djvu | a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3

Analysis

max time kernel
122s
max time network
128s
platform
windows10_x64
resource
win10v20210410
submitted
03/05/2021, 01:16

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General

Target
a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe
Size 762KB
Sample210503-xcsqnygewx
SHA256 a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3
MD5 d09ae1e8fcbf74bbed3ae6b78f88774e
SHA1 33626c43f90a2f0ff4fd8fb05ed9ff4eb7d90711
SHA512 166d39b9ed691e0f3d4cc03492b2c28259d8b4a1ca9f575413ec1fb64a34b6fb994297039d6ef358765d27ceab5f9282c6c925d02455194c072db2f34a99f165
MD5 SHA1 SHA512

Score

10^/10

djvu vidar discovery evasion persistence ransomware spyware stealer

Malware Config

Signatures

Deletes Windows Defender Definitions 2 TTPs 1 IoCs

Uses mpcmdrun utility to delete all AV definitions.

evasion

Impair Defenses

T1562

Command-Line Interface

T1059

pid	Process
1220	mpcmdrun.exe

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Disables Task Manager via registry modification
evasion
Downloads MZ/PE file

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	updatewin2.exe

Executes dropped EXE 4 IoCs

pid	Process
196	updatewin1.exe
3872	updatewin2.exe
3268	5.exe
1132	updatewin1.exe

Loads dropped DLL 2 IoCs

pid	Process
3268	5.exe
3268	5.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3264	icacls.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\cc630d4a-9cd5-4e4d-b456-a8de6a9996c3\\a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe\" --AutoStart"	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe

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

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
11	api.2ip.ua
12	api.2ip.ua
21	api.2ip.ua

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

System Information Discovery
T1082

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	5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2996	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3844	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\D1EB23A46D17D68FD92564C2F1F1601764D8E349	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
1808	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe
1808	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe
3724	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe
3724	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe
3268	5.exe
3268	5.exe
3268	5.exe
3268	5.exe
3268	5.exe
3268	5.exe
3268	5.exe
3268	5.exe
3212	powershell.exe
3212	powershell.exe
3212	powershell.exe
3212	powershell.exe
516	powershell.exe
516	powershell.exe
516	powershell.exe
1056	powershell.exe
1056	powershell.exe
1056	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3844	taskkill.exe
Token: SeDebugPrivilege	3212	powershell.exe
Token: SeDebugPrivilege	516	powershell.exe
Token: SeDebugPrivilege	1056	powershell.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1808 wrote to memory of 3264	1808	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	78
PID 1808 wrote to memory of 3264	1808	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	78
PID 1808 wrote to memory of 3264	1808	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	78
PID 1808 wrote to memory of 3724	1808	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	79
PID 1808 wrote to memory of 3724	1808	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	79
PID 1808 wrote to memory of 3724	1808	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	79
PID 3724 wrote to memory of 196	3724	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	81
PID 3724 wrote to memory of 196	3724	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	81
PID 3724 wrote to memory of 196	3724	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	81
PID 3724 wrote to memory of 3872	3724	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	82
PID 3724 wrote to memory of 3872	3724	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	82
PID 3724 wrote to memory of 3872	3724	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	82
PID 3724 wrote to memory of 3268	3724	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	84
PID 3724 wrote to memory of 3268	3724	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	84
PID 3724 wrote to memory of 3268	3724	a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe	84
PID 196 wrote to memory of 1132	196	updatewin1.exe	85
PID 196 wrote to memory of 1132	196	updatewin1.exe	85
PID 196 wrote to memory of 1132	196	updatewin1.exe	85
PID 3268 wrote to memory of 1632	3268	5.exe	86
PID 3268 wrote to memory of 1632	3268	5.exe	86
PID 3268 wrote to memory of 1632	3268	5.exe	86
PID 1632 wrote to memory of 3844	1632	cmd.exe	88
PID 1632 wrote to memory of 3844	1632	cmd.exe	88
PID 1632 wrote to memory of 3844	1632	cmd.exe	88
PID 1632 wrote to memory of 2996	1632	cmd.exe	89
PID 1632 wrote to memory of 2996	1632	cmd.exe	89
PID 1632 wrote to memory of 2996	1632	cmd.exe	89
PID 1132 wrote to memory of 3212	1132	updatewin1.exe	90
PID 1132 wrote to memory of 3212	1132	updatewin1.exe	90
PID 1132 wrote to memory of 3212	1132	updatewin1.exe	90
PID 1132 wrote to memory of 516	1132	updatewin1.exe	92
PID 1132 wrote to memory of 516	1132	updatewin1.exe	92
PID 1132 wrote to memory of 516	1132	updatewin1.exe	92
PID 516 wrote to memory of 1056	516	powershell.exe	94
PID 516 wrote to memory of 1056	516	powershell.exe	94
PID 516 wrote to memory of 1056	516	powershell.exe	94
PID 1132 wrote to memory of 1220	1132	updatewin1.exe	96
PID 1132 wrote to memory of 1220	1132	updatewin1.exe	96
PID 1132 wrote to memory of 1496	1132	updatewin1.exe	98
PID 1132 wrote to memory of 1496	1132	updatewin1.exe	98
PID 1132 wrote to memory of 1496	1132	updatewin1.exe	98

