7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e

General

Target

7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
Size

79KB
MD5

e06f2e989fad7db423ef3d9ba314276d
SHA1

e1c9173ffbb74a2fe54a67e1dc5c5611a7bfda07
SHA256

7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e
SHA512

75e5094d026eb1893d2b318b8334b6162aaf9d19bb5b802d6f5e101c2b1be5b63affcb5166e01aba50b5262a552c7d7197d3fddb7b5a782890f5dbd90cb3d8af
SSDEEP

1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOy69G:GhfxHNIreQm+Hiz69G

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2668	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.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
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
File created	C:\Windows\SysWOW64\¢«.exe	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system\rundll32.exe	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
File opened for modification	C:\Windows\system\rundll32.exe	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1"	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1697023756"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1697023756"	rundll32.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"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2668	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
2668	rundll32.exe
2668	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 2668	2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe	28
PID 2216 wrote to memory of 2668	2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe	28
PID 2216 wrote to memory of 2668	2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe	28
PID 2216 wrote to memory of 2668	2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe	28
PID 2216 wrote to memory of 2668	2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe	28
PID 2216 wrote to memory of 2668	2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe	28
PID 2216 wrote to memory of 2668	2216	7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe	28

C:\Users\Admin\AppData\Local\Temp\7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.exe
"C:\Users\Admin\AppData\Local\Temp\7c3a3379be3690bc4712d6b0960653df729684976f03cf0ec3328856fbad366e.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:2216
- 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:2668

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
81KB

MD5
744872b13f0add46f36de915bb587125

SHA1
0fbd400cbe8e4638ff923934e7df210a39a03b90

SHA256
4bb8ec9fac2ddc38c3ae514730ed28223cbc026eaee72da90b538f4fcbc44dce

SHA512
e51197d04ddeca5e39eabfcb8ab898b1dc84440216f2424abe4b1c1c6040204fff9123e9fafdcb6a77ed664a30bbca3794d8526203e548d713f862de1da6a0b3

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

Filesize
73KB

MD5
dbf0fa80c9c0e6b7587dcc7a5a1b1916

SHA1
16b89e62ca0dd49f35e9e603e75ded1690cf6d13

SHA256
98bbc15951a44607a5f1f513189256e42684cf03d984cfe9a42b4ba2993085c6

SHA512
b39d73eeb797a27833da3ef3caac49f3e6b7044d294501023eadecfdd3e187e2368b5cc4063947350b0fc12b2025dd70edb363ee15fb5c3a2875d29a1ecaabc0

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

Filesize
73KB

MD5
dbf0fa80c9c0e6b7587dcc7a5a1b1916

SHA1
16b89e62ca0dd49f35e9e603e75ded1690cf6d13

SHA256
98bbc15951a44607a5f1f513189256e42684cf03d984cfe9a42b4ba2993085c6

SHA512
b39d73eeb797a27833da3ef3caac49f3e6b7044d294501023eadecfdd3e187e2368b5cc4063947350b0fc12b2025dd70edb363ee15fb5c3a2875d29a1ecaabc0

Download Submit
\Windows\system\rundll32.exe

Filesize
73KB

MD5
dbf0fa80c9c0e6b7587dcc7a5a1b1916

SHA1
16b89e62ca0dd49f35e9e603e75ded1690cf6d13

SHA256
98bbc15951a44607a5f1f513189256e42684cf03d984cfe9a42b4ba2993085c6

SHA512
b39d73eeb797a27833da3ef3caac49f3e6b7044d294501023eadecfdd3e187e2368b5cc4063947350b0fc12b2025dd70edb363ee15fb5c3a2875d29a1ecaabc0

Download Submit
\Windows\system\rundll32.exe

Filesize
73KB

MD5
dbf0fa80c9c0e6b7587dcc7a5a1b1916

SHA1
16b89e62ca0dd49f35e9e603e75ded1690cf6d13

SHA256
98bbc15951a44607a5f1f513189256e42684cf03d984cfe9a42b4ba2993085c6

SHA512
b39d73eeb797a27833da3ef3caac49f3e6b7044d294501023eadecfdd3e187e2368b5cc4063947350b0fc12b2025dd70edb363ee15fb5c3a2875d29a1ecaabc0

Download Submit
memory/2216-0-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2216-12-0x0000000000350000-0x0000000000366000-memory.dmp

Filesize
88KB

Download
memory/2216-17-0x0000000000350000-0x0000000000366000-memory.dmp

Filesize
88KB

Download
memory/2216-22-0x0000000000350000-0x0000000000352000-memory.dmp

Filesize
8KB

Download
memory/2216-21-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2668-20-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download
memory/2668-23-0x0000000000400000-0x0000000000415A00-memory.dmp

Filesize
86KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads