af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e

General

Target

af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
Size

84KB
MD5

6d7a8d38b9461ac7c8dba1ffcb8630c7
SHA1

04057f1ac24d48350300bbde6db8ce0a2a1fddfa
SHA256

af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e
SHA512

226fd15021c8432288294b263beb703f43d908cf03374e398394c0c3cf5a45c81f095b85a9d43be3ab186b3ae7d07f2f6ced22aed3cd5f5b29b28680da4484c8
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWO/FRpfKcy:GhfxHNIreQm+HiAFRpfKcy

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2716	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\notepad¢¬.exe	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
File created	C:\Windows\SysWOW64\¢«.exe	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
File created	C:\Windows\system\rundll32.exe	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.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	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1724893715"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1724893715"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2716	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
2716	rundll32.exe
2716	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 2716	2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe	30
PID 2664 wrote to memory of 2716	2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe	30
PID 2664 wrote to memory of 2716	2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe	30
PID 2664 wrote to memory of 2716	2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe	30
PID 2664 wrote to memory of 2716	2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe	30
PID 2664 wrote to memory of 2716	2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe	30
PID 2664 wrote to memory of 2716	2664	af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe	30

C:\Users\Admin\AppData\Local\Temp\af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe
"C:\Users\Admin\AppData\Local\Temp\af101bc70777a9b72ce5f5db4774aca2b57df9344b9e6317b3f80a2cf8d3f30e.exe"
1⤵
- Loads dropped DLL
- Modifies system executable filetype association
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2664
- C:\Windows\system\rundll32.exe
  C:\Windows\system\rundll32.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

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:\Windows\SysWOW64\notepad¢¬.exe

Filesize
78KB

MD5
0ff34cbac571e167e7322441ff8ccf70

SHA1
f3639771f0a768df37441b29f86515d7b5788851

SHA256
1d247a3ccf4901aa9e308f7bcf291a8ba6be9446028a364a665d6d1139109cb5

SHA512
cdb10301c9f5b994213e7f822fc3e1bc4cc1fc8ba9674ee6eb49bd0bc78326798a97a8e2af986d593012d9e0e1f8b98aab6fccf35ee3e4e9703c99ff324dcca7

Download Submit
C:\Windows\system\rundll32.exe

Filesize
73KB

MD5
9a50ed7382a9a43db765b9a1d3178c36

SHA1
39b0ca19abcd1da515d7c60f0445e2b9f328f8e7

SHA256
5813191a130374b34eb806c5a7c5d3f7f2af0bba493e30f2c917bccea30cbd80

SHA512
e2a858b991f478d3c4cf295347a8c6cff985a4c73dd5ae69362a86d9fa750e6c6684fbe039c20e7a74c4ee0d70d9adaac004e1a2915263b93387bb7a6454afb9

Download Submit
memory/2664-17-0x0000000000700000-0x0000000000716000-memory.dmp

Filesize
88KB

Download
memory/2664-12-0x0000000000700000-0x0000000000716000-memory.dmp

Filesize
88KB

Download
memory/2664-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2664-21-0x0000000000700000-0x0000000000716000-memory.dmp

Filesize
88KB

Download
memory/2664-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2716-22-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads