0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14

General

Target

0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Size

84KB
MD5

56e307adec814c43eecbc8f2efcec038
SHA1

c0cef3c35367dc4c1dfde7f167d2d28eaef39e7c
SHA256

0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14
SHA512

fa5707f4120de5d73044966cb71ff4d1f5e84be941db1cb5f502d124fd25195092cd7c1417b6ae5ccddb261263263b7bc105d84f288b4a6c0cd02122497429d1
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOw0SH010P9:GhfxHNIreQm+Hi70SH010P9

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2052	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.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	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
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

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
File created	C:\Windows\SysWOW64\¢«.exe	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
File created	C:\Windows\system\rundll32.exe	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1693542667"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1693542667"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2052	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
2052	rundll32.exe
2052	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2456 wrote to memory of 2052	2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe	28
PID 2456 wrote to memory of 2052	2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe	28
PID 2456 wrote to memory of 2052	2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe	28
PID 2456 wrote to memory of 2052	2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe	28
PID 2456 wrote to memory of 2052	2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe	28
PID 2456 wrote to memory of 2052	2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe	28
PID 2456 wrote to memory of 2052	2456	0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe	28

C:\Users\Admin\AppData\Local\Temp\0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe
"C:\Users\Admin\AppData\Local\Temp\0c99b8c9d74abcbc7d5914055f34656bf20b8e76a3079ec3006e3bcc20618b14.exe"
1⤵
- Loads dropped DLL
- Modifies system executable filetype association
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Windows\system\rundll32.exe
  C:\Windows\system\rundll32.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2052

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\notepad¢¬.exe

Filesize
73KB

MD5
d2c0dd76e05e3ed2106089468b2d65a2

SHA1
642967312de7e370e19515651b6cb460bec6e87e

SHA256
13cd0eb0d1b9065937173ff5e79f8b5088e0690d65e60d3782a491366697d2e3

SHA512
8e9c96fe25347aa869797e0ceba8adf0d74ad34a76a24e4fb9eb23dfdfe521b130802e3b2c8ee303f365b2bce51e70ff7bd211645c0c20b79a7ceba5d0dfc69a

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

Filesize
83KB

MD5
aef4c3f30881f64cdd89134398aaf94d

SHA1
cf0a16ee21983e16881bd903b01c6d4f3b749d8c

SHA256
62453ad1002d19fe0b83198cc7119ed901a85b1d4f7e1c5e70a709a5d3e4f7cf

SHA512
ca3e3830841a47690ec31c90d1a663884ca34363d03dc2b0255c7170949133411d34fd619878781ca5da502bec9a65ec24bf5934fb48d0bfa1c2e307c27da8d0

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

Filesize
83KB

MD5
aef4c3f30881f64cdd89134398aaf94d

SHA1
cf0a16ee21983e16881bd903b01c6d4f3b749d8c

SHA256
62453ad1002d19fe0b83198cc7119ed901a85b1d4f7e1c5e70a709a5d3e4f7cf

SHA512
ca3e3830841a47690ec31c90d1a663884ca34363d03dc2b0255c7170949133411d34fd619878781ca5da502bec9a65ec24bf5934fb48d0bfa1c2e307c27da8d0

Download Submit
\Windows\system\rundll32.exe

Filesize
83KB

MD5
aef4c3f30881f64cdd89134398aaf94d

SHA1
cf0a16ee21983e16881bd903b01c6d4f3b749d8c

SHA256
62453ad1002d19fe0b83198cc7119ed901a85b1d4f7e1c5e70a709a5d3e4f7cf

SHA512
ca3e3830841a47690ec31c90d1a663884ca34363d03dc2b0255c7170949133411d34fd619878781ca5da502bec9a65ec24bf5934fb48d0bfa1c2e307c27da8d0

Download Submit
\Windows\system\rundll32.exe

Filesize
83KB

MD5
aef4c3f30881f64cdd89134398aaf94d

SHA1
cf0a16ee21983e16881bd903b01c6d4f3b749d8c

SHA256
62453ad1002d19fe0b83198cc7119ed901a85b1d4f7e1c5e70a709a5d3e4f7cf

SHA512
ca3e3830841a47690ec31c90d1a663884ca34363d03dc2b0255c7170949133411d34fd619878781ca5da502bec9a65ec24bf5934fb48d0bfa1c2e307c27da8d0

Download Submit
memory/2052-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2052-23-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2456-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2456-12-0x0000000000390000-0x00000000003A6000-memory.dmp

Filesize
88KB

Download
memory/2456-17-0x0000000000390000-0x00000000003A6000-memory.dmp

Filesize
88KB

Download
memory/2456-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2456-22-0x0000000000390000-0x0000000000392000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads