154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2

Analysis

max time kernel
78s
max time network
148s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
11-10-2022 08:19

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General

Target

154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe
Size

132KB
MD5

789a7c1914f703c8343b8ece91c3a830
SHA1

fc5e2b8079f7a340d437a00652edce1ef851bfae
SHA256

154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2
SHA512

f4b4f99be9c3e0fd4d59152b4622f3b80eb51419bf1a8870f643155eda6a7fad4160c1a1bbc1fa615669601f22f4983cbe3a58d15ff9d099d506c65d0e945627
SSDEEP

1536:wURjsYDtXptH5NwCes0GUEQZwaKH3xm4KZtLsi4mJMo6C:zfx0FKqubP

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1588	Windefend.exe

Deletes itself 1 IoCs

pid	Process
1588	Windefend.exe

Loads dropped DLL 2 IoCs

pid	Process
1976	154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe
1976	154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe

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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Defender = "C:\\Windows\\SysWOW64\\Windefend.exe"	Windefend.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Windefend.exe	154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe
File opened for modification	C:\Windows\SysWOW64\Windefend.exe	154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "372257125"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{263BB031-4962-11ED-B2BF-6651945CA213} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1588	Windefend.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1588	Windefend.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1516	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1516	iexplore.exe
1516	iexplore.exe
1780	IEXPLORE.EXE
1780	IEXPLORE.EXE
1780	IEXPLORE.EXE
1780	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 1588	1976	154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe	27
PID 1976 wrote to memory of 1588	1976	154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe	27
PID 1976 wrote to memory of 1588	1976	154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe	27
PID 1976 wrote to memory of 1588	1976	154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe	27
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1588 wrote to memory of 1516	1588	Windefend.exe	28
PID 1516 wrote to memory of 1780	1516	iexplore.exe	30
PID 1516 wrote to memory of 1780	1516	iexplore.exe	30
PID 1516 wrote to memory of 1780	1516	iexplore.exe	30
PID 1516 wrote to memory of 1780	1516	iexplore.exe	30

C:\Users\Admin\AppData\Local\Temp\154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe
"C:\Users\Admin\AppData\Local\Temp\154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\SysWOW64\Windefend.exe
  "C:\Windows\system32\Windefend.exe" rem "C:\Users\Admin\AppData\Local\Temp\154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2.exe"
  2⤵
  - Executes dropped EXE
  - Deletes itself
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1588
- - C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe"
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1516
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1516 CREDAT:275457 /prefetch:2
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:1780

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\OISAT62Q.txt

Filesize
603B

MD5
14c1cb8bc88b029a61a15a32ff8c81c4

SHA1
6ff44db5547bf0bc801fdf615a159ed94b421e37

SHA256
45b6b13ad03d0107085563658ae86021ed3304ee6082fd1df98c1dee3eae882c

SHA512
a7445f92469834524f70dea3f8d84a34c2738ec3da1db9637730276e1cd058d8bdc38f546b17c3bfd7724479584ab43524c45507ec5f739dd771540912752921

Download Submit
C:\Windows\SysWOW64\Windefend.exe

Filesize
132KB

MD5
789a7c1914f703c8343b8ece91c3a830

SHA1
fc5e2b8079f7a340d437a00652edce1ef851bfae

SHA256
154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2

SHA512
f4b4f99be9c3e0fd4d59152b4622f3b80eb51419bf1a8870f643155eda6a7fad4160c1a1bbc1fa615669601f22f4983cbe3a58d15ff9d099d506c65d0e945627

Download Submit
C:\Windows\SysWOW64\Windefend.exe

Filesize
132KB

MD5
789a7c1914f703c8343b8ece91c3a830

SHA1
fc5e2b8079f7a340d437a00652edce1ef851bfae

SHA256
154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2

SHA512
f4b4f99be9c3e0fd4d59152b4622f3b80eb51419bf1a8870f643155eda6a7fad4160c1a1bbc1fa615669601f22f4983cbe3a58d15ff9d099d506c65d0e945627

Download Submit
\Windows\SysWOW64\Windefend.exe

Filesize
132KB

MD5
789a7c1914f703c8343b8ece91c3a830

SHA1
fc5e2b8079f7a340d437a00652edce1ef851bfae

SHA256
154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2

SHA512
f4b4f99be9c3e0fd4d59152b4622f3b80eb51419bf1a8870f643155eda6a7fad4160c1a1bbc1fa615669601f22f4983cbe3a58d15ff9d099d506c65d0e945627

Download Submit
\Windows\SysWOW64\Windefend.exe

Filesize
132KB

MD5
789a7c1914f703c8343b8ece91c3a830

SHA1
fc5e2b8079f7a340d437a00652edce1ef851bfae

SHA256
154e5fa34521e9bfe276848f77a8be1cd0a751aa5a0e26f04cddaa14963e28c2

SHA512
f4b4f99be9c3e0fd4d59152b4622f3b80eb51419bf1a8870f643155eda6a7fad4160c1a1bbc1fa615669601f22f4983cbe3a58d15ff9d099d506c65d0e945627

Download Submit
memory/1588-62-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/1588-63-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/1976-54-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

Filesize
8KB

Download
memory/1976-55-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download