3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470

General

Target

3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
Size

75KB
MD5

e1e60e0613ae563bef30b8102895b16b
SHA1

0f24b0b0e8f74625cf9d90adfde9a96497cb5822
SHA256

3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470
SHA512

881a65b835b0f2a8119348de5c8b114a0ea1fa29e6773cc9b8f3a59a42ac1576648a2b93d2f7919a466a13b324212c77398c2bab4380c7228336f5e1f0bd6098
SSDEEP

768:agO5xRYi+SfSWHHNvvG5bnl/NqNwsKVDstHxYD0p1aXKynF0vQmYZS0HdJnfWOr:RshfSWHHNvoLqNwDDGw02eQmh0HjWOr

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3940	rundll32.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	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\notepad¢¬.exe	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
File opened for modification	C:\Windows\SysWOW64\¢«.exe	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
File created	C:\Windows\SysWOW64\¢«.exe	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\rundll32.exe	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
File created	C:\Windows\system\rundll32.exe	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1718164679"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	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\exefile\shell\open\command	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1718164679"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3940	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
3940	rundll32.exe
3940	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4396 wrote to memory of 3940	4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe	85
PID 4396 wrote to memory of 3940	4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe	85
PID 4396 wrote to memory of 3940	4396	3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe	85

C:\Users\Admin\AppData\Local\Temp\3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe
"C:\Users\Admin\AppData\Local\Temp\3c89c154622e38172fd5573f3b303734dfa30b4ab3f9680dddcccb2ed9fc9470.exe"
1⤵
- 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:4396
- 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:3940

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
84KB

MD5
d85a513af31873b63ed54cce776de069

SHA1
b1430dec4390c65098ddc625e7daec225642c3f5

SHA256
8cd1bd7656398a489ce7e8113f19a040702c53a2b0a8524d8a537ac89d4f43f2

SHA512
16157c71dba52dd621ab0abb579b063a4446b01624fa5cc17550c27a9d138c94a1198fc36bca8f4b778e34dbe5921c6b4e265a1d66939953900c16a8b7e66724

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

Filesize
73KB

MD5
d2c0dd76e05e3ed2106089468b2d65a2

SHA1
642967312de7e370e19515651b6cb460bec6e87e

SHA256
13cd0eb0d1b9065937173ff5e79f8b5088e0690d65e60d3782a491366697d2e3

SHA512
8e9c96fe25347aa869797e0ceba8adf0d74ad34a76a24e4fb9eb23dfdfe521b130802e3b2c8ee303f365b2bce51e70ff7bd211645c0c20b79a7ceba5d0dfc69a

Download Submit
memory/4396-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/4396-13-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads