dcf51fc0fb014fdbecd6f10f76297796167a79cff663a65302d8ca0b252d69ce

General

Target

873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe
Size

14KB
MD5

873c4bd6b287e83b3ccf5a03638945bc
SHA1

6ff057ccc778e9ddaca3e12630371478dc0fce47
SHA256

dcf51fc0fb014fdbecd6f10f76297796167a79cff663a65302d8ca0b252d69ce
SHA512

2a9fef81bba6ac2dfcc92c3bfacd57a5286698f496ba805c625379cef41662ed2caba9a19258f3f5f13e42c423cb84d278ce4e3cdf017875fa55bc6dd4cdee7a
SSDEEP

384:7wAV8wyvdRoGLawZWfR/Xpyx++YK1Dw28wZExb:JEdFLrmxXpo++YKJB8wQb

Score

10^/10

discovery persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\wrvxvxhe.dll = "{F0930A2F-D971-4828-8209-B7DFD266ED44}"	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2136	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1736	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\wrvxvxhe.tmp	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wrvxvxhe.tmp	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wrvxvxhe.nls	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F0930A2F-D971-4828-8209-B7DFD266ED44}	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F0930A2F-D971-4828-8209-B7DFD266ED44}\InProcServer32	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F0930A2F-D971-4828-8209-B7DFD266ED44}\InProcServer32\ = "C:\\Windows\\SysWow64\\wrvxvxhe.dll"	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F0930A2F-D971-4828-8209-B7DFD266ED44}\InProcServer32\ThreadingModel = "Apartment"	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1736	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1736	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe
1736	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe
1736	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2136	1736	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe	29
PID 1736 wrote to memory of 2136	1736	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe	29
PID 1736 wrote to memory of 2136	1736	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe	29
PID 1736 wrote to memory of 2136	1736	873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe	29

C:\Users\Admin\AppData\Local\Temp\873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\873c4bd6b287e83b3ccf5a03638945bc_JaffaCakes118.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\1268.tmp.bat
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\1268.tmp.bat

Filesize
207B

MD5
4dd9ca3e9300443eb637a185bf4bd2af

SHA1
1ec27fba4a6c1790dcd459ffb32bfbc7063fcc66

SHA256
87619be7575f228ae9730bb48a90b31e257f5ad33bf6017c5f84fca08db58450

SHA512
27b7317cd723a83d59dfeac44540dfead1be371eee8b7275d684a460c6c124c6c79908c8295c1bb6a20945fd624b8c39a084cfaae1039caf092d7bc1c35889bb

Download Submit
C:\Windows\SysWOW64\wrvxvxhe.nls

Filesize
428B

MD5
b88af31278f3f4193fe357f63784beb6

SHA1
cf34b6b1dfe201fdeb9f22994ab277cb1010643d

SHA256
026aaa3aef5bcdc7f526721ff1f9a808739f55a06273be6fb81327d644b02aeb

SHA512
92f920c4896af443580326c21d04d8637cdf03f90a9807736cc9e8f30d0b6ff8e1f73652af46fbd6d5b3e331674813d0e1e3c2deb820ac035de0db2309cca56b

Download Submit
\Windows\SysWOW64\wrvxvxhe.dll

Filesize
2.2MB

MD5
0810963bd5ffcea6a21b129910145704

SHA1
5c205e08306dbd685b91ad0bbf36558b3c0c6f9e

SHA256
df29452686bf6e0c490c1d10ea008d6f480360211c71327928d8da2a636df9e0

SHA512
24c670f7d894fa8509a0b9c55f10e8fc6a0589373299c33a30a4bee71f3c49d8224bfc7f41731894e40f90c57facfc408c013a9f0c5951dc38a995aa80f34b84

Download Submit
memory/1736-16-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/1736-25-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads