c14a7fe8781ce2ae0b4473b11020fe21f4493d601c3331d05417d470365c95fe

General

Target

f9aab61631b81ae917d1d69ce2c9254c_JaffaCakes118.dll
Size

22KB
MD5

f9aab61631b81ae917d1d69ce2c9254c
SHA1

d394c6f786e12ad976dbf8c4344129a5092ac3b5
SHA256

c14a7fe8781ce2ae0b4473b11020fe21f4493d601c3331d05417d470365c95fe
SHA512

c9b3244971b900af5c4460a591846f0058ada6d9fbe2cd3bd22e657820453c38b596437013d469969b66fe12ee6dd4990e6adc2529de0efb1957cb210396b34e
SSDEEP

384:SXW2vD5qZZ/NWR2slOKbKy8g5l0CJffGOxDvafUxiJb0YNflwXKy00DBd8:Sm21E/NudX0QGOZvWl00G6MDBd8

Score

8^/10

bootkit persistence

Malware Config

Signatures

Drops file in Drivers directory 2 IoCs

Processes:

regsvr32.exesvchost.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Drivers\beep.sys	regsvr32.exe
File opened for modification	C:\Windows\SysWOW64\Drivers\beep.sys	svchost.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

regsvr32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NetDDEdsd\Parameters\ServiceDll = "C:\\Windows\\system32\\DnwwgJOBjytxRh.dll"	regsvr32.exe

Loads dropped DLL 1 IoCs

Processes:

svchost.exe

pid process

3004 svchost.exe
Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.

Query Registry
T1012

Peripheral Device Discovery
T1120

System Information Discovery
T1082

Processes:

svchost.exe

description ioc process

File opened (read-only) \??\A: svchost.exe
File opened (read-only) \??\B: svchost.exe
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

svchost.exe

description ioc process

File opened for modification \??\PhysicalDrive0 svchost.exe

pid	process
3004	svchost.exe

description	ioc	process
File opened (read-only)	\??\A:	svchost.exe
File opened (read-only)	\??\B:	svchost.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	svchost.exe

Drops file in System32 directory 5 IoCs

Processes:

svchost.exeregsvr32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	svchost.exe
File opened for modification	C:\Windows\SysWOW64\DnwwgJOBjytxRh.dll	regsvr32.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	svchost.exe

Modifies data under HKEY_USERS 8 IoCs

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	svchost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

regsvr32.exe

pid process

3080 regsvr32.exe
3080 regsvr32.exe
Suspicious behavior: LoadsDriver 4 IoCs

Processes:

pid process

664
664
664
664
Suspicious behavior: RenamesItself 1 IoCs

Processes:

regsvr32.exe

pid process

3080 regsvr32.exe

pid	process
3080	regsvr32.exe
3080	regsvr32.exe

pid	process
664
664
664
664

pid	process
3080	regsvr32.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

regsvr32.exesvchost.exe

description	pid	process
Token: SeDebugPrivilege	3080	regsvr32.exe
Token: SeLoadDriverPrivilege	3080	regsvr32.exe
Token: SeDebugPrivilege	3080	regsvr32.exe
Token: SeLoadDriverPrivilege	3080	regsvr32.exe
Token: SeShutdownPrivilege	3080	regsvr32.exe
Token: SeDebugPrivilege	3004	svchost.exe
Token: SeLoadDriverPrivilege	3004	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

regsvr32.exe

description	pid	process	target process
PID 3892 wrote to memory of 3080	3892	regsvr32.exe	regsvr32.exe
PID 3892 wrote to memory of 3080	3892	regsvr32.exe	regsvr32.exe
PID 3892 wrote to memory of 3080	3892	regsvr32.exe	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f9aab61631b81ae917d1d69ce2c9254c_JaffaCakes118.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3892

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\f9aab61631b81ae917d1d69ce2c9254c_JaffaCakes118.dll
2⤵
- Drops file in Drivers directory
- Sets DLL path for service in the registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
PID:3080

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k NetDDEdsd
1⤵
- Drops file in Drivers directory
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:3004

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1312 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
1⤵
PID:232

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Windows\SysWOW64\DnwwgJOBjytxRh.dll
Filesize
22KB

MD5
f9aab61631b81ae917d1d69ce2c9254c

SHA1
d394c6f786e12ad976dbf8c4344129a5092ac3b5

SHA256
c14a7fe8781ce2ae0b4473b11020fe21f4493d601c3331d05417d470365c95fe

SHA512
c9b3244971b900af5c4460a591846f0058ada6d9fbe2cd3bd22e657820453c38b596437013d469969b66fe12ee6dd4990e6adc2529de0efb1957cb210396b34e

Download Submit
C:\Windows\SysWOW64\drivers\beep.sys
Filesize
2KB

MD5
1205579c3ffc1dea6ef8fd3efd694ea6

SHA1
4902deb7ab384e52dafc2a55dacfee29075e4051

SHA256
ad3cf744b1f96c9cad423992feb183f05df17eb251e938a9de239306d652154c

SHA512
d9fc3877a1779fd9d8b9d4caf47e5fe6dbf18826b8eeb3a5059e1df745ea339dd48227af8396435349f7277a8649eb1d51d1b2d2488a71838c6e54fe4bc16c02

Download Submit
memory/3004-13-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download
memory/3004-12-0x0000000000E00000-0x0000000000E27000-memory.dmp

Filesize
156KB

Download
memory/3004-14-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download
memory/3004-15-0x0000000000E30000-0x0000000000E70000-memory.dmp

Filesize
256KB

Download
memory/3004-22-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download
memory/3004-23-0x0000000000E30000-0x0000000000E70000-memory.dmp

Filesize
256KB

Download
memory/3080-5-0x0000000002DD0000-0x0000000002DD1000-memory.dmp

Filesize
4KB

Download
memory/3080-4-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download
memory/3080-2-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download
memory/3080-3-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download
memory/3080-1-0x0000000001370000-0x0000000001397000-memory.dmp

Filesize
156KB

Download
memory/3080-0-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads