5867305033836997a9a7a9e61ae8a6c1eb60ae37a490a3dc86c643a67dc3ef58

Analysis

max time kernel
65s
max time network
147s
platform
windows10_x64
resource
win10v20201028
submitted
10-03-2021 23:24

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General

Target

dubi.exew.exe
Size

740KB
MD5

2301df3722a9635294c12b9208f5a155
SHA1

fb70e885511d04c3bd07e20d5adb24c70a92f440
SHA256

5867305033836997a9a7a9e61ae8a6c1eb60ae37a490a3dc86c643a67dc3ef58
SHA512

1ce4138c98ea55fb4a024ebe8214b6f620f9995a85b9582df187c3c4781661b85ed36c32f9e8a50623944e5bf8531a5771c985d29add4eb906dac08f8ae45048

Score

8^/10

discovery persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

updatewin.exe5.exe

pid process

3996 updatewin.exe
420 5.exe
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

1036 icacls.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

pid	process
3996	updatewin.exe
420	5.exe

pid	process
1036	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

dubi.exew.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f77daaf7-41d2-4af5-98a8-6c01d80e14b4\\dubi.exew.exe\" --AutoStart"	dubi.exew.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.

Processes:

flow ioc

21 api.2ip.ua
10 api.2ip.ua
11 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
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

208 420 WerFault.exe 5.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3236 timeout.exe

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

pid	pid_target	process	target process
208	420	WerFault.exe	5.exe

pid	process
3236	timeout.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

dubi.exew.exe

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

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

dubi.exew.exedubi.exew.exeWerFault.exe

pid	process
1108	dubi.exew.exe
1108	dubi.exew.exe
3616	dubi.exew.exe
3616	dubi.exew.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 208 WerFault.exe
Token: SeBackupPrivilege 208 WerFault.exe
Token: SeDebugPrivilege 208 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	208	WerFault.exe
Token: SeBackupPrivilege	208	WerFault.exe
Token: SeDebugPrivilege	208	WerFault.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

dubi.exew.exedubi.exew.exeupdatewin.execmd.exe

description	pid	process	target process
PID 1108 wrote to memory of 1036	1108	dubi.exew.exe	icacls.exe
PID 1108 wrote to memory of 1036	1108	dubi.exew.exe	icacls.exe
PID 1108 wrote to memory of 1036	1108	dubi.exew.exe	icacls.exe
PID 1108 wrote to memory of 3616	1108	dubi.exew.exe	dubi.exew.exe
PID 1108 wrote to memory of 3616	1108	dubi.exew.exe	dubi.exew.exe
PID 1108 wrote to memory of 3616	1108	dubi.exew.exe	dubi.exew.exe
PID 3616 wrote to memory of 3996	3616	dubi.exew.exe	updatewin.exe
PID 3616 wrote to memory of 3996	3616	dubi.exew.exe	updatewin.exe
PID 3616 wrote to memory of 3996	3616	dubi.exew.exe	updatewin.exe
PID 3616 wrote to memory of 420	3616	dubi.exew.exe	5.exe
PID 3616 wrote to memory of 420	3616	dubi.exew.exe	5.exe
PID 3616 wrote to memory of 420	3616	dubi.exew.exe	5.exe
PID 3996 wrote to memory of 1352	3996	updatewin.exe	cmd.exe
PID 3996 wrote to memory of 1352	3996	updatewin.exe	cmd.exe
PID 3996 wrote to memory of 1352	3996	updatewin.exe	cmd.exe
PID 1352 wrote to memory of 3236	1352	cmd.exe	timeout.exe
PID 1352 wrote to memory of 3236	1352	cmd.exe	timeout.exe
PID 1352 wrote to memory of 3236	1352	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\dubi.exew.exe
"C:\Users\Admin\AppData\Local\Temp\dubi.exew.exe"
1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\f77daaf7-41d2-4af5-98a8-6c01d80e14b4" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  PID:1036
- C:\Users\Admin\AppData\Local\Temp\dubi.exew.exe
  "C:\Users\Admin\AppData\Local\Temp\dubi.exew.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3616
- - C:\Users\Admin\AppData\Local\bc261e48-32db-4ba7-ab25-23b6a5df27e4\updatewin.exe
    "C:\Users\Admin\AppData\Local\bc261e48-32db-4ba7-ab25-23b6a5df27e4\updatewin.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:3996
  - - C:\Windows\SysWOW64\cmd.exe
      /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\bc261e48-32db-4ba7-ab25-23b6a5df27e4\updatewin.exe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1352
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout /t 3
        5⤵
        Delays execution with timeout.exe
        
        PID:3236
- - C:\Users\Admin\AppData\Local\bc261e48-32db-4ba7-ab25-23b6a5df27e4\5.exe
    "C:\Users\Admin\AppData\Local\bc261e48-32db-4ba7-ab25-23b6a5df27e4\5.exe"
    3⤵
    - Executes dropped EXE
    PID:420
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 420 -s 1436
      4⤵
      Program crash
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:208

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

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

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

MD5
4c9af35a7edd6351ed1b0369aa5fdaad

SHA1
a31deacfdba98949799105169f460234a356d1b6

SHA256
272b1eae7ab0152427b63c9f44b954394ce8e69b39e60f4d768b00b1d6365d6c

SHA512
928cc4be39b1dca84af72b09067b1553ce04cac8020aba3e2f37023fb396a792ddacde4d68121d4736311aa8dd761fcc161f52224d243ae68cd6d5f6fe8a038d

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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

