53dbb6de59a7ac70488b762dc73fbdcca75479c54778790f53bfebff5d75f290

Analysis

max time kernel
88s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2024 22:45

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General

Target

7b7b52514414afed91b1dd01674bbb0d.exe
Size

120KB
MD5

7b7b52514414afed91b1dd01674bbb0d
SHA1

61cb9bd2fdeb50fbb4ac734431a9002192dd381e
SHA256

53dbb6de59a7ac70488b762dc73fbdcca75479c54778790f53bfebff5d75f290
SHA512

d123e2a3aa8609859cbca28220b6c15951a26bfd4fe455c739ac4948c7c7638b146db14ffa0ec312728bccdfbbde23ea64d5021261d5dd65f89432c19fa89f32
SSDEEP

768:jZKM11gG4ChfiPO0rfz0shcUypMC5/VKhZyg3in0IepF+:gMDgG4ChfiPOefgsOUqQwg

Score

6^/10

persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System applets = "C:\\Windows\\System\\applets.exe"	7b7b52514414afed91b1dd01674bbb0d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Syssrc32 = "C:\\Windows\\Syssrc32.exe"	7b7b52514414afed91b1dd01674bbb0d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\fndfst32 = "C:\\Windows\\System\\fndfst32.exe"	7b7b52514414afed91b1dd01674bbb0d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Explorer Shell = "C:\\Windows\\System\\Explorer.exe"	7b7b52514414afed91b1dd01674bbb0d.exe

Drops file in Windows directory 14 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System\Sysexp32.exe	7b7b52514414afed91b1dd01674bbb0d.exe
File opened for modification	C:\Windows\System\fndfst32.exe	7b7b52514414afed91b1dd01674bbb0d.exe
File opened for modification	C:\Windows\System\Explorer.exe	7b7b52514414afed91b1dd01674bbb0d.exe
File opened for modification	C:\Windows\Help\intret.cnt	7b7b52514414afed91b1dd01674bbb0d.exe
File created	C:\Windows\System\mplayerw.exe	7b7b52514414afed91b1dd01674bbb0d.exe
File opened for modification	C:\Windows\Syssrc32.exe	7b7b52514414afed91b1dd01674bbb0d.exe
File created	C:\Windows\Help\intret.cnt	7b7b52514414afed91b1dd01674bbb0d.exe
File opened for modification	C:\Windows\System\applets.exe	7b7b52514414afed91b1dd01674bbb0d.exe
File created	C:\Windows\System\applets.exe	7b7b52514414afed91b1dd01674bbb0d.exe
File created	C:\Windows\System\fndfst32.exe	7b7b52514414afed91b1dd01674bbb0d.exe
File created	C:\Windows\System\Sysexp32.exe	7b7b52514414afed91b1dd01674bbb0d.exe
File opened for modification	C:\Windows\System\mplayerw.exe	7b7b52514414afed91b1dd01674bbb0d.exe
File created	C:\Windows\Syssrc32.exe	7b7b52514414afed91b1dd01674bbb0d.exe
File created	C:\Windows\System\Explorer.exe	7b7b52514414afed91b1dd01674bbb0d.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3888	3800	WerFault.exe	86

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command	7b7b52514414afed91b1dd01674bbb0d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\Explore = "%SystemRoot%\\SysWow64\\NOTEPAD.EXE %1"	7b7b52514414afed91b1dd01674bbb0d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Windows\\System\\Sysexp32.exe %1"	7b7b52514414afed91b1dd01674bbb0d.exe

C:\Users\Admin\AppData\Local\Temp\7b7b52514414afed91b1dd01674bbb0d.exe
"C:\Users\Admin\AppData\Local\Temp\7b7b52514414afed91b1dd01674bbb0d.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
PID:3800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3800 -s 336
  2⤵
  - Program crash
  PID:3888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3800 -ip 3800
1⤵
PID:3356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\System\Sysexp32.exe

Filesize
132KB

MD5
a51aacecd32cd96e39b3136c61748153

SHA1
20067ea06eb2d3af4ece22933166470a9d1070fd

SHA256
b8473efd0b6c7c23a373a2a152e2f9507edb391f0b1ef71bdfd6d40fd6313c79

SHA512
b39016bbd001e0fe31c3af33819f594f0878612b7609b31fbd8d6d601dbe2d5ea84ada059f612b8764ca44bb161c07784ec5f78a22a7854d30e5fa41f0f76596

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads