fd84148426c6188c0bdec2e66d1f4fda9392342adb0c225d64aaacce24ce8653

Analysis

max time kernel
86s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 03:43

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General

Target

file (4).exe
Size

97KB
MD5

241421356dd99063199983faaaec1d8b
SHA1

2f65f6007347bdeb6bce09f7b727ed3db30c86a8
SHA256

ca1d9b37d93106cab5f20fde3e6943ac0ae4761589cf31e2554fbabfaf80bfd5
SHA512

59757412acc955bbf6a0695fac8b1b7ac231ae9bee71a42307cc4ec793c09f4d52a7358b0a8b40fa0658fbc688743034eedcf16da36f8bd2643cc48deb2c73ee
SSDEEP

1536:WUVdfhkoWcPdBW4TVu5nHhJKqMkwN7Y0S8iXU0CsNdyukfP+:WUVTVg5BWkfqUEsNYFfP+

Score

10^/10

defense_evasion discovery evasion trojan

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1548.002

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Processes:

kasper_zaebal.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" kasper_zaebal.exe
Executes dropped EXE 1 IoCs

Processes:

kasper_zaebal.exe

pid process

2784 kasper_zaebal.exe
Loads dropped DLL 1 IoCs

Processes:

file (4).exe

pid process

2680 file (4).exe

pid	process
2784	kasper_zaebal.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

kasper_zaebal.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	kasper_zaebal.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	kasper_zaebal.exe

Subvert Trust Controls: Mark-of-the-Web Bypass 1 TTPs 1 IoCs
When files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named Zone.Identifier with a specific value known as the MOTW.
defense_evasion

SIP and Trust Provider Hijacking
T1553.003

Processes:

cmd.exe

description ioc process

File created C:\ProgramData\Media\kasper_zaebal.exe:Zone.Identifier cmd.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2216 2680 WerFault.exe file (4).exe

description	ioc	process
File created	C:\ProgramData\Media\kasper_zaebal.exe:Zone.Identifier	cmd.exe

pid	pid_target	process	target process
2216	2680	WerFault.exe	file (4).exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

file (4).execmd.exekasper_zaebal.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file (4).exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kasper_zaebal.exe

NTFS ADS 1 IoCs

Processes:

cmd.exe

description ioc process

File created C:\ProgramData\Media\kasper_zaebal.exe:Zone.Identifier cmd.exe

description	ioc	process
File created	C:\ProgramData\Media\kasper_zaebal.exe:Zone.Identifier	cmd.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

file (4).exekasper_zaebal.exe

pid	process
2680	file (4).exe
2680	file (4).exe
2680	file (4).exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

kasper_zaebal.exe

pid process

2784 kasper_zaebal.exe
2784 kasper_zaebal.exe

pid	process
2784	kasper_zaebal.exe
2784	kasper_zaebal.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

file (4).exe

description	pid	process	target process
PID 2680 wrote to memory of 2480	2680	file (4).exe	cmd.exe
PID 2680 wrote to memory of 2480	2680	file (4).exe	cmd.exe
PID 2680 wrote to memory of 2480	2680	file (4).exe	cmd.exe
PID 2680 wrote to memory of 2480	2680	file (4).exe	cmd.exe
PID 2680 wrote to memory of 2784	2680	file (4).exe	kasper_zaebal.exe
PID 2680 wrote to memory of 2784	2680	file (4).exe	kasper_zaebal.exe
PID 2680 wrote to memory of 2784	2680	file (4).exe	kasper_zaebal.exe
PID 2680 wrote to memory of 2784	2680	file (4).exe	kasper_zaebal.exe
PID 2680 wrote to memory of 2216	2680	file (4).exe	WerFault.exe
PID 2680 wrote to memory of 2216	2680	file (4).exe	WerFault.exe
PID 2680 wrote to memory of 2216	2680	file (4).exe	WerFault.exe
PID 2680 wrote to memory of 2216	2680	file (4).exe	WerFault.exe

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

Processes:

kasper_zaebal.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	kasper_zaebal.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	kasper_zaebal.exe

C:\Users\Admin\AppData\Local\Temp\file (4).exe
"C:\Users\Admin\AppData\Local\Temp\file (4).exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\ProgramData\Media\rdb.bat
  2⤵
  - Subvert Trust Controls: Mark-of-the-Web Bypass
  - System Location Discovery: System Language Discovery
  - NTFS ADS
  PID:2480
- C:\ProgramData\Media\kasper_zaebal.exe
  -wait
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:2784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2680 -s 228
  2⤵
  - Program crash
  PID:2216

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Subvert Trust Controls

T1553

SIP and Trust Provider Hijacking

T1553.003

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Media\kasper_zaebal.exe:Zone.Identifier

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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C:\ProgramData\Media\rdb.bat

Filesize
84B

MD5
c6f7299be3ecbb88acfde79c4dc2b63c

SHA1
1ce9da1d060431581f08d3fa83240aab5b281d81

SHA256
a22d2d0a98cec8c7efccea543dc7d770577b5a966735deffa2f1bce9ecfbad5d

SHA512
b7ce561caff59f6a08702f21dfc953b028ac6b47289c61f85468586ff9f941490bade7f78b4eb198ae958dcb58204c85db3b6ec1d071d9b0af6babe9534baa27

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\ProgramData\Media\kasper_zaebal.exe

Filesize
97KB

MD5
241421356dd99063199983faaaec1d8b

SHA1
2f65f6007347bdeb6bce09f7b727ed3db30c86a8

SHA256
ca1d9b37d93106cab5f20fde3e6943ac0ae4761589cf31e2554fbabfaf80bfd5

SHA512
59757412acc955bbf6a0695fac8b1b7ac231ae9bee71a42307cc4ec793c09f4d52a7358b0a8b40fa0658fbc688743034eedcf16da36f8bd2643cc48deb2c73ee

Download Submit