b1157c55de1fb9cf0ca9210ba2e3156946a93b2d2c81a120135ea431e05c78f7

Analysis

max time kernel
140s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13/03/2024, 12:28

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General

Target

c5dfb5c776cf523060f641593d2895f7.exe
Size

41KB
MD5

c5dfb5c776cf523060f641593d2895f7
SHA1

b85991d8fa73f544476af1bc8cb00d1d7a27aca3
SHA256

b1157c55de1fb9cf0ca9210ba2e3156946a93b2d2c81a120135ea431e05c78f7
SHA512

f7301423e09e252815b2d12076b5908bb5d4813a4031bc32a0a6b1890ed933de26b40cb7e744dab49ae98cdec65e8f95b1c12da1bf72a2aa6b2d002141032799
SSDEEP

768:ykxEvS1j5V81A5Mh+vIT8JgBKDAiJUgoyZgyMgBZHNAWjzwS:D75L81d+vEkBfwqLHCWjR

Score

7^/10

persistence upx

Malware Config

Signatures

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2880-0-0x0000000000400000-0x000000000041D000-memory.dmp	upx
behavioral1/memory/2880-4-0x0000000000400000-0x000000000041D000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 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\ATWATCH = "C:\\Windows\\uMyxKxC3Q.exe"	c5dfb5c776cf523060f641593d2895f7.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SFCDisable = "4294967197"	c5dfb5c776cf523060f641593d2895f7.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\uMyxKxC3Q.exe	c5dfb5c776cf523060f641593d2895f7.exe
File opened for modification	C:\Windows\uMyxKxC3Q.exe	c5dfb5c776cf523060f641593d2895f7.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3148	2880	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2880	c5dfb5c776cf523060f641593d2895f7.exe
2880	c5dfb5c776cf523060f641593d2895f7.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 3148	2880	c5dfb5c776cf523060f641593d2895f7.exe	28
PID 2880 wrote to memory of 3148	2880	c5dfb5c776cf523060f641593d2895f7.exe	28
PID 2880 wrote to memory of 3148	2880	c5dfb5c776cf523060f641593d2895f7.exe	28
PID 2880 wrote to memory of 3148	2880	c5dfb5c776cf523060f641593d2895f7.exe	28

C:\Users\Admin\AppData\Local\Temp\c5dfb5c776cf523060f641593d2895f7.exe
"C:\Users\Admin\AppData\Local\Temp\c5dfb5c776cf523060f641593d2895f7.exe"
1⤵
- Adds Run key to start application
- Modifies WinLogon
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 8696
  2⤵
  - Program crash
  PID:3148

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

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2880-0-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/2880-4-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download