ec3381b444601f113f2085322f873357cc92471730d666078f8dbbc670096766

Analysis

max time kernel
194s
max time network
211s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
05-12-2022 19:15

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General

Target

ec3381b444601f113f2085322f873357cc92471730d666078f8dbbc670096766.exe
Size

240KB
MD5

d112e0128539e24af592518c2d0fd617
SHA1

584f71c5cb4fe7278b20a68ce340d1a523c940eb
SHA256

ec3381b444601f113f2085322f873357cc92471730d666078f8dbbc670096766
SHA512

18aff8baecd26c4c168dca03c738f96c184729b449a7e5ffa5064c7ea8ae5e516797b42551a0e1caf4e8dcbf3781bcef6965f0c44233bf86f2b5c53b9a0923f3
SSDEEP

3072:5U+sYXdBcfhuNX5sAWAzYbi/y88Of3lCH1xpUkT6FIUSTNs9routpE:5CYXdBcfhu5WAHX3lmhEfSTNioS

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4576	Nashy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5020-133-0x0000000001000000-0x000000000103E000-memory.dmp	upx
behavioral2/memory/5020-134-0x0000000001000000-0x000000000103E000-memory.dmp	upx
behavioral2/memory/5020-139-0x0000000001000000-0x000000000103E000-memory.dmp	upx
behavioral2/memory/5020-142-0x0000000001000000-0x000000000103E000-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\RunOnce	ec3381b444601f113f2085322f873357cc92471730d666078f8dbbc670096766.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	ec3381b444601f113f2085322f873357cc92471730d666078f8dbbc670096766.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4576	Nashy.exe
4576	Nashy.exe
4576	Nashy.exe
4576	Nashy.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 5020 wrote to memory of 4576	5020	ec3381b444601f113f2085322f873357cc92471730d666078f8dbbc670096766.exe	82
PID 5020 wrote to memory of 4576	5020	ec3381b444601f113f2085322f873357cc92471730d666078f8dbbc670096766.exe	82
PID 5020 wrote to memory of 4576	5020	ec3381b444601f113f2085322f873357cc92471730d666078f8dbbc670096766.exe	82
PID 4576 wrote to memory of 752	4576	Nashy.exe	62
PID 4576 wrote to memory of 752	4576	Nashy.exe	62
PID 4576 wrote to memory of 752	4576	Nashy.exe	62
PID 4576 wrote to memory of 752	4576	Nashy.exe	62

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:752
- C:\Users\Admin\AppData\Local\Temp\ec3381b444601f113f2085322f873357cc92471730d666078f8dbbc670096766.exe
  "C:\Users\Admin\AppData\Local\Temp\ec3381b444601f113f2085322f873357cc92471730d666078f8dbbc670096766.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:5020
- - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nashy.exe
    C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nashy.exe
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4576

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nashy.exe

Filesize
64KB

MD5
9b1445a5c8b474895e465af91fb0cddf

SHA1
fa0e4fcc9953491533a6a67b3b5933ad37a0f43a

SHA256
7d9b01a4bcde40c8c4427ac33ec1d1446a02fba3681643622c802638d9a3b03d

SHA512
2be66c3bdf4a0bfcff1b184069655b889478784e23af161e2d4ecd829766ede77265b4c14bade6bece9120f03b775d41c84fd93696bebd517492fb11113cacf2

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nashy.exe

Filesize
64KB

MD5
9b1445a5c8b474895e465af91fb0cddf

SHA1
fa0e4fcc9953491533a6a67b3b5933ad37a0f43a

SHA256
7d9b01a4bcde40c8c4427ac33ec1d1446a02fba3681643622c802638d9a3b03d

SHA512
2be66c3bdf4a0bfcff1b184069655b889478784e23af161e2d4ecd829766ede77265b4c14bade6bece9120f03b775d41c84fd93696bebd517492fb11113cacf2

Download Submit
memory/752-140-0x000000007FFF0000-0x000000007FFF7000-memory.dmp

Filesize
28KB

Download
memory/4576-135-0x0000000000000000-mapping.dmp

Download
memory/4576-138-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4576-141-0x0000000010000000-0x0000000010013000-memory.dmp

Filesize
76KB

Download
memory/5020-133-0x0000000001000000-0x000000000103E000-memory.dmp

Filesize
248KB

Download
memory/5020-134-0x0000000001000000-0x000000000103E000-memory.dmp

Filesize
248KB

Download
memory/5020-139-0x0000000001000000-0x000000000103E000-memory.dmp

Filesize
248KB

Download
memory/5020-142-0x0000000001000000-0x000000000103E000-memory.dmp

Filesize
248KB

Download