C:\Users\Admin\AppData\Local\Temp\a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe
"C:\Users\Admin\AppData\Local\Temp\a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe"
1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1808
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\cc630d4a-9cd5-4e4d-b456-a8de6a9996c3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  PID:3264
- C:\Users\Admin\AppData\Local\Temp\a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe
  "C:\Users\Admin\AppData\Local\Temp\a0e32603876c3035d76a78e35d5f89576ded2475451b4d27e19331bf9e6abfc3.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3724
- - C:\Users\Admin\AppData\Local\02621eb5-e4fb-42ec-a394-7ab898f6e1ad\updatewin1.exe
    "C:\Users\Admin\AppData\Local\02621eb5-e4fb-42ec-a394-7ab898f6e1ad\updatewin1.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:196
  - - C:\Users\Admin\AppData\Local\02621eb5-e4fb-42ec-a394-7ab898f6e1ad\updatewin1.exe
      "C:\Users\Admin\AppData\Local\02621eb5-e4fb-42ec-a394-7ab898f6e1ad\updatewin1.exe" --Admin
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:1132
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -Command Set-ExecutionPolicy -Scope CurrentUser RemoteSigned
        5⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3212
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -NoProfile -ExecutionPolicy Bypass -Command "& {Start-Process PowerShell -ArgumentList '-NoProfile -ExecutionPolicy Bypass -File ""C:\Users\Admin\AppData\Local\script.ps1""' -Verb RunAs}"
        5⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:516
      - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\script.ps1
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1056
    - - C:\Program Files\Windows Defender\mpcmdrun.exe
        
        "C:\Program Files\Windows Defender\mpcmdrun.exe" -removedefinitions -all
        5⤵
        Deletes Windows Defender Definitions
        
        PID:1220
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat""
        5⤵
        
        PID:1496
- - C:\Users\Admin\AppData\Local\02621eb5-e4fb-42ec-a394-7ab898f6e1ad\updatewin2.exe
    "C:\Users\Admin\AppData\Local\02621eb5-e4fb-42ec-a394-7ab898f6e1ad\updatewin2.exe"
    3⤵
    - Drops file in Drivers directory
    - Executes dropped EXE
    PID:3872
- - C:\Users\Admin\AppData\Local\02621eb5-e4fb-42ec-a394-7ab898f6e1ad\5.exe
    "C:\Users\Admin\AppData\Local\02621eb5-e4fb-42ec-a394-7ab898f6e1ad\5.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3268
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im 5.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\02621eb5-e4fb-42ec-a394-7ab898f6e1ad\5.exe" & del C:\ProgramData\*.dll & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1632
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im 5.exe /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3844
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout /t 6
        5⤵
        Delays execution with timeout.exe
        
        PID:2996

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Impair Defenses

T1562

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

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Downloads

memory/196-140-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/516-220-0x00000000046F2000-0x00000000046F3000-memory.dmp

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memory/516-219-0x00000000046F0000-0x00000000046F1000-memory.dmp

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memory/516-232-0x00000000046F3000-0x00000000046F4000-memory.dmp

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memory/1056-236-0x000000007E050000-0x000000007E051000-memory.dmp

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memory/1056-237-0x0000000004993000-0x0000000004994000-memory.dmp

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memory/1056-234-0x0000000004992000-0x0000000004993000-memory.dmp

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memory/1056-233-0x0000000004990000-0x0000000004991000-memory.dmp

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memory/1132-154-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/1808-115-0x0000000000400000-0x00000000008B7000-memory.dmp

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memory/1808-114-0x0000000002560000-0x000000000267A000-memory.dmp

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memory/3212-155-0x0000000005380000-0x0000000005381000-memory.dmp

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memory/3212-153-0x0000000008320000-0x0000000008321000-memory.dmp

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memory/3212-180-0x00000000098E0000-0x00000000098E1000-memory.dmp

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memory/3212-181-0x0000000009CA0000-0x0000000009CA1000-memory.dmp

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memory/3212-174-0x0000000009770000-0x0000000009771000-memory.dmp

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memory/3212-167-0x0000000009790000-0x00000000097C3000-memory.dmp

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memory/3212-218-0x0000000005386000-0x0000000005388000-memory.dmp

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memory/3212-217-0x0000000005383000-0x0000000005384000-memory.dmp

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memory/3212-159-0x00000000089E0000-0x00000000089E1000-memory.dmp

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memory/3212-158-0x0000000008A60000-0x0000000008A61000-memory.dmp

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memory/3212-157-0x0000000007A60000-0x0000000007A61000-memory.dmp

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memory/3212-148-0x0000000005220000-0x0000000005221000-memory.dmp

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memory/3212-149-0x0000000007BD0000-0x0000000007BD1000-memory.dmp

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memory/3212-150-0x0000000007940000-0x0000000007941000-memory.dmp

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memory/3212-151-0x0000000007AC0000-0x0000000007AC1000-memory.dmp

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memory/3212-152-0x0000000007B30000-0x0000000007B31000-memory.dmp

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memory/3212-175-0x000000007E9F0000-0x000000007E9F1000-memory.dmp

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memory/3212-156-0x0000000005382000-0x0000000005383000-memory.dmp

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memory/3268-134-0x0000000000740000-0x00000000007D7000-memory.dmp

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memory/3268-135-0x0000000000400000-0x00000000004F9000-memory.dmp

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memory/3724-124-0x0000000000400000-0x00000000008B7000-memory.dmp

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memory/3872-141-0x0000000000400000-0x000000000044D000-memory.dmp

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