798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587

General

Target
jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe
Size 28KB
Sample260925-2lnetsyy6j
SHA256 798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587
MD5 56fefee89b5cdb5872af16abab448330
SHA1 7d77bb1508177e9cee868a3c3b226e0056fd3c94
SHA512 934870b774359738bc618a6b28db09788d010caf651cc1e15eff0af70e7c2025df1d9af866d988fcd12b1d09db3a5bb34f9b20401d70b9528e87803798f2020a
SSDEEP 384:XYjU89fOp+1SJT2r9W5viJyGomBdGl5bY8vfbdpKzU2U4Q4mg0A:r2mc1SJYIa1r85bYSjQUebme
TLSH
T1A0D25B263646C4A3C38A01753965DA7A97B97E354A91E846F7917F8A39F40C3A138F03
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution 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\mjcizkda.dll = "{2876D76C-CAAA-4313-AF97-8D1D9A2A1087}"	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe

Loads dropped DLL 1 IoCs

pid	Process
828	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\mjcizkda.tmp	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe
File opened for modification	C:\Windows\SysWOW64\mjcizkda.tmp	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe
File opened for modification	C:\Windows\SysWOW64\mjcizkda.nls	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
2328	cmd.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	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2876D76C-CAAA-4313-AF97-8D1D9A2A1087}	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2876D76C-CAAA-4313-AF97-8D1D9A2A1087}\InProcServer32	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2876D76C-CAAA-4313-AF97-8D1D9A2A1087}\InProcServer32\ = "C:\\Windows\\SysWow64\\mjcizkda.dll"	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2876D76C-CAAA-4313-AF97-8D1D9A2A1087}\InProcServer32\ThreadingModel = "Apartment"	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
828	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe
828	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
828	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe
828	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe
828	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 828 wrote to memory of 2328	828	jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe	91

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_798255af3ef72df79366939aeebd6cc2c9038da827d2d84addfec331423ba587.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:828
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\1321.tmp.bat
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2328

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

1321.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\1321.tmp.bat
Size 271B
SHA256 5d14196f11737d33150da3fb5463b43b2bd1365cd392c1572c8a0e84035f6188
MD5 4353ce07d2b84ccfa00031fd8e208796
SHA1 82e9e498830d001f4a72151a408171b5d8fd5685
SHA512 44646c433cedd34867d86c8e9fbbfa2c876a998f177b3c56dae9a05d73260ccc49802a1e0da478e884baabd6bb09c93a4bc95a28b282c2b8c1f11e2b59b98d8c
TLSH
T17ED02B81894A8AA13634DAD786306B498B104DB6AF49AB0C71BA458721FA018B9D1245
MD5 SHA1 SHA512 TLSH

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mjcizkda.tmp

Path C:\Windows\SysWOW64\mjcizkda.tmp
Size 2.4MB
SHA256 9255f312f5aab54c7ad8d651bd0c4b5b758ea07c109c27d64f445628d7bfba63
MD5 e1d25c6133541cd17f3d710908e12c9f
SHA1 c5b638ebbee7e3ffccbe8eec92c95ca126873818
SHA512 c6f3c45fcafa73537e18a1ee991b46be704d3d03bf53e80cd39ef770a63358087aeeb3bf9a302882ba32d8026a1b39968187de5f586ca68aafb548ed0920a6ae
SSDEEP 49152:9z6DMPCMTbzdZEm+G6qGJ2f3iRfX9/GZDCBywcLen7QDx:EQP1vF+T52fSR5UDjLe7Q9
TLSH
T1C2B53303755CF4A2D5AAC3B62513C3029B311D7FADD0DC709AFEBE2A46C05972B2A712
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/828-13-0x0000000010000000-0x0000000010009000-memory.dmp

Download

memory/828-18-0x0000000010000000-0x0000000010009000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads