f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea

Analysis

max time kernel
37s
max time network
86s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29/10/2022, 20:24

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General

Target

f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe
Size

13KB
MD5

839d32c31039160a912fcfbb3def6850
SHA1

3f7a0f47f79056946e9931f3966d0f436fcfc6cf
SHA256

f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea
SHA512

40c3be7ab2c216343db60df40275780a39c1ef51cc109ac0949e422324ec7db9729003cd27766a4f695380e857952d2541e537259532760c4512ec33c6a3bec2
SSDEEP

384:8lw3tHjlsEgYwZqUrRE0e22AE6GmbMqiGAg:u6R9LwZle0n2ADbA

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	msiexec.exe

Adds policy 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\microsoft\windows\currentversion\Policies\Explorer\Run	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\2577512575 = "C:\\PROGRA~3\\msfvsfzf.exe"	msiexec.exe

Blocklisted process makes network request 4 IoCs

flow	pid	Process
3	868	msiexec.exe
4	868	msiexec.exe
5	868	msiexec.exe
6	868	msiexec.exe

Disables taskbar notifications via registry modification
evasion

Deletes itself 1 IoCs

pid	Process
868	msiexec.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~3\msfvsfzf.exe	msiexec.exe
File created	C:\PROGRA~3\msfvsfzf.exe	msiexec.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe
968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe
868	msiexec.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe
968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe
Token: SeBackupPrivilege	968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe
Token: SeRestorePrivilege	968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe
Token: SeDebugPrivilege	868	msiexec.exe
Token: SeBackupPrivilege	868	msiexec.exe
Token: SeRestorePrivilege	868	msiexec.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 968 wrote to memory of 868	968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe	28
PID 968 wrote to memory of 868	968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe	28
PID 968 wrote to memory of 868	968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe	28
PID 968 wrote to memory of 868	968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe	28
PID 968 wrote to memory of 868	968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe	28
PID 968 wrote to memory of 868	968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe	28
PID 968 wrote to memory of 868	968	f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe	28

C:\Users\Admin\AppData\Local\Temp\f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe
"C:\Users\Admin\AppData\Local\Temp\f05bfcd89931b07619ce3cce8bf79cabd1ccf69d1d6f61aa1ad97ddaa1d772ea.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:968
- C:\Windows\SysWOW64\msiexec.exe
  C:\Windows\SysWOW64\msiexec.exe
  2⤵
  - UAC bypass
  - Adds policy Run key to start application
  - Blocklisted process makes network request
  - Deletes itself
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:868

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/868-59-0x0000000000B40000-0x0000000000B54000-memory.dmp

Filesize
80KB

Download
memory/868-60-0x000000007EF90000-0x000000007EF95000-memory.dmp

Filesize
20KB

Download
memory/868-61-0x000000007EF90000-0x000000007EF95000-memory.dmp

Filesize
20KB

Download
memory/868-62-0x000000007EF90000-0x000000007EF95000-memory.dmp

Filesize
20KB

Download
memory/968-54-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/968-55-0x0000000076091000-0x0000000076093000-memory.dmp

Filesize
8KB

Download
memory/968-56-0x000000007EF90000-0x000000007EF95000-memory.dmp

Filesize
20KB

Download