4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff

General

Target

4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Size

27KB
MD5

72b88fb1722a88028393f1281a90a021
SHA1

776fe0024d240e62b35cf9ec680db1cd422c82a4
SHA256

4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff
SHA512

8e5ee9a340729b1873b7dceff350808c0f0bd91c6b7560a80b4d5a1eb91368b5673e201bdca75de4735f153a55d8aed7d3ef0d7c5f09f61177e6d260782f92cb
SSDEEP

768:PVEHJqjHyGvwFylDpulVSQJrE/2QmlCYZUTOgM:PH2nylslwHCCLK

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
960	rundll32.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\" %*"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.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	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\¢«.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
File created	C:\Windows\SysWOW64\¢«.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
File opened for modification	C:\Windows\SysWOW64\notepad¢¬.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
File created	C:\Windows\SysWOW64\notepad¢¬.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system\rundll32.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
File opened for modification	C:\Windows\system\rundll32.exe	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe

Modifies registry class 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	rundll32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Key created	\REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1716498716"	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Key created	\REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1716498716"	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.exe %1"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*"	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
Key created	\REGISTRY\MACHINE\Software\Classes\MSipv	rundll32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
960	rundll32.exe
960	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 960	4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe	91
PID 4076 wrote to memory of 960	4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe	91
PID 4076 wrote to memory of 960	4076	4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe	91

C:\Users\Admin\AppData\Local\Temp\4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.exe
"C:\Users\Admin\AppData\Local\Temp\4b4aa59b9ec5d54886386134231124c7924c00ac6c635bbcfac46e2e58be7cff.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:4076
- C:\Windows\system\rundll32.exe
  C:\Windows\system\rundll32.exe
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  PID:960

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4292 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:1940

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
29KB

MD5
9b66c140acd50bc10a11b250ddbc7922

SHA1
b8df0472a81fe3570d5cd1366ebae9158815c435

SHA256
59fdd17ca5678a3660d373aa7f95adce77a278c631cb8e555fe417480cf25391

SHA512
416bfe24e83a8c230fa6bedbd2fa46189f97378a3a32597e03e8da2f140ac180496b4b5d471a3c3270412bb50eb02b7c015a9304d937369ccd7379c0c0f91922

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

Filesize
27KB

MD5
2413ee08ae8370e666690ecec48ee8dc

SHA1
95682fc85d8a2df8d005132446e35aa771e24d75

SHA256
4f019fe276761b4cf8fe950be19b5335eb24a9e36349fcf00146fd63a9a9c1ba

SHA512
40577bf2618a5c2e65610f5aaa876d559fea1052caff6ba8bba6febadfa84218b1fd7aa57c45c367e2905021ce0ae2776841d9de7299115912a96ce790a0723d

Download Submit
memory/960-25-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/960-26-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/960-29-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/960-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/960-28-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/960-20-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/960-21-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/960-22-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/960-23-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/960-24-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/960-27-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4076-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4076-0-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4076-1-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4076-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads