win7v20201028
submitted
08/02/2021, 06:53

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General

Target
1c430e444822fe0167d5b2f50292c425.exe
Size 2.0MB
Sample210208-9pgxng8fjs
SHA256 ac1bddf60c98cb507f43077da521f73c9c19bea7553beb307fb0d0fa1f356657
MD5 1c430e444822fe0167d5b2f50292c425
SHA1 14ff8463fc90b32a28a94a596963a0cd61a47069
SHA512 e8b4eca2d6cadb853da554c0731cbca1be4403423edb1512de99cc1b2ecf550d87b480a459cb36bf9c0bb716a9a04569afca3dbb9835e3e5110c018bb8279f49
MD5 SHA1 SHA512

Score

10^/10

vidar discovery ransomware spyware stealer

Malware Config

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Deletes itself 1 IoCs

pid	Process
1644	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
520	1c430e444822fe0167d5b2f50292c425.exe
520	1c430e444822fe0167d5b2f50292c425.exe
520	1c430e444822fe0167d5b2f50292c425.exe
520	1c430e444822fe0167d5b2f50292c425.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

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

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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 776 set thread context of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29

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	1c430e444822fe0167d5b2f50292c425.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	1c430e444822fe0167d5b2f50292c425.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2016	taskkill.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	1c430e444822fe0167d5b2f50292c425.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	1c430e444822fe0167d5b2f50292c425.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
520	1c430e444822fe0167d5b2f50292c425.exe
520	1c430e444822fe0167d5b2f50292c425.exe
520	1c430e444822fe0167d5b2f50292c425.exe
520	1c430e444822fe0167d5b2f50292c425.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2016	taskkill.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 776 wrote to memory of 520	776	1c430e444822fe0167d5b2f50292c425.exe	29
PID 520 wrote to memory of 1644	520	1c430e444822fe0167d5b2f50292c425.exe	32
PID 520 wrote to memory of 1644	520	1c430e444822fe0167d5b2f50292c425.exe	32
PID 520 wrote to memory of 1644	520	1c430e444822fe0167d5b2f50292c425.exe	32
PID 520 wrote to memory of 1644	520	1c430e444822fe0167d5b2f50292c425.exe	32
PID 1644 wrote to memory of 2016	1644	cmd.exe	34
PID 1644 wrote to memory of 2016	1644	cmd.exe	34
PID 1644 wrote to memory of 2016	1644	cmd.exe	34
PID 1644 wrote to memory of 2016	1644	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\1c430e444822fe0167d5b2f50292c425.exe
"C:\Users\Admin\AppData\Local\Temp\1c430e444822fe0167d5b2f50292c425.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:776
- C:\Users\Admin\AppData\Local\Temp\1c430e444822fe0167d5b2f50292c425.exe
  "{path}"
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:520
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c taskkill /im 1c430e444822fe0167d5b2f50292c425.exe /f & erase C:\Users\Admin\AppData\Local\Temp\1c430e444822fe0167d5b2f50292c425.exe & exit
    3⤵
    - Deletes itself
    - Suspicious use of WriteProcessMemory
    PID:1644
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im 1c430e444822fe0167d5b2f50292c425.exe /f
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:2016

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

T1130

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/520-11-0x0000000000400000-0x000000000048C000-memory.dmp

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memory/520-7-0x0000000000400000-0x000000000048C000-memory.dmp

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memory/520-9-0x0000000076071000-0x0000000076073000-memory.dmp

Download

memory/776-6-0x0000000005A30000-0x0000000005B00000-memory.dmp

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memory/776-2-0x0000000073F20000-0x000000007460E000-memory.dmp

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memory/776-5-0x0000000000750000-0x0000000000754000-memory.dmp

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memory/776-4-0x0000000000A70000-0x0000000000A71000-memory.dmp

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memory/776-3-0x0000000000AE0000-0x0000000000AE1000-memory.dmp

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memory/844-10-0x000007FEF6200000-0x000007FEF647A000-memory.dmp

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