MD5
a4f1a3227ff7283cc8dd2f9e68025e12

SHA1
67c2de733b15f65c5157a6d495534ebdd00311c2

SHA256
f0e3107fe54fa10875ee7b53675713b6835c31e21d4f2c6c00880fa1b7166982

SHA512
3d66e1cc35685bb0ceac80e368b0743582046f3d3a6566486aeb4f956473f17dde1ef1dbd6a584ef2492e6bf0555068e0d672fa34194a6b9f37a19134670f10e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

MD5
1e6addf961f8b25bd0482b2ee7f12ead

SHA1
ef427a1b97e3ce6e6b9afc0e335bfceba7125b52

SHA256
a9a04d2b03b5a5957e9b1a54ad06fc67b56678b9de9eb5e8ee1ee340e3705984

SHA512
bab72ffa3bc308eaef4568f72d11df6572b871127c718b9d3a3da1a95b06e6e48f6a662024b723d3ffee0ca17a26786fbac432a72492b07b1db471d73961a0a5

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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

MD5
107416f2bdcebc0464cf542c2fb021ea

SHA1
f525a251435f8c4cb2f8e4fba56592cbc2542478

SHA256
087a71cba4ebede2372e602a5954748b093933fa33e04ef357e619a8c6dde9e7

SHA512
889ca98246a64965ea60360bb834d35fb1d69731ed844db4ad467741b4eb8d8b26bd7d4a1c15108b66a9865b0e1a4371a1e37dd570f0a04192b57940ed70148e

Download Submit
C:\Users\Admin\AppData\Local\bc261e48-32db-4ba7-ab25-23b6a5df27e4\5.exe

MD5
6a50d5e91b193be284aa02106ee35e97

SHA1
097137cb64eb18ce55c13f1e841d5312d07fbbf4

SHA256
82c1ccbd7db7615a982f7b8072784575972aff3f0ab4597efda9d2e7ca17b961

SHA512
7f79ef4c3b2cd32e6e1fe6c64d1a693115789665f705144cb912500f25f669f28ac61f709d29057b66bf2a6c1f8376b3a8ef7ccb95668cabf2d15455745f1f03

Download Submit
C:\Users\Admin\AppData\Local\bc261e48-32db-4ba7-ab25-23b6a5df27e4\5.exe

MD5
6a50d5e91b193be284aa02106ee35e97

SHA1
097137cb64eb18ce55c13f1e841d5312d07fbbf4

SHA256
82c1ccbd7db7615a982f7b8072784575972aff3f0ab4597efda9d2e7ca17b961

SHA512
7f79ef4c3b2cd32e6e1fe6c64d1a693115789665f705144cb912500f25f669f28ac61f709d29057b66bf2a6c1f8376b3a8ef7ccb95668cabf2d15455745f1f03

Download Submit
C:\Users\Admin\AppData\Local\bc261e48-32db-4ba7-ab25-23b6a5df27e4\updatewin.exe

MD5
9010fa92cc83afe00fab38703e6ffa77

SHA1
4d603ec27d02d84a65d1555c2df0896d7675fafc

SHA256
38e6f4d8f53e8a38950594d9588cb00218bf46113c51b5241771181a521b9c75

SHA512
a39ea249da189fedd5f8d1c13d03693626c70ba08c69c4ec76396d3475c5480e98c8dba1da0b74089252d8d781fc050e4eed9346b648ccbb42e22cf6d15399e8

Download Submit
C:\Users\Admin\AppData\Local\bc261e48-32db-4ba7-ab25-23b6a5df27e4\updatewin.exe

MD5
9010fa92cc83afe00fab38703e6ffa77

SHA1
4d603ec27d02d84a65d1555c2df0896d7675fafc

SHA256
38e6f4d8f53e8a38950594d9588cb00218bf46113c51b5241771181a521b9c75

SHA512
a39ea249da189fedd5f8d1c13d03693626c70ba08c69c4ec76396d3475c5480e98c8dba1da0b74089252d8d781fc050e4eed9346b648ccbb42e22cf6d15399e8

Download Submit
C:\Users\Admin\AppData\Local\f77daaf7-41d2-4af5-98a8-6c01d80e14b4\dubi.exew.exe

MD5
2301df3722a9635294c12b9208f5a155

SHA1
fb70e885511d04c3bd07e20d5adb24c70a92f440

SHA256
5867305033836997a9a7a9e61ae8a6c1eb60ae37a490a3dc86c643a67dc3ef58

SHA512
1ce4138c98ea55fb4a024ebe8214b6f620f9995a85b9582df187c3c4781661b85ed36c32f9e8a50623944e5bf8531a5771c985d29add4eb906dac08f8ae45048

Download Submit
memory/208-21-0x0000000004D50000-0x0000000004D51000-memory.dmp

Filesize
4KB

Download
memory/420-18-0x0000000000000000-mapping.dmp

Download
memory/1036-3-0x0000000000000000-mapping.dmp

Download
memory/1108-2-0x0000000003420000-0x0000000003421000-memory.dmp

Filesize
4KB

Download
memory/1108-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1108-4-0x0000000003220000-0x000000000333A000-memory.dmp

Filesize
1.1MB

Download
memory/1352-22-0x0000000000000000-mapping.dmp

Download
memory/3236-23-0x0000000000000000-mapping.dmp

Download
memory/3616-14-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3616-8-0x00000000031A0000-0x00000000031A1000-memory.dmp

Filesize
4KB

Download
memory/3616-7-0x0000000000000000-mapping.dmp

Download
memory/3996-15-0x0000000000000000-mapping.dmp

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