538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885

General

Target
jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe
Size 26KB
Sample260924-e64afs1x5j
SHA256 538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885
MD5 2acd9e020d281e7f55766ee1f21ca740
SHA1 b5d5585c93f00dd000e151c7738bcdfefb36869c
SHA512 45534fc2aba2931509aa53ec4183ebe025b92e3d7bf3d020262a272b83ca9ada9379a94209204e80cd17ad43acff9956e344d9373202a803720e5448905f2ea7
SSDEEP 384:rWSLwOlOR+wD72Y0tmbpdJ5Iqkd7H5ahjPZHUaE1K:rsMDwDz0tmbpdYqiZ+jPZ08
TLSH
T1E9C2490736D4E8A3C3961274395A6F1997BDAE3C867CE8AACBD09D8565E00C1F036F17
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\nwapi32dj.dll = "{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}"	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe

Loads dropped DLL 1 IoCs

pid	Process
3904	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\nwapi32dj.tmp	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe
File opened for modification	C:\Windows\SysWOW64\nwapi32dj.tmp	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.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
2768	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	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}\InProcServer32	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}\InProcServer32\ = "C:\\Windows\\SysWow64\\nwapi32dj.dll"	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A2C3BA54-DF75-4881-8EB3-E54B26BBBBC9}\InProcServer32\ThreadingModel = "Apartment"	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3904	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe
3904	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3904	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe
3904	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe
3904	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 3904 wrote to memory of 2768	3904	jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe	90

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_538dcf4729bb4aaf95dc9efda0558d191c08678bd94f412f22c8eb03c0ae9885.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:3904
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\DB14.tmp.bat
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2768

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

DB14.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\DB14.tmp.bat
Size 271B
SHA256 2625968bc90bf3bf87ccaf3154b1fa86ebf7c45fc8111b063d4f86a0b62d7c2a
MD5 4cf951161bd3d95f2a496943640dbf8b
SHA1 24d2285892d3b4c654eed3a67241bcfbc6e1322f
SHA512 9d9feffb53d2e0e3bd9b5625cd5aac91d055b6881995f4708ae9d185e63c626c20a9d4f40afe4cfcf91fa30f5d514e58babef6ea29097a284d143ae32c2ff3b3
TLSH
T153D02BB4A7C20B9E8EE5583F0C39434D5C50957685CE371E022183EE107683E5487198
MD5 SHA1 SHA512 TLSH

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nwapi32dj.dll

Path C:\Windows\SysWOW64\nwapi32dj.dll
Size 2.3MB
SHA256 ad1feb4104866ab928a91d2d968ee3964da320dc1301dafa08a1456f2d61aaad
MD5 f378e6d0c0169ac2b1673950878a206d
SHA1 c9dd37c5f9b43fe94a42b752564bb1371b3b92a5
SHA512 1880406aaefba3c15837079aab599dfaec1b1049540c08e605ec1b6a88cc0bfa15bffa06415989db4e483a81735001d580b1a323408c71cf7bf27f93256c6560
SSDEEP 24576:J9fuTIhRHK3kOHV38/VZotrnL9fBDzr5VDaeToj9ygOVTj3EcD4ZzwFdBV+nY+iA:66Rruxgmrn5fkFOzVBZ/HIs48vzU
TLSH
T1CCB53397EAFC505AE7DEAB3494820844914FB0F5F27DDECF8205BE45F4690A0A1668CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3904-6-0x0000000020000000-0x0000000020009000-memory.dmp

Download

memory/3904-11-0x0000000020000000-0x0000000020009000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads