9250ac11a64d8b0c49faf2d3e1e5c54d40dc2906b2a8469e88f1ffeaa77d5422

General

Target

89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe
Size

122KB
MD5

89f101e06d26b7690b486cdd3a7c21e8
SHA1

326447d234a49498230856aef9814b54fe55baa1
SHA256

9250ac11a64d8b0c49faf2d3e1e5c54d40dc2906b2a8469e88f1ffeaa77d5422
SHA512

df28ee76c80c2ff62ac68356176b86be8fb1f1332c9bb428268a447d9b07e5ea0506b9b8f3f744de5e0f88a83cc25832dca8d1db35baf2d03f00a4b02c877f69
SSDEEP

3072:gmD/Kn45L572ZWJu93zGUoSF3g6X8J4jlM6ZDqDZfB5FrGjp:jg+iZ7F370kqz6jp

Score

8^/10

defense_evasion discovery persistence vmprotect

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\drivers\beep.sys	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MediaCenter\Parameters\ServiceDll = "C:\\Windows\\system32\\RkmbtkC.dll"	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2760	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
2628	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe
2484	svchost.exe

VMProtect packed file 4 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral1/memory/2628-2-0x0000000000400000-0x000000000043D000-memory.dmp	vmprotect
behavioral1/memory/2628-0-0x0000000000400000-0x000000000043D000-memory.dmp	vmprotect
behavioral1/files/0x0008000000018bc7-6.dat	vmprotect
behavioral1/memory/2628-10-0x0000000000400000-0x000000000043D000-memory.dmp	vmprotect

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\RkmbtkC.dll	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2628	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2628	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe
2628	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
472	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2628	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 2760	2628	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe	33
PID 2628 wrote to memory of 2760	2628	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe	33
PID 2628 wrote to memory of 2760	2628	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe	33
PID 2628 wrote to memory of 2760	2628	89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\89f101e06d26b7690b486cdd3a7c21e8_JaffaCakes118.exe"
1⤵
- Drops file in Drivers directory
- Server Software Component: Terminal Services DLL
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\89F101~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2760

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k krnlsrvc
1⤵
PID:2296

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k krnlsrvc
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:2484

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

Privilege Escalation

Defense Evasion

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Windows\SysWOW64\RkmbtkC.dll

Filesize
73KB

MD5
4c15b69b0b3b3752f5c3b1ced56887cb

SHA1
2ec8b7d24a4eaf928c1985886742709dcf8121d7

SHA256
04414e68b2d485105d65f319ff0437bed02bcd6a7059c5df6be6a29ca91a4a5e

SHA512
24f66ee66b494bdf11236ade92ed54805d3caff55d8ed82d0d4d472c5de3ce01c2b63c878decf1e7731efbb474cfc24202f9c567f87ce0c71523d959be143053

Download Submit
memory/2628-2-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/2628-0-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/2628-10-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download

Analysis

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