4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
01-12-2022 08:46

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General

Target

4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.exe
Size

58KB
MD5

1de64e1cf2bda73ede782673333d0e70
SHA1

5854fff0080e6d800f4dfebd0612f0b14b923882
SHA256

4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4
SHA512

e66f07b9d2a16355f61b2e8992408b6f08c8156b135b07fd9dd5f8777f28dc577f1b2e60bdb0c7abb05d7760a53b9889f21fd581a8fbb7e480b3749ba8d4933a
SSDEEP

768:+Hf+S26Iyfvcse5kzId8rH7R1fkGhg2QiGPL6QNcD3fTOZXKhB0q:yIyfvdzId8j7MGyPOZzTO6B0q

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2008	explore.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x000500000000b2d2-55.dat	upx
behavioral1/files/0x000500000000b2d2-56.dat	upx
behavioral1/files/0x000500000000b2d2-58.dat	upx
behavioral1/memory/992-60-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral1/memory/2008-61-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral1/memory/2008-62-0x0000000000400000-0x0000000000410000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
2008	explore.exe

Loads dropped DLL 2 IoCs

pid	Process
992	4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.exe
992	4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\explore = "\"C:\\Windows\\system32\\explore.exe\""	explore.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\explore.exe	4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.exe
File opened for modification	C:\Windows\SysWOW64\explore.exe	4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.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 52 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = f06e6e232307d901	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{735E15F1-7316-11ED-BBEB-FA28CBED7ACF} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000009a2cc920e8d8414383bac0819da2015700000000020000000000106600000001000020000000fb2b0d634656cc1461add0cb7937b7c198ec33027170095846850e9fe38f2692000000000e8000000002000020000000c9203805157c18efd3e5abbd93f827435d80693c6c4c76f013e7422ff336c60420000000d48127b759936ccf9eea73d808788f17e18f4100b52f311e067b049fee584c0b40000000cb79697380d7cb03d7e904beeb6c2ad40c29038c385541022940c1a584273ef5a1334e2d236b4648e2d786fca8c182060f7c865be0e08c0ea1b9b824aa9d5405	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{44C3AA71-7316-11ED-BBEB-FA28CBED7ACF} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
992	4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.exe
2008	explore.exe

Suspicious use of FindShellTrayWindow 17 IoCs

pid	Process
108	iexplore.exe
108	iexplore.exe
108	iexplore.exe
108	iexplore.exe
108	iexplore.exe
108	iexplore.exe
108	iexplore.exe
108	iexplore.exe
108	iexplore.exe
808	iexplore.exe
808	iexplore.exe
808	iexplore.exe
808	iexplore.exe
808	iexplore.exe
808	iexplore.exe
808	iexplore.exe
808	iexplore.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
108	iexplore.exe
108	iexplore.exe
1608	IEXPLORE.EXE
1608	IEXPLORE.EXE
808	iexplore.exe
808	iexplore.exe
836	IEXPLORE.EXE
836	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 992 wrote to memory of 2008	992	4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.exe	27
PID 992 wrote to memory of 2008	992	4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.exe	27
PID 992 wrote to memory of 2008	992	4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.exe	27
PID 992 wrote to memory of 2008	992	4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.exe	27
PID 108 wrote to memory of 1608	108	iexplore.exe	30
PID 108 wrote to memory of 1608	108	iexplore.exe	30
PID 108 wrote to memory of 1608	108	iexplore.exe	30
PID 108 wrote to memory of 1608	108	iexplore.exe	30
PID 1608 wrote to memory of 580	1608	IEXPLORE.EXE	32
PID 1608 wrote to memory of 580	1608	IEXPLORE.EXE	32
PID 1608 wrote to memory of 580	1608	IEXPLORE.EXE	32
PID 1608 wrote to memory of 580	1608	IEXPLORE.EXE	32
PID 808 wrote to memory of 836	808	iexplore.exe	34
PID 808 wrote to memory of 836	808	iexplore.exe	34
PID 808 wrote to memory of 836	808	iexplore.exe	34
PID 808 wrote to memory of 836	808	iexplore.exe	34

C:\Users\Admin\AppData\Local\Temp\4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.exe
"C:\Users\Admin\AppData\Local\Temp\4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:992
- C:\Windows\SysWOW64\explore.exe
  "C:\Windows\system32\explore.exe" -UPD step3 C:\Users\Admin\AppData\Local\Temp\4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4.exe|C:\Windows\system32\explore.exe
  2⤵
  - Executes dropped EXE
  - Deletes itself
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  PID:2008

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:108
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:108 CREDAT:275457 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1608
- - C:\Windows\SysWOW64\ctfmon.exe
    ctfmon.exe
    3⤵
    PID:580

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:808
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:808 CREDAT:275457 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:836

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:\Windows\SysWOW64\explore.exe

Filesize
58KB

MD5
1de64e1cf2bda73ede782673333d0e70

SHA1
5854fff0080e6d800f4dfebd0612f0b14b923882

SHA256
4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4

SHA512
e66f07b9d2a16355f61b2e8992408b6f08c8156b135b07fd9dd5f8777f28dc577f1b2e60bdb0c7abb05d7760a53b9889f21fd581a8fbb7e480b3749ba8d4933a

Download Submit
\Windows\SysWOW64\explore.exe

Filesize
58KB

MD5
1de64e1cf2bda73ede782673333d0e70

SHA1
5854fff0080e6d800f4dfebd0612f0b14b923882

SHA256
4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4

SHA512
e66f07b9d2a16355f61b2e8992408b6f08c8156b135b07fd9dd5f8777f28dc577f1b2e60bdb0c7abb05d7760a53b9889f21fd581a8fbb7e480b3749ba8d4933a

Download Submit
\Windows\SysWOW64\explore.exe

Filesize
58KB

MD5
1de64e1cf2bda73ede782673333d0e70

SHA1
5854fff0080e6d800f4dfebd0612f0b14b923882

SHA256
4b362a137f2a9759d152709b96db895cae84f0f96bfa747a374161d613e181c4

SHA512
e66f07b9d2a16355f61b2e8992408b6f08c8156b135b07fd9dd5f8777f28dc577f1b2e60bdb0c7abb05d7760a53b9889f21fd581a8fbb7e480b3749ba8d4933a

Download Submit
memory/992-54-0x0000000076561000-0x0000000076563000-memory.dmp

Filesize
8KB

Download
memory/992-60-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2008-61-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2008-62-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download