c9140a8fd466c10bd2466652dae663abef2317123b63978de81a2a42ace00216

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
27/06/2024, 18:05

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General

Target

16fa5e482c1d2a6dad70add297aa64f8_JaffaCakes118.exe
Size

83KB
MD5

16fa5e482c1d2a6dad70add297aa64f8
SHA1

8d956d97985eb7682d86af3b25fbc76314ed1ae5
SHA256

c9140a8fd466c10bd2466652dae663abef2317123b63978de81a2a42ace00216
SHA512

86366d5c243c2a5f4ae5dc744fe880453e0c8a85e9ef92fa2777900ee93deeeeecfec9cc986801db7c3dcc0c67fc8be8007ca7e3f9c224546b9479072d6cdd5d
SSDEEP

1536:nbYY64hVFv3InPDnTDo66f7C5ZKLZHiSuLOhb544po:nbYX8H/IPT0f7eKI7aW

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4512	Vyfrfm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Vyfrfm = "C:\\Users\\Admin\\AppData\\Roaming\\Vyfrfm.exe"	16fa5e482c1d2a6dad70add297aa64f8_JaffaCakes118.exe

Modifies Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31115452"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31115452"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31115452"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3326285063"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3326128864"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3324567020"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{F1AE9F13-34AF-11EF-B1BA-FA8F9E8C279D} = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31115452"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "426276550"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3324567020"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4016	16fa5e482c1d2a6dad70add297aa64f8_JaffaCakes118.exe
4016	16fa5e482c1d2a6dad70add297aa64f8_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4512	Vyfrfm.exe
Token: SeDebugPrivilege	4524	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3800	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3800	IEXPLORE.EXE
3800	IEXPLORE.EXE
4524	IEXPLORE.EXE
4524	IEXPLORE.EXE
4524	IEXPLORE.EXE
4524	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4016 wrote to memory of 4512	4016	16fa5e482c1d2a6dad70add297aa64f8_JaffaCakes118.exe	93
PID 4016 wrote to memory of 4512	4016	16fa5e482c1d2a6dad70add297aa64f8_JaffaCakes118.exe	93
PID 4016 wrote to memory of 4512	4016	16fa5e482c1d2a6dad70add297aa64f8_JaffaCakes118.exe	93
PID 4512 wrote to memory of 3284	4512	Vyfrfm.exe	96
PID 4512 wrote to memory of 3284	4512	Vyfrfm.exe	96
PID 4512 wrote to memory of 3284	4512	Vyfrfm.exe	96
PID 3284 wrote to memory of 3800	3284	iexplore.exe	97
PID 3284 wrote to memory of 3800	3284	iexplore.exe	97
PID 3800 wrote to memory of 4524	3800	IEXPLORE.EXE	98
PID 3800 wrote to memory of 4524	3800	IEXPLORE.EXE	98
PID 3800 wrote to memory of 4524	3800	IEXPLORE.EXE	98
PID 4512 wrote to memory of 4524	4512	Vyfrfm.exe	98
PID 4512 wrote to memory of 4524	4512	Vyfrfm.exe	98

C:\Users\Admin\AppData\Local\Temp\16fa5e482c1d2a6dad70add297aa64f8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\16fa5e482c1d2a6dad70add297aa64f8_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4016
- C:\Users\Admin\AppData\Roaming\Vyfrfm.exe
  "C:\Users\Admin\AppData\Roaming\Vyfrfm.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4512
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3284
  - - 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:3800
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3800 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:4524

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv
1⤵
PID:1244

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
fa34ecb8815a2d98849888cb1cdbf38b

SHA1
84fd0e04586009efb3683c98da8d9aa41487cd42

SHA256
5077a54924f80491a74ed78bbd73ff7bf85a27caddb80ceaa9ccb86f8b9a11be

SHA512
ccfdb76ccedd0076601e17272d346229e2b9c0dd884c09bb7701b32c5dc177da8a91bb539ce751297d8ea44716fc497e8a337a9499c93a474ba85915f28f1053

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
404B

MD5
51805fb50ebb9e604e153ab714de1a4b

SHA1
5ea3ffcf35b5d33be67821a03f02e1cccf58b367

SHA256
1a56498dd33898bf047af80d9c5c6b22f86949b6cea8f01b45fb78de39483e69

SHA512
8090ae5721c16b8107b74c966770342d253a0dcbf38aa98fd96e469e61562397399b20da27a3d308ccb428178866b7d22f5abaacdd3564f558c1dc9629a3e3b4

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verFD6B.tmp

Filesize
15KB

MD5
1a545d0052b581fbb2ab4c52133846bc

SHA1
62f3266a9b9925cd6d98658b92adec673cbe3dd3

SHA256
557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

SHA512
bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\4NMOWK91\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Users\Admin\AppData\Roaming\Vyfrfm.exe

Filesize
83KB

MD5
16fa5e482c1d2a6dad70add297aa64f8

SHA1
8d956d97985eb7682d86af3b25fbc76314ed1ae5

SHA256
c9140a8fd466c10bd2466652dae663abef2317123b63978de81a2a42ace00216

SHA512
86366d5c243c2a5f4ae5dc744fe880453e0c8a85e9ef92fa2777900ee93deeeeecfec9cc986801db7c3dcc0c67fc8be8007ca7e3f9c224546b9479072d6cdd5d

Download Submit
memory/4016-12-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4016-0-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4016-3-0x0000000000720000-0x0000000000732000-memory.dmp

Filesize
72KB

Download
memory/4016-4-0x0000000000790000-0x0000000000791000-memory.dmp

Filesize
4KB

Download
memory/4016-5-0x0000000000401000-0x000000000040E000-memory.dmp

Filesize
52KB

Download
memory/4016-1-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4512-14-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4512-13-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4512-16-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4512-17-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download