c8834d89ebd16eb6b37d06ed80825ffce32dda1b51f6401acbdd6907a1bcb04e

Analysis

max time kernel
149s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
09/01/2024, 03:32

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General

Target

4d3a626dca7fdbe017997e25b73b013a.exe
Size

39KB
MD5

4d3a626dca7fdbe017997e25b73b013a
SHA1

0429e15dd2290b846667a019577ad9a3ad0daf47
SHA256

c8834d89ebd16eb6b37d06ed80825ffce32dda1b51f6401acbdd6907a1bcb04e
SHA512

ba034f3c0dd28847d3173284ffd5a24f9c78bca92138f7ee7b0be491212e8e0dbe7d3a624f73dd19a31cb2a5cd842983647b107123d2ef60905337a587aaaecf
SSDEEP

768:3E48+muntVSRZPjMIvqC9ZFerykdnlIEVB/NmBq+J6wviLZqMAU:D8at4M8bFerykdlIEp2q4GLcMAU

Score

8^/10

persistence

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	4d3a626dca7fdbe017997e25b73b013a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\dlmcjjcdfc = "C:\\Windows\\system\\jjxzwzjy090115.exe"	4d3a626dca7fdbe017997e25b73b013a.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\jjxzajcj32dl.dll	4d3a626dca7fdbe017997e25b73b013a.exe
File created	C:\Windows\system\jjxzajcj32dl.dll	4d3a626dca7fdbe017997e25b73b013a.exe
File created	C:\Windows\system\jjxzwzjy090115.exe	4d3a626dca7fdbe017997e25b73b013a.exe
File opened for modification	C:\Windows\system\jjxzwzjy090115.exe	4d3a626dca7fdbe017997e25b73b013a.exe

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2767779354"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "411536172"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2767779354"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31081132"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2831530894"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31081132"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{CF7F9EE8-AE9F-11EE-B6AD-DE9D3A49EF0E} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Check_Associations = "no"	4d3a626dca7fdbe017997e25b73b013a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\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
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31081132"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4420	4d3a626dca7fdbe017997e25b73b013a.exe
4420	4d3a626dca7fdbe017997e25b73b013a.exe
4420	4d3a626dca7fdbe017997e25b73b013a.exe
4420	4d3a626dca7fdbe017997e25b73b013a.exe
4420	4d3a626dca7fdbe017997e25b73b013a.exe
4420	4d3a626dca7fdbe017997e25b73b013a.exe
4420	4d3a626dca7fdbe017997e25b73b013a.exe
4420	4d3a626dca7fdbe017997e25b73b013a.exe
4420	4d3a626dca7fdbe017997e25b73b013a.exe
4420	4d3a626dca7fdbe017997e25b73b013a.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4420	4d3a626dca7fdbe017997e25b73b013a.exe
Token: SeDebugPrivilege	4420	4d3a626dca7fdbe017997e25b73b013a.exe
Token: SeDebugPrivilege	4420	4d3a626dca7fdbe017997e25b73b013a.exe
Token: SeDebugPrivilege	4420	4d3a626dca7fdbe017997e25b73b013a.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1660	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1660	iexplore.exe
1660	iexplore.exe
4572	IEXPLORE.EXE
4572	IEXPLORE.EXE
4572	IEXPLORE.EXE
4572	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4420 wrote to memory of 1660	4420	4d3a626dca7fdbe017997e25b73b013a.exe	95
PID 4420 wrote to memory of 1660	4420	4d3a626dca7fdbe017997e25b73b013a.exe	95
PID 1660 wrote to memory of 4572	1660	iexplore.exe	97
PID 1660 wrote to memory of 4572	1660	iexplore.exe	97
PID 1660 wrote to memory of 4572	1660	iexplore.exe	97
PID 4420 wrote to memory of 1660	4420	4d3a626dca7fdbe017997e25b73b013a.exe	95
PID 4420 wrote to memory of 1768	4420	4d3a626dca7fdbe017997e25b73b013a.exe	102
PID 4420 wrote to memory of 1768	4420	4d3a626dca7fdbe017997e25b73b013a.exe	102
PID 4420 wrote to memory of 1768	4420	4d3a626dca7fdbe017997e25b73b013a.exe	102

C:\Users\Admin\AppData\Local\Temp\4d3a626dca7fdbe017997e25b73b013a.exe
"C:\Users\Admin\AppData\Local\Temp\4d3a626dca7fdbe017997e25b73b013a.exe"
1⤵
- Adds policy Run key to start application
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4420
- C:\program files\internet explorer\iexplore.exe
  "C:\program files\internet explorer\iexplore.exe"
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1660
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1660 CREDAT:17410 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:4572
- C:\Windows\SysWOW64\cmd.exe
  cmd /c del "C:\Users\Admin\AppData\Local\Temp\4d3a626dca7fdbe017997e25b73b013a.exe"
  2⤵
  PID:1768

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:\ProgramData\jjjydf16.ini

Filesize
88B

MD5
0d9a1189fadf2c65d99729c1333b02b8

SHA1
4b38e0bc7546b7e71d75059e3dad1c8a5fabfeee

SHA256
feeaf82f5637b4c64f9fc0d550436ad0f5218987d0b973a6271ac287f55c785a

SHA512
9996d8a45e8e955ba0ed71727c05dd56ddbca8d1df1e1822869e8f308fae20ccfd02090813665e441273aa202f84f68ddcf344dea217c70666ccaf988aa4a947

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\L3T8W3B4\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
memory/4420-0-0x0000000000150000-0x0000000000182000-memory.dmp

Filesize
200KB

Download
memory/4420-12-0x0000000000150000-0x0000000000182000-memory.dmp

Filesize
200KB

Download