f51e49451d0889e64ba2b01f0f78ca8ea987564a74211cc412ff0a30706a2985

Analysis

max time kernel
129s
max time network
147s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
21/10/2022, 00:10

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General

Target

f51e49451d0889e64ba2b01f0f78ca8ea987564a74211cc412ff0a30706a2985.dll
Size

327KB
MD5

7cd8de736b4a9c2f44891acbaea34010
SHA1

6596fde5bc34b828706a7ef4ae451aede4b1d855
SHA256

f51e49451d0889e64ba2b01f0f78ca8ea987564a74211cc412ff0a30706a2985
SHA512

9bdfe621060010990e7f1e590daba96e8c7607e52bc6d0798a3ab71ed052d32f1399fe19a1f68b50996765d1e798e35cc520eadf7e0b778b748fb9650926bad7
SSDEEP

6144:DmCFZs3GYQSgeeNMPaZRupn+aZGVXpEqI2JX6gAy/Aw8:DmoZxEc8B+XLEqIeX6gAy/M

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1316	rundll32mgr.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1316-63-0x0000000000400000-0x0000000000496000-memory.dmp	upx
behavioral1/memory/1316-65-0x0000000000400000-0x0000000000496000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1284	rundll32.exe
1284	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 34 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	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\IETld\LowMic	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\LowRegistry\DOMStorage	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 (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	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
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff3d0000003d000000c3040000a2020000	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\BrowserEmulation\LowMic	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 (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\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "373095666"	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\PageSetup	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	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\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff5600000000000000dc04000065020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff6f00000019000000f50400007e020000	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\LowRegistry\DontShowMeThisDialogAgain	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
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{88FC8B71-5102-11ED-9ECC-C253C434FFA8} = "0"	iexplore.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1316	rundll32mgr.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1092	iexplore.exe
1092	iexplore.exe
1092	iexplore.exe
1092	iexplore.exe

Suspicious use of SetWindowsHookEx 22 IoCs

pid	Process
1092	iexplore.exe
1092	iexplore.exe
560	IEXPLORE.EXE
560	IEXPLORE.EXE
560	IEXPLORE.EXE
560	IEXPLORE.EXE
1092	iexplore.exe
1092	iexplore.exe
2024	IEXPLORE.EXE
2024	IEXPLORE.EXE
2024	IEXPLORE.EXE
2024	IEXPLORE.EXE
1092	iexplore.exe
1092	iexplore.exe
1092	iexplore.exe
1092	iexplore.exe
1764	IEXPLORE.EXE
1764	IEXPLORE.EXE
572	IEXPLORE.EXE
572	IEXPLORE.EXE
1764	IEXPLORE.EXE
1764	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 1284	1768	rundll32.exe	27
PID 1768 wrote to memory of 1284	1768	rundll32.exe	27
PID 1768 wrote to memory of 1284	1768	rundll32.exe	27
PID 1768 wrote to memory of 1284	1768	rundll32.exe	27
PID 1768 wrote to memory of 1284	1768	rundll32.exe	27
PID 1768 wrote to memory of 1284	1768	rundll32.exe	27
PID 1768 wrote to memory of 1284	1768	rundll32.exe	27
PID 1284 wrote to memory of 1316	1284	rundll32.exe	28
PID 1284 wrote to memory of 1316	1284	rundll32.exe	28
PID 1284 wrote to memory of 1316	1284	rundll32.exe	28
PID 1284 wrote to memory of 1316	1284	rundll32.exe	28
PID 1316 wrote to memory of 1092	1316	rundll32mgr.exe	29
PID 1316 wrote to memory of 1092	1316	rundll32mgr.exe	29
PID 1316 wrote to memory of 1092	1316	rundll32mgr.exe	29
PID 1316 wrote to memory of 1092	1316	rundll32mgr.exe	29
PID 1092 wrote to memory of 560	1092	iexplore.exe	31
PID 1092 wrote to memory of 560	1092	iexplore.exe	31
PID 1092 wrote to memory of 560	1092	iexplore.exe	31
PID 1092 wrote to memory of 560	1092	iexplore.exe	31
PID 1316 wrote to memory of 620	1316	rundll32mgr.exe	32
PID 1316 wrote to memory of 620	1316	rundll32mgr.exe	32
PID 1316 wrote to memory of 620	1316	rundll32mgr.exe	32
PID 1316 wrote to memory of 620	1316	rundll32mgr.exe	32
PID 1092 wrote to memory of 2024	1092	iexplore.exe	33
PID 1092 wrote to memory of 2024	1092	iexplore.exe	33
PID 1092 wrote to memory of 2024	1092	iexplore.exe	33
PID 1092 wrote to memory of 2024	1092	iexplore.exe	33
PID 1316 wrote to memory of 1884	1316	rundll32mgr.exe	35
PID 1316 wrote to memory of 1884	1316	rundll32mgr.exe	35
PID 1316 wrote to memory of 1884	1316	rundll32mgr.exe	35
PID 1316 wrote to memory of 1884	1316	rundll32mgr.exe	35
PID 1316 wrote to memory of 2008	1316	rundll32mgr.exe	36
PID 1316 wrote to memory of 2008	1316	rundll32mgr.exe	36
PID 1316 wrote to memory of 2008	1316	rundll32mgr.exe	36
PID 1316 wrote to memory of 2008	1316	rundll32mgr.exe	36
PID 1092 wrote to memory of 1764	1092	iexplore.exe	38
PID 1092 wrote to memory of 1764	1092	iexplore.exe	38
PID 1092 wrote to memory of 1764	1092	iexplore.exe	38
PID 1092 wrote to memory of 1764	1092	iexplore.exe	38
PID 1092 wrote to memory of 572	1092	iexplore.exe	37
PID 1092 wrote to memory of 572	1092	iexplore.exe	37
PID 1092 wrote to memory of 572	1092	iexplore.exe	37
PID 1092 wrote to memory of 572	1092	iexplore.exe	37

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f51e49451d0889e64ba2b01f0f78ca8ea987564a74211cc412ff0a30706a2985.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f51e49451d0889e64ba2b01f0f78ca8ea987564a74211cc412ff0a30706a2985.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1284
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1316
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1092
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1092 CREDAT:275457 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:560
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1092 CREDAT:275472 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2024
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1092 CREDAT:734218 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:572
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1092 CREDAT:603145 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1764
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      PID:620
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      PID:1884
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      PID:2008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\CY3EBTNG.txt

Filesize
603B

MD5
b07ad2be4d9f18e654230f54cd47c965

SHA1
81b0c0581abe12e8339a1b56c2d187e958fc5654

SHA256
eeee055a800161939f136afcbc791473f62f5d7a52f7b43bbd2b8862c5e77673

SHA512
462205746a7a01801012889052b1a0a6ec349f400886964d8adf26180b88fc38506dcebaf843b116bf51ead8bd4d5c80b92ae0d05cf3e2e46e12b5e0e1ef2bee

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
192KB

MD5
72864b90643b2ff7a3e4c06b03ad2ce7

SHA1
52f60736728362514dec7880f67009408bf744da

SHA256
c0dc483d5d52f102a46125ba7b79757cf535aaf6075ff1bf0b255243d0b88c43

SHA512
b6f2abb30dedc588601324a203f348f453443a28de2a82b16ae175621471126680bf239e502e5c4f848955a6031e211976a3aa24eaa9e1e56b06c30916a23bf2

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
192KB

MD5
72864b90643b2ff7a3e4c06b03ad2ce7

SHA1
52f60736728362514dec7880f67009408bf744da

SHA256
c0dc483d5d52f102a46125ba7b79757cf535aaf6075ff1bf0b255243d0b88c43

SHA512
b6f2abb30dedc588601324a203f348f453443a28de2a82b16ae175621471126680bf239e502e5c4f848955a6031e211976a3aa24eaa9e1e56b06c30916a23bf2

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
192KB

MD5
72864b90643b2ff7a3e4c06b03ad2ce7

SHA1
52f60736728362514dec7880f67009408bf744da

SHA256
c0dc483d5d52f102a46125ba7b79757cf535aaf6075ff1bf0b255243d0b88c43

SHA512
b6f2abb30dedc588601324a203f348f453443a28de2a82b16ae175621471126680bf239e502e5c4f848955a6031e211976a3aa24eaa9e1e56b06c30916a23bf2

Download Submit
memory/1284-55-0x0000000075931000-0x0000000075933000-memory.dmp

Filesize
8KB

Download
memory/1284-61-0x0000000010000000-0x0000000010056000-memory.dmp

Filesize
344KB

Download
memory/1316-62-0x0000000001F40000-0x0000000002030000-memory.dmp

Filesize
960KB

Download
memory/1316-63-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/1316-65-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download