33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c

General

Target

33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Size

180KB
MD5

108969d1e7dd55cb81384c5e6139f990
SHA1

0596ab0eeb4f880aad7df8211adc8bfa8ccd5bc9
SHA256

33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c
SHA512

265d756b77a8fc4f7e7bfbe982ba9f107bdf95dd923b66df19b67b86c0cdc657cfc38768deac3ff75063f0ab4bf9f7ce0ae573738e558f85c137de1dda4c621d
SSDEEP

3072:AHU7nDrBZyoLiGQv8XQRJg2D4oCdnDxCZ5ZkYa2mA9FWLqt2a0GG40e+:Wur3y6iJv8XQ/g4cDxI5ba2mA9FWra0x

Score

10^/10

persistence upx

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 3 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\$Recycle.Bin\\KPZ.EXE \"%1\" %*"	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	GRNKKY.EXE

Executes dropped EXE 1 IoCs

pid	Process
2708	GRNKKY.EXE

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/5036-132-0x0000000000400000-0x0000000000478000-memory.dmp	upx
behavioral2/files/0x0004000000022de6-134.dat	upx
behavioral2/files/0x0004000000022de6-135.dat	upx
behavioral2/memory/5036-136-0x0000000000400000-0x0000000000478000-memory.dmp	upx
behavioral2/memory/2708-137-0x0000000000400000-0x0000000000478000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\KPZ.EXE = "C:\\$Recycle.Bin\\KPZ.EXE"	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe

Enumerates connected drives 3 TTPs 18 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\S:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\E:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\J:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\L:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\M:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\N:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\O:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\Q:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\U:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\F:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\G:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\P:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\R:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\H:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\I:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\K:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\T:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened (read-only)	\??\V:	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\GRNKKY.EXE	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File created	C:\Program Files (x86)\ZHRULB.EXE	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File created	C:\Program Files\CDVIL.EXE	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
File opened for modification	C:\Program Files\CDVIL.EXE	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	GRNKKY.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Program Files\\CDVIL.EXE %1"	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "C:\\$Recycle.Bin\\KPZ.EXE \"%1\""	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command\ = "C:\\$Recycle.Bin\\KPZ.EXE %1"	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\$Recycle.Bin\\KPZ.EXE \"%1\" %*"	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open\command	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command\ = "C:\\$Recycle.Bin\\KPZ.EXE \"%1\""	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2708	GRNKKY.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5036 wrote to memory of 2708	5036	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe	81
PID 5036 wrote to memory of 2708	5036	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe	81
PID 5036 wrote to memory of 2708	5036	33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe	81

C:\Users\Admin\AppData\Local\Temp\33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe
"C:\Users\Admin\AppData\Local\Temp\33696e2763c9616b40e824e88460f95d42ae8b24830a16cce84224afd8380f9c.exe"
1⤵
- Modifies system executable filetype association
- Adds Run key to start application
- Enumerates connected drives
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5036
- C:\Program Files (x86)\GRNKKY.EXE
  "C:\Program Files (x86)\GRNKKY.EXE"
  2⤵
  - Modifies system executable filetype association
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2708

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\GRNKKY.EXE

Filesize
181KB

MD5
01cc5fa932093c4eeea71cea7a358052

SHA1
fea3f81c3ab7511daf50558d977dac15268ec1da

SHA256
6ec28f7939079c3d0ae1f4775e1b51512417c7437e450bcf0c9906d0ac47d8f6

SHA512
063082c4e0ac3af2777015c54e647b1aa2032da1a5697ef1b17041f1a7d70459ccf8d1f7647a460f77db97b65e18ce16b764f9c694898532aa0eb1bddd090b63

Download Submit
C:\Program Files (x86)\GRNKKY.EXE

Filesize
181KB

MD5
01cc5fa932093c4eeea71cea7a358052

SHA1
fea3f81c3ab7511daf50558d977dac15268ec1da

SHA256
6ec28f7939079c3d0ae1f4775e1b51512417c7437e450bcf0c9906d0ac47d8f6

SHA512
063082c4e0ac3af2777015c54e647b1aa2032da1a5697ef1b17041f1a7d70459ccf8d1f7647a460f77db97b65e18ce16b764f9c694898532aa0eb1bddd090b63

Download Submit
memory/2708-137-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5036-132-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5036-136-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads