b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff

General

Target

b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
Size

585KB
MD5

2536137c3cfe5f6ee54ee95962e9f3a8
SHA1

9b533b32e63f4524c9d69a61d3315d8a56831fb0
SHA256

b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff
SHA512

0e17085e32a81ee34e3d146f225f5c560ed2650d4498abe9f19e63d6c4e84798e0ab180487bd664cfeabde859f2392270835486cfdce2f8b242b1e3e1616d36b
SSDEEP

12288:f+iTr9rgkF48uSz94xgbxSP51Zm+FBbq3XfzCEx:f+egkC8dSx6SPzFBu3POg

Score

8^/10

upx

Malware Config

Signatures

UPX packed file 26 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1968-55-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-58-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-57-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-62-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-64-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-66-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-70-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-74-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-76-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-82-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-86-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-88-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-92-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-96-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-98-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-100-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-94-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-90-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-84-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-80-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-78-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-72-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-68-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-60-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-59-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/1968-102-0x0000000010000000-0x000000001003D000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\PastUclnH.sys	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer start page 1 TTPs 1 IoCs

stealer

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\Start Page = "http://www.wz123.com/?nuli"	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shell\OpenHomePage\Command	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
460	Process not Found
460	Process not Found

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
1968	b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe

C:\Users\Admin\AppData\Local\Temp\b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe
"C:\Users\Admin\AppData\Local\Temp\b4332a187a8e6c60831e0905a790b1b1d5c7812a355e2a645a9544523e3ac4ff.exe"
1⤵
- Drops file in System32 directory
- Modifies Internet Explorer start page
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1968

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1968-54-0x00000000756B1000-0x00000000756B3000-memory.dmp

Filesize
8KB

Download
memory/1968-55-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-58-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-57-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-62-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-64-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-66-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-70-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-74-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-76-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-82-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-86-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-88-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-92-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-96-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-98-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-100-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-94-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-90-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-84-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-80-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-78-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-72-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-68-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-60-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-59-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download
memory/1968-101-0x00000000002F2000-0x0000000000313000-memory.dmp

Filesize
132KB

Download
memory/1968-102-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download

Analysis